某非对称独塔斜拉桥索力优化分析

Cable Force Optimization Analysis of Asymmetric Single Tower Cable-stayed Bridge

以某非对称独塔斜拉桥为实际工程背景,借助有限元软件Midas/Civil作为分析平台,建立该斜拉桥的仿真模型并进行静力分析,采用以结构体系弯曲应变能和拉压应变能之和最小为控制目标,基于影响矩阵法的优化计算方法,得出优化成桥索力,使斜拉桥成桥时整个结构体系处于合理的受力状态和线性变化中。

Finite element software Midas/Civil was used to establish a simulation model of an asymmetric single-tower cable-stayed bridge,and static analysis was carried out on it.The control objective was to minimize the sum of the bending strain energy and the tension strain energy of the structural system.Combined with the influence matrix method,the optimized cable force of the bridge was obtained,so that the structural system was in a reasonable state of stress and linear change when the bridge was completed.