配置耗能梁的复合高强钢框架抗震性能试验研究  

Experimental study on seismic performance of high strength moment resisting frames with energy dissipation beams

作　　者：陈以一[1] 柯珂[1] 贺修樟 刘志瑞[2] 

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 [2]宝钢钢构有限公司,上海201900

出　　处：《建筑结构学报》2015年第11期1-9,共9页Journal of Building Structures

基　　金：国家自然科学基金重点项目(51038008);科技部国家重点实验室基础研究资助项目(SLDRCE14-A-03)

摘　　要：提出了一种由高强钢主框架与耗能跨用普通碳素钢耗能梁组成的复合高强钢框架结构,以实现地震作用下损伤分步发展、震后残余变形可控的目标。结合试验和分析研究了其抗震性能。对所提结构的设计概念和非线性特征进行了阐释,并基于结构设计概念设计并完成了大比例的空间钢框架往复加载试验。此外,还设计了不同参数配置的算例结构,进行了静力推覆分析和非线性动力分析,并提出了结构设计原则。研究结果表明,配置耗能梁的复合高强钢框架结构具有屈服时序可控、耗能模式演化、滞回特征转变以及小残余位移等优良特征,而数值分析结果也进一步验证了结构的优良抗震性能。该结构形式可为高强钢构件在抗震结构中的应用提供参考。The concept of high strength moment resisting frames with energy dissipation beams of carbon mild steel is proposed to realize the goal of gradual development of damages and controllable residual deformation,the seismic behavior of the proposed system was investigated by experimental research and analysis. The design concept and the load bearing behavior of the system were clarified,and then a large scale hysteretic experiment considering a spatial steel moment resisting frame was designed and performed. Prototype structures with various design parameters were designed,and the performance was evaluated by pushover analysis and nonlinear dynamic analysis. The design criterion was also proposed. Results indicate that the proposed system shows noteworthy features including the controllable yielding sequence,the development of energy dissipation mode,the transformation of hysteretic behavior and small residual story drift. The satisfactory performance of the proposed system is verified by numerical analysis.The proposed system can provide reference for the application of high strength steel components in seismic resistant structures.

关 键 词：高强度钢 抗弯钢框架 拟静力试验 滞回性能 设计原则 

分 类 号：TU392.1[建筑科学—结构工程] TU317.1