在珠三角地区的特殊地质条件下，对悬臂钻孔灌注排桩在深大基坑中的力学特征进行分析。以佛山市顺德区碧桂路南国路立交工程为背景，通过对各开挖工况的模拟计算，阐述隧道基坑支护变形与实际开挖变形及沉降的关系，验证悬臂钻孔灌注排桩在特殊地质条件下的可行性，为推广应用提供理论与实践支持。%Under special geological conditions in the pearl river delta region , using cantilever bored perfusion pile in deep foundation pit in the analysis of dynamic characteristics are studied .This paper using the Bigui Road and Nanguoroad interchange project in Shunde district ,Foshan as the background ,through the simulation calculation of the working condition of excavation , this paper expounds the tunnel deformation of foundation pit supporting relationship with the actual excavation deformation and settlement ,cantilever bored perfusion pile is verified the feasibility of in the special geological conditions , provide the theory and practice support for the popularization and application .
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