新型框架结构弹塑性地震反应的等效线性化方法研究  

Study on Equivalent Linearization Method for Elastoplastic Seismic Response of New Frame Structures

作　　者：邢朋涛[1] 梁兴文[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《震灾防御技术》2014年第4期790-800,共11页Technology for Earthquake Disaster Prevention

基　　金：国家自然科学基金资助项目(51278402;51078305);长江学者和创新团队发展计划资助(PCSIRT)

摘　　要：等效线性化方法是计算结构弹塑性地震反应的实用方法。通过对几种等效线性化方法的比较分析,提出了基于FEMA440(2005)计算等效刚度和等效阻尼比的等效线性化方法;分别采用静力弹塑性分析方法和等效线性化方法,分析了局部使用高性能纤维增强混凝土新型框架结构的弹塑性地震反应。结果表明,两种方法所得结构的地震反应均比较接近。因此,本文建议的等效线性化方法能够较好地预测新型框架结构的弹塑性地震反应。The equivalent linearization method is a practical method to calculate the elastoplastic seismic response of structures.In this paper,after several equivalent linear methods were compared and analyzed,the equivalent linearization method based on FEMA440 to calculate equivalent stiffness and equivalent damping ratio was proposed.The elastoplastic seismic response of new frame structures using high performance fiber reinforced concrete （HPFRC） in local region were analyzed by this equivalent linearization method and pushover analysis,respectively.The results showed that the seismic response of structures calculated by both methods were relatively similar,the equivalent linearization method can predict the new frame structure seismic response well.

关 键 词：高性能纤维增强混凝土 新型框架结构 弹塑性地震反应 等效线性化 

分 类 号：TU375.4[建筑科学—结构工程] TU311.3