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解惑“久一线产区二线产区三线产区”-知识课堂

世界最大跨久一线产区二线产区三线产区度无砟轨道斜拉桥顺利合龙

来源: 中国蓝新闻网
2024-10-31 21:22:35

最佳回答

“久一线产区二线产区三线产区”世界最大跨久一线产区二线产区三线产区度无砟轨道斜拉桥顺利合龙

  中新久一线产区二线产区三线产区网佛山10月31日电 (郭军 久一线产区二线产区三线产区王祥 李守钦)世界上跨度最大的无砟轨道斜拉桥——广湛高铁佛山特大桥跨东平水道斜拉桥31日顺利合龙,标志着该大桥主体工程正式完工,向全线建成通车迈出关键一步。该斜拉桥由广东省铁投建设、中国铁设EPC总承包、中铁广州工程局集团承建。

世界上跨度最大的无砟轨道斜拉桥——广湛高铁佛山特大桥跨东平水道斜拉桥31日顺利合龙。苏明 摄

  据悉,广湛高铁佛山特大桥是全线控制性工程,位于佛山市南海区、三水区和高明区境内,全长15.652公里。该大桥是集斜拉桥、系杆拱桥、钢混刚构桥、转体连续梁桥、普通连续梁桥、预制简支箱梁等于一体的大型综合性桥梁,涉及桥梁种类多、结构复杂,有“桥梁小博物馆”之称。此次合龙的跨东平水道斜拉桥全长725米,为主跨350米双塔双索面钢-混混合梁斜拉桥,建成后将成为世界上跨度最大的时速350公里高速铁路无砟轨道钢-混混合梁斜拉桥。

世界上跨度最大的无砟轨道斜拉桥——广湛高铁佛山特大桥跨东平水道斜拉桥31日顺利合龙。郭军 摄

  据中铁广州工程局集团项目负责人介绍,在深水超大哑铃型承台施工中,项目技术团队研发了国内首创的“双壁钢围堰+锁扣钢管桩围堰”组合式围堰,分区域施工再连通成整体围堰的施工工艺,有效克服了浅埋砂岩地质大型承台钢围堰设计和施工难的问题;运用BIM技术对每节段主塔结构尺寸进行模拟,实施精准环向预应力管道定位和索道管定位,确保带弧A形主塔施工精度;研发应用梁钢梁架设与桥面板安装异步施工工法,大幅提升了施工效率;同时,采用自动数据采集系统,确保主桥精准合龙,为后期无砟轨道线形控制提供可靠条件。

世界上跨度最大的无砟轨道斜拉桥——广湛高铁佛山特大桥跨东平水道斜拉桥31日顺利合龙。苏明 摄

  广湛高铁自广州站引出,向西经佛山、肇庆、云浮、阳江、茂名、湛江,终至湛江北站,新建双线401公里,设计时速350公里,是国家“八纵八横”高速铁路网、沿海客运大通道的重要组成部分,也是广东省历史上投资体量最大、建设里程最长的高铁项目。项目建成通车后,广州中心城区至湛江中心城区可实现90分钟互达,并将成为连接粤港澳大湾区、海南自贸港、北部湾城市群的关键一环,对粤西三地加速融入大湾区、促进产业转移及经济增长发挥巨大作用。(完)

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