摘要
为了分析不同参数对短柱轴压性能的影响,基于有限元软件ABAQUS建立了圆复合双钢管混凝土(concrete-filled double steel tubular,CFDST)短柱在轴压下的有限元模型.针对核心混凝土受到内外钢管同时约束的情况,采用了2种核心混凝土本构模型,同时将采用2种本构模型的模拟结果与前人的试验结果进行了比较,验证了模型的正确性,提出了适合夹层混凝土、核心混凝土和钢管的本构模型.在此基础上,通过ABAQUS拓宽了参数研究范围,对圆CFDST短柱在不同参数下进行了受力分析.
Based on the finite element software ABAQUS,a finite element model of concrete-filled double steel tubular(CFDST)columns under axial compression was established.Two constitutive models of core concrete were adopted for the case that core concrete is confined by both internal and external steel tubes.At the same time,the simulation results of the two constitutive models were compared with the experimental results of predecessors,which verifies the correctness of the model,and the constitutive models suitable for sandwich concrete,core concrete and steel tube were proposed.On this basis,ABAQUS broadens the scope of parameter study,and the force analysis of circular CFDST short columns under different parameters was carried out.
作者
慈俊昌
闫维明
贾洪
CI Junchang;YAN Weiming;JIA Hong(Collge of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100124,China;China Railway Urban Construction Group Co.,Ltd.,Changsha,410013,China)
出处
《北京工业大学学报》
CAS
CSCD
北大核心
2020年第8期918-928,共11页
Journal of Beijing University of Technology
基金
国家自然科学基金资助项目(51978021,51878017)
国家重点研发计划资助项目(2017YFC1500604,2017YFC1500603)。
关键词
圆复合双钢管混凝土柱
有限元分析
轴心受压
极限强度
短柱
混凝土约束
circular concrete-filled double steel tubular(CFDST)columns
finite element analysis
axial compression
ultimate strength
stub column
concrete confinement
