装配式挡墙箱体集束连接力学性能试验研究

Experimental study on mechanical properties of cluster connection of prefabricated retaining wall box

为解决船闸工程现浇施工体系施工效率低、质量不可控等问题,提出将装配式结构应用于船闸挡墙工程,并在此基础上将集束搭接连接应用于装配式挡墙结构。为明确集束连接的力学性能,开展了集束连接局部构件的单向分级加载试验,观察试件破坏特征和裂缝发展规律。试验结果表明:试件破坏模式为小偏心受拉破坏,破坏位置集中在插筋端部较小范围内。研究结果可为船闸挡墙工程集束连接结构的破坏模式分析和受拉承载力计算提供理论支持。

To solve the problems of low construction efficiency and uncontrollable quality of the cast-in-situ construction system in ship lock engineering,the prefabricated structures are applied to retaining wall engineering,and the reinforcement cluster connection is applied to prefabricated retaining wall structures.To clarify the mechanical performance of the connection,this paper conducts unidirectional loading tests on the specimens of the connection to observe the failure characteristics and crack development rules.The test results show that the failure mode is small eccentric tension failure,and the failure location is concentrated at the end of the inserted bar.The research results can provide theoretical support for the failure mode analysis and tensile bearing capacity calculation of the cluster connection in ship lock retaining wall engineering.