基于有限元简链五跨锚段关节过渡跨的吊弦计算方法  

Calculation Methods for Droppers in Transitional Span at Five-span Overlap Section in Simple-catenary Supported Overhead Contact Line

作　　者：李西锋 LI Xifeng

机构地区：[1]中铁电气化局集团西安电气化工程有限公司

出　　处：《电气化铁道》2019年第2期75-77,共3页Electric Railway

摘　　要：因直链形五跨关节过渡跨与普通跨吊弦计算存在区别,本文基于有限元理论对简链五跨锚段关节过渡跨的吊弦计算方法进行研究,计算中考虑了接触线的二次抛物线形状及由于接触线不等高悬挂引起的重量变化,该计算方法经实践验证,计算准确,满足验标要求。Since there are differences between calculation of droppers inside 5 span overlap section of simple-catenary supported overhead contact line and droppers inside ordinary span,therefore,the paper analyzes the calculation methods on droppers inside the transitional span at 5 span overlap section of simple-catenary supported overhead contact line on the basis of finite element theory,considerations have been given to the quadratic parabola shape of contact wire and changes of contact wire weight caused by the unequal height suspension of OCS for the calculation,and the calculation method is verified practically,calculates accurately and meets the requirements of relative acceptance standard.

关 键 词：吊弦长度 抛物线 不等高悬挂 有限元 

分 类 号：U225.48[交通运输工程—道路与铁道工程]