防灾减灾工程学报2017，Vol.37Issue(3)：354-361,8.DOI:10.13409/j.cnki.jdpme.2017.03.004
基于刚度退化的钢筋混凝土结构抗震性能指标对比分析
Comparative Analysis of Seismic Performance Indices Based on Stiffness Degradation for Reinforced Concrete Structures
摘要
Abstract
Reinforced concrete structures are likely to suffer damage when subjected to earthquakes.In this paper,a new stiffness-based damage index proposed previously by some of authors was compared with Kunnath and Jenne index for their applicability in seismic damage evaluation.A fiber model for three-storey reinforced concrete frame structure designed according to the current seismic codes was established.Pushover analyses with three lateral load patterns and the dynamic time histories for typical ground motions of varying intensities were performed on the structure.According to the results of structural energy dissipation,the difference in the estimation of structural damage states between the two examined indicators was studied.Moreover,local storey damage extent of the reinforced concrete structure subjected to varying ground motion intensities was assessed by adopting the proposed damage index.The results show that the proposed damage index is not sensitive to the lateral load patterns for pushover analysis.As a result,the storey and the overall damage of the structure can be quantified by using the abovementioned damage index.And thus the weak storey can also be found.The proposed damage index demonstrates a rational way to predict the extent of damage to structures under an earthquake.关键词
钢筋混凝土结构/性能指标/刚度退化/静力弹塑性分析/动力时程分析Key words
reinforced concrete structure/seismic performance index/stiffness degradation/push-over analysis/time history dynamic analysis分类
建筑与水利引用本文复制引用
管民生,杜宏彪,崔杰..基于刚度退化的钢筋混凝土结构抗震性能指标对比分析[J].防灾减灾工程学报,2017,37(3):354-361,8.基金项目
深圳市科技研发资金项目(JCYJ20150324141711689 （）
JCYJ20130329142338934)、华南理工大学亚热带建筑科学国家重点实验室开放基金项目(2014KB27)、广东工业大学青年基金重点课题项目(13QNZD007)资助 （2014KB27）
