成都地铁2号线将军衙门站深基坑围护结构设计

摘要

根据成都地铁2号线将军衙门站深基坑围护结构的特征,选择了人工挖孔桩加钢支撵的基坑支护方案,对支撑构件的强度和基坑支护体系的整体稳定性进行了检算,施工实践证明,备支护结构的位移、变形、支撑轴力、周边地面沉降等实测数据都在规范要求之内.%According to the characteristics of the deep foundation pit enclosure structure of the General Yamen station on the second line of Chengdu subway, the author selects the foundation pit supporting scheme of artificial digging pile combined with steel support, calculates the strength of supporting component and the integrity stability of foundation pit Supporting system. Construction practice proven that all support-ing structures' displacement, deformation, supporting axial force and settlement of surrounding ground is in code requirements.