基于有限元方法的斜拉索线形参数计算
Calculation of Linear Parameters of Stay Cable Based on Finite Element Method
杨洋1
作者信息
- 1. 招商局重庆交通科研设计院有限公司,重庆市 400067
- 折叠
摘要
随着斜拉桥的跨径越来越大,斜拉索的非线性特征所引发的问题变得更加突出,精确计算斜拉索的线形成为重要研究课题.以往计算斜拉索的线形参数均是采用解析方法,现将以有限元方法为计算工具,构建可调节无应力索长的斜拉索有限元模型,通过二分法迭代,精确计算出斜拉索的线形,再提取其设计参数,并与解析计算结果作对比.结果表明用该方法计算斜拉索线形参数得到的精度较高,可以应用于斜拉桥设计.
Abstract
With the increasing span of cable-stayed bridges,the problems caused by the nonlinear characteristics of stay cables become more prominent.The accurate calculation of the linear shape of stay cables has become an important research subject.In the past,the linear parameters of stay cables were calculated by analytical method.But now,the finite element method is used as a computing equipment to build the finite element model of stay cable to adjust the unstressed cable length.Through the dichotomy iteration,the linear shape of the stay cable is accurately calculated,and its design parameters are extracted.And compared with the analytical calculation results,the results show that this method has a high accuracy in calculating the linear parameters of stay cables and can be applied to the design of cable-stayed bridges.
关键词
桥梁工程/斜拉桥/拉索/无应力长度Key words
bridge engineering/cable-stayed bridge/stay cable/unstressed length引用本文复制引用
出版年
2024
NETL
NSTL
万方数据