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社评“欧美黄片”-梳理天下新闻

西渝高铁康欧美黄片渝段陕西境内安康汉江大桥首节拱肋完成吊装

来源: 证券时报e公司
2024-12-23 12:53:36

最佳回答

“欧美黄片”西渝高铁康欧美黄片渝段陕西境内安康汉江大桥首节拱肋完成吊装

  中新欧美黄片网西安12月20日电(欧美黄片张远 焦键)记者20日从西安铁路局获悉,西渝高铁康渝段陕西境内安康汉江大桥首节拱肋于近日完成吊装,标志着康渝高铁安康汉江大桥的桥梁建设进入了新的阶段。

图为作业现场。曹文远 摄

  安康汉江大桥,作为西渝高铁的重要组成部分,全长367.9米,采用钢混结合梁结构,主梁设计采用了半漂浮约束体系。该桥跨越了G211国道、汉江和S207省道,其主拱跨度达到290米,是全国高速铁路单孔跨度最大的时速350km/h中承式钢管混凝土拱桥。全桥共有52根桩基础,主跨采用缆索吊装法,边跨采用支架吊拼法施工,钢结构主拱肋及主梁的安装皆采用“缆索吊装法”施工,在拼装平台预拼装后,使用150t的龙门吊及平板运输车运送至桥位,通过两岸的缆索吊吊装施工。

  据悉,整个施工过程中对钢构件的内力、变形控制具有较高的要求,拱肋及主梁的安装均需采用缆索吊装,施工安全风险较高。项目团队充分发挥了数字建造优势,利用移动互联网、三维GIS、视频监控、大数据等智能化施工技术,构建了基于BIM的数字化工程管控平台。通过这一平台,项目团队实现了对不良地质的自动监测、缆索吊和龙门吊的安全监控,在无人机自动巡航观测系统的加持下,从而大幅提升了施工项目的安全生产总体管控能力。此次首节拱肋的吊装,依托智能建造平台的动态观测,随着缆索吊吊装设备的缓缓启动,重达143吨的首节钢箱拱肋被稳稳地吊起,并准确地到达了预定位置。

  西渝高铁安康至重庆段是中国“八纵八横”高铁网北京至昆明的京昆通道和包头、银川至海口的欧美黄片包(银)海通道的重要组成部分。线路自安康西站起,经陕西省安康市,重庆市城口县,四川省达州市、广安市,重庆市合川区、北碚区,引入重庆枢纽重庆西站,共设安康西、岚皋、城口、樊哙、宣汉南、达州南、大竹、广安东、合川东、北碚南、重庆西11座车站,其中重庆西为既有车站,其他为新建车站。

  西渝高铁康渝段接续已经开工建设的西康高铁,将形成西安至重庆的高铁大通道。西渝高铁建成通车后,西安至重庆的出行时间有望从现在的6小时左右缩短至2.5小时左右,将会推动中西部地区铁路路网结构进一步完善,极大便利沿线人民群众出行。(完)

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