低层装配式混凝土墙板结构开洞墙体抗震性能试验研究  

Experimental Study on Seismic Behavior of Open Wall with Low-rise Fabricated Concrete Wall Panel Structure

作　　者：杨宝坤 王二成[1,2] 刘凯 郑贤贤 李冲 赵阳 YANG Bao-kun;WANG Er-cheng;LIU Kai;ZHENG Xian-xian;LI Chong;ZHAO Yang(College of Civil Engineering,Hebei University of Engineering,Handan 056038,China;Technology Innovation Center for Prefabricated Construction of Hebei,Hebei University of Engineering,Handan 056038,China)

机构地区：[1]河北工程大学土木工程学院,邯郸056038 [2]河北省装配式结构技术创新中心,邯郸056038

出　　处：《科学技术与工程》2020年第34期14213-14222,共10页Science Technology and Engineering

摘　　要：装配式混凝土墙板结构开洞墙体由预制混凝土墙板和现浇边缘构件组成,预制墙板采用水泥砂浆与基础坐浆连接,两侧预留与边缘构件连接的搭接钢筋,边缘构件没有钢筋穿过水平连接缝且上下层钢筋贯通,通过对3个具有相同尺寸的开洞墙体进行定轴压比低周反复荷载试验,对比研究了此种墙体的受力过程及破坏形态,对墙体的钢筋应变、滞回性能、承载力、延性性能、刚度退化及耗能能力进行了分析。结果表明:加载后期墙体底部与基础梁之间形成贯穿裂缝,但墙体并未有较大错动,而是在底部发生弯曲破坏,最终边缘构件下方混凝土破碎,钢筋外露;墙体裂纹分布及扩展规律与应变片数据相对应,承载力较高,延性满足使用要求,刚度退化较平稳快,具有一定耗能能力,符合低层建筑抗震要求。The open wall with prefabricated concrete wall panel structure is composed of precast concrete wall panels and cast-in-place edge members.The precast wall panels are connected by the foundation grout and cement mortar,the lapping steel bars connected to the edge members are reserved on both sides,and the edge members without steel bars pass through the horizontal connection joints and the upper and lower layer of steel bars are penetrated.The three-layered wall with the same size was subjected to the fixed axial compression ratio and the low-cycle loading experiment.The loading process and failure mode of the wall were compared.Factors including steel strain,hysteretic behavior,bearing capacity,ductility performance,stiffness degradation and energy dissipation capacity of the wall were analyzed.The results show that the transverse crack is formed between the bottom of the wall and the foundation beam at the end of loading,the wall does not have a large displacement,but the bending failure occurs at the bottom.The concrete under the edge member is broken and the steel bars are exposed.The crack distribution and propagation law of the wall correspond to the strain gauge data.Their advantages lie in high bearing capacity,the ductility meeting operating requirements,the smoother and faster stiffness degradation,and certain energy dissipation capacity,which meets the seismic requirements of low-rise buildings.

关 键 词：低层装配式 开洞坐浆墙体 抗震性能 试验研究 

分 类 号：TU375.2[建筑科学—结构工程]