In this paper,a three-dimensional simulation model is established by using the finite element calculation software MIDAS-GTS for a foundation pit project based on the structure of a nearby metro depot.The impact of excavation and precipitation on the structure of the depot is simulated,and the stability of the foundation pit itself is evaluated.Calculation analysis shows that the maximum total displacement of the depot structure triggered by pit excavation construction is 4.6 mm;The maximum total displacement caused by pit precipitation in finite element seepage simulation of foundation pit is 3.6 mm,and the excavation and precipitation of the foundation pit do not af-fect the safety of the structure of the vehicle depot;The stability safety coefficient of the pit itself calculated using fi-nite element simulation and traditional tool Lizheng software is 1.79 and 1.40 respectively,both meeting the re-quirement in the standard(1.25).The research conclusions can be used as a reference for the similar design and con-struction.
关键词
基坑开挖/地铁结构/仿真模拟分析/基坑降水
Key words
Excavation of foundation pit/Metro structure/Simulation and analyses/Precipitation of foundation pit
维普
万方数据