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在软土区的基坑支护工程,常需对基坑坑底进行被动土加固设计,但是现行的规范没有给出明确合理的设计方法。本文通过安徽芜湖某基坑工程实例,提出了针对深厚软土区悬臂支护被动土加固高度和宽度的确定方法,同时通过理正深基坑7.0软件进行分析计算和后期对基坑位移沉降监测数据的分析对比,证明了运用该方法对该基坑进行被动土加固设计是成功的、可行的,也为类似工程的设计提供了可供参考的设计方法。
In the foundation pit supporting project in soft soil area, it is often necessary to design the passive soil consolidation of the foundation pit bottom, but the current code does not give a clear and reasonable design method. In this paper, through a case study of a foundation pit in Wuhu, Anhui Province, a method to determine the height and width of passive soil reinforcement by cantilever support in deep soft soil area is put forward. At the same time, the calculation and calculation of displacement settlement The analysis and comparison of the data prove that it is successful and feasible to apply the method to passive reinforcement design of the foundation pit and also provides a reference design method for the design of similar projects.