汶川地震典型RC框架结构抗倒塌加固效果分析.pdf

文档介绍：第卷第期建筑科学与工程学报
28 2
年月
2011 6 Journal of Architecture and Civil Engineering June 2011
文章编号
:1673-2049(2011)02-0021-07
汶川地震典型 RC框架结构抗倒塌加固效果分析
陆新征1,2 马玉虎1,2 唐代远1,2 叶列平1,2 韩强3
, , , ,
清华大学土木工程系北京清华大学土木工程安全与耐久教育部重点实验室北京
(1. , 100084;2. , 100084;
北京工业大学城市与工程安全减灾教育部重点实验室北京
3. , 100124)
摘要:以汶川地震震中附近的一栋典型 RC框架结构为背景,分别采用普通支撑、防屈曲支撑(BRB)和
粘滞阻尼器支撑3种加固方案来提高其抗震能力,并采用基于动力增量分析(IDA)的地震倒塌易
损性分析方法,对各种加固方案的抗倒塌能力及其影响参数进行了分析。结果表明:以结构抗倒塌
能力为目标,粘滞阻尼器支撑加固方案的效果优于BRB加固方案,而 BRB方案的加固效果要优于
普通支撑加固方案;相同参数情况下,A 型支撑布置方案的加固效果优于 X 型支撑加固。
关键词:汶川地震;RC 框架结构;倒塌率;抗倒塌;动力增量分析
中图分类号文献标志码
:TU352 :A
Strengthening Effect Analysis of Seismic Collapse Resistance of
Typical RC Frame Structures in Wenchuan Earthquake
LU Xin-zheng1,2,MA Yu-hu1,2,TANG Dai-yuan1,2,YE Lie-ping1,2,HAN Qiang3
( of Civil Engineering,Tsinghua University,Beijing 100084,China; Laboratory of Civil
Engineering Safety and Durability of Ministry of Education,Tsinghua University,Beijing 100084,China;
Laboratory of Urban Security and Disaster Engineering of Ministry of Education,
Beijing University of Technology,Beijing 100124,China)
Abstract:Taking a typical reinforced concrete (RC)frame structure that was close to the
epicenter during the Wenchuan Earthquake as background,the seismic collapse resistance of the
frame was strengthened by attached substructures,includi