【摘要】 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。更多还原

【Abstract】 Steel support has advantages of convenience in construction,setting up and removing quickly and can be reused,so it is priority chosed as internal support.The scheme choice of deep foundation excavation at some railway station in Tianjin is put forward.The layout of monitoring points and excavation conditions are introduced.Axis forces of reinforced concrete-steel tube support are monitored.Deformation rules of diagram walls and forces change of support system are obtained,which proves the advantage and reasonable of combination structure.更多还原