(广州地铁设计研究院股份有限公司， 广州 510669)

［摘要］提出了一种能够适用于内支撑系统的装配式地铁车站施工方案，并对其支撑、腰梁及地下连续墙节点进行了静载足尺试验，对比了腰梁与连续墙之间采用钢板连接及接驳器连接两种不同连接方式下节点的整体力学性能。结果表明：采用两种不同连接方式的节点最终破坏方式较接近，首先均是支撑顶部的受力钢筋发生受拉屈服，随着悬臂端荷载增大，在正应力及剪应力的作用下支撑底部的混凝土达到双轴抗压强度，混凝土发生破坏，试件失效；钢板连接节点的水平钢板能够较好地协调不同位置处钢筋的应力并且提供更高的承载力和更好的延性。 

［关键词］装配式地铁车站；节点力学性能；钢板连接；接驳器连接；静载足尺试验 

中图分类号：TU398-7 文献标识码：A文章编号：1002-848X(2021)24-0130-06

Experimental study on mechanical performance of joints of strut-waist beam-diaphragm wall joint connected by steel plate and mechanical coupler

MAI  Jia’er,  LU  Xiaozhi,  HE  Guanhong,  PEI  Xingkai 

(Guangzhou Metro Design & Research Institute Co., Ltd., Guangzhou 510669， China) 

Abstract: A new prefabricated subway station construction method that can be applied to the internal support system was proposed. A static full-scale test on the strut-waist beam-diaphragm wall joints were carried out. The overall mechanical properties of the joints under the two different connection methods of the steel plate connection and the mechanical coupler connection used between the waist beam and the continuous wall were compared. The results show that the failure modes of the joints under the two connection modes are similar. The failure starts from the longitudinal reinforcement at the top of the support yielding, and then during the load increasing, the concrete at the bottom achieves biaxial compressive strength under normal and shear stress. The concrete was crushes and the specimen failed. The horizontal steel plate at the steel plate connection points can better coordinate the stress of the steel bars at different locations and provide higher bearing capacity and better ductility. 

Keywords:prefabricated subway station； mechanical properties of the joint； steel plate connection；mechanical coupler connection； static full-scale experiment

 作者简介：麦家儿，学士，高级工程师，Email:570739788@qq.com； 通信作者：卢晓智，硕士，工程师，Email：843080713@qq.com。