明挖单洞双向双车道基坑支护技术

Foundation Pit Support Technology based on Cut-and-Cover for Single-HoleTwo-LaneTwo-Way Road

考虑基坑支护承载力决定着基坑工程的稳定性与安全性,以实际工程为例,分析双向双车道基坑周围环境条件,寻找最佳基坑支护桩的施工区域,设计适应施工地形条件的基坑支护体系;实现稳定的单洞双向双车道基坑支护设计,工程实际验证新基坑支护承载力更高、稳定性更佳。

Considering that bearing capacity of foundation pit support determines the stability and safety of foundation pit engineering,the paper uses actual project as an example to analyze the environmental conditions around the two-way two-lane foundation pit to find the best construction area for the foundation pit supporting piles;design the foundation pit supporting structure and the stable single-hole,two-way,two-lane foundation pit support design is realized.The actual project example is used to verify that the new foundation pit support has higher bearing capacity and better stability.