钢支撑由于施工方便,架设、拆除快速,可以反复使用等成为内支撑优先考虑的支撑形式。介绍了天津市某地铁车站深基坑方案选择及其监测点布置和基坑开挖工况,对钢筋混凝土-钢支撑组合支撑体系轴力进行监测。通过分析支撑体系的受力变化和地下连续墙变形规律,证明其协同工作的优越性和合理性。 Due to the construction of steel support, erection, removal of fast, can be repeatedly used to become the preferred support within the support form. This paper introduces the scheme selection of deep foundation pits and the arrangement of monitoring points and excavation conditions of a deep foundation pit in a metro station in Tianjin, and measures the axial force of the composite support system of reinforced concrete and steel support. By analyzing the change of supporting force and the deformation of diaphragm wall, the superiority and rationality of its cooperation are proved.