长期荷载作用下圆端形钢管混凝土力学性能  

Mechanical properties of concrete-filled steel tubes with round ends under long-term load

作　　者：廖仁生 李永进 刘文华 张铮[3] LIAO Rensheng;LI Yongjin;LIU Wenhua;ZHANG Zheng(School of Engineering, Fujian Jiangxia University, Fuzhou 350108, China;College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China;Teaching Quality Management Office, Fujian University of Technology, Fuzhou 350118, China)

机构地区：[1]福建江夏学院工程学院,福建福州350108 [2]福建农林大学交通与土木工程学院,福建福州350002 [3]福建工程学院教学与质量管理办公室,福建福州350118

出　　处：《福建工程学院学报》2022年第1期48-52,共5页Journal of Fujian University of Technology

基　　金：福建江夏学院科研创新团队(19KTXZ02);福建江夏学院科研人才培育项目(JXZ2020012)。

摘　　要：采用有限元法,全过程分析了考虑长期荷载作用下时构件的应变-荷载曲线。基于有限元模型,分析了长期荷载作用下圆端形钢管混凝土柱的工作机理。结果表明:考虑长期荷载作用影响对圆端形钢管混凝土柱的内力分布、变形有较大影响,对承载力影响不大,且随着高宽比的增大,构件的峰值荷载增大,延性减小。The finite element method was used to analyze the whole process of the strain-load curve of the member considering the long-term load.Based on the finite element model,the working mechanism of the round-end concrete-filled steel tube column under long-term load was analyzed.Research results show that the effect of long-term load has a greater impact on the internal force distribution and deformation of the round-end concrete-filled steel tube column,but has little impact on the bearing capacity,and as the aspect ratio increases,the peak load of the member increases and the ductility decreases.

关 键 词：圆端形钢管混凝土 长期荷载 轴压 力学性能 

分 类 号：TU398[建筑科学—结构工程]