
第
38
卷 第
5
期
安徽理工大学学报
(
自然科学版
) Vol. 38 No. 5
2018
年
9
月
Journal of Anhui University of Science and Technology( Natural Science)
Sep. 2018
堆载作用对临近隧道深基坑开挖的影响
王 强
,
钱 程
,
崔
进杨
(
安徽理工大学土木建筑学院
,
安
徽 淮南
232001)
摘 要
:
运
用
Midas GTS
有限元模拟软件
,
对某临近地铁隧道深基坑工程施工过程进行模拟分
析
。
考虑到实际施工过程中可能产生的坑边堆载作用
,
模拟分析了堆载作用对深基坑开挖中
围护体与临近隧道的变形与内力的影响
,
结果表明
:
随着坑边堆载的增加
,
地连墙的水平位移
与弯矩都在增加
,
堆载为
40 kN /m
时
,
地连墙最大水平变形会比无堆载时多
8. 56% ,
地连墙最
大弯矩会比无堆载时多
4. 05% ;
随着坑边堆载的增加
,
隧道上部土体会抑制隧道向基坑方向
的变形
,
造成隧道的水平变形略有降低
,
竖向变形加大
,
隧道总变形表现为略有降低
。
研究结
果可为相关工程提供参考
。
关键词
:
深
基坑开挖
;
围护体
;
地铁隧道
; Midas GTS;
堆载
中
图分类号
: TV473
文献标志码
: A
文章编号
:
1672 - 1098( 2018) 05 - 0013 - 07
收
稿日期
: 2018 - 01 - 24
基金项目
:
中国博士后基金资助项目
( 2014M561806)
;
安徽省博士后基金资助项目
( 2015B046) ;
安
徽省高校自然科学基金资助项目
( KJ2016A831)
作者简介
:
王强
( 1978 - )
,
男
,
河
北定州人
,
副教授
,
博士
,
硕士生导师
,
研究方向
:
岩土工程方面的教学和科研
。
Influence of Surcharge Loads on the Excavation of
Deep Foundation Pit Near the Tunnel
WANG Qiang,QIAN Cheng,CUI Jin - yang
( School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan Anhui 232001,China)
Abstract: Through the Midas GTS finite element simulation software,simulation analysis was carried out for the
construction of a deep foundation pit near the subway tunnel. Taking into account the possible effect of surcharge
loads on the side of the pit during the actual construction process,the influence of surcharge loading on the de-
formation and internal force were analyzed in the excavation of deep foundation pit and the adjacent tunnel enclo-
sing. The results show that the horizontal displacement and bending moment of the diaphragm wall were increas-
ing with the increase of surcharge loads on the side of the pit. When the surcharge loads was 40kN /m,the maxi-
mum horizontal deformation of the underground continuous wall will be 8. 56% more than that without the sur-
charge loads,and the maximum bending moment of the underground continuous wall was 4. 05% more than that
without the surcharge loads. With the increase of surcharge loads ,upper soil mass of tunnel would inhibit the de-
formation of the tunnel to the direction of the foundation pit,with the horizontal deformation of the tunnel being
slightly reduced,vertical deformation being enlarged ,and the total deformation of the tunnel being slightly re-
duced. The results of this study can provide reference for relevant engineering.
Key words:
foundation excavation; enclosure; subway tunnel; foundation pit monitoring; Midas GTS; surcharge loads
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