带水平连接节点的装配式钢-混凝土组合管剪力墙抗震性能研究  

RESEARCH ON SEISMIC PERFORMANCES OF PREFABRICATED SRCT SHEAR WALL STRUCTURE WITH HORIZONTAL CONNECTIONS

作　　者：庞瑞[1] 王怡晓 徐铸 王璐 雷红兵 PANG Rui;WANG Yixiao;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》2021年第3期35-41,共7页Industrial Construction

基　　金：国家自然科学基金项目(51208181,51778214);中原千人计划支持项目(ZYQR201912170);河南省属高校基本科研业务专项基金项目(2017RCJH04)。

摘　　要：为研究带水平连接节点的装配式钢-混凝土组合管(SRCT)剪力墙抗震性能,对2个足尺SRCT剪力墙试件和1个足尺现浇钢筋混凝土(RC)剪力墙试件进行了低周往复荷载下的模型试验。结果表明:无论是在剪力墙中部还是底部设置连接的装配式SRCT剪力墙均具有较高的承载力、刚度、延性和耗能能力,水平连接节点安全可靠;带中部水平连接节点的试件承载力、刚度、耗能能力等性能与SRCT剪力墙试件基本一致,中部水平接缝对试件整体抗震性能影响较小;配置拉结筋的方钢管可以有效抑制钢管内混凝土的开裂和裂缝发展,使得墙肢根部的破坏程度远小于RC剪力墙,同时钢管内外混凝土可有效约束薄壁钢管的屈曲;SRCT剪力墙存在两种破坏形态,一种破坏形态能充分发挥钢材和混凝土的材料性能,是理想的破坏形态,另一种破坏形态具有脆性特征,应加以规避。In order to study the seismic performances of steel-concrete-composite-tube(SRCT)shear walls with horizontal connections,an experiment was conducted on two full-scaled models of SRCT shear walls and a cast-in-situ RC shear wall.The results revealed that the prefabricated SRCT shear walls with the horizontal connection whether in the middle or at the botlom of shear walls all had high bearing capacity,stiffness,ductility and energy dissipation capacity.It showed the reliability of the proposed horizontal connection.Mechanical performances such as bearing capacity,stiffness and energy dissipation capacity of SRCT the shear wall with the horizontal connection in the middle of the wall were basically the same as that of SRCT shear walls without horizontal connections,and the horizontal connection had little impact on the overall seismic performances of the shear wall.Square steel tubes with tie bars could effectively restrain the cracking and crack development of concrete in steel tubes,so that the damage degree of the bases for the wall limbs the SRCT shear walls was much lower than that of the RC shear wall.Meanwhile,the internal and external concrete effectively restrained the buckling of thin-walled steel tubes.SRCT shear walls had two types of failure modes,one kind of failure could effectively make full use of strength of the material and was ideal,the other had brittle failure characteristics and should be avoided.

关 键 词：钢-混凝土组合管剪力墙 水平连接节点 拟静力试验 抗震性能 破坏形态 

分 类 号：TU352.11[建筑科学—结构工程] TU398.2