预制夹芯保温墙体棒状FRP连接件力学性能试验研究  

Experimental study on mechanical properties of rod-shaped FRP connectors for prefabricated sandwich insulation walls

作　　者：郝雨杭[1,3] 付素娟 匡田 郭佳伟 HAO Yuhang;FU Sujuan;KUANG Tian;GUO Jiawei(Hebei Jianyan Technology Co.Ltd.,Shijiazhuang 050227,China;Hebei Academy of Building Research Co.Ltd.,Shijiazhuang 050227,China;Hebei Green Building Industry Technology Research Institute,Shijiazhuang 050227,China;Hebei Prefabricated Housing Engineering Research Center(In Preparation),Shijiazhuang 050227,China;Hebei Institute of Architecture and Engineering,Zhangjiakou 075000,China)

机构地区：[1]河北建研科技有限公司,河北石家庄050227 [2]河北省建筑科学研究院有限公司,河北石家庄050227 [3]河北省绿色建筑产业技术研究院,河北石家庄050227 [4]河北省装配式住宅工程研究中心(筹),河北石家庄050227 [5]河北建筑工程学院,河北张家口075000

出　　处：《新型建筑材料》2022年第3期7-10,30,共5页New Building Materials

基　　金：河北省重点研发计划项目(20374507D);河北省建设科技研究指导性计划项目(2018-2001);住房和城乡建设部研究开发项目(2021-K-150)。

摘　　要：连接件作为预制夹芯保温墙体主要受力部件,墙体内部FRP连接件的受力性能直接影响墙体的使用安全。通过对FRP连接件试件进行抗拔和抗剪试验,研究FRP连接件的力学性能。结论表明:在抗拔试验中,当试件失去承载力时,破坏形式均为混凝土出现裂缝或劈裂,连接件未从混凝土中拔出。在抗剪试验中,试件均因连接件发生层间剪切破坏而失去承载力。只有当连接件直径达到20 mm时,才能符合AC320规范规定的位移与极限承载力要求。As the main stress-bearing component of the prefabricated sandwich insulation wall,the force-bearing performance of the FRP connector inside the wall directly affects the safety of the wall.This paper conducts pullout and shear tests on FRP connector specimens to study the mechanical properties of FRP connectors.The conclusions show that:In the pull-out test,when the test piece loses its bearing capacity,the failure form is that the concrete cracks or splits,and the connector is not pulled out of the concrete.In the shear test,the specimens all lost the bearing capacity due to the interlayer shear failure of the connectors.Only when the diameter of the connecting piece reaches 20 mm,can it meet the requirements of displacement and ultimate bearing capacity specified in the specification AC320.

关 键 词：FRP连接 预制夹芯保温墙体 抗拔性能 抗剪性能 

分 类 号：TU398.2[建筑科学—结构工程]