悬链线单元在悬索桥主缆下料长度计算中的应用  

Application of Catenary Element to Calculating the Fabrication Length of the Main Cable of Suspension Bridges

作　　者：潘永仁[1] 范立础[1] 

机构地区：[1]同济大学,上海200092

出　　处：《结构工程师》1998年第3期20-24,46,共6页Structural Engineers

基　　金：国家科委攀登计划(B)项目!(批准编号85-40)[重大土木与水利工程;安全性与耐久性的基础研究]子课"大跨度斜拉桥;悬索桥工程控制研究

摘　　要：本文用悬链线单元模拟主缆，通过选代计算了主缆的线形及下料长度。悬链线单元的应用，简化了主缆与鞍座相切点位置及主缆下料长度的求解方法。算例表明结果具有很高精度。In this paper, the curve and fabrication length of the main cable which is modelled through catenary elements are calculated with the iterative method. By employing the eatenary element, the approach of calculating the points of tangency at saddles and fabrication length of the main cable is simplified. Numerical example shows that the result is more precise.

关 键 词：悬链线单元 悬索桥 主缆下料长度 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]