新型装配式悬臂混凝土挡土墙承载性能试验  

Experimental Investigation on Bearing Capacity of Novel Precast Cantilever Concrete Retaining Wall

作　　者：刘曙光[1] 方琦 钟桂辉[1] 王军 LIU Shuguang;FANG Qi;ZHONG Guihui;WANG Jun(College of Civil Engineering,Tongji University,Shanghai 200092,China;Shanghai Water Engineering Design and Research Institute Co.,Ltd,Shanghai 200062,China;Engineering Research Center on Flood Control and Disaster Reduction of Shanghai Water Authority,Shanghai 200602,China)

机构地区：[1]同济大学土木工程学院,上海200092 [2]上海市水利工程设计研究院有限公司,上海200062 [3]上海市水务局防汛减灾工程技术研究中心,上海200062

出　　处：《同济大学学报（自然科学版）》2020年第7期937-944,952,共9页Journal of Tongji University:Natural Science

基　　金：国家重点研发计划(2018YFD1100401)。

摘　　要：为了探究叠合型挡土墙的合理性和叠合面的有效连接方式,提出了3种新型装配式悬臂混凝土挡土墙(键槽叠合型、桁架筋叠合型和螺旋筋叠合型),并针对3种新型挡土墙和两组对照挡土墙进行了静力加载试验。结果表明,3种新型挡土墙较现浇挡土墙的承载性能劣化程度有限(15%以内),叠合型挡土墙是装配式挡土墙的有效形式,具有良好的适用性与可行性。其中桁架筋叠合型的叠合面连接可靠,抗裂性能好,整体性强,具有更佳的承载性能,故桁架筋是提高叠合面连接性能的有效方式。To investigate the rationality and the effective connection mode of the superimposed surface of the superimposed type retaining wall,three types of new precast cantilever concrete retaining wall(the keyway superimposed type retaining wall,the truss bar superimposed type retaining wall and the spiral bar superimposed type retaining wall)were proposed.Static loading tests were carried out for three kinds of new precast retaining walls and two groups of control retaining walls.The results show that the deterioration degree of bearing capacity of the three new retaining walls is limited(within 15%)compared with the cast-in-place retaining wall.The superimposed type retaining wall is an effective mode of precast retaining wall,which has good applicability and feasibility.Among three kinds of the precast retaining wall,the truss bar superimposed type retaining wall has a reliable superimposed surface,strong crack resistance,good integrity,and better bearing capacity.Therefore,the truss bar is an effective way to improve the connection performance of the superimposed surface.

关 键 词：装配式悬臂挡土墙 叠合型 叠合面连接方式 承载性能 静力加载试验 

分 类 号：TV334[水利工程—水工结构工程]