基坑逆作法关键技术及数值模拟分析

Key Technology and Numerical Simulation Analysis of Reverse Construction Method for Foundation Pit

针对目前较为先进的逆作法基坑施工方式,文中首先叙述了施工过程中逆作法的关键施工技术;然后结合实际基坑工程,利用有限元仿真软件模拟了土体位移、沉降和围护结构的变形;最后深入研究了逆作法施工各阶段的变形规律,为基坑逆作法施工提高施工质量、改变施工条件提供了技术参考。

In view of the current more advanced top-down construction method of foundation pit, this paper first summarizes the key construction technology of top-down construction in the construction process. Then combined with the actual foundation pit engineering, the finite element simulation software is used to simulate the soil displacement, settlement and the deformation of the retaining structure, and the deformation law of each stage of the reverse construction method is deeply studied. It provides a technical reference for improving the construction quality and changing the construction conditions in the reverse construction of foundation pit.