| 大直径基桩坍孔处理施工技术 |
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| 引用本文： | 尤春颖.大直径基桩坍孔处理施工技术[J].国防交通工程与技术,2011,9(4):38-40,30. |
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| 作者姓名： | 尤春颖 |
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| 作者单位： | 中铁十三局集团第四工程有限公司,黑龙江哈尔滨,150008 |
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| 摘 要： | 新月铁路分离式立交桥21-1基桩紧邻电气化铁路,振动较大且砂土层较厚,在试桩过程中发生坍孔。分析工程具体情况,决定采用预制钢筋混凝土沉井护壁处理。介绍了沉井的设计、加工与下沉,大直径冲击钻成孔过程及相应的质量控制措施,处理后的基桩质量良好。可为类似工程处理提供有益借鉴。
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| 关 键 词： | 大直径基桩 坍孔 沉井 冲击钻成孔 泥浆护壁 |
Construction Techniques for the Treatment of the Collapse of Bored Holes for Large-Diameter Foundation Piles |
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| You Chunying.Construction Techniques for the Treatment of the Collapse of Bored Holes for Large-Diameter Foundation Piles[J].Traffic Engineering and Technology for National Defence,2011,9(4):38-40,30. |
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| Authors: | You Chunying |
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| Institution: | You Chunying (The 4th Engineering Co. Ltd. of the 13th Bureau Group of the Railway Building Corporation of China, Harbin 150008,China ) |
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| Abstract: | Owing to the fact that the No. 21-1 foundation pile of the Xinyue Railway Separate Overpass is
near an electrified railway, where the vibration is very strong and the sand layer is thick, the wall of the bored hole collapsed in the course of test-boring |
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| Keywords: | large-diameter foundation pile collapse of bored holes caisson bored holes with impact drill maintaining the wall ofbore |
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