曲线刚构桥上无缝线路附加纵向力理论分析  

Study on additional longitudinal forces of jointless track on curved rigid frame bridge

作　　者：李保友[1] 唐进锋[1] 宁明哲[1] 张建[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《工程建设》2007年第1期6-9,共4页Engineering Construction

摘　　要：建立以轨道、桥梁、支座、墩台和基础为整体结构的附加纵向力计算有限元模型,依据“对号入座”法则编制了计算曲线刚构桥上无缝线路的程序。计算了南昆线上板其二号大桥附加伸缩力、挠曲力和断轨力,计算结果符合实际,体现桥上无缝线路梁轨相互作用原理。The finite element model was established which was used to calculate additional longitudinal forces with the track, beams, bearings, pier, abutments and foundation as an integrated system, and programs were made to calculate the jointless track on rigid frame bridge with the＂set-in-right-position＂ rule. The addi- tional contractility,deflection force and rail breaking force of No.2 Banqi bridge on Nanning-Kunming line were calculated. The calculation results accord with practice and interaction principle of beam and rail of jointless track on bridge was showed.

关 键 词：桥上无缝线路 附加纵向力 刚构桥 有限元 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]