复合消能支撑的抗震性能试验研究  

Experimental study on seismic behavior of viscoelastic buckling restrained braces

作　　者：周颖[1] 胡擎 吴日利 ZHOU Ying;HU Qing;WU Rili(State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《中南大学学报（自然科学版）》2018年第7期1726-1733,共8页Journal of Central South University:Science and Technology

基　　金：国家重点基础研究发展规划(973计划)项目(2016YFC0701101);国家自然科学基金资助项目(51678449)~~

摘　　要：为克服传统防屈曲支撑在结构处于小震及微振情况下不耗能的问题,提出一种基于防屈曲支撑及黏弹性阻尼器并联工作原理的复合消能支撑,并通过加载频率为0.3 Hz的高速往复加载试验,对该种新型复合消能支撑及传统防屈曲支撑进行抗震性能研究。研究结果表明:复合消能支撑加载过程均未出现失稳现象,滞回曲线稳定饱满,拉压特性对称,并且其所具有的全阶段耗能、多重耗能、安全保障体系的优点得到了验证。Energy produced by frequent earthquake and micro vibration may not be dissipated by traditional buckling restrained braces(BRBs).To solve this problem of BRBs,a type of viscoelastic buckling restrained brace(VE-BRB)based on parallel connection working principle of the BRB and viscoelastic dampers(VEDs)was presented.High speed cyclic loading tests were conducted to study the different seismic behaviours of the VE-BRB with new construction details and the BRB with traditional construction details.The results show that the VE-BRB can yield without buckle.Its hysteresis curves are full,stable and the characteristics of compression and tension are consistent.The VE-BRB can dissipate energy in all stages of steel core,and have multiple energy dissipation and security assurance systems.Such advantages are verified by the experiment.

关 键 词：防屈曲支撑 黏弹性阻尼器 抗震性能 高速往复加载试验 复合耗能器 

分 类 号：TU318.1[建筑科学—结构工程] TU391