摘要
针对地震多发区结构简单支撑普遍缺乏理论分析的问题,本文用增量动力分析方法,结合简化的结构倒塌易损性方程分析,以一栋3层2跨小柱设计钢筋混凝土结构为例,对采用简单支护的框架结构倒塌易损性开展定量分析。对比分析了小柱设计结构、支撑后小柱设计结构、标准设计的框架结构的易损性与地震抗倒塌能力。结果表明:简单的木构件外部斜支撑措施能在很大程度上提高结构在地震荷载作用下的抗倒塌能力,对结构防灾减灾具有重要意义。
Considering the lack of theoretical analyses of simple and crude support schemes for structures in seismic regions,in this study,the seismic collapse fragility of a simply supported frame structure is quantitatively analyzed,using the incremental dynamic analysis(IDA)and a simplified structural analysis.The test structure is a three-story two-bay small-column RC frame structure.The fragility and seismic collapse ability of the small-column-design structure before and after being supported are compared and analyzed,as well as the fragility and anti-seismic collapse ability of the regular design-frame structure.The results demonstrate that the simple external inclined support of timber components can greatly improve the anti-collapse capability of structures under seismic load,which is of significance to disaster prevention and mitigation.
作者
王国新
卢鹏洁
WANG Guoxin;LU Pengjie(State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China;Institute of Earthquake Engineering,School of Hydraulic Engineering,Faculty of Infrastructure Engineering,Dalian University of Technology,Dalian 116024,China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2018年第11期1793-1797,共5页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(51378092
51578113)
关键词
抗倒塌能力
抗震性能
增量动力分析
倒塌易损性
简单外部斜支
混凝土框架结构
多条纹分析
anti-collapse capability
seismic performance
incremental dynamic analysis
collapse fragility
simple external inclined support
RC frame
multi-stripe analysis
