竖向缝螺栓连接全装配式联肢复合墙抗震性能试验研究  

Test study on aseismic performance of fully assembled jointed composite wall with vertical seam bolt connection

作　　者：苗欣蔚 黄炜[3,4] 张家瑞 MIAO Xinwei;HUANG Wei;ZHANG Jiarui(School of Sciences,Xi’an University of Architecture and Technology,Xi’an 710055,China;Postdoctoral Research Station of Materials Science and Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;State Key Lab of Western Green Building,Xi’an University of Architecture and Technology,Xi’an 710055,China;School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]西安建筑科技大学理学院,西安710055 [2]西安建筑科技大学材料科学与工程博士后科研流动站,西安710055 [3]西安建筑科技大学西部绿色建筑国家重点实验室,西安710055 [4]西安建筑科技大学土木工程学院,西安710055

出　　处：《振动与冲击》2023年第19期153-161,179,共10页Journal of Vibration and Shock

基　　金：国家自然科学基金(51978566);国家自然科学基金青年项目(52308203);陕西省教育厅科研计划项目(22JK0440);西部绿色建筑国家重点实验室自主研究课题基金资助(LSZZ202222);陕西省杰出青年科学基金项目(2018JC-025)。

摘　　要：课题组前期提出一种竖向缝采用螺栓连接的全装配式联肢复合墙,为进一步明确此类连接方式对墙体抗震性能的影响规律,以连接钢板厚度为变参设计了3榀联肢复合墙试件(PCW-B),通过拟静力试验对比研究各试件的破坏模式、裂缝发展、抗震性能,以及竖向缝在受力过程中的变形规律。试验结果表明:竖缝连接钢板厚度对试件破坏形态无明显影响;提升竖缝板厚可显著增强试件的初始刚度、承载力,但会降低试件延性;当板厚超过6 mm可显著提升试件耗能性能;分析并提出竖缝受剪承载力主要取决于连接件的抗剪和界面摩擦力抗剪两项,其中连接件抗剪贡献因素包括:连接钢板强度、高强螺栓和预埋件处箍筋作用力,并基于此提出竖向接缝受剪承载力计算公式。此公式亦可为其它墙体结构提供理论参考。Here,a fully assembled jointed composite wall with vertical seam bolt connection was proposed.In order to further clarify effects of this type connection mode on aseismic performance of the wall,3 pieces composite walls bolted(PCW-B)specimens were designed taking connecting steel plate thickness as a variable parameter.Through quasi-static tests,various specimens’failure mode,crack development,aseismic performance and deformation law of vertical joints during stress process were studied.The test results showed that the thickness of steel plate connecting vertical seam has no obvious effect on failure mode of specimen;increasing thickness of vertical seam steel plate can significantly enhance initial stiffness and load-bearing capacity of specimen,but it can reduce the ductility of specimen;when the plate thickness exceeds 6mm,energy consumption performance of specimen can be significantly improved;the shear-bearing capacity of vertical joints mainly depends on shear resistance of connectors and interface friction shear resistance;shear resistance contribution factors of connectors include strength of connecting steel plate,high-strength bolts and stirrup force at embedded parts;based on these factors,a formula for calculating shear-bearing capacity of vertical joints is proposed,this formula can also provide a theoretical reference for other wall structures.

关 键 词：装配式复合墙 螺栓连接 抗震性能 竖向缝 竖缝承载力 

分 类 号：TU375[建筑科学—结构工程]