L形边框单排配筋保温模块矮剪力墙抗震性能研究  

Study on seismic performance of low-rise shear wall with thermal insulation blocks of single-row steel reinforcement and L-shaped frame

作　　者：周中一[1] 曹万林[2] 张勇波 

机构地区：[1]中国地震局工程力学研究所,地震工程与工程震动重点实验室,黑龙江哈尔滨150080 [2]北京工业大学,北京100124 [3]中国中元国际工程有限公司,北京100089

出　　处：《土木工程学报》2016年第12期35-44,共10页China Civil Engineering Journal

基　　金：国家自然科学基金(51308011);北京市自然科学基金(8144040)

摘　　要：进行4个足尺再生混凝土矮剪力墙试件的低周反复荷载试验,包括1个无EPS(模塑聚苯乙烯)保温模块剪力墙试件,3个带EPS保温模块剪力墙试件。对比分析各试件的承载力、延性、刚度、耗能和损伤演化规律;研究了保温模块及砂浆面层、再生混凝土强度、墙体分布钢筋配筋率对L形边框单排配筋矮剪力墙抗震性能的影响。研究表明:提高混凝土强度和分布钢筋配筋率可一定程度提高墙体的承载力和弹塑性变形能力;与无保温模块剪力墙试件相比,L形边框保温模块单排配筋矮剪力墙具有良好的抗震性能。Four full-scale L-shaped recycled concrete low-rise shear wall specimens were tested under low-cycle repeated loading to study the influences of thermal insulation blocks of expandable polystyrene （ EPS）, recycled concrete strength and reinforcement ratio. The four specimens, among which three were prepared with thermal insulation blocks of EPS and one was prepared without EPS blocks, were made of recycled concrete. Seismic performance including load-bearing capacity, stiffness, ductility, energy dissipation capacity and damage evolution law of those specimens were investigated and compared. Results show that load-bearing capacity and elastic-plastic deformation capacity of the shear walls can be improved significantly by increasing concrete strength and reinforcement ratio. The low-rise shear walls with thermal insulation blocks of EPS have better seismic performance compared to the wall without thermal insulation blocks.

关 键 词：L形边框 单排配筋 保温模块 矮剪力墙 抗震性能 

分 类 号：TU311.2[建筑科学—结构工程]