盆式橡胶支座与垫石组合的接触有限元分析

发布时间：2018-03-08 08:12

本文选题：盆式橡胶支座　切入点：支承垫石　出处：《铁道科学与工程学报》2017年01期 　论文类型：期刊论文

【摘要】：以高速铁路桥梁支座和垫石为工程背景,详细介绍盆式橡胶支座的构造与垫石的布筋,运用ANSYS程序对支座下钢盆与钢筋混凝土垫石间的受力性能进行非线性有限元数值分析,对结构数值模拟中单元的选取、材料的定义,有限元建模过程及支座与垫石之间接触摩擦等关键技术进行系统分析。研究在载荷作用下支座垫石组合各个构件的受力性能,并以单支座垫石为例,探讨不同支座底板厚度、不同垫石高度对两者组合结构的应力状态和变形的影响。研究结果表明:有限元分析能很好地模拟支座垫石组合的实际受力性能;主要设计参数的变化会对支座-垫石组合的受力产生相应影响。研究成果能为桥梁工程应用提供参考。
[Abstract]:Taking the bridge support and cushion stone of high-speed railway as the engineering background, the structure of the basin rubber bearing and the reinforcement of the cushion stone are introduced in detail. The nonlinear finite element numerical analysis of the mechanical behavior between the steel basin and the reinforced concrete cushion stone under the support is carried out by using ANSYS program. The selection of elements, the definition of material, the process of finite element modeling and the contact friction between bearing and cushion are systematically analyzed in this paper. Taking single cushion stone as an example, the thickness of different bearing base plate is discussed. The results show that the finite element analysis can well simulate the actual mechanical behavior of the supported cushion stone combination. The change of the main design parameters will have a corresponding effect on the bearing-cushion-stone combination, and the research results can provide a reference for the application of bridge engineering.
【作者单位】：中南大学土木工程学院;
【基金】：国家自然科学基金资助项目(51378504)
【分类号】：U443.36

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