水泥搅拌桩复合地基沉降计算探讨

在水泥搅拌桩复合地基沉降计算中,复合土层底面的附加应力确定是计算的关键,现行规范中仅给出了双层地基模式,即地基加固区及下卧层两层土层,而现实中地基加固区往往不是单层土层。本文阐述了几种多层土层加固区底面的附加应力计算方法,并结合一工程实例的沉降计算,对这几种方法对比,得出一些有益的结论。

Study on Settlement of the Cement Mixed Pile Composite Foundation

In designing cement-soil mixing piles composite ground,the bottom of the additional stress of composite layer is the key,the current specification only gives the double-ground approach that in the reinforced area and the underlying layer,and the reality often reinforced area is not single layer.In this paper,several calculation pollution of multi-layer bottom reinforcement area of additional stress is introduced,and combined with an engineering example of the settlement,contrast in several ways,and draw some useful conclusions.