高强螺栓锥孔灌浆连接的预制天沟抗剪性能试验研究  

Experimental study on shear performance of precast gutter connected by high⁃strength bolt with cone hole grouting

作　　者：张微敬[1] 单辉 韩兴运 ZHANG Weijing;SHAN Hui;HAN Xingyun(Faculty of Architecture,Civil and Transportation Engineering,Beijing University of Technology,Beijing 100124,China;Inner Mongolia Mengxi Building Engineering Construction Co.,Ltd.,Hohhot 016000,China)

机构地区：[1]北京工业大学城市建设学部,北京100124 [2]内蒙古蒙西筑工科建有限公司,呼和浩特016000

出　　处：《建筑结构》2024年第16期132-137,共6页Building Structure

基　　金：国家自然科学基金面上项目(52078012)。

摘　　要：针对装配式混凝土建筑工程中多采用现浇天沟导致安装工序复杂的问题,为了探讨预制天沟替代现浇天沟的可行性,提出一种由预留锥形灌浆孔、高强螺栓、螺母、紧固件和高强灌浆料构成的预制构件连接方式,即“高强螺栓锥孔灌浆连接方式”,并对采用该种连接的简化天沟试件进行竖向力加载试验,研究预制天沟与预制混凝土剪力墙结合面的抗剪性能。结果表明:高强螺栓锥孔灌浆连接的预制天沟性能可靠,剪力作用下,试件未发生脆性破坏,螺栓未断裂;天沟等非结构预制构件,可以采用该种连接方式与预制结构构件连接;提出了该种构造下单个螺栓连接件的抗剪承载力计算公式,可为工程应用提供参考。To solve the problem of complex installation process caused by cast⁃in⁃place gutter in prefabricated concrete construction projects,in order to explore the feasibility of replacing cast⁃in⁃place gutter with precast gutter,a connection method of precast components consisting of reserved conical grouting holes,high⁃strength bolts,nuts,fasteners and high⁃strength grouting materials was proposed,namely,"high⁃strength bolt with cone hole grouting connection method".A simplified gutter specimen with this connection way was tested under vertical load to study the shear performance of the joint surface of precast gutter and precast concrete shear wall.The results show that the precast gutter connected by high⁃strength bolt with cone hole grouting has reliable connection performance,and no brittle failure and bolt fracture occur under shear load.Gutters and other non structural prefabricated members can be connected with prefabricated structural members by this connection method.The formula for calculating the shear capacity of a single bolt connector was proposed,which can provide reference for engineering application.

关 键 词：预制天沟 高强螺栓 灌浆连接 抗剪性能 抗剪承载力 

分 类 号：TU398.7[建筑科学—结构工程]