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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。
Using FLAC3D numerical simulation software, the five kinds of working conditions of the model test of pit supporting pile in a pit are simulated and analyzed respectively. The horizontal displacement of pile top and pile bend Moment with the excavation of pit variation law, and under different conditions of inclined supporting pile force characteristics were contrastively analyzed. The results show that the numerical simulation results are basically the same as those of the model test. The reliability of the model test and the superiority of pitching support to the traditional straight pile support are verified. The theory is provided not only for the popularization and application of inclined supporting pile Basis, but also for its design and calculation provides a certain reference.