基于子结构方法的高架铁路浮桥的有限元分析

利用有限元子结构分析方法解决了具有复杂上部结构的拼装式超大型浮游结构的静力分析问题。按照拼装式高架铁路浮桥的结构特点,将其划分为多种子结构,实现了各功能子结构模块之间的耦合分析,并能在浮桥总体分析的同时进行重要部位局部细化分析,以及对子结构之间连接接头传力功能的分析,还可解决锚定系统对浮桥的非线性影响以及连接接头之间的连接间隙影响等非线性问题,利用有限元软件ANSYS进行了实现。计算表明,该方法能够显著地减少建模及计算工作量,缩短分析过程,节省机时,解决拼装式浮游结构的连接间隙影响、锚定影响等非线性问题。

Finite-element analysis of elevated railway floating bridge based on substructure method

With the finite-element substructure analysis method, the structure static analysis of the assembling huge floating structure was solved. The elevated railway floating bridge was divided into substructures according to the characteristics of the bridge structure. The coupling analysis between the functional substructure modules was achieved, together with the detail analysis within the general analysis, the simulation of the function of the connection between the function modules, the solutions of the gaps between the connections of the module, and the nonlinear influence of the mooring system. And the problems above were solved in the ANSYS program. The practices prove that the method can effeciently reduce the modeling and calculating time, cut down the analysis procedure, and solve the nonlinear problems of the gaps between the connections of the module and the influence of the mooring system.