SMW工法围护结构基坑变形实例分析

在深基坑工程施工中,变形预测的重要性越来越突出,以上海市中环线北虹路下立交工程基坑施工为例,采用杆系有限元方法对 SMW 工法围护结构的水平位移和弯矩分布进行了计算,并与实测值进行了比较分析。最后,提出了减小围护结构变形的施工措施,以期对基坑工程施工有所帮助。

CASE ANALYSIS ON DEFORMATION OF FOUNDATION PIT WITH SMW RETAINING STRUCTURES

In the deep pit engineering construction,deformation forecast of deep excavation is more and more outstanding.In this paper,the finite element method of bar system was expounded by taking the enclosure foundation pit construction of underground traffic project in Beihong Road,Shanghai as an example.The analysis of deformation and torque distribution of SMW retaining structures have been carried out.The comparison of the finite element method result of SMW retaining structures with measured results in situation have been studied too.Finally,some reasonable suggestions were brought about to solve the problems commonly encountered in the deep pit engineering construction,in the hope of giving some help for deep pit engineering constructions.