7度区典型框架教学楼抗震加强措施效果对比  

Comparison among different strengthening methods for a typical RC classroom frame in zones with seismic intensity Ⅶ

作　　者：陆新征[1,2] 马玉虎[2] 陈浩宇[2] 周萌[2] 叶列平[2] 

机构地区：[1]上海建科院上海市工程结构新技术重点实验室,上海200032 [2]清华大学土木工程系,清华大学土木工程安全与耐久教育部重点实验室,北京100084

出　　处：《地震工程与工程振动》2011年第1期124-129,共6页Earthquake Engineering and Engineering Dynamics

基　　金：国家科技支撑计划项目(2009BAJ28B01);工程院重大咨询项目(2010-ZD-4);国家自然科学基金重点项目(90815025);上海市工程结构新技术重点实验室开放课题(2010-KF04)

摘　　要：由于汶川地震导致大量中小学校建筑倒塌,造成巨大伤亡,住建部、中国工程院和中国地震局分别提出了不同的校舍抗震设计加强要求,但这些加强措施的实际抗倒塌效果尚缺乏定量研究。本文采用纤维梁模型,并选择合适的箍筋约束混凝土本构,对汶川地震7度区典型钢筋混凝土框架结构教学楼进行了基于IDA的倒塌率分析,研究了不同抗震加强措施的防倒塌效果,进而给出了相应的设计建议。In the Wenchuan Earthquake,many school buildings collapsed,which caused serious casualties.So after the earthquake,Ministry of Housing and Urban-Rural Development,China Academic of Engineering,and China Earthquake Administrator proposed different strengthening methods to upgrade the seismic design of school buildings.However,the actual effects of these proposals have not been quantitatively evaluated.So in this work,fiber-beam element model with validated stirrups confined concrete constitutive law is used to build the nonlinear finite element model of a typical reinforced concrete（RC） classroom frame in zones with seismic intensity Ⅶ during the Wenchuan Earthquake.The effects of different strengthening methods on collapse-resistance are studied with collapse-fragility analysis that is based on the incremental dynamic analysis（IDA）.Further design suggestions are then proposed.

关 键 词：汶川地震 RC框架结构 倒塌率 防倒塌对策 抗震措施 

分 类 号：TU352[建筑科学—结构工程]