钢管混凝土拱桥拱肋吊装几何非线性分析

Geometric Nonlinear Analysis of the Rib-hoisting for CFST Arch Bridge

研究了大跨度钢管混凝土拱桥拱肋吊装过程中的几何非线性问题 ,在此基础上编制了索、梁、杆平面结构系统的几何非线性静力分析程序。同时根据施工控制理论在前进算法的基础上采用自行编制的程序 ,对工程实例——恩施州南里渡大桥拱肋吊装过程进行了模拟计算 。

This paper is concentrated on the geometric nonlinear static analysis of the rib hoisting for concrete filled steel tubular(CFST) long span arch bridges. And a geometric nonlinear static finite element analysis program of cables, bars and beams is presented. Based on the progressive algorithm, the program of the finite element considering geometric nonlinear condition has been made to analyze the construction process of rib hoisting forecasting, which is given in Nannidu Arch Bridge in Enshi.