钢管混凝土拱(单圆管)面内受力双重非线性有限元分析  

Analysis of concrete filled steel tubular (single tube) arch subjected to in-plane loads by nonlinear finite element method

作　　者：陈宝春[1] 秦泽豹[1] 彦坂熙[2] 陈友杰[1] 

机构地区：[1]福州大学土木建筑工程学院,福建福州350002 [2]日本九州大学土木工程系

出　　处：《铁道学报》2003年第4期80-84,共5页Journal of the China Railway Society

基　　金：国家自然科学基金资助(50078016)

摘　　要：提出钢管混凝土应力 应变关系采用纤维单元模型的钢管混凝土拱(单圆管)面内受力双重非线性有限元分析方法。对模型拱进行的分析表明,本文提出的方法能较好地反映钢管混凝土拱受力全过程的非线性性能。分析还表明,钢管混凝土拱的受力应考虑双重非线性问题,其中材料非线性的影响要大于几何非线性的影响。WTA method to analyze the behavior of CFST (single tube) arch is presented. Both the material and geometric nonlinear property are taken into account in the method. A fiber element model of stressstrain relation of CFST is proposed and used. Comparisons of numerical results with the test results indicate that the method proposed herein can get out the basic mechanic behaviors of the CFST arch on the whole loading progress. The analyses of the nonlinear property of the CFST arch indicate that both the material and geometric nonlinearity take role in the mechanic behaviors of CFST arch and the material nonlinear is more seriously than the geometric nonlinear.

关 键 词：钢管 钢管混凝土 拱 非线性 有限元 

分 类 号：U442[建筑科学—桥梁与隧道工程] U448.22[交通运输工程—道路与铁道工程]