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- Title
地铁站深基坑桩撑支护开挖变形.
- Authors
刘性锋; 刘禹; 李辉; 吴燕开; 王粱; 魏方永; 赵虎; 任相利
- Abstract
Based on the foundation pit excavation and support of Xingcun Station of Jinan Metro, through theoretical analysis, numerical simulation and monitoring measurement, the theoretical basis of foundation pit deformation was first expounded in theory, and then the whole process of foundation pit excavation of Xingcun Station was simulated by using the finite element software ABAQUS, and combined with the on-site monitoring results. The horizontal and vertical displacement of the retaining structure, the ground settlement around the foundation pit and the axial force change of the supporting structure during the excavation of the foundation pit were analyzed. The research results show that with the excavation of the foundation pit, the top of the foundation pit presents a trend of gradually moving into the pit, and with the application of the supporting structure during the excavation process, the retaining structure as a whole presents a “bow” shaped distribution of deformation to the pit. The deformation value decreases obviously. Due to the unloading of the excavated soil mass of the foundation pit, the retaining structure appears uplift deformation. The surface settlement curve presents a U-shaped distribution, and with the gradual increase of the excavation depth of the foundation pit, the maximum surface settlement gradually increases, and the influence range of the foundation pit excavation is basically within 0 ~ 20 m. The axial force of each support shows a gradually increasing trend, and the effect of the lower support is more obvious, and the axial force of the lower support is greater than that of the upper support.
- Publication
Science Technology & Engineering, 2023, Vol 23, Issue 33, p14332
- ISSN
1671-1815
- Publication type
Article