| 范家坪隧道喇叭口段施工技术 |
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| 引用本文： | 李春奎,杜立新.范家坪隧道喇叭口段施工技术[J].现代隧道技术,2011,48(2):137-140,144. |
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| 作者姓名： | 李春奎 杜立新 |
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| 作者单位： | 1. 中铁十八局集团有限公司兰渝铁路工程指挥部,甘肃武都,746041
2. 铁道部工程质量安全监督总站,北京,100844 |
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| 摘 要： | 范家坪隧道为典型的由双线经喇叭口段过渡为两单线型式的大跨铁路隧道,为了提高施工效率、实现隧道两个掌子面同时掘进,施工中采用了喇叭口段由双线向单线反向施工方案,同时采取了可变式整体大模板液压台车台架配合小模板进行大跨段二次衬砌的施工技术。文章重点介绍了施工方案比选、施工步骤、施工效果。
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| 关 键 词： | 铁路隧道 喇叭口段 反向施工 分步开挖法 |
Construction Techniques for the Trumpet Section of Fanjiaping Tunnel |
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| Li Chunkui,Du Lixin.Construction Techniques for the Trumpet Section of Fanjiaping Tunnel[J].Modern Tunnelling Technology,2011,48(2):137-140,144. |
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| Authors: | Li Chunkui Du Lixin |
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| Institution: | Li Chunkui1 Du Lixin2(1 Construction Headquarters of Lanzou-Chongqing Railway,China Railway No.18 Construction Bureau Group Co.,Ltd.,Wudu 746041,2 Quality and Safety Supervision Station,the Ministry of Railways,Beijing 100844) |
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| Abstract: | Fanjiaping tunnel is a large-span railway tunnel typically transformed from double-track to two single-track section by means of a trumpet section.The project adopted the reverse excavation from single-track to double-track section,combined with the section-variable rack of integral hydraulic jumbo to cast the secondary lining at large-span section with the help of small formwork..The paper focuses on the construction option comparison,construction procedure and construction effect of the project. |
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| Keywords: | Railway tunnel Trumpet section Reverse construction Sequential excavation |
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