复杂条件下基坑支护结构稳定性分析

Analysis of Stabilization of Foundation Pit Supporting Structure under Complicated Conditions

某深基坑工程东侧距基坑边缘3m处存在民房,基坑开挖时没有放坡条件,需采用竖直开挖方式,并有良好的稳定性,设计支护结构为桩锚支护。该文分析了该处基坑在采用桩锚支护结构后的稳定性,主要包括锚杆的稳定性、基坑的抗隆起以及抗管涌稳定性,最后得出该支护结构满足稳定性要求的结论,并提出了相应的施工建议,对于类似工程具有一定的参考价值。

There are the private houses at 3 m from the edge of the foundation pit at the east side of a deep foundation pit project. There is no the sloping condition when the foundation pit is excavated. It is required to use the vertical excavating method, and to have the good stabilization. The supporting structure to be design is the pile anchor supporting. The article analyzes the stabilization of this foundation pit after using the pile anchor supporting structure, mainly including the stabilization of the anchor rod, the raising resistance of the foundation pit and the stabilization of the piping resistance. At last, the article gives the conclusion that the supporting structure meets the requirements of the stabilization, and puts forward the relative construction suggestions, which have some referring value for the similar projects.