带RC耗能器-限位斜撑框架抗震性能研究  

Seismic behavior of frame with RC dampers and lock-up braces

作　　者：闫维波[1] 李振宝[1] 马华[1] 周锡元[1] 

机构地区：[1]北京工业大学,北京100022

出　　处：《建筑结构》2008年第11期65-67,共3页Building Structure

基　　金：教育部留学回国人员科研启动基金资助项目(131(VE)00103);北京市优秀留学人员科技活动择优资助项目(143(VQ)0004)

摘　　要：通过两榀设置钢筋混凝土耗能器框架的伪静力试验,对比了设有限位斜撑及未设限位斜撑两种方案下结构的抗震性能,得到了两种情况下各构件的破坏过程、破坏形态和框架的滞回特性等。通过计算分析探讨了耗能器、限位斜撑分别对结构承载力和刚度的贡献。结果表明,耗能器屈服可以先期消耗部分地震能量,改善了框架整体的延性,而限位斜撑则大幅提高了结构后期的承载能力,充分体现了设置多道抗震防线的思想。Experiments of two frames with high ductile RC dampers subjected to low cyclic loading are conducted, and the seismic performance of frame with or without braces is compared. Damage process and form of the members and hysteresis behavior of the frames are obtained. The contribution of the dampers and braces to rigidity and loading capacity of the whole frame is calculated respectively. The results show that dampers yield prior to the columns and partly dissipate earthquake energy. The dampers improve the ductility of the frame to a certain extent and the lock-up braces enhance the post loading capacity of the frame. The results supply references to structure designers.

关 键 词：钢筋混凝土 框架 耗能器 限位斜撑 抗震性能 

分 类 号：TU352.11[建筑科学—结构工程] U442.55[建筑科学—桥梁与隧道工程]