摘要
为提出适合型钢混凝土(SRC)柱应用的损伤指数计算模型,基于SRC柱试件的低周反复加载试验结果,采用修正Park-Ang模型对课题组已完成的14个SRC柱试件进行了不同位移角幅值下的损伤指数计算对比分析。计算结果显示,修正Park-Ang模型在计算SRC柱损伤指数时离散程度较大,不能反映型钢的影响。基于试验结果,提出了SRC柱在不同性态水平下的损伤指数建议值和考虑配钢率影响的SRC柱双参数损伤指数计算模型。与试验结果的对比显示,该模型可以合理的反映不同参数SRC柱的损伤发展过程,可为SRC结构基于性态的震损评估提供参考。
Experimental research of steel reinforced concrete（SRC） columns under cyclic loading was carried out to propose damage model for SRC columns.Damage indices of 14 SRC columns under different story drift were calculated using the modified Park-Ang model.It is indicated that the calculation result of SRC columns is seriously discrete and the influence of steel cannot be considered.The damage index of SRC columns under different performance levels is suggested and a two-parameter damage model of SRC columns considering the influence of steel is proposed based on the experiment results.Comparison between the calculated damage indices using the proposed model and test results shows good agreement.This paper can be referenced for the performance based seismic assessment of SRC columns.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2010年第9期203-207,285,共6页
Journal of Wuhan University of Technology
基金
国家自然科学基金(50978107
50478120)
福建省自然科学基金(E0810021)
