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“开始慢慢迎迎合”-梳理天下新闻

武汉市第1开始慢慢迎迎合2座长江大桥进入主缆架设阶段

来源: 看看新闻
2025-01-14 07:45:23

最佳回答

“开始慢慢迎迎合”武汉市第1开始慢慢迎迎合2座长江大桥进入主缆架设阶段

  中新开始慢慢迎迎合网鄂州1月13日电 (卢琪 开始慢慢迎迎合柳涛 周瑜)新港高速公路双柳长江大桥首根主缆索股13日成功架设,标志着湖北省第40座、武汉市第12座长江大桥正式进入主缆架设阶段。

  双柳长江大桥全长1630米,主桥跨度1430米,北岸位于武汉市新洲区,南岸位于鄂州市华容区。该项目由湖北交投集团投资建设、中铁大桥局集团和中交二航局承建。

图为建设中的双柳长江大桥。(无人机照片) 郑子颜 摄

  当日上午9时许,重达69吨的首根主缆索股通过中铁大桥局自主研发的智能牵引系统进行架设。自南锚碇开始,主缆索股缓缓穿过大桥的“空中走廊”——猫道,约10时28分顺利到达北锚碇。

  双柳长江大桥共有上下游2根主缆,每根主缆长2450米,由169根索股组成。单根索股由127丝直径为6毫米的锌铝稀土合金镀层高强钢丝组成,钢丝抗拉极限强度为1960兆帕。

  “首根索股为基准索股,较普通索股其精度要开始慢慢迎迎合求更高,架设难度更大。”中铁大桥局双柳长江大桥项目部副总工程师柳涛说,严格控制基准索股架设精度是保障后续主缆架设质量的关键。

  为保证首根基准索股精准架设,项目使用了智能牵索器对基准索股进行牵引。同时采用Ai视频监测技术对索股架设过程进行监控,可以判断索股是否跑偏及脱轨、索股是否发生“散丝”等。在架设过程中,项目技术团队在南北两岸设置了4台高精度仪器,同时进行索股垂度观测,动态调整,将架设误差控制在毫米级。

图为建设中的双柳长江大桥。 (无人机照片,中铁大桥局集团供图)

  “项目应用的智慧索股和中央除湿系统,是国内首次同时在桥梁主缆上应用,这有助于运营期对主缆湿度、温度、应变的监控监测。”柳涛介绍,主缆采用全长分布式光纤智能索股,并纳入桥梁健康监测系统。其中,智能索股通过抽换单根索股中的2根钢丝,内置光纤应变传感器和光纤温湿度传感器,可对主缆内部分布式应变和分布式温度、湿度实时在线监测。主缆设置中央除湿系统,用于主缆使用期间除湿通风,可延长主缆的使用寿命。

  据了解,在全部主缆索股架设完成后,项目还将进行主桥钢箱梁架设、主缆缠丝、桥面铺装等施工作业。

  双柳长江大桥是国家高速公路网G9906武汉都市圈环线重要组成部分,建成后,将增强过江通道供给能力,进一步优化武汉都市圈环线高速公路路网结构,助力“武鄂黄黄”都市圈一体化进程。(完)

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