新型防屈曲耗能支撑的设计、试验及其减震性能研究  

Design,testing and seismic mitigation performance research of a new type of buckling-restrained braces

作　　者：宁响亮[1] 刘军[1] 张颖[2] 李文斌[1] 许明杰[1] 胡宇新[1] 

机构地区：[1]株洲时代新材料科技股份有限公司,湖南株洲412007 [2]广州大学减震控制与结构安全国家重点实验室培育基地,广东广州510405

出　　处：《地震工程与工程振动》2012年第1期49-53,共5页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金重大研究计划重点支持项目(90815027)

摘　　要：设计制作了一种新型全钢、装配式的防屈曲耗能支撑(BRB),给出了主要的理论计算公式,采用有限元方法对其工作过程和机理进行数值模拟并进行了足尺实验研究,最后,将这种装置安装到框架结构,基于非线性动力时程分析评估其减震性能。研究结果表明了简化计算和有限元分析在产品初步设计中的有效性;防屈曲耗能支撑明显减小了结构动力响应,提高了结构的抗震安全性。A new type of full steel assembled buckling-restrained brace（BRB） is proposed.Main theoretical formulas are given,while the working process and mechanism of BRB is simulated by employing the finite element analysis（FEA）,further more,the full-scale test is conducted to verify the results of simplified calculation method and FEA.Finally,the nonlinear dynamic time history analysis of buckling-restrained braced frames（BRBF） structure is simulated to assess the seismic mitigation performance of BRB.It showsd that the effectiveness of theoretical simplified calculation and FEA in initial design of BRB product and BRB is able to significantly mitigate the dynamic responses and improve the safety of structure subjected to earthquake.

关 键 词：防屈曲耗能支撑 有限元分析 足尺试验 非线性动力时程分析 减震性能 

分 类 号：TU311.3[建筑科学—结构工程] P315.92[天文地球—地震学]