长江科学院院报2017，Vol.34Issue(3)：130-133,138,5.DOI:10.11988/ckyyb.20150719
应力空间下基于区间搜索法的混凝土动态损伤临界点确定
Determining the Critical Point of Concrete's Dynamic DamageUsing Interval Search Method under Stress Space
吴彬 1胡伟华 2文沛军2
作者信息
- 1. 湖北工业职业技术学院 建筑工程系, 湖北 十堰 443000
- 2. 三峡地区地质灾害与生态环境湖北省协同创新中心 ,湖北 宜昌 443002
- 折叠
摘要
Abstract
Uniaxial compression test was carried out on standard cube specimens under different strain rates (10-5, 10-4, 10-3, 10-2/s), and damage variable was defined with concrete elastic modulus as the parameter.Damage evolution rules and variation of critical point of damage with strain rate were analyzed under stress space.Results show that with the increase of strain rate, 1) the stress level at critical point of damage rises, and the first and second critical points move to the positions of higher stress level;2) the interval length of first phase of damage increases and the interval length of third phase reduces, but the change of strain rate has little effect on the interval length of the second phase, which remains about 0.3.关键词
混凝土/动态损伤/临界点/区间搜索/应力空间Key words
concrete/dynamic damage/critical point/interval search/stress space分类
建筑与水利引用本文复制引用
吴彬,胡伟华,文沛军..应力空间下基于区间搜索法的混凝土动态损伤临界点确定[J].长江科学院院报,2017,34(3):130-133,138,5.
