在时域中计算悬索桥对风湍流的耦合动态响应附matlab代码.zip

# Time-domain Buffeting response of a suspension bridge The coupled dynamic response of a suspension bridge to wind turbulence is computed in the time domain [](https://se.mathworks.com/matlabcentral/fileexchange/73436-buffeting-response-of-a-suspension-bridge-time-domain) [](https://zenodo.org/badge/latestdoi/249145922) <a href="https://www.buymeacoffee.com/echeynet" target="_blank"><img src="https://www.buymeacoffee.com/assets/img/custom_images/orange_img.png" alt="Buy Me A Coffee" style="height: 25px !important;width: 120px !important;box-shadow: 0px 3px 2px 0px rgba(190, 190, 190, 0.5) !important;-webkit-box-shadow: 0px 3px 2px 0px rgba(190, 190, 190, 0.5) !important;" ></a> ## Summary The lateral, vertical and torsional response of a suspension is computed in the time domain using computed turbulent velocity time histories. The simplified Bridge model of the Lysefjord Bridge [1] is considered for the modelling of the structure. Turbulence is modelled using the Kaimal model [2]. The quasi-steady theory, as well as the strip assumption, are used. Modal coupling between the lateral, vertical and torsional motions are accounted for in the time-domain model. ## Content The present submission contains: - The function dynaRespTD.m that computes the bridge response in the time domain (Non-linear load + modal coupling) - The function dynaResp_noCouplingTD.m that computes the bridge response in the time domain (linearised load + no modal coupling) - An example file that compares the time-domain approach with the frequency domain approach - Various functions used for the example file, including simulation of correlated wind histories [3], computation of the bridge modal parameters [4], computation of the bridge response in the frequency domain [5]. Any suggestion, comment or question is welcomed. ## References [1] Cheynet, E., Jakobsen, J. B., & Snæbjörnsson, J. (2016). Buffeting response of a suspension bridge in complex terrain. Engineering Structures, 128, 474-487. [2] Kaimal, J. C., Wyngaard, J. C. J., Izumi, Y., & Coté, O. R. (1972). Spectral characteristics of surface‐layer turbulence. Quarterly Journal of the Royal Meteorological Society, 98(417), 563-589. [3]https://se.mathworks.com/matlabcentral/fileexchange/68632-wind-field-simulation-the-fast-version [4] https://se.mathworks.com/matlabcentral/fileexchange/51815-calculation-of-the-modal-parameters-of-a-suspension-bridge [5] https://se.mathworks.com/matlabcentral/fileexchange/51970-buffeting-response-of-a-suspension-bridge-frequency-domain