预制混凝土夹心保温墙板连接件抗扭性能试验  

Experimental Study on Torsional Performance of Shear Connectors in Precast Concrete Sandwich Panel

作　　者：孟宪宏[1] 宋正泉 费小爽 陈建华 MENG Xianhong;SONG Zhengquan;FEI Xiaoshuang;CHEN Jianhua(School of Civil Engineering,Shenyang Jianzhu University,Shenyang,China,110168;China Metallurgical Construction Research Institute Co.Ltd.,Beijing,China,100088)

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]中冶建筑研究总院有限公司,北京100088

出　　处：《沈阳建筑大学学报（自然科学版）》2024年第6期994-1000,共7页Journal of Shenyang Jianzhu University：Natural Science

基　　金：“十四五”国家重点研发计划项目(2022YFC3801800)。

摘　　要：目的提高预制混凝土夹心保温墙板在制作、运输以及地震作用时遇到突发扭转工况下的抗扭性能。方法进行6组18个预制混凝土夹心保温墙板的扭转试验,分析连接件宽度、连接件片数、连接件间距对试件抗扭性能的影响。结果连接件宽度从160 mm增大至200 mm,抗扭承载力提高32%;双片连接件相比于单片连接件抗扭承载力提高51%;双片连接件间距为100 mm时的荷载略大于50 mm,提高14%。结论预制混凝土夹心保温墙板受扭破坏属于延性破坏;建议采用双片连接件,间距设为100 mm,以提高在不可靠情况下连接件的抗扭性能。To improve the torsion resistance of precast concrete sandwich panels under sudden torsion during manufacture,transportation and earthquake.The torsion tests of 6 groups of 18 precast concrete sandwich panels were carried out,and the effects of shear connector width,number and shear connector spacing on the torsion performance of the specimens were analyzed.As a result,when the width of the shear connector increases from 160 mm to 200 mm,the torsional bearing capacity of the shear connector increases by 32%;compared with the single-piece shear connector,the torsional bearing capacity of the double-piece shear connector increases by 51%;when the distance between the two-piece shear connector is 100 mm,the load is slightly larger than 50 mm,and the difference is less than 14%.The torsional failure of precast concrete sandwich panel belongs to ductile failure,and it is suggested to use two-piece shear connectors with 100 mm spacing to improve the torsional performance of the shear connectors under unreliable conditions.

关 键 词：预制混凝土夹心保温墙板 连接件 扭转性能 延性破坏 

分 类 号：TU227[建筑科学—建筑设计及理论]