深江铁路首座转体桥完成转体|午夜无码片在线观看影院
1. 午夜无码片在线观看影院y聊斋志异
中新网江门10月10日电 (郭军 黄诗伟)10月10日凌晨,经过30分钟空中旋转,由中铁二十五局承建的深(圳)江(门)铁路广中江特大桥跨广珠货运铁路单体T构成功转体,标志深江铁路全线首座转体桥施工完成。

深江铁路北起深圳西丽站,南至江门站,正线全长约116公里,其中深圳西丽至广州南沙段设计时速200公里,广州南沙至江门段设计时速250公里。中铁二十五局承担了深江铁路12标13.41公里正线、545孔箱梁制、运、架以及全线铺轨等施工任务。
据中铁二十五局现场负责人石炬介绍,此次转体施工地处深江铁路控制性工程——广中江特大桥跨虎跳门桥段,该桥段长13.41公里,其337号至339号墩上跨广珠货运铁路T构转体桥重达11216吨、跨度160米。项目采用转体法施工,首先平行于既有铁路浇筑梁体,再通过转体系统,将梁体顺时针旋转30.2度完成转体对接。转体施工上跨日均30列货运列车、5.1万吨货运量的既有广珠货运铁路运输动脉,“转动轴”主墩承台距离该货运线中心仅9.78米,梁体翼缘在横向距离货运线雨棚1.62米的极限条件下施工,施工难度大,安全风险高。
转体过程中,项目团队创新运用5G技术,构建基于BIM与数字孪生的动态智能监控平台,实时监测转体角速度、线速度等关键控制参数以及梁体姿态、标高和转动系统关键部位应力,实现“数字化调控”,转体精度误差小于0.5度,较传统工艺减少30%后期调整工作量,为安全平稳转体提供数据支撑。

深江铁路作为粤港澳大湾区轨道交通网络的重要组成部分,建成后将实现深圳前海自贸片区与广州南沙自贸片区半小时高铁互联互通,进一步织密大湾区轨道交通网络。未来,深江铁路将与广深港高铁、深茂铁路等线路互联互通,成为推动珠三角西翼片区经济社会发展的“黄金通道”,对促进区域协调发展具有重大战略意义。(完)
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