| 盾构施工对邻近桩基础影响的简化分析方法 |
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| 引用本文： | 楼晓明,刘建航.盾构施工对邻近桩基础影响的简化分析方法[J].地下空间与工程学报,2010,6(6). |
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| 作者姓名： | 楼晓明 刘建航 |
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| 作者单位： | 同济大学地下工程系;上海申通地铁集团有限公司; |
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| 摘 要： | 根据Loganathan和Poulos提出的估算盾构施工产生的土层位移的简易方法,假定已知土层损失,可预测隧道周边土层的水平位移。邻近盾构的桩基础也要随土层位移产生内力、位移变化,而成为被动桩。参照弹性地基梁法,建立由土体水平位移导致的桩-土共同作用方程,通过杆系有限单元法实现求解盾构施工产生的桩身内力和位移,计算中可考虑不同的桩顶约束条件和土层分布条件。根据桩身内力、位移控制要求,可确定盾构隧道施工时的土层损失控制要求。
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| 关 键 词： | 盾构 被动桩 土层损失 弹性地基梁 |
A Simplified Method for Analysis of Shield Tunneling Impact on the Adjacent Piles |
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| Lou Xiaoming,Liu Jianhang.A Simplified Method for Analysis of Shield Tunneling Impact on the Adjacent Piles[J].Chinese Journal of Underground Space and Engineering,2010,6(6). |
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| Authors: | Lou Xiaoming Liu Jianhang |
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| Affiliation: | Lou Xiaoming1,Liu Jianhang2(1.Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China,2.Shanghai Shentong Metro Group Company,Shanghai 201103,China) |
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| Abstract: | If ground loss is determined,tunneling-induced lateral displacement of subsoil can be predicted according to the method presented by Loganathan and Poulos.Piles adjacent to tunnel will be bended due to lateral displacement of subsoil and become passive piles.By means of the method of elastic beam on foundation,equation of pile-soil interaction induced by lateral displacement of subsoil can be established,as well as tunneling-induced displacement and force along pile can be predicted,in which different restr... |
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| Keywords: | tunnel passive pile ground loss beam on elastic foundation |
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