摘要
为研究采用穿芯高强螺栓-端板节点的方钢管混凝土柱-钢梁平面框架的抗震性能,制作了3榀方钢管混凝土框架试件,通过低周反复荷载试验,研究了框架的抗震性能,分析了轴压比、梁柱线刚度比对框架抗震性能的影响。在考虑几何、材料及接触非线性的基础上,采用有限元软件ABAQUS 6.10对试验框架进行了低周反复荷载作用下的精细化数值模拟。与试验结果的比较表明,数值分析结果与试验结果吻合较好,具有较好的精度,可用于方钢管混凝土框架的分析。基于数值分析结果,剖析了框架梁柱连接节点、柱脚等关键受力部位的应力发展过程,明确了框架的受力机理和破坏机制。
To research the seismic behavior of concrete filled square steel tube （CFT） columns and steel beam pla- nar frame with through boh-endplate beam-column connection, a total of 3 pseudo-static experiments have been con- ducted for three planar experimental specimens. The influence of axial load ratio and linear stiffness ratio of steel beam＇ s to column＇ s on the frame seismic behavior are investigated. The nonlinear finite element analysis involving geometric, material and contact nonlinearities is made using the ABAQUS finite element package. The results of the nonlinear analysis for the frame agree well with the experimental ones. Based on the results of the nonlinear analy- sis, the stress developing progress of beam-column joints and column bases is investigated. The load-transferring mechanism and failure mechanism are determined.
出处
《地震工程与工程振动》
CSCD
北大核心
2013年第4期126-133,共8页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金资助项目(51108369
51208385)
教育部博士点新教师基金项目(20116120120008)
陕西省教育厅专项基金项目(11JK0942)
陕西省青年科技新星项目(2013KJXX-54)
关键词
方钢管混凝土框架
穿芯高强螺栓-端板梁柱节点
非线性有限元分析
抗震性能
concrete filled square steel tubular frame
through bolt-endplate beam-column joint
nonlinear finite ele-ment analysis
seismic behavior
