小跨高比连梁混合暗支撑高阻尼混凝土联肢剪力墙试验研究  

Experimental study on seismic performance of high damping concrete coupled shear wall with mixed concealed bracings and coupling beams with small span-depth ratios

作　　者：汪梦甫[1] 宋兴禹[1] 肖雨桐[1] 

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《地震工程与工程振动》2013年第3期125-132,共8页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(50978091;51278181);教育部博士点基金项目(20120161110022)

摘　　要：混合暗支撑高阻尼混凝土联肢剪力墙是一种新型延性双肢剪力墙,它将暗支撑引入双肢墙的两个墙肢,将内置带剪力钉钢板连梁作为剪力墙洞口连梁,墙身由高阻尼混凝土浇筑而成。本文对这种新型联肢剪力墙结构进行了低周反复加载实验与数值模拟,较系统地分析了该新型剪力墙结构的承载力、延性、耗能、破坏机制、破坏特征以及刚度衰减过程等性能。结果表明:与现有暗支撑混凝土联肢剪力墙相比,混合暗支撑高阻尼混凝土联肢剪力墙开裂强度、极限承载力、耗能能力及变形能力均有一定程度的提高,显示了良好的抗震性能;当剪力墙连梁跨高比越小,混合暗支撑高阻尼混凝土剪力墙的抗震性能越好。High damping concrete coupled shear wall with mixed concealed bracings is a new type of energy dissipation shear wall.This shear wall consists of three parts： shear walls with concealed bracings,coupling beams with concealed steel plate with shear stud,and cast-in-situ high damping concrete wall limb.In this paper,experimental study and numerical simulation of seismic performance of the proposed shear wall are carried out,and also the bearing capacity,ductility,energy dissipation,failure mechanism,failure characteristics and stiffness attenuation performance of the proposed shear wall are analyzed systematically.It is shown that,compared with the existing concrete coupled shear wall with concealed bracings,the cracking load,the ultimate bearing capacity,the energy dissipation capacity and the deformation capacity of the new type of coupled shear wall have been improved to a certain extent,and the effectiveness of the innovative coupled shear wall is increased with the reduction of span depth ratios of coupling beams.

关 键 词：高阻尼混凝土 联肢剪力墙 暗支撑 抗震性能 

分 类 号：TU375[建筑科学—结构工程] P315.92[天文地球—地震学]