| 套管咬合桩支护技术在地铁工程中的设计与应用 |
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| 引用本文： | 朱悦明,庞振勇,江彬文,刘继兵.套管咬合桩支护技术在地铁工程中的设计与应用[J].都市快轨交通,2012,25(4):82-88. |
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| 作者姓名： | 朱悦明 庞振勇 江彬文 刘继兵 |
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| 作者单位： | 1. 北京城建设计研究总院有限责任公司 北京 100037
2. 中铁五局(集团)有限公司 长沙 410117 |
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| 摘 要： | 结合对全套管钻孔咬合桩关键技术的研究及其在南京地铁工程中的应用,分析该工法的综合优势和适用条件,首次提出无筋桩的刚度贡献按10%～20%考虑的建议,满足施工工艺要求的超缓凝混凝土配制方法;成功应用具有自主知识产权的国产液压套管桩机完成了一批深大基坑的施工,对地铁车站和类似的深基坑工程有指导意义
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| 关 键 词： | 城市轨道交通 套管咬合桩 无筋桩 刚度贡献 超缓凝混凝土 南京地铁 |
| 修稿时间： | 2013/12/12 0:00:00 |
Design and Application of Cased Secant Piles in Nanjing Metro Projects |
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| Zhu Yueming
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Pang Zhenyong
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Jiang Binwen
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Liu Jibing.Design and Application of Cased Secant Piles in Nanjing Metro Projects[J].Urban Rapid Rail Transit,2012,25(4):82-88. |
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| Authors: | Zhu Yueming Pang Zhenyong Jiang Binwen Liu Jibing |
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| Institution: | 1(1.Beijing Urban Engineering Design and Research Institute Co.,Ltd.,Beijing 100037; 2.China Railway 5th Bureau Group Co.,Ltd.,Changsha 410117) |
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| Abstract: | Through the research on the key technology of cased secant piles applied in Nanjing metro construction,the paper analyses the comprehensive advantages and applicable condition of the technology.It proposes 10%~20% in stiffness contribution by the non-reinforced piles and the fabrication method of ultra-retardation concrete which satisfies the technology.Many deep foundation pit projects have been completed by adopting the domestic hydraulic cased pile-driving machines which possess proprietary intellectual property right. |
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| Keywords: | urban rail transit cased secant piles non-reinforced piles stiffness contribution ultra-retardation concrete Nanjing metro |
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