作　　者： ; ;

机构地区： 华南理工大学土木与交通学院

出　　处： 《公路交通科技》 2013年第7期107-112,共6页

摘　　要： 为了探索有限元分析模型的合理性,为波形钢板结构分析和内力计算提供可靠依据,以实际工程为依托,论述将三维实体模型简化为平面模型时板体刚度和荷载折减系数对模型的影响,并考虑土体参数及结构参数,采用平面应变模型在ANSYS有限元分析软件上建立有限元分析模型,用以分析结构受力状态。利用土体弹塑性模型、结构线弹性模型和考虑土体与结构间接触问题的综合分析方法对低拱型波形钢板桥梁的应力应变状态进行探索,并将分析结果与CHBDC(加拿大桥梁设计规范)设计方法进行对比,总结结果不同的原因和简化模型的合理性。最终确定采用平面应变模型对波形钢板结构进行简化分析。 In order to investigate the rationality of the finite element analysis model and provide reliable basis of structure analysis and internal force calculation for corrugated steel plate structure, the influence of plate stiffness and load reduction factor when simplifying 3D model to 2D model is discussed. Considering soil parameters and structure parameters, the FE plane model is established by ANSYS finite element analysis software to analyze the stress state of the structure. The stress and strain states of corrugated steel plate low arch bridge are investigated using the soil elastic-plastic model, structure linear elastic model and the comprehensive analysis method considering the soil-structure contact. After comparing the analysis result with the result obtained from the CHBDC method, the reasons of different results and the rationality of the simplified model are summarized. Eventually, it is determined to use a plane strain model to simplify the analysis of corrugated steel plate structure.

关 键 词： 桥梁工程 波形钢板 平面应变模型 对比分析

领　　域： [建筑科学] [交通运输工程]