轴压比对矩形钢管混凝土框架受力性能影响的有限元分析
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
基于一榀单跨两层矩形钢管混凝土框架的抗震性能试验,利用通用有限元软件ABAQUS建立了框架的非线性有限元分析模型,模型中考虑了混凝土反复荷载下的刚度退化。通过与试验结果的对比分析,验证了该模型的正确性,可以用于矩形钢管混凝土框架的结构分析中。利用该模型对不同轴压比下框架的骨架曲线进行了对比,并对其受力性能进行了分析,结果表明:随着轴压比的增大,框架的延性和承载力随之降低。
Based on the model experiment on seismic behavior of a 1-span,2-story concrete-filled rectangular steel tubal(CFRST)frame under lateral cyclic loads,A 3-D nonlinear finite element model of concret-filled rectangular steel tubular frame is proposed in the paper.Compared with the experimental hysteresis curve,the computational results are found to be accurate,which shows that this model proposed in the paper can be applied in structure analysis of concrete-filled rectangular tubular frames.So the model was used in the finite element analysis of concrete-filled rectangular frame with different axial load level.Compared the computational displacement envelop curves,it concludes that the ductility and bearing capacity of CFRT frames reduces with the increasing axial load level.
引文
[1]马星,徐祝岭.预应力矩形钢管混凝土梁力学性能研究[J].工业建筑,2003,(1).
    [2]王晶.矩形钢管混凝土受弯性能研究[D].包头:内蒙古科技大学,2006.
    [3]沈之容,蒋涛.矩形钢管混凝土结构的经济性分析[J].特种结构,2001,(4).
    [4]CECS154:2004,矩形钢管混凝土结构技术规程[S].
    [5]福建省工程建设地方标准DBJ13-51-2003,钢管混凝土结构技术规程[S].
    [6]江见鲸,陆新征,叶列平.混凝土结构有限元分析[M].北京:清华大学出版社,2005.
    [7]ABAQUS.ABAQUS Theory Manual[Z].2003.
    [8]Lee J,G L Fenves.Plastic-damage model for cyclic loading of con-crete structures[J].Journal of Engineering Mechanics,1998,124(8):892-900.
    [9]王铁成,卢明奇.低周反复荷载下方钢管混凝土框架抗震性能的试验研究[J].地震工程与工程振动,2003(3).
    [10]王文达,钢管混凝土柱-钢梁平面框架力学性能的研究[D].福州:福州大学,2006.
    [11]韩林海.钢管混凝土结构[M].北京:科学出版社,2004.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心