Numerical simulation of model tests on inclined retaining piles in foundation pit
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摘要: 利用 FLAC3D 数值模拟软件,对某基坑倾斜支护桩模型试验的 5 种工况分别进行了模拟分析,得到了不同支护形式、不同布桩方式下支护桩桩顶水平位移及桩身弯矩随基坑开挖的变化规律,并对不同工况下倾斜支护桩的受力特性进行了对比分析。研究表明,数值模拟结果与模型试验结果基本一致,验证了模型试验结论的可靠性及基坑倾斜桩支护较传统直桩支护的优越性,不仅为倾斜支护桩的推广应用提供了理论基础,也为其设计计算提供了一定的参考依据。Abstract: Five working conditions of model tests on the inclined retaining piles in a foundation pit are simulated respectively by means of the numerical simulation software FLAC3D. The variation laws of the horizontal displacement of pile top and the bending moment along the pile shaft with the excavation of the foundation pit under different supporting patterns and pile arrangements are obtained. The bearing behaviors of the inclined retaining piles under different working conditions are compared and analyzed. The research indicates that the results of the numerical simulation basically agree with those of the model tests, which verifies the reliability of the conclusions drawn from the model tests and the superiority of the inclined retaining piles to the traditional vertical retaining piles in the foundation pit. This research provides theoretical basis for the popularization and application of the inclined retaining piles and offers certain references for their design and calculation.
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Keywords:
- foundation pit /
- inclined retaining pile /
- FLAC3D /
- numerical simulation
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