现场发泡夹心墙平面内变形性能研究  

STUDY ON THE IN-PLANE DEFORMATION BEHAVIOR OF FOAM-IN-PLACE CAVITY WALL

作　　者：张延年[1] 李恒[1] 刘明[1] 张洵[1] 李立东[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《工程力学》2011年第6期141-148,共8页Engineering Mechanics

基　　金："十一五"国家科技支撑计划课题(2007BA10011A-5);建设部研究开发项目(2008-k3-10)

摘　　要：为研究一种新型节能墙体——现场发泡夹心墙的平面内变形性能,制作了13片现场发泡夹心墙和1片实心墙,进行了平面内的抗震性能试验。得到了墙体滞回曲线、骨架曲线、内叶墙不同高度位移时程曲线、延性系数、能量耗散系数和刚度退化曲线等,分析了轴压比、拉接件的构造参数与布局、保温层厚度等参数变化对现场发泡夹心墙的破坏特征、破坏机制、稳定性能、延性性能、耗能能力、刚度退化等影响。研究结果表明构造柱、拉接件和钢筋混凝土梁挑耳有效改善了墙体变形能力和整体性能,夹心墙具有较好的变形性能。In order to study the in-plane deformation behavior of a new energy-saving wall,namely the foam-in-place cavity wall,13 patches of cavity walls and 1 patch of solid wall were built and tested.The dynamic hysteretic loop curves,the backbone curves and time history curves of displacement were obtained considering the variation of heights,ductility,energy dissipation and stiffness degradation.The effects of axial compression ratio,shape and layout of ties,and insulation layer thickness on structural seismic behaviors were investigated.The experimental results show that the deformation capacity and the overall performance of the cavity wall is improved efficiently with constructional columns,ties and reinforced concrete strip ears,and the cavity walls have good deformation and energy dissipation behaviors.

关 键 词：现场发泡夹心墙 抗震试验 平面内载荷 低周反复荷载 变形性能 构造措施 

分 类 号：TU362[建筑科学—结构工程]