不同距厚比下装配式钢-混凝土组合管剪力墙抗震性能试验研究  

EXPERIMENTAL RESEARCH ON SEISMIC BEHAVIORS OF PREFABRICATED SRCT SHEAR WALLS WITH DIFFERENT DISTANCE TO THICKNESS RATIOS

作　　者：王怡晓 庞瑞[1] 丁书苏 徐铸 王璐 雷红兵 WANG Yixiao;PANG Rui;DING Shusu;XU Zhu;WANG Lu;LEI Hongbing(College of Civil Engineering Architecture,Henan University of Technology,Zhengzhou 450001,China;Zhongjian Zhongyuan Architectural Design Institute Co.,Ltd.,Zhengzhou 450003,China)

机构地区：[1]河南工业大学土木建筑学院,郑州450001 [2]中建中原建筑设计院有限公司,郑州450003

出　　处：《工业建筑》2020年第8期145-153,127,共10页Industrial Construction

基　　金：国家自然科学基金项目(51208181,51778214);中原青年拔尖人才项目(ZYQR201912170);河南省属高校基本科研业务专项基金项目(2017RCJH04)。

摘　　要：为研究不同距厚比下装配式钢-混凝土组合管(SRCT)剪力墙结构抗震性能,对3片装配式SRCT剪力墙试件进行了足尺拟静力试验,对SRCT剪力墙的开裂模式、破坏形态、滞回曲线、位移延性、刚度退化和耗能能力等进行了较为系统的研究。SRCT剪力墙加载过程中混凝土与钢板协同受力良好,各部分材料受力功能明确,表现出良好的整体受力性能;SRCT剪力墙具有较高的承载力、刚度,可满足大震不倒的抗震设防目标;试件滞回曲线饱满,位移延性系数约为3,具有较好的塑性变形性能和耗能能力;距厚比对试件承载力和耗能影响不大,随着距厚比的减小,刚度退化较快,延性略有降低;随着距厚比减小,花纹钢板不易屈曲,破坏形态由U型钢被拉断带动花纹钢板屈服撕裂转变为花纹钢板与U型钢及法兰间焊缝破坏,预制构件在设计和制作时要保证薄钢板焊缝的承载力和焊接质量,避免焊接破坏的发生;同时也可以采用螺栓连接等其他连接方式。In order to study the seismic behavior of prefabricated SRC composite tube(SRCT)shear wall structures,a full-scale model quasi-static test of three prefabricated SRCT shear wall specimens was conducted.The performance of the specimens was evaluated in terms of cracking and failure mode,hysteretic curves,displacement ductility,stiffness degradation and energy dissipation capacity,et al.The results revealed that during the loading process,the concrete and the steel plate cooperated well,and the material function of each part was clear,showing a good overall load performance.SRCT shear wall had high bearing capacity and stiffness,which could meet the aseismatic fortification target of“no collapse under severe earthqnake”.The hysteresis curve of the specimen was full,and the displacement ductility coefficient was about 3,showing a good plastic deformation performance and energy dissipation capacity.The distance to thickness ratio had little effect on the bearing capacity and energy dissipation capacity.With the decrease of distance to thickness ratio,the stiffness degraded faster and the ductility decreased slightly.With the decrease of distance to thickness ratio,the tear plate was not easy to buckle,and the internal failure modes changed from local buckling and fracture of U-shaped steel and steel plates to fracture of welds.Reliable measures should be taken to improve the bearing capacity and welding quality of thin steel plate to avoid welding damage.Other connection methods such as bolt connection could also be used.

关 键 词：钢-混凝土组合管剪力墙 拟静力试验 抗震性能 破坏形态 距厚比 

分 类 号：TU352.11[建筑科学—结构工程] TU398.2