配置HRB500钢筋的框架结构非弹性地震反应分析.pdf

第33卷第2期
土木建筑与环境工程
Vo!.33No.2
年4月
Journal of Civil, Architectural & Environmental Engineering
Apr.2011
配置HRB500钢筋的框架结构非弹性地震反应分析
韦锋·3,刘刚,王晓锋,朱爱萍”,傅剑平
(1.华南理工大学土木与交通学院,广州510640;2.中国建筑科学研究院,北京100092;
3.重庆大学土木工程学院,重庆40045)
摘要:为实现建筑行业的可持续发展,中国土木建筑エ程界正在推广应用HRB500级高强钢筋,
但是,以IHRB500钢筋作为主要受力钢筋的混凝土结构的抗震性能研究还相对缺乏。该文按《混凝
土结构设计规范》最新修订訂稿设计了3个配置不同强度钢筋的8度0.3g区一级抗震等级的混凝土
框架结构,并完成了该3个结构在多波输入下的非弹性地震响应分析,对比了配置HRB500钢筋的
混凝土框架结构与配置HRB100和HRB35钢筋的相应框架的地震反应规律和抗震性能。分析
结果表明:在罕遇水准的地面运动输入下,配置HRB500钢筋的混凝土框架的最大位移反应与配置
其他两种钢筋的框架结构大致相当,其构件的塑性转角延性需求则小于配置其他两种钢筋的框架
结构;配置HRB500钢筋的一级抗震等级框架结构在强震下形成的是梁铰塑性耗能机构,最大弹塑
性层间位移角可满足设计规范规定的要求。
关键词:混凝土框架结构;HIRB500钢筋;抗震设计;非弹性地震反应;抗震性能
中图分类号:TU973.31;TU375文献标志码:A文章编号:1674-4764(2011)02-0012-06
Inelastic Seismic Response of Reinforced Concrete Frame
Structures Reinforced with HRB500 Steel Bars
WE/ Feng L/U Gang, WANG Xiao-feng", ZHU Ai-ping FU Jian-ping
(1. School of Civil Engineering and Transportation, South China University of Technology, Guanzhou 510640, P R China
2. China Academy of Building Research, Beijing 100013, P R China
3. Collage of Civil Engineering, Chongqing University, Chongqing 400045, P, R. China
Abstract: To achieve sustainable development of construction industry, the application of HRB500
reinforcement with high strength and high ductility in RC structures is being promoted in civil and
structural engineering in China. But few studies focus on seismic behaviors of RC structures reinforced with
HRB500 bars. In this analysis, three RC frame structures on the Zone of Fortification Intensity 8(0. 3g)in
China reinforced with HRB500, HRB400 and HRB335 bars respectively, are designed confirming to the
latest draft of the revising Code for the Design of Concrete Structures. Then inelastic seismic response
analyses of the three frames with multiple inputs of ground motions are conducted. The seismic response
rules and seismic performances of the RC frame reinforced with HRB500 bars are compared with those
frames reinforced with HRB400 and HRB335 bars. The analytical results indicate that under ground
motions in rare earthquake level, the maximum displacements of the frame reinforced with HRB500 bars
are roughly the same as those of the frames reinforced with 1RB400 and HRB335 bars, while the rotation
ductility demand of elements in the former structure is smaller than those of elements in the latter
收稿日期:201007-18
基金项目;“十ー五”国家863计划(2007AAO3Z550);“十ー五”国家科技支撑计划(2007BAE30BO5)
作者简介:韦锋(1971-),男,博士,副教授,主要从事结构工程抗震及设计理论研究,(E- mail)ctfwei(@scut.edu,cn。