用自动子结构有限元法实现预应力混凝土桥空间应力分析

Spatial Stress Analysis of PC Bridge with Auto-Sbstructure FEM

本文介绍了一种用于求解大型有限元问题的方法──自动子结构方法。用该方法对某地一座三跨预应力混凝土连续梁进行了桥跨中支点墩顶梁段混凝土应力分析，取得良好效果。

In this paper, a new method for solving larBe scale finite element equation group──auto-substructure spatial FEM , which is based on the auto-subetructure dividng and finite element method, is prasented. By means of the auto-substructure spatial FEM,analysis for the concrete stresses in the segments on top of the middle supports of a 3-span PC continuous bridge were completed and good results were obtained.