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对取水泵房采用桩基支护进行深基坑开挖的设计、施工进行了比较深入的分析,通过对圆形基坑咬合式桩基支护进行受力力学分析,认为圆形深基坑桩基支护按圆柱壳的力学模型计算过于理想化。本文通过增设环形水平支撑将支护桩基转换成多跨连续梁模型进行计算,并应用于工程实际,同时提出了设计与施工过程中应注意的要点。
The design and construction of deep foundation pit excavation by using pile foundation support in water pumping station house are analyzed in depth. Based on the mechanical analysis of pile foundation supported by circular foundation pit, it is considered that circular deep foundation pit Pile foundation support is calculated by the mechanical model of cylindrical shell is too idealistic. In this paper, the support pile foundation is converted into a multi-span continuous beam model by adding a ring-shaped horizontal support, which is applied to the engineering practice. At the same time, points that should be paid attention to in the design and construction process are put forward.