期刊论文

中文

长沙理工大学学报(自然科学版)

1672-9331

2016

13

2

33-39

10.3969/j.issn.1672-9331.2016.02.007

国家自然科学基金资助项目（51178059）；

本校为第一机构

针对现有的钢筋混凝土柱地震损伤模型存在计算结果发散、损伤指标与破坏现象不完全符合等问题,在已有地震损伤模型和钢筋混凝土柱试验的基础上,提出了一种较为精细的基于刚度退化和考虑加载路径影响的滞回耗能的双参数损伤模型.以PEER数据库中Kunnath完成的钢筋混凝土柱试验为研究对象,分别计算几种常见模型及本研究建议模型的损伤指标值,并与试验现象进行了对比分析.研究结果表明,基于刚度退化和考虑加载路径影响的滞回耗能的双参数损伤模型计算的损伤指数有较好的收敛性,能较准确地评估不同加载条件下柱的损伤状态,能够考虑加载路径的影响及合理评价小位移幅值加载时的低周疲劳损伤.

In view of the problems that the calculation results are divergent, and the damage index and the failure phenomena are not completely consistent,existing in the seismic dam- age models of reinforced concrete columns, on the basis of existing seismic damage models and reinforced concrete column test,a more precise double-parameter damage model based on stiffness degradation and hysteretic energy dissipation in consideration of the influence of loading path is proposed.This paper puts reinforced concrete columns test of PEER database executed by Kunnath as the research object, the damage index o...