悬索桥静动力特性分析的有限板壳单元法

本文提出一种基于正交异性板壳单元悬索桥静动力分析方法，以实际工程为例。分别按梁单元模型与正交异性板壳单元模型对其进行了静力与动力分析，并对计算结果进行了详细的比较分析。计算表明，正交异性板单元模型克服了梁单元模型中存在的问题，对大跨度悬索桥整体动力性能与局部的静力性能都能做出更加精确的模拟计算。

Static and Dynamic Analysis of Suspension Bridges Based on an Orthotropic Shell Finite Element Method

In this paper, a finite element method using orthotropic shell element has been proposed to carry out static and dynamic analysis of suspension bridges. Two engineering projects have been taken as numerical examples for static and dynamic analysis with a beam element method and an orthotropic shell element method, respectively. Through comparison and contrast of these two different results, it can be concluded that the new apprach based on orthotropic shell element method has no problems which exist in the traditional approach with the beam element method, and can simulate more precisely dynamic characteristics of the whole structure and local static performance of long-span suspension bridges.