某框架结构采用软钢阻尼器的减震效果分析  

Seismic Analysis of a Frame Structure with Metallic Dampers

作　　者：赖伟强[1] 施卫星[1] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092

出　　处：《结构工程师》2013年第4期82-88,共7页Structural Engineers

摘　　要：简要对比校安工程中的传统加固方法和新型耗能减震技术,指出位移型软钢阻尼器的使用情况、使用优点、耗能原理及其力学模型。结合某学校建筑的框架结构,利用三维空间有限元软件ETABS软件,对设置软钢阻尼器前后的框架结构,进行多遇地震下的反应谱分析和时程分析,以及罕遇地震下的时程分析,从层间位移角、顶部绝对位移和层间剪力三个性能指标分析软钢阻尼器的减震加固效果,并进行了简要分析。结果表明,软钢阻尼器耗能减震特性较好,能够明显降低结构的地震响应,认为软钢阻尼器的使用能够很好达到结构减震加固的目的。The traditional seismic methods and new energy-dissipation methods for structural strengthening were briefly compared in this article. The advantages and the principle of energy-dissipation and mechanical model of metallic dampers were introduced. ARC frame structure modeled by using the Etabs software for strengthening designs with and without metallic dampers. Response-spectrum analyses under minor earth- quakes and time-history analyses under minor and major earthquakes were implemented. The energy-dissipa- tion and reinforcement effects were evaluated by three indexes： story drift, top absolute displacement, and sto- ry shear force. Comparison results show that the energy-dissipation and reinforcement effect of metallic damp- ers are acceptable and the structural seismic responses can be reduced greatly.

关 键 词：软钢阻尼器 框架结构 减震 层间位移角 

分 类 号：TU352.1[建筑科学—结构工程]