建筑结构学报2012，Vol.33Issue(10)：15-21,7.
钢-混凝土混合结构振动台试验的弹塑性损伤分析
Elasto-plastic damage analysis of shaking table test results of steel-concrete composite structure
摘要
Abstract
Through the secondary development of LS-DYNA program, the uniaxial elasto-plastic damage constitutive models of steel and concrete were developed respectively. The mixed-hardening criterion was used and the Bauschinger effect was considered in the steel damage model. Two damage indices were defined in the concrete damage model so that both the unilateral effect and the confinement effect of concrete ean be accurately simulated. Combined with the explicit algorithm based fiber element model, the method of building integral structure model for numerical analysis was proposed. The precision of this method was validated by the shaking table test of a 1/4-sealed model of a 3-story steel- concrete composite structure. Then, the damage evolution process of the test structure model was reproduced using the proposed numerical analysis model. Furthermore, an inverse calculation method for obtaining the stress and damage evolution process at a local area of the structure from the strain data measured at the same location was developed. The results show that this inversion method fully uses the measured strain data to get the structural stress and damage evolution process, and can make more accurate estimate for the performance degeneration process of structures.关键词
钢-混凝土混合结构/振动台试验/损伤本构模型/应变反演/弹塑性损伤分析Key words
steel-concrete composite structure/shaking table test/damage material model/strain inversion/elasto- plastic damage analysis分类
建筑与水利引用本文复制引用
李忠献,吕杨,徐龙河,丁阳..钢-混凝土混合结构振动台试验的弹塑性损伤分析[J].建筑结构学报,2012,33(10):15-21,7.基金项目
国家自然科学基金重大研究计划项目 （）
国家自然科学基金面上项目 （）
天津市应用基础与前沿技术研究计划重点项目 （）
