| 超大直径盾构隧道管片上浮原因与对策分析 |
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| 引用本文： | 沈鑫国,杨平,王许诺.超大直径盾构隧道管片上浮原因与对策分析[J].南京工程学院学报(自然科学版),2011,9(1):26-31. |
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| 作者姓名： | 沈鑫国 杨平 王许诺 |
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| 作者单位： | 南京林业大学土木工程学院,江苏 南京,210037 |
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| 基金项目： | 住房与城乡建设部科研项目(2009-K3-2) |
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| 摘 要： | 超大直径盾构隧道管片的抗浮问题是其普及化的瓶颈.系统总结和分析了管片上浮的原因和机理:包括地质条件、盾构工法特性及施工参数、盾构姿态、覆土厚度、管片接头、施工扰动、注浆工艺和浆液特性等.并就控制超大直径盾构隧道管片上浮提出了具体措施,以期能对超大断面的水底隧道、地铁区间隧道的浅覆土盾构施工起到借鉴作用.
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| 关 键 词： | 超大直径盾构隧道 管片上浮 机理 抗浮措施 |
An Analysis of Causes and Countermeasures of Segment Floating of Super Large Diameter Shield Tunnels |
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| SHEN Xin-guo,YANG Ping,WANG Xu-nuo.An Analysis of Causes and Countermeasures of Segment Floating of Super Large Diameter Shield Tunnels[J].Journal of Nanjing Institute of Technology :Natural Science Edition,2011,9(1):26-31. |
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| Authors: | SHEN Xin-guo YANG Ping WANG Xu-nuo |
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| Institution: | SHEN Xin-guo,YANG Ping,WANG Xu-nuo (School of Civil Engineering,Nanjing Forestry University,Nanjing 210037,China) |
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| Abstract: | Because of its anti-floating problem,super large diameter shield tunnel segment finds itself difficult to gain popularization.The analysis suggests that performances and mechanism of segment floating are closely related to geological condition,characteristics and construction parameters of shield construction,shield attitude,covering depth,joints of segment,construction disturbance,grouting technology,grout characteristics,and the like.Moreover,some concrete countermeasures are proposed to control the uplif... |
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| Keywords: | super large diameter shield tunnel segment floating mechanism anti-floating countermeasure |
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