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社评“91吃瓜反差婊”-译文小记

全国高铁首例“托91吃瓜反差婊梁换柱”完成 为成渝中线穿行提供空间

来源: 黑龙江日报
2024-12-29 22:25:19

最佳回答

“91吃瓜反差婊”全国高铁首例“托91吃瓜反差婊梁换柱”完成 为成渝中线穿行提供空间

  中新91吃瓜反差婊网重庆12月27日电(刘心羽)91吃瓜反差婊12月27日,随着沪蓉线新井口嘉陵江特大桥T梁落在新建门式墩钢连梁支座上,成渝中线重庆枢纽施工1标井口双线特大桥下穿沪蓉线完成“托梁换柱”。该项目由中国铁路成都局集团有限公司重庆建设指挥部建设、中铁二院设计、中铁大桥局承建。

图为成渝中线重庆枢纽施工1标井口双线特大桥下穿沪蓉线完成“托梁换柱”。 刘心羽 摄

  中铁大桥局成渝中线重庆枢纽施工1标项目经理张雄介绍,该项目下穿沪蓉线新井口嘉陵江特大桥,必经位置已被23号墩、24号墩占用。此次“托梁换柱”即托起新井口嘉陵江特大桥原有的T梁,采用两个新建门式墩托换掉大桥原有的23号墩、24号墩,为成渝中线穿行提供空间。此项工作复杂,技术难度大,科技含量高,在全国铁路建设领域尚属首例。

  张雄说,本次“托梁换柱”共使用40套千斤顶配合施工,产生推力可达8000吨,钢连梁滑移就位精度要求控制在1毫米以内。总共九大步骤、14个工序仅用31.5小时完成,施工对沪蓉线高铁运营的影响降到了最低。

  记者了解到,该项目结合“大桥云”数智平台,研发了“托梁换柱”大天窗实时监控系统和营业线施工管理系统,针对“托梁换柱”进度、T梁应力位移等进行实时监测,实现全过程动态监测预警和同步精准控制,有效保障施工窗口期和作业环境安全。

  成渝中线高铁项目建成后,将与已建成运营的西安至成都高铁、郑州至重庆高铁和在建的西宁至成都高铁、成都至达州至万州高铁、西安至重庆高铁、重庆至昆明高铁、重庆至万州高铁等多条线路连通,推动成渝地区路网结构更加完善,成渝两地旅行时间进一步压缩,将极大便利沿线百姓出行,对助力成渝地区双城经济圈建设、形成西部大开发新格局具有重要意义。(完)

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