合龙及体系转换顺序对多跨刚构-连续组合梁桥影响分析  

Impact analysis of closure order and system transformation order for bridges with rigid frame-combined continuous beam

作　　者：易锦[1] 贺国京[1] 陆杰 唐志奇 舒丹 

机构地区：[1]中南林业科技大学土木工程与力学学院,湖南长沙410004 [2]株洲市公路管理局,湖南株洲412000 [3]中铁二十五局集团公司第三工程公司,湖南长沙410075

出　　处：《铁道科学与工程学报》2013年第5期23-27,共5页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(51108470);湖南省教育厅高等学校科学研究一般项目(09C1022);湖南省重点学科建设资助项目(2012ZDXK003)

摘　　要：以长株潭城际铁路湘江特大桥12跨刚构-连续组合梁桥为工程背景,建立有限元分析模型,对5种合龙方案和3种体系转换顺序进行数值模拟,计算该桥竖向位移和底板应力,探讨合龙次序和体系转换顺序对该类桥梁的受力和变形规律,得出宜采用方案1、2或者5的合龙顺序和方案3的体系转换顺序的结论,为同类桥梁设计和施工提供借鉴和参考。Taking Xiangjiang bridge on changzhutan intercity railway as an engineering background, which is 12 span bridge with rigid frame - combined continuous beam in cantilever pouring construction, the finite element model was constructed respectively. 5 conventional closure options and 3 system transformation orders were simu- lated to calculate the vertical displacement and stress of the bridge. The stress and deformation were discussed under different closure orders and system transformation orders on the general rules for such similar bridge were discussed. The results show that plan 1,2or5 closure sequence and plan 3 system transformation are appropriate. The idea has certain referential value for the designing and constructing of same type bridge.

关 键 词：刚构-连续组合梁桥 合龙顺序 体系转换 竖向位移 应力 

分 类 号：U446.1[建筑科学—桥梁与隧道工程]