| 布曲河特大桥钻孔灌注桩施工工艺 |
| 投稿时间：2006-07-24 修订日期：2006-07-24 点此下载全文 |
| 引用本文：谭佳良,卿启斌,周旭荣.布曲河特大桥钻孔灌注桩施工工艺[J].钻探工程,2006,33(8):17-20.TAN Jia-liang,QING Qi-bin,ZHOU Xu-rong. Construction Technology of Bored Cast-in-place Pile Used for Outsize Bridge Over Buqu River[J]. Drilling Engineering, 2006,33(8):17-20. |
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| 基金项目:国家重点工程项目青藏铁路(2002-K00-1)资助 |
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| 中文摘要:在高原多年冻土地区，气候恶劣，生态环境脆弱，钻孔灌注桩施工中又不可避免地会遇到土层处于不同的冻结状态，施工中必须考虑并设法预防和消除由于冻土的变形、强度弱化及冻胀、融沉所引起的各种病害，因此钻孔灌注桩施工在质量、安全和环保等方面难度很大。介绍了布曲河特大桥钻孔灌注桩施工工艺，该工艺明显不同于内地通常的钻孔灌注桩施工工艺，在高原多年冻土地区是行之有效的，对高原多年冻土区钻孔灌注桩施工具有重要的参考意义。 |
| 中文关键词:青藏铁路 布曲河特大桥 钻孔灌注桩 高原冻土 热平衡 回冻 环保 |
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| Construction Technology of Bored Cast-in-place Pile Used for Outsize Bridge Over Buqu River |
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| Abstract:In plateau ever-frozen ground region with harsh climate and vulnerable ecological environment, various conditions of frozen soil layer bring difficulties to the construction of cast-in-place pile. To be up to the related standard of qualification, safety and environment protection, kinds of calamity initiated by the distortion, intensity weakness, cold expansion and melting breakdown caused by the frozen soil must be managed to prevent and remove. Construction technology of cast-in-place pile used for Buqu River is detailed. It is obviously different from normal technology used in land but effective in plateau ever-frozen ground and it can be referred to construction in similar geological conditions. |
| keywords:Qingzang Railway Buqu river outsize bridge cast-in-place pile plateau frozen ground thermal equilibrium refreezing environment protection |
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