圆钢管型钢再生混凝土短柱轴压性能有限元分析  

Finite Element Analysis on Axial Bearing Properties of Circular Steel Tubular Reinforced Recycled Concrete Short Columns

作　　者：陈鹏 张兆强[1] 撒燕茹 马腾 李林芮 

机构地区：[1]西南科技大学土木工程与建筑学院,绵阳621010

出　　处：《混凝土与水泥制品》2018年第11期47-53,共7页China Concrete and Cement Products

基　　金：国家自然基金资助项目(51308479);四川省教育厅资助科研项目(18CZ0012);绵阳市科技攻关项目(15S-02-3)

摘　　要：在5个圆钢管型钢再生混凝土组合短柱试验的基础上,利用有限元软件ABAQUS建立了圆钢管型钢再生混凝土短柱的静力计算模型。通过选取合理的材料本构,计算得出构件的荷载-位移曲线、割线刚度、承载力、延性系数、耗能、损伤,并与试验结果进行了对比,结果表明两者吻合较好。在对比验证的基础上进行有限元模型的应力、荷载分配曲线以及参数分析,研究型钢配钢率、核心再生混凝土强度对圆钢管型钢再生混凝土短柱承载力的影响。模拟结果表明,构件承载力随着型钢配钢率、核心再生混凝土强度的提高而提高。表明该组合结构具有较好的承载性能。Based on the experiment of five short columns of reclaimed concrete filled circular steel tubular foundations, the static calculation model of the rectilinear short columns of circular steel tubular reclaimed concrete is established by the finite element software ABAQUS. By selecting the reasonable material constitutive model, the load-displacement curves, secant stiffness, bearing capacity, ductility coefficient, energy dissipation and damage of the components are calculated and compared with the experimental results. The results show that the two agree well with each other. Based on the comparison and verification, the stress analysis, load distribution curve analysis and parameter analysis of the finite element model were carried out to study the influence of the steel ratio of the steel and the strength of the core recycled concrete on the bearing capacity of short steel tubular reclaimed concrete columns. The simulation results show that the bearing capacity of the component increases with the increase of the steel distribution ratio and the strength of the core recycled concrete. It shows that the composite structure has better bearing capacity.

关 键 词：参数分析 应力分析 承载力 型钢再生混凝土 有限元 

分 类 号：TU528[建筑科学—建筑技术科学]