短轨枕式整体道床高架结构变形控制指标分析  

Analysis of Deformation Control Index of Shorter-sleeper Holistic Bed on Elevated Railways

作　　者：熊聪聪 潘朋[1] 张朋宽 XIONG Congcong;PAN Peng;ZHANG Pengkuan(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,Sichuan,China)

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《西南科技大学学报》2021年第1期78-84,共7页Journal of Southwest University of Science and Technology

摘　　要：为分析短轨枕式整体承轨台轨道结构桥墩位移与轨面变形的映射关系,揭示自重作用下桥墩顶在竖向、横向以及纵向3个方向位移工况下钢轨、轨道板变形及内力分布规律,以上海市轨道交通11号线花桥段为例,通过建立桥墩-梁-轨道耦合模型,并引入线路轨道静态几何尺寸容许偏差管理值,得到城市轨道交通高架结构的变形控制指标。研究表明,桥墩横向位移监测警戒值和控制值分别为12.7,25.4 mm;垂向位移监测警戒值和控制值分别为12.9,25.8 mm;顺桥向位移监测警戒值和控制值分别为5.8,9.7 mm。This paper takes the Huaqiao section of Shanghai Metro Line 11 as an example to analyze the mapping relationship between the pier displacement and the rail surface deformation of the short sleeper integral rail support platform,and reveal the deformation and internal force distribution law of the rail and track plate under the vertical,transverse and longitudinal displacement of the pier top under the dead weight.The deformation control index of the elevated structure of urban rail transit was obtained by establishing the pier-beam-track coupling model and introducing the allowable deviation management value of the static geometric dimension of the track.The results show that the warning value and control value of pier lateral displacement monitoring are 12.7 and 25.4 mm,respectively.The warning and control values of vertical displacement monitoring are 12.9 and 25.8 mm,respectively.The warning and control values of the displacement along the bridge are 5.8 and 9.7 mm,respectively.

关 键 词：短轨枕 桥墩位移 映射关系 变形控制 

分 类 号：U233[交通运输工程—道路与铁道工程] U441[建筑科学—桥梁与隧道工程]