<html xmlns="http://www.w3.org/1999/xhtml"><head><meta charset="utf-8"><meta name="generator" content="pdf2htmlEX"><meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"><link rel="stylesheet" href="https://csdnimg.cn/release/download_crawler_static/css/base.min.css"><link rel="stylesheet" href="https://csdnimg.cn/release/download_crawler_static/css/fancy.min.css"><link rel="stylesheet" href="https://csdnimg.cn/release/download_crawler_static/85446233/raw.css"><script src="https://csdnimg.cn/release/download_crawler_static/js/compatibility.min.js"></script><script src="https://csdnimg.cn/release/download_crawler_static/js/pdf2htmlEX.min.js"></script><script>try{pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({});}catch(e){}</script><title></title></head><body><div id="sidebar" style="display: none"><div id="outline"></div></div><div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://csdnimg.cn/release/download_crawler_static/85446233/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">Man<span class="_ _0"></span>k<span class="_ _1"></span>o Z. </div><div class="c x2 y2 w2 h3"><div class="t m0 x0 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">1</div></div><div class="t m0 x1 h4 y4 ff2 fs0 fc0 sc0 ls0 ws0">SCAFF<span class="_ _0"></span>O<span class="_ _1"></span>LDS FAILURE<span class="_ _0"></span>S CAU<span class="_ _1"></span>SED BY VEHICLE<span class="_ _0"></span> <span class="_ _1"></span>S<span class="_ _1"></span>T<span class="_ _0"></span>RI<span class="_ _1"></span>KES DURING <span class="_ _2"></span><span class="ff1">1 </span></div><div class="t m0 x1 h4 y5 ff2 fs0 fc0 sc0 ls0 ws0">CONSTRUCTION OF NEW VI<span class="_ _0"></span>ADUCT O<span class="_ _1"></span>VER A<span class="_ _1"></span>-18<span class="_ _0"></span> MOTORWAY <span class="_ _1"></span>IN PO<span class="_ _0"></span>LAND<span class="ff1"> <span class="_ _3"></span>2 </span></div><div class="t m0 x1 h2 y6 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _4"></span>3 </div><div class="t m0 x1 h2 y7 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _4"></span>4 </div><div class="t m0 x1 h2 y8 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _4"></span>5 </div><div class="t m0 x1 h2 y9 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _4"></span>6 </div><div class="t m0 x3 h2 ya ff1 fs0 fc0 sc0 ls0 ws0">Z<span class="_ _0"></span>big<span class="_ _1"></span>niew “Zee” Man<span class="_ _0"></span>k<span class="_ _1"></span>o<span class="_ _0"></span> <span class="_ _5"></span>7 </div><div class="t m0 x4 h2 yb ff1 fs0 fc0 sc0 ls0 ws0">Professor of<span class="_ _1"></span> Civil and<span class="_ _0"></span> Str<span class="_ _1"></span>uc<span class="_ _0"></span>tura<span class="_ _1"></span>l En<span class="_ _0"></span>gi<span class="_ _1"></span>neering<span class="_ _0"></span>,<span class="_ _1"></span> Bri<span class="_ _1"></span>dge Division, <span class="_ _0"></span>I<span class="_ _6"></span>n<span class="_ _0"></span>stitute <span class="_ _1"></span>of Civil Eng<span class="_ _0"></span>i<span class="_ _6"></span>n<span class="_ _0"></span>eering <span class="_ _7"></span>8 </div><div class="t m0 x5 h2 yc ff1 fs0 fc0 sc0 ls0 ws0">Wr<span class="_ _1"></span>oc<span class="_ _0"></span>law University of<span class="_ _1"></span> <span class="_ _1"></span>T<span class="_ _0"></span>echnolog<span class="_ _0"></span>y<span class="_ _1"></span>, <span class="_ _1"></span>Wybrz<span class="_ _0"></span>eze W<span class="_ _1"></span>yspiansk<span class="_ _0"></span>i<span class="_ _1"></span>ego No. 27, 50-370 Wroc<span class="_ _0"></span>l<span class="_ _1"></span>aw, Poland <span class="_ _8"></span>9 </div><div class="t m0 x6 h2 yd ff1 fs0 fc0 sc0 ls0 ws0">Te<span class="_ _0"></span>l./f<span class="_ _6"></span>ax <span class="_ _0"></span>(<span class="_ _1"></span>+<span class="_ _0"></span>48) <span class="_ _1"></span>71 352<span class="_ _0"></span>-<span class="_ _6"></span>9<span class="_ _0"></span>2-74 zb<span class="_ _0"></span>ig<span class="_ _1"></span>niew.ma<span class="_ _1"></span>nko<span class="_ _0"></span>@wp.pl <span class="_ _9"></span>1<span class="_ _0"></span>0 </div><div class="t m0 x7 h2 ye ff1 fs0 fc0 sc0 ls0 ws0">(Correspond<span class="_ _0"></span>i<span class="_ _1"></span>n<span class="_ _0"></span>g a<span class="_ _6"></span>u<span class="_ _0"></span>t<span class="_ _1"></span>ho<span class="_ _0"></span>r<span class="_ _1"></span>) <span class="_ _a"></span>1<span class="_ _0"></span>1 </div><div class="t m0 x1 h2 yf ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>1<span class="_ _0"></span>2 </div><div class="t m0 x1 h2 y10 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>1<span class="_ _0"></span>3 </div><div class="t m0 x1 h2 y11 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>1<span class="_ _0"></span>4 </div><div class="t m0 x1 h2 y12 ff1 fs0 fc0 sc0 ls0 ws0">Word<span class="_ _0"></span> c<span class="_ _1"></span>ount:<span class="_ _1"></span> text (3<span class="_ _0"></span>122) + 7 f<span class="_ _6"></span>i<span class="_ _0"></span>gure<span class="_ _0"></span>s (<span class="_ _6"></span>7<span class="_ _0"></span> × 2<span class="_ _1"></span>50<span class="_ _0"></span> = 1750) + 0 ta<span class="_ _1"></span>b<span class="_ _0"></span>l<span class="_ _1"></span>e<span class="_ _0"></span>s (<span class="_ _6"></span>0<span class="_ _0"></span> × 250 = 0) <span class="_ _1"></span>=<span class="_ _0"></span> <span class="_ _1"></span>4872<span class="_ _0"></span> <span class="_ _c"></span>1<span class="_ _0"></span>5 </div><div class="t m0 x1 h2 y13 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>1<span class="_ _0"></span>6 </div><div class="t m0 x1 h2 y14 ff1 fs0 fc0 sc0 ls0 ws0">Sub<span class="_ _0"></span>mis<span class="_ _6"></span>s<span class="_ _0"></span>i<span class="_ _1"></span>on<span class="_ _0"></span> <span class="_ _1"></span>d<span class="_ _0"></span>at<span class="_ _1"></span>e: June 5, 2009<span class="_ _0"></span>.<span class="_ _1"></span> <span class="_ _d"></span>1<span class="_ _0"></span>7 </div><div class="t m0 x1 h2 y15 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>1<span class="_ _0"></span>8 </div><div class="t m0 x1 h2 y16 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>1<span class="_ _0"></span>9 </div><div class="t m0 x1 h2 y17 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>0 </div><div class="t m0 x1 h2 y18 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>1 </div><div class="t m0 x1 h2 y19 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>2 </div><div class="t m0 x1 h2 y1a ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>3 </div><div class="t m0 x1 h2 y1b ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>4 </div><div class="t m0 x1 h2 y1c ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>5 </div><div class="t m0 x1 h2 y1d ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>6 </div><div class="t m0 x1 h2 y1e ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>7 </div><div class="t m0 x1 h2 y1f ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>8 </div><div class="t m0 x1 h2 y20 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>9 </div><div class="t m0 x1 h2 y21 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>0 </div><div class="t m0 x1 h2 y22 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>1 </div><div class="t m0 x1 h2 y23 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>2 </div><div class="t m0 x1 h2 y24 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>3 </div><div class="t m0 x1 h2 y25 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>4 </div><div class="t m0 x1 h2 y26 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>5 </div><div class="t m0 x1 h2 y27 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>6 </div><div class="t m0 x1 h2 y28 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>7 </div><div class="t m0 x1 h2 y29 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>8 </div><div class="t m0 x1 h2 y2a ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>9 </div><div class="t m0 x1 h2 y2b ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>4<span class="_ _0"></span>0 </div><div class="t m0 x1 h2 y2c ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>4<span class="_ _0"></span>1 </div><div class="t m0 x1 h2 y2d ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>4<span class="_ _0"></span>2 </div><div class="t m0 x1 h2 y2e ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>4<span class="_ _0"></span>3 </div><div class="t m0 x1 h2 y2f ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>4<span class="_ _0"></span>4 </div><div class="t m0 x1 h2 y30 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>4<span class="_ _0"></span>5 </div><div class="t m0 x1 h2 y31 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>4<span class="_ _0"></span>6 </div><div class="t m0 x8 h5 y32 ff3 fs1 fc0 sc0 ls0 ws0">TRB 2010 Annual Meeting CD-ROM<span class="_ _e"> </span><span class="ff4">Original paper submittal - not revised by author.<span class="_ _f"></span><span class="ff5">TRB 2010 Annual Meeting CD-ROM<span class="_ _e"> </span><span class="ff6">Original paper submittal - not revised by author.</span></span></span></div></div><div class="pi" data-data='{"ctm":[1.613445,0.000000,0.000000,1.613445,0.000000,0.000000]}'></div></div></body></html>
<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://csdnimg.cn/release/download_crawler_static/85446233/bg2.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">Man<span class="_ _0"></span>k<span class="_ _1"></span>o Z. </div><div class="c x2 y2 w2 h3"><div class="t m0 x0 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">2</div></div><div class="t m0 x1 h4 y33 ff2 fs0 fc0 sc0 ls0 ws0">Abstract: <span class="_ _1"></span><span class="ff1">T<span class="_ _0"></span>he paper is presented cases of<span class="_ _1"></span> failures<span class="_ _0"></span> <span class="_ _6"></span>o<span class="_ _0"></span>f<span class="_ _1"></span> stee<span class="_ _0"></span>l s<span class="_ _1"></span>c<span class="_ _0"></span>af<span class="_ _1"></span>f<span class="_ _6"></span>o<span class="_ _0"></span>ld<span class="_ _0"></span>s damaged by<span class="_ _1"></span> veh<span class="_ _0"></span>icl<span class="_ _1"></span>e strikes <span class="_ _7"></span>1 </span></div><div class="t m0 x1 h2 y34 ff1 fs0 fc0 sc0 ls0 ws0">du<span class="_ _0"></span>r<span class="_ _1"></span>ing<span class="_ _0"></span> <span class="_ _1"></span>the construction <span class="_ _1"></span>o<span class="_ _0"></span>f<span class="_ _6"></span> ne<span class="_ _0"></span>w viaducts<span class="_ _0"></span> <span class="_ _1"></span>ov<span class="_ _1"></span>e<span class="_ _0"></span>r<span class="_ _1"></span> the<span class="_ _0"></span> <span class="_ _1"></span>upgraded A-<span class="_ _6"></span>1<span class="_ _0"></span>8<span class="_ _0"></span> m<span class="_ _1"></span>o<span class="_ _0"></span>t<span class="_ _1"></span>o<span class="_ _0"></span>r<span class="_ _1"></span>way<span class="_ _1"></span> in Po<span class="_ _0"></span>la<span class="_ _1"></span>nd<span class="_ _0"></span>.<span class="_ _1"></span> Aft<span class="_ _1"></span>e<span class="_ _0"></span>r<span class="_ _1"></span> <span class="_ _10"></span>2 </div><div class="t m0 x1 h2 y6 ff1 fs0 fc0 sc0 ls0 ws0">se<span class="_ _0"></span>v<span class="_ _1"></span>eral vehicle strikes into th<span class="_ _1"></span>e<span class="_ _0"></span> s<span class="_ _1"></span>caff<span class="_ _1"></span>old<span class="_ _0"></span> structures<span class="_ _0"></span> <span class="_ _1"></span>th<span class="_ _1"></span>e<span class="_ _0"></span>ir damage<span class="_ _1"></span>d<span class="_ _0"></span> <span class="_ _6"></span>co<span class="_ _0"></span>mponents were no longer <span class="_ _11"></span>3 </div><div class="t m0 x1 h2 y7 ff1 fs0 fc0 sc0 ls0 ws0">se<span class="_ _0"></span>r<span class="_ _1"></span>vi<span class="_ _1"></span>c<span class="_ _0"></span>eable (<span class="_ _1"></span>conside<span class="_ _0"></span>ri<span class="_ _6"></span>n<span class="_ _0"></span>g the saf<span class="_ _1"></span>e<span class="_ _0"></span>ty<span class="_ _1"></span> o<span class="_ _0"></span>f<span class="_ _6"></span> th<span class="_ _0"></span>e construction works being carried out). This put the <span class="_ _12"></span>4 </div><div class="t m0 x1 h2 y8 ff1 fs0 fc0 sc0 ls0 ws0">cont<span class="_ _0"></span>r<span class="_ _1"></span>actor to additio<span class="_ _1"></span>n<span class="_ _0"></span>al <span class="_ _1"></span>e<span class="_ _0"></span>x<span class="_ _1"></span>penses connected<span class="_ _0"></span> <span class="_ _1"></span>with t<span class="_ _1"></span>he repl<span class="_ _0"></span>a<span class="_ _1"></span>cemen<span class="_ _0"></span>t <span class="_ _6"></span>o<span class="_ _0"></span>f <span class="_ _1"></span>the<span class="_ _0"></span> <span class="_ _6"></span>d<span class="_ _0"></span>amaged<span class="_ _0"></span> <span class="_ _1"></span>scaff<span class="_ _1"></span>old<span class="_ _0"></span>. <span class="_ _1"></span>The <span class="_ _13"></span>5 </div><div class="t m0 x1 h2 y9 ff1 fs0 fc0 sc0 ls0 ws0">causes and consequences o<span class="_ _0"></span>f<span class="_ _6"></span> th<span class="_ _0"></span>e f<span class="_ _1"></span>ailures<span class="_ _0"></span> are give<span class="_ _1"></span>n<span class="_ _0"></span> <span class="_ _6"></span>and<span class="_ _0"></span> the <span class="_ _1"></span>necess<span class="_ _0"></span>ary<span class="_ _1"></span> solutions<span class="_ _0"></span> <span class="_ _1"></span>ado<span class="_ _1"></span>p<span class="_ _0"></span>t<span class="_ _1"></span>ed in<span class="_ _0"></span> <span class="_ _1"></span>the <span class="_ _14"></span>6 </div><div class="t m0 x1 h2 ya ff1 fs0 fc0 sc0 ls0 ws0">cons<span class="_ _0"></span>i<span class="_ _1"></span>dered cases – whe<span class="_ _0"></span>r<span class="_ _1"></span>eby t<span class="_ _1"></span>he t<span class="_ _0"></span>r<span class="_ _1"></span>affic situa<span class="_ _0"></span>t<span class="_ _6"></span>ion<span class="_ _0"></span> <span class="_ _1"></span>s<span class="_ _0"></span>i<span class="_ _1"></span>gnif<span class="_ _1"></span>ica<span class="_ _0"></span>ntly <span class="_ _1"></span>imp<span class="_ _0"></span>r<span class="_ _6"></span>o<span class="_ _0"></span>ved – are desc<span class="_ _0"></span>r<span class="_ _1"></span>ibed. <span class="_ _15"></span>7 </div><div class="t m0 x1 h2 yb ff1 fs0 fc0 sc0 ls0 ws0">Moreover,<span class="_ _1"></span> it is pro<span class="_ _0"></span>posed to increase the minimum v<span class="_ _1"></span>e<span class="_ _0"></span>r<span class="_ _1"></span>tic<span class="_ _0"></span>a<span class="_ _1"></span>l clearance re<span class="_ _1"></span>qu<span class="_ _0"></span>ir<span class="_ _1"></span>ed<span class="_ _0"></span> d<span class="_ _1"></span>uring t<span class="_ _1"></span>h<span class="_ _0"></span>e b<span class="_ _1"></span>ui<span class="_ _0"></span>lding <span class="_ _16"></span>8 </div><div class="t m0 x1 h2 yc ff1 fs0 fc0 sc0 ls0 ws0">or rep<span class="_ _0"></span>a<span class="_ _1"></span>irs of <span class="_ _1"></span>b<span class="_ _0"></span>r<span class="_ _1"></span>idge<span class="_ _0"></span> <span class="_ _6"></span>s<span class="_ _0"></span>tructures. <span class="_ _17"></span>9 </div><div class="t m0 x1 h2 yd ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>1<span class="_ _0"></span>0 </div><div class="t m0 x1 h2 ye ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>1<span class="_ _0"></span>1 </div><div class="t m0 x1 h4 yf ff2 fs0 fc0 sc0 ls0 ws0">Key<span class="_ _0"></span>w<span class="_ _1"></span>ords:<span class="ff1"> Scaff<span class="_ _1"></span>old<span class="_ _0"></span> Failur<span class="_ _1"></span>e<span class="_ _0"></span>, <span class="_ _6"></span>Ve<span class="_ _0"></span>hicle St<span class="_ _0"></span>r<span class="_ _6"></span>i<span class="_ _0"></span>ke, Da<span class="_ _1"></span>maged<span class="_ _0"></span> <span class="_ _1"></span>component, New Object, Viaduct<span class="_ _0"></span> <span class="_ _18"></span>1<span class="_ _0"></span>2 </span></div><div class="t m0 x9 h2 y10 ff1 fs0 fc0 sc0 ls0 ws0">Cons<span class="_ _0"></span>tr<span class="_ _1"></span>uction, Mo<span class="_ _0"></span>t<span class="_ _1"></span>orway<span class="_ _1"></span> A-18<span class="_ _0"></span>. <span class="_ _19"></span>1<span class="_ _0"></span>3 </div><div class="t m0 x1 h2 y11 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>1<span class="_ _0"></span>4 </div><div class="t m0 x1 h2 y12 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>1<span class="_ _0"></span>5 </div><div class="t m0 x1 h2 y13 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>1<span class="_ _0"></span>6 </div><div class="t m0 x1 h2 y14 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>1<span class="_ _0"></span>7 </div><div class="t m0 x1 h2 y15 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>1<span class="_ _0"></span>8 </div><div class="t m0 x1 h2 y16 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>1<span class="_ _0"></span>9 </div><div class="t m0 x1 h2 y17 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>0 </div><div class="t m0 x1 h2 y18 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>1 </div><div class="t m0 x1 h2 y19 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>2 </div><div class="t m0 x1 h2 y1a ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>3 </div><div class="t m0 x1 h2 y1b ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>4 </div><div class="t m0 x1 h2 y1c ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>5 </div><div class="t m0 x1 h2 y1d ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>6 </div><div class="t m0 x1 h2 y1e ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>7 </div><div class="t m0 x1 h2 y1f ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>8 </div><div class="t m0 x1 h2 y20 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>9 </div><div class="t m0 x1 h2 y21 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>0 </div><div class="t m0 x1 h2 y22 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>1 </div><div class="t m0 x1 h2 y23 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>2 </div><div class="t m0 x1 h2 y24 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>3 </div><div class="t m0 x1 h2 y25 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>4 </div><div class="t m0 x1 h2 y26 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>5 </div><div class="t m0 x1 h2 y27 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>6 </div><div class="t m0 x1 h2 y28 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>7 </div><div class="t m0 x1 h2 y29 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>8 </div><div class="t m0 x1 h2 y2a ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>3<span class="_ _0"></span>9 </div><div class="t m0 x1 h2 y2b ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>4<span class="_ _0"></span>0 </div><div class="t m0 x1 h2 y2c ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>4<span class="_ _0"></span>1 </div><div class="t m0 x1 h2 y2d ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>4<span class="_ _0"></span>2 </div><div class="t m0 x1 h2 y2e ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>4<span class="_ _0"></span>3 </div><div class="t m0 x1 h2 y2f ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>4<span class="_ _0"></span>4 </div><div class="t m0 x1 h2 y30 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>4<span class="_ _0"></span>5 </div><div class="t m0 x1 h2 y31 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>4<span class="_ _0"></span>6 </div><div class="t m0 x8 h5 y32 ff7 fs1 fc0 sc0 ls0 ws0">TRB 2010 Annual Meeting CD-ROM<span class="_ _e"> </span><span class="ff8">Original paper submittal - not revised by author.<span class="_ _f"></span><span class="ff9">TRB 2010 Annual Meeting CD-ROM<span class="_ _e"> </span><span class="ffa">Original paper submittal - not revised by author.</span></span></span></div></div><div class="pi" data-data='{"ctm":[1.613445,0.000000,0.000000,1.613445,0.000000,0.000000]}'></div></div>
<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://csdnimg.cn/release/download_crawler_static/85446233/bg3.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">Man<span class="_ _0"></span>k<span class="_ _1"></span>o Z. </div><div class="c x2 y2 w2 h3"><div class="t m0 x0 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">3</div></div><div class="t m0 x1 h4 y4 ff2 fs0 fc0 sc0 ls0 ws0">INT<span class="_ _0"></span>RODUCT<span class="_ _1"></span>ION <span class="_ _1a"></span><span class="ff1">1 </span></div><div class="t m0 x1 h2 y34 ff1 fs0 fc0 sc0 ls0 ws0">Fo<span class="_ _0"></span>r<span class="_ _1"></span>me<span class="_ _0"></span>r<span class="_ _1"></span>ly <span class="_ _1"></span>in<span class="_ _0"></span> <span class="_ _1"></span>Po<span class="_ _0"></span>la<span class="_ _1"></span>nd, a li<span class="_ _1"></span>tt<span class="_ _0"></span>l<span class="_ _1"></span>e<span class="_ _0"></span> <span class="_ _1"></span>atten<span class="_ _0"></span>ti<span class="_ _1"></span>on<span class="_ _0"></span> <span class="_ _1"></span>was <span class="_ _1"></span>pa<span class="_ _0"></span>i<span class="_ _6"></span>d<span class="_ _0"></span> to the bri<span class="_ _1"></span>d<span class="_ _0"></span>g<span class="_ _1"></span>e<span class="_ _0"></span>-<span class="_ _1"></span>spec<span class="_ _0"></span>i<span class="_ _1"></span>fic design a<span class="_ _1"></span>nd<span class="_ _0"></span> er<span class="_ _1"></span>ect<span class="_ _0"></span>i<span class="_ _1"></span>on of<span class="_ _1"></span> <span class="_ _1b"></span>2 </div><div class="t m0 x1 h2 y6 ff1 fs0 fc0 sc0 ls0 ws0">sc<span class="_ _0"></span>af<span class="_ _1"></span>f<span class="_ _6"></span>o<span class="_ _0"></span>lds, wh<span class="_ _0"></span>ich was t<span class="_ _1"></span>he c<span class="_ _0"></span>a<span class="_ _6"></span>u<span class="_ _0"></span>se <span class="_ _1"></span>o<span class="_ _0"></span>f<span class="_ _1"></span> man<span class="_ _0"></span>y<span class="_ _6"></span> se<span class="_ _0"></span>rious<span class="_ _0"></span> <span class="_ _6"></span>fail<span class="_ _0"></span>ures (<span class="ffb">1</span>),<span class="_ _1"></span> (<span class="ffb">2</span>), (<span class="ffb">3</span>), (<span class="ffb">4</span>), (<span class="ffb">5</span>), (<span class="ffb">6</span>), (<span class="_ _1"></span><span class="ffb">7<span class="_ _0"></span><span class="ff1">)<span class="_ _1"></span>, (<span class="ffb">8</span>). T<span class="_ _0"></span>oday <span class="_ _1c"></span>3 </span></span></div><div class="t m0 x1 h2 y7 ff1 fs0 fc0 sc0 ls0 ws0">brid<span class="_ _0"></span>g<span class="_ _1"></span>e<span class="_ _0"></span> <span class="_ _1"></span>scaff<span class="_ _6"></span>o<span class="_ _0"></span>lds are c<span class="_ _0"></span>la<span class="_ _1"></span>ssifi<span class="_ _1"></span>ed<span class="_ _0"></span> a<span class="_ _1"></span>s enginee<span class="_ _0"></span>ri<span class="_ _6"></span>n<span class="_ _0"></span>g structures and require t<span class="_ _1"></span>h<span class="_ _0"></span>e detaile<span class="_ _1"></span>d<span class="_ _0"></span> <span class="_ _1"></span>des<span class="_ _0"></span>i<span class="_ _1"></span>gn, includi<span class="_ _1"></span>n<span class="_ _0"></span>g <span class="_ _1d"></span>4 </div><div class="t m0 x1 h2 y8 ff1 fs0 fc0 sc0 ls0 ws0">all aspects<span class="_ _0"></span>,<span class="_ _1"></span> which may<span class="_ _1"></span> occur from<span class="_ _0"></span> <span class="_ _6"></span>t<span class="_ _0"></span>heir erection, throu<span class="_ _0"></span>g<span class="_ _6"></span>h<span class="_ _0"></span> th<span class="_ _1"></span>e<span class="_ _0"></span> <span class="_ _1"></span>f<span class="_ _1"></span>ul<span class="_ _0"></span>l<span class="_ _1"></span> lo<span class="_ _0"></span>a<span class="_ _1"></span>d<span class="_ _0"></span>i<span class="_ _1"></span>n<span class="_ _0"></span>g <span class="_ _1"></span>of <span class="_ _6"></span>t<span class="_ _0"></span>he<span class="_ _0"></span> <span class="_ _1"></span>spans during<span class="_ _0"></span> <span class="_ _1e"></span>5 </div><div class="t m0 x1 h2 y9 ff1 fs0 fc0 sc0 ls0 ws0">concreting, to<span class="_ _0"></span> <span class="_ _1"></span>their dismantling, i<span class="_ _1"></span>n<span class="_ _0"></span> ac<span class="_ _1"></span>cord<span class="_ _0"></span>a<span class="_ _6"></span>nc<span class="_ _0"></span>e with the<span class="_ _0"></span> <span class="_ _6"></span>cu<span class="_ _0"></span>rr<span class="_ _1"></span>en<span class="_ _0"></span>t g<span class="_ _1"></span>uidelines<span class="_ _0"></span> <span class="_ _1"></span>(PN-M-<span class="_ _1"></span>47900<span class="_ _0"></span>-<span class="_ _1"></span>3<span class="_ _0"></span> <span class="_ _1"></span>(<span class="ffb">9</span>),<span class="_ _1"></span> <span class="_ _1f"></span>6 </div><div class="t m0 x1 h2 ya ff1 fs0 fc0 sc0 ls0 ws0">PN-M-47900<span class="_ _0"></span>-<span class="_ _6"></span>1<span class="_ _0"></span> (<span class="_ _1"></span><span class="ffb">10<span class="_ _0"></span><span class="ff1">)<span class="_ _1"></span>, and<span class="_ _0"></span> <span class="_ _1"></span>PN-M-48090 (<span class="_ _1"></span><span class="ffb">1<span class="_ _0"></span>1<span class="ff1">). When new brid<span class="_ _0"></span>g<span class="_ _6"></span>e<span class="_ _0"></span> str<span class="_ _1"></span>uc<span class="_ _0"></span>t<span class="_ _1"></span>u<span class="_ _0"></span>r<span class="_ _6"></span>e<span class="_ _0"></span>s are built over <span class="_ _1"></span>trans<span class="_ _0"></span>port <span class="_ _20"></span>7 </span></span></span></span></div><div class="t m0 x1 h2 yb ff1 fs0 fc0 sc0 ls0 ws0">obstac<span class="_ _0"></span>l<span class="_ _1"></span>es, <span class="_ _1"></span>the<span class="_ _0"></span> co<span class="_ _1"></span>n<span class="_ _0"></span>tin<span class="_ _1"></span>ui<span class="_ _0"></span>ty<span class="_ _1"></span> of <span class="_ _6"></span>v<span class="_ _0"></span>ehicle<span class="_ _0"></span> tr<span class="_ _1"></span>affic must be ensu<span class="_ _0"></span>r<span class="_ _6"></span>ed<span class="_ _0"></span>, <span class="_ _1"></span>p<span class="_ _0"></span>ar<span class="_ _1"></span>ticu<span class="_ _0"></span>lar<span class="_ _1"></span>ly<span class="_ _1"></span> on<span class="_ _0"></span> natio<span class="_ _1"></span>n<span class="_ _0"></span>al <span class="_ _1"></span>roads<span class="_ _0"></span>,<span class="_ _1"></span> which <span class="_ _21"></span>8 </div><div class="t m0 x1 h2 yc ff1 fs0 fc0 sc0 ls0 ws0">carry <span class="_ _1"></span>t<span class="_ _0"></span>r<span class="_ _1"></span>a<span class="_ _0"></span>f<span class="_ _1"></span>fic throu<span class="_ _0"></span>g<span class="_ _1"></span>h the whole<span class="_ _0"></span> <span class="_ _6"></span>b<span class="_ _0"></span>ridge c<span class="_ _1"></span>on<span class="_ _0"></span>str<span class="_ _6"></span>u<span class="_ _0"></span>ction period (<span class="ffb">12</span>),<span class="_ _1"></span> (<span class="ffb">1<span class="_ _0"></span>3</span>),<span class="_ _1"></span> (<span class="ffb">14</span>). <span class="_ _22"></span>9 </div><div class="t m0 xa h2 yd ff1 fs0 fc0 sc0 ls0 ws0">Unfortunately,<span class="_ _1"></span> th<span class="_ _0"></span>e heavy <span class="_ _1"></span>truck<span class="_ _0"></span>s (<span class="_ _1"></span>e<span class="_ _0"></span>.<span class="_ _6"></span>g<span class="_ _0"></span>.<span class="_ _1"></span> T<span class="_ _0"></span>I<span class="_ _1"></span>R lorries) and t<span class="_ _0"></span>r<span class="_ _1"></span>actor-tr<span class="_ _1"></span>aile<span class="_ _0"></span>r<span class="_ _1"></span> uni<span class="_ _0"></span>ts <span class="_ _1"></span>carrying var<span class="_ _1"></span>io<span class="_ _0"></span>us <span class="_ _23"></span>1<span class="_ _0"></span>0 </div><div class="t m0 x1 h2 ye ff1 fs0 fc0 sc0 ls0 ws0">machines<span class="_ _0"></span> a<span class="_ _6"></span>nd<span class="_ _0"></span> <span class="_ _1"></span>equip<span class="_ _0"></span>m<span class="_ _1"></span>ent<span class="_ _0"></span> <span class="_ _6"></span>d<span class="_ _0"></span>rive thro<span class="_ _1"></span>u<span class="_ _0"></span>g<span class="_ _1"></span>h the<span class="_ _0"></span> <span class="_ _1"></span>clearance gates<span class="_ _0"></span> <span class="_ _1"></span>shaped in the scaff<span class="_ _1"></span>old<span class="_ _0"></span>s <span class="_ _1"></span>us<span class="_ _0"></span>i<span class="_ _1"></span>n<span class="_ _0"></span>g <span class="_ _6"></span>du<span class="_ _0"></span>ring <span class="_ _24"></span>1<span class="_ _0"></span>1 </div><div class="t m0 x1 h2 yf ff1 fs0 fc0 sc0 ls0 ws0">bu<span class="_ _0"></span>il<span class="_ _1"></span>ding<span class="_ _0"></span> <span class="_ _6"></span>o<span class="_ _0"></span>f<span class="_ _6"></span> mo<span class="_ _0"></span>torway<span class="_ _1"></span> brid<span class="_ _0"></span>ge structures most of<span class="_ _1"></span>ten<span class="_ _0"></span> <span class="_ _1"></span>strike at the new scaff<span class="_ _6"></span>o<span class="_ _0"></span>ld co<span class="_ _0"></span>m<span class="_ _1"></span>ponen<span class="_ _0"></span>ts al<span class="_ _1"></span>ready <span class="_ _25"></span>1<span class="_ _0"></span>2 </div><div class="t m0 x1 h2 y10 ff1 fs0 fc0 sc0 ls0 ws0">bu<span class="_ _0"></span>ilt.<span class="_ _1"></span> I<span class="_ _1"></span>t re<span class="_ _0"></span>f<span class="_ _6"></span>e<span class="_ _0"></span>rs <span class="_ _1"></span>th<span class="_ _0"></span>ese<span class="_ _0"></span> <span class="_ _6"></span>bo<span class="_ _0"></span>th as well as th<span class="_ _1"></span>e tru<span class="_ _0"></span>ck<span class="_ _1"></span>s o<span class="_ _0"></span>f<span class="_ _6"></span> permiss<span class="_ _0"></span>ible a<span class="_ _1"></span>nd<span class="_ _0"></span> <span class="_ _6"></span>o<span class="_ _0"></span>ver normative dimensions <span class="_ _26"></span>1<span class="_ _0"></span>3 </div><div class="t m0 x1 h2 y11 ff1 fs0 fc0 sc0 ls0 ws0">which<span class="_ _0"></span> <span class="_ _1"></span>main<span class="_ _0"></span>l<span class="_ _1"></span>y <span class="_ _1"></span>conduc<span class="_ _0"></span>ti<span class="_ _1"></span>ng to<span class="_ _0"></span> <span class="_ _1"></span>se<span class="_ _0"></span>r<span class="_ _1"></span>io<span class="_ _1"></span>us<span class="_ _0"></span> <span class="_ _1"></span>damages o<span class="_ _0"></span>f<span class="_ _1"></span> <span class="_ _1"></span>sca<span class="_ _0"></span>f<span class="_ _1"></span>f<span class="_ _1"></span>ol<span class="_ _0"></span>ds <span class="_ _1"></span>or th<span class="_ _0"></span>eir<span class="_ _1"></span> struc<span class="_ _0"></span>t<span class="_ _1"></span>ural elements<span class="_ _0"></span>.<span class="_ _1"></span> <span class="_ _27"></span>1<span class="_ _0"></span>4 </div><div class="t m0 xa h2 y12 ff1 fs0 fc0 sc0 ls0 ws0">Using as example motorway vi<span class="_ _1"></span>adu<span class="_ _0"></span>cts WD-1<span class="_ _1"></span>4<span class="_ _0"></span> and <span class="_ _1"></span>WD-<span class="_ _1"></span>1<span class="_ _0"></span>2 b<span class="_ _1"></span>ui<span class="_ _0"></span>lt over <span class="_ _1"></span>n<span class="_ _0"></span>ati<span class="_ _1"></span>onal road A-18 <span class="_ _24"></span>1<span class="_ _0"></span>5 </div><div class="t m0 x1 h2 y13 ff1 fs0 fc0 sc0 ls0 ws0">(which i<span class="_ _0"></span>s <span class="_ _1"></span>being upgraded), <span class="_ _1"></span>the<span class="_ _0"></span> f<span class="_ _1"></span>ailures of t<span class="_ _1"></span>h<span class="_ _0"></span>e sc<span class="_ _0"></span>af<span class="_ _1"></span>fold<span class="_ _1"></span>s<span class="_ _0"></span> ere<span class="_ _1"></span>cted<span class="_ _0"></span> <span class="_ _1"></span>to build on site the conc<span class="_ _0"></span>r<span class="_ _6"></span>e<span class="_ _0"></span>te <span class="_ _14"></span>1<span class="_ _0"></span>6 </div><div class="t m0 x1 h2 y14 ff1 fs0 fc0 sc0 ls0 ws0">ob<span class="_ _0"></span>j<span class="_ _6"></span>e<span class="_ _0"></span>cts are des<span class="_ _1"></span>c<span class="_ _0"></span>r<span class="_ _1"></span>ibed and<span class="_ _0"></span> <span class="_ _1"></span>their <span class="_ _1"></span>c<span class="_ _0"></span>aus<span class="_ _1"></span>e<span class="_ _0"></span>s ar<span class="_ _1"></span>e explained<span class="_ _0"></span>.<span class="_ _6"></span> T<span class="_ _0"></span>he <span class="_ _1"></span>cases<span class="_ _0"></span> <span class="_ _6"></span>c<span class="_ _0"></span>onsidered<span class="_ _0"></span> <span class="_ _6"></span>here<span class="_ _0"></span> a<span class="_ _1"></span>nd<span class="_ _0"></span> <span class="_ _1"></span>the<span class="_ _0"></span> <span class="_ _6"></span>ones<span class="_ _0"></span> <span class="_ _28"></span>1<span class="_ _0"></span>7 </div><div class="t m0 x1 h2 y15 ff1 fs0 fc0 sc0 ls0 ws0">presented<span class="_ _0"></span> <span class="_ _1"></span>previously (<span class="_ _6"></span><span class="ffb">1<span class="_ _0"></span><span class="ff1">), (</span>2<span class="ff1">), (</span>7<span class="ff1">), (</span>13<span class="_ _0"></span><span class="ff1">),<span class="_ _6"></span> (<span class="ffb">1<span class="_ _0"></span>4</span>), (<span class="ffb">15</span>), (<span class="ffb">16</span>) clearly show the need to m<span class="_ _1"></span>od<span class="_ _0"></span>if<span class="_ _1"></span>y and<span class="_ _0"></span> <span class="_ _29"></span>1<span class="_ _0"></span>8 </span></span></div><div class="t m0 x1 h2 y16 ff1 fs0 fc0 sc0 ls0 ws0">update the guidelines<span class="_ _0"></span> <span class="_ _1"></span>f<span class="_ _1"></span>or erect<span class="_ _0"></span>ing s<span class="_ _1"></span>caff<span class="_ _6"></span>o<span class="_ _0"></span>ld<span class="_ _0"></span>s f<span class="_ _6"></span>o<span class="_ _0"></span>r t<span class="_ _1"></span>h<span class="_ _0"></span>e bui<span class="_ _0"></span>l<span class="_ _1"></span>ding of r<span class="_ _1"></span>o<span class="_ _0"></span>ad bri<span class="_ _1"></span>d<span class="_ _0"></span>g<span class="_ _1"></span>e<span class="_ _0"></span> <span class="_ _1"></span>struc<span class="_ _0"></span>t<span class="_ _6"></span>u<span class="_ _0"></span>res. <span class="_ _1"></span>Th<span class="_ _0"></span>i<span class="_ _1"></span>s <span class="_ _10"></span>1<span class="_ _0"></span>9 </div><div class="t m0 x1 h2 y17 ff1 fs0 fc0 sc0 ls0 ws0">appl<span class="_ _0"></span>i<span class="_ _6"></span>e<span class="_ _0"></span>s particularly<span class="_ _1"></span> to the min<span class="_ _0"></span>imum hea<span class="_ _1"></span>droom (vertica<span class="_ _0"></span>l<span class="_ _1"></span> c<span class="_ _0"></span>l<span class="_ _6"></span>e<span class="_ _0"></span>aran<span class="_ _1"></span>ce) since<span class="_ _0"></span> <span class="_ _1"></span>the<span class="_ _0"></span> <span class="_ _6"></span>cu<span class="_ _0"></span>rr<span class="_ _1"></span>en<span class="_ _0"></span>t stan<span class="_ _1"></span>dard<span class="_ _0"></span> <span class="_ _6"></span>o<span class="_ _0"></span>ne <span class="_ _25"></span>2<span class="_ _0"></span>0 </div><div class="t m0 x1 h2 y18 ff1 fs0 fc0 sc0 ls0 ws0">is in<span class="_ _0"></span>a<span class="_ _6"></span>d<span class="_ _0"></span>equate. <span class="_ _1"></span>T<span class="_ _0"></span>he a<span class="_ _1"></span>bo<span class="_ _0"></span>v<span class="_ _1"></span>e considerations should be tak<span class="_ _1"></span>en<span class="_ _0"></span> i<span class="_ _1"></span>n<span class="_ _0"></span>t<span class="_ _1"></span>o<span class="_ _0"></span> <span class="_ _1"></span>account i<span class="_ _1"></span>n<span class="_ _0"></span> <span class="_ _1"></span>the designs of brid<span class="_ _0"></span>g<span class="_ _1"></span>e <span class="_ _2a"></span>2<span class="_ _0"></span>1 </div><div class="t m0 x1 h2 y19 ff1 fs0 fc0 sc0 ls0 ws0">structures. <span class="_ _2b"></span>2<span class="_ _0"></span>2 </div><div class="t m0 x1 h2 y1a ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _b"></span>2<span class="_ _0"></span>3 </div><div class="t m0 x1 h4 y35 ff2 fs0 fc0 sc0 ls0 ws0">DESCRIPTIO<span class="_ _0"></span>N <span class="_ _6"></span>O<span class="_ _0"></span>F OLD AND NEW <span class="_ _1"></span>VI<span class="_ _0"></span>ADUC<span class="_ _1"></span>T WD-14<span class="_ _0"></span> <span class="_ _2c"></span><span class="ff1">2<span class="_ _0"></span>4 </span></div><div class="t m0 x1 h2 y1c ff1 fs0 fc0 sc0 ls0 ws0">The<span class="_ _0"></span> <span class="_ _1"></span>old rei<span class="_ _1"></span>nforced<span class="_ _0"></span> concrete via<span class="_ _6"></span>d<span class="_ _0"></span>uct (built in 1934) consisted<span class="_ _0"></span> <span class="_ _6"></span>o<span class="_ _0"></span>f<span class="_ _1"></span> two spans<span class="_ _0"></span> <span class="_ _6"></span>h<span class="_ _0"></span>aving an eff<span class="_ _1"></span>e<span class="_ _0"></span>ctive <span class="_ _2d"></span>2<span class="_ _0"></span>5 </div><div class="t m0 x1 h2 y1d ff1 fs0 fc0 sc0 ls0 ws0">leng<span class="_ _0"></span>t<span class="_ _6"></span>h<span class="_ _0"></span> <span class="ffb">l</span></div><div class="t m0 xa h6 y36 ff1 fs2 fc0 sc0 ls0 ws0">e</div><div class="t m0 xb h2 y1d ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _1"></span>=<span class="_ _0"></span> <span class="_ _1"></span>14<span class="_ _0"></span>.00 + 1<span class="_ _1"></span>4.00 =<span class="_ _0"></span> <span class="_ _1"></span>28.00 m. <span class="_ _1"></span>The<span class="_ _0"></span> s<span class="_ _1"></span>p<span class="_ _0"></span>a<span class="_ _6"></span>n<span class="_ _0"></span> overall width was 6<span class="_ _0"></span>.<span class="_ _6"></span>7<span class="_ _0"></span>6 m, loa<span class="_ _1"></span>d<span class="_ _0"></span> <span class="_ _1"></span>c<span class="_ _0"></span>la<span class="_ _1"></span>ss D (200 kN)<span class="_ _1"></span> <span class="_ _24"></span>2<span class="_ _0"></span>6<span class="_ _0"></span> </div><div class="t m0 x1 h2 y1e ff1 fs0 fc0 sc0 ls0 ws0">acco<span class="_ _0"></span>r<span class="_ _6"></span>d<span class="_ _0"></span>ing t<span class="_ _1"></span>o the<span class="_ _0"></span> PN-<span class="_ _1"></span>85<span class="_ _0"></span>/S-<span class="_ _6"></span>10<span class="_ _0"></span>03<span class="_ _1"></span>0<span class="_ _0"></span> <span class="_ _1"></span>(<span class="ffb">17<span class="_ _0"></span></span>), t<span class="_ _1"></span>he vertica<span class="_ _0"></span>l <span class="_ _6"></span>c<span class="_ _0"></span>l<span class="_ _1"></span>e<span class="_ _0"></span>ar<span class="_ _1"></span>ance – 4.53 m. <span class="_ _1"></span>T<span class="_ _0"></span>he viaduct was situated <span class="_ _24"></span>2<span class="_ _0"></span>7 </div><div class="t m0 x1 h2 y37 ff1 fs0 fc0 sc0 ls0 ws0">at a skew of 45<span class="ffc"></span> to the<span class="_ _0"></span> r<span class="_ _1"></span>o<span class="_ _0"></span>a<span class="_ _6"></span>d<span class="_ _0"></span>’s l<span class="_ _1"></span>ong<span class="_ _0"></span>i<span class="_ _1"></span>tudin<span class="_ _0"></span>a<span class="_ _1"></span>l axis. Because of <span class="_ _1"></span>the<span class="_ _0"></span> via<span class="_ _1"></span>duct’s bad techn<span class="_ _0"></span>i<span class="_ _1"></span>cal condi<span class="_ _0"></span>t<span class="_ _6"></span>ion<span class="_ _0"></span>,<span class="_ _1"></span> <span class="_ _2e"></span>2<span class="_ _0"></span>8 </div><div class="t m0 x1 h2 y38 ff1 fs0 fc0 sc0 ls0 ws0">it was not wo<span class="_ _0"></span>r<span class="_ _1"></span>thwh<span class="_ _0"></span>i<span class="_ _6"></span>l<span class="_ _0"></span>e to <span class="_ _1"></span>upgrade it and so<span class="_ _0"></span> <span class="_ _6"></span>i<span class="_ _0"></span>t w<span class="_ _1"></span>as de<span class="_ _0"></span>m<span class="_ _6"></span>o<span class="_ _0"></span>lished (Figure 1). <span class="_ _2f"></span>2<span class="_ _0"></span>9 </div><div class="t m0 xa h2 y39 ff1 fs0 fc0 sc0 ls0 ws0">The<span class="_ _0"></span> <span class="_ _1"></span>new viaduct is l<span class="_ _1"></span>o<span class="_ _0"></span>cate<span class="_ _1"></span>d<span class="_ _0"></span> <span class="_ _1"></span>at the 0+179<span class="_ _0"></span>.<span class="_ _6"></span>79<span class="_ _0"></span> km of<span class="_ _1"></span> Ciso<span class="_ _0"></span>wa <span class="_ _6"></span>–<span class="_ _0"></span> Jedrzy<span class="_ _1"></span>c<span class="_ _0"></span>howiczki (<span class="_ _1"></span>Henrykow) <span class="_ _23"></span>3<span class="_ _0"></span>0 </div><div class="t m0 x1 h2 y3a ff1 fs0 fc0 sc0 ls0 ws0">local road No<span class="_ _0"></span>.<span class="_ _6"></span> 49<span class="_ _0"></span>18<span class="_ _1"></span>009<span class="_ _0"></span> bei<span class="_ _1"></span>n<span class="_ _0"></span>g <span class="_ _1"></span>upgraded. The viad<span class="_ _1"></span>uct<span class="_ _0"></span> m<span class="_ _1"></span>akes possible the s<span class="_ _0"></span>a<span class="_ _1"></span>f<span class="_ _1"></span>e cro<span class="_ _0"></span>s<span class="_ _1"></span>sing o<span class="_ _0"></span>f<span class="_ _1"></span> <span class="_ _1"></span>n<span class="_ _0"></span>ational <span class="_ _23"></span>3<span class="_ _0"></span>1 </div><div class="t m0 x1 h2 y3b ff1 fs0 fc0 sc0 ls0 ws0">road<span class="_ _0"></span> <span class="_ _1"></span>N<span class="_ _1"></span>o<span class="_ _0"></span>.<span class="_ _1"></span> 18<span class="_ _0"></span> <span class="_ _1"></span>at its 13+634.37<span class="_ _0"></span> <span class="_ _1"></span>km. The designed viaduct WD-14 is located in the p<span class="_ _0"></span>l<span class="_ _1"></span>ace of<span class="_ _1"></span> th<span class="_ _0"></span>e <span class="_ _1"></span>old <span class="_ _8"></span>3<span class="_ _0"></span>2<span class="_ _0"></span> </div><div class="t m0 x1 h2 y3c ff1 fs0 fc0 sc0 ls0 ws0">de<span class="_ _0"></span>m<span class="_ _1"></span>olished one (Figure 1). <span class="_ _30"></span>3<span class="_ _0"></span>3 </div><div class="t m0 xa h2 y3d ff1 fs0 fc0 sc0 ls0 ws0">The<span class="_ _0"></span> <span class="_ _1"></span>new reinfor<span class="_ _1"></span>ced<span class="_ _0"></span> <span class="_ _1"></span>conc<span class="_ _0"></span>r<span class="_ _1"></span>ete viaduct with a tra<span class="_ _1"></span>pezo<span class="_ _0"></span>i<span class="_ _1"></span>d<span class="_ _0"></span>al <span class="_ _1"></span>single-girder cross section and a <span class="_ _31"></span>3<span class="_ _0"></span>4 </div><div class="t m0 x1 h2 y3e ff1 fs0 fc0 sc0 ls0 ws0">cont<span class="_ _0"></span>i<span class="_ _6"></span>n<span class="_ _0"></span>uous-beam <span class="_ _1"></span>s<span class="_ _0"></span>tati<span class="_ _1"></span>c sche<span class="_ _0"></span>m<span class="_ _1"></span>e has f<span class="_ _6"></span>o<span class="_ _0"></span>u<span class="_ _0"></span>r <span class="_ _6"></span>s<span class="_ _0"></span>pans with<span class="_ _0"></span> <span class="_ _1"></span>an eff<span class="_ _6"></span>e<span class="_ _0"></span>ctive<span class="_ _0"></span> l<span class="_ _1"></span>en<span class="_ _0"></span>g<span class="_ _6"></span>th<span class="_ _0"></span> <span class="ffb">l</span></div><div class="t m0 xc h6 y3f ff1 fs2 fc0 sc0 ls0 ws0">e</div><div class="t m0 xd h2 y3e ff1 fs0 fc0 sc0 ls0 ws0"> = 18<span class="_ _0"></span>.<span class="_ _1"></span>00<span class="_ _0"></span> + <span class="_ _1"></span>27.00 + 27<span class="_ _0"></span>.<span class="_ _1"></span>00 <span class="_ _32"></span>3<span class="_ _0"></span>5 </div><div class="t m0 x1 h2 y40 ff1 fs0 fc0 sc0 ls0 ws0">+ 18<span class="_ _0"></span>.<span class="_ _6"></span>0<span class="_ _0"></span>0 = 90.00 m. The axes of<span class="_ _1"></span> the<span class="_ _0"></span> s<span class="_ _1"></span>uppo<span class="_ _0"></span>r<span class="_ _1"></span>ts are para<span class="_ _1"></span>lle<span class="_ _0"></span>l <span class="_ _1"></span>to<span class="_ _0"></span> <span class="_ _1"></span>the<span class="_ _0"></span> <span class="_ _1"></span>national r<span class="_ _1"></span>o<span class="_ _0"></span>ad an<span class="_ _1"></span>d with<span class="_ _0"></span> t<span class="_ _1"></span>he<span class="_ _0"></span> <span class="_ _1b"></span>3<span class="_ _0"></span>6 </div><div class="t m0 x1 h2 y41 ff1 fs0 fc0 sc0 ls0 ws0">viaduct’s lon<span class="_ _0"></span>gi<span class="_ _1"></span>tudinal axis f<span class="_ _1"></span>orm an an<span class="_ _0"></span>gle of<span class="_ _1"></span> <span class="_ _1"></span>4<span class="_ _0"></span>4.99’. <span class="_ _1"></span>Th<span class="_ _0"></span>e mi<span class="_ _1"></span>dd<span class="_ _0"></span>l<span class="_ _1"></span>e sp<span class="_ _0"></span>a<span class="_ _6"></span>n<span class="_ _0"></span>s cr<span class="_ _1"></span>oss<span class="_ _0"></span> <span class="_ _1"></span>the two c<span class="_ _0"></span>ar<span class="_ _6"></span>ri<span class="_ _0"></span>a<span class="_ _1"></span>ge<span class="_ _0"></span>wa<span class="_ _1"></span>ys <span class="_ _23"></span>3<span class="_ _0"></span>7<span class="_ _0"></span> </div><div class="t m0 x1 h2 y42 ff1 fs0 fc0 sc0 ls0 ws0">of t<span class="_ _1"></span>h<span class="_ _0"></span>e national road. There are technological stri<span class="_ _1"></span>p<span class="_ _0"></span>s <span class="_ _1"></span>and the<span class="_ _0"></span> l<span class="_ _6"></span>o<span class="_ _0"></span>cal r<span class="_ _1"></span>o<span class="_ _0"></span>ad <span class="_ _1"></span>embankment slopes under <span class="_ _16"></span>3<span class="_ _0"></span>8<span class="_ _0"></span> </div><div class="t m0 x1 h2 y43 ff1 fs0 fc0 sc0 ls0 ws0">the ex<span class="_ _0"></span>tr<span class="_ _6"></span>e<span class="_ _0"></span>me spans. The mai<span class="_ _1"></span>n<span class="_ _0"></span> <span class="_ _1"></span>girde<span class="_ _0"></span>r<span class="_ _1"></span> is 1.50 m high a<span class="_ _1"></span>nd<span class="_ _0"></span> 2.<span class="_ _1"></span>70 m and 3<span class="_ _0"></span>.<span class="_ _6"></span>20<span class="_ _0"></span> m <span class="_ _1"></span>wide<span class="_ _0"></span> <span class="_ _1"></span>respectively a<span class="_ _1"></span>t <span class="_ _33"></span>3<span class="_ _0"></span>9 </div><div class="t m0 x1 h2 y44 ff1 fs0 fc0 sc0 ls0 ws0">the bottom and top (at <span class="_ _1"></span>th<span class="_ _0"></span>e level <span class="_ _1"></span>of the<span class="_ _0"></span> ca<span class="_ _6"></span>n<span class="_ _0"></span>tilevers’ bo<span class="_ _0"></span>tt<span class="_ _1"></span>om). The cant<span class="_ _0"></span>i<span class="_ _1"></span>levers’ <span class="_ _1"></span>width<span class="_ _0"></span> v<span class="_ _1"></span>aries<span class="_ _0"></span> <span class="_ _1"></span>fr<span class="_ _1"></span>o<span class="_ _0"></span>m <span class="_ _33"></span>4<span class="_ _0"></span>0 </div><div class="t m0 x1 h2 y45 ff1 fs0 fc0 sc0 ls0 ws0">0.21 to 0.40<span class="_ _0"></span> <span class="_ _1"></span>m and t<span class="_ _1"></span>he<span class="_ _0"></span>ir<span class="_ _1"></span> outreach<span class="_ _0"></span> i<span class="_ _1"></span>s 1.90 m. <span class="_ _1"></span>T<span class="_ _0"></span>he o<span class="_ _1"></span>ve<span class="_ _0"></span>ra<span class="_ _1"></span>ll width o<span class="_ _0"></span>f<span class="_ _6"></span> th<span class="_ _0"></span>e load-<span class="_ _1"></span>c<span class="_ _0"></span>arr<span class="_ _1"></span>ying structure<span class="_ _0"></span> i<span class="_ _1"></span>s<span class="_ _0"></span> <span class="_ _33"></span>4<span class="_ _0"></span>1 </div><div class="t m0 x1 h2 y46 ff1 fs0 fc0 sc0 ls0 ws0">7.00 m. The<span class="_ _0"></span> <span class="_ _6"></span>o<span class="_ _0"></span>vera<span class="_ _1"></span>ll width o<span class="_ _0"></span>f<span class="_ _1"></span> <span class="_ _1"></span>th<span class="_ _0"></span>e viaduct is <span class="ffb">B</span> = 7.70 m, <span class="_ _1"></span>inc<span class="_ _0"></span>l<span class="_ _1"></span>uding the ro<span class="_ _0"></span>a<span class="_ _6"></span>d<span class="_ _0"></span>way<span class="_ _1"></span> be<span class="_ _0"></span>twe<span class="_ _1"></span>en<span class="_ _0"></span> <span class="_ _1"></span>the<span class="_ _0"></span> <span class="_ _1"></span>curbs <span class="_ _34"></span>4<span class="_ _0"></span>2 </div><div class="t m0 x1 h2 y47 ff1 fs0 fc0 sc0 ls0 ws0">(6.10 m) and side<span class="_ _0"></span>wa<span class="_ _1"></span>lks<span class="_ _0"></span> <span class="_ _1"></span>with t<span class="_ _1"></span>he rigid b<span class="_ _0"></span>ar<span class="_ _1"></span>riers (2 × 0.80 m). The viaduct<span class="_ _0"></span>’<span class="_ _1"></span>s total s<span class="_ _1"></span>ur<span class="_ _0"></span>f<span class="_ _1"></span>ace<span class="_ _0"></span> <span class="_ _1"></span>ar<span class="_ _1"></span>e<span class="_ _0"></span>a <span class="_ _35"></span>4<span class="_ _0"></span>3 </div><div class="t m0 x1 h2 y48 ff1 fs0 fc0 sc0 ls0 ws0">bounded by the dec<span class="_ _0"></span>k <span class="_ _1"></span>edges is <span class="ffb">A</span> = 7.70 × 9<span class="_ _1"></span>2<span class="_ _0"></span>.<span class="_ _1"></span>10<span class="_ _0"></span> <span class="_ _1"></span>= 709<span class="_ _0"></span>.<span class="_ _6"></span>17<span class="_ _0"></span> m</div><div class="t m0 xe h6 y49 ff1 fs2 fc0 sc0 ls0 ws0">2</div><div class="t m0 xf h2 y48 ff1 fs0 fc0 sc0 ls0 ws0">. The l<span class="_ _0"></span>ocal roa<span class="_ _6"></span>d<span class="_ _0"></span>’s techn<span class="_ _0"></span>i<span class="_ _6"></span>c<span class="_ _0"></span>al class is L <span class="_ _2e"></span>4<span class="_ _0"></span>4<span class="_ _0"></span> </div><div class="t m0 x1 h2 y4a ff1 fs0 fc0 sc0 ls0 ws0">(<span class="ffb">4</span>), (<span class="_ _1"></span><span class="ffb">5<span class="_ _0"></span><span class="ff1">)<span class="_ _1"></span>. The<span class="_ _0"></span> tar<span class="_ _1"></span>ge<span class="_ _0"></span>t<span class="_ _1"></span> traffi<span class="_ _1"></span>c<span class="_ _0"></span> <span class="_ _1"></span>c<span class="_ _0"></span>learan<span class="_ _1"></span>ce under the<span class="_ _0"></span> vi<span class="_ _1"></span>aduct<span class="_ _0"></span> <span class="_ _1"></span>is <span class="ffb">H</span></span></span></div><div class="t m0 x10 h6 y4b ff1 fs2 fc0 sc0 ls0 ws0">c</div><div class="t m0 x11 h2 y4a ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_ _1"></span>=<span class="_ _0"></span> <span class="_ _1"></span>4<span class="_ _0"></span>.<span class="_ _1"></span>70<span class="_ _0"></span> m.<span class="_ _1"></span> The viaduct<span class="_ _0"></span> <span class="_ _1"></span>traff<span class="_ _6"></span>i<span class="_ _0"></span>c load<span class="_ _0"></span>i<span class="_ _1"></span>ng<span class="_ _0"></span> <span class="_ _36"></span>4<span class="_ _0"></span>5 </div><div class="t m0 x1 h2 y4c ff1 fs0 fc0 sc0 ls0 ws0">is as for <span class="_ _1"></span>c<span class="_ _0"></span>lass B (400 kN)<span class="_ _1"></span> acco<span class="_ _0"></span>r<span class="_ _1"></span>d<span class="_ _0"></span>i<span class="_ _1"></span>n<span class="_ _0"></span>g t<span class="_ _6"></span>o<span class="_ _0"></span> the P<span class="_ _1"></span>o<span class="_ _0"></span>lish Br<span class="_ _1"></span>id<span class="_ _0"></span>g<span class="_ _1"></span>e Load Standa<span class="_ _0"></span>r<span class="_ _6"></span>d<span class="_ _0"></span> <span class="_ _1"></span>PN-8<span class="_ _0"></span>5/S-<span class="_ _1"></span>10030 (<span class="ffb">17</span>). <span class="_ _1f"></span>4<span class="_ _0"></span>6 </div><div class="t m0 x8 h5 y32 ffd fs1 fc0 sc0 ls0 ws0">TRB 2010 Annual Meeting CD-ROM<span class="_ _e"> </span><span class="ffe">Original paper submittal - not revised by author.<span class="_ _f"></span><span class="fff">TRB 2010 Annual Meeting CD-ROM<span class="_ _e"> </span><span class="ff10">Original paper submittal - not revised by author.</span></span></span></div></div><div class="pi" data-data='{"ctm":[1.613445,0.000000,0.000000,1.613445,0.000000,0.000000]}'></div></div>