| 盾构隧道抗浮计算模式及其适应性分析 |
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| 引用本文： | 叶飞,朱合华,丁文其.盾构隧道抗浮计算模式及其适应性分析[J].公路交通科技,2009,26(5). |
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| 作者姓名： | 叶飞 朱合华 丁文其 |
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| 作者单位： | 1. 长安大学,桥梁与隧道陕西省重点实验室,陕西,西安,710064;西南交通大学,地下工程系,四川,成都,610031
2. 同济大学,岩土及地下工程教育部重点实验室,上海,200092 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，国家自然科学基金，中国博士后科学基金 |
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| 摘 要： | 施工期盾构隧道的上浮问题随着盾构隧道的大量修建而引起了广泛关注。基于盾构隧道施工中的上浮问题，系统分析了隧道上浮原因，将其归纳为上浮力作用、轴向偏心荷载作用、切口水压影响、地基回弹作用、上覆土的反向压缩效应以及砂土液化等6个方面；重点分析了因上浮力引起的隧道上浮的抗浮计算模式：从横向和纵向角度提出了局部及纵向总体2种抗浮计算模式。在局部抗浮计算模式中，依据上浮力的特性和作用范围，分为单一管片错动分析模式和整环管片错动分析模式；在纵向总体抗浮计算模式中，讨论了纵向沉降与上浮的异同，进而说明了二者的相通性；并分析了2种抗浮计算模式的适应性。
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| 关 键 词： | 隧道工程 盾构隧道 施工 上浮 管片 |
Analysis of Anti-upward Moving Calculation Mode of Shield Tunnel and Its Adaptability |
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| YE Fei,ZHU Hehua,DING Wenqi.Analysis of Anti-upward Moving Calculation Mode of Shield Tunnel and Its Adaptability[J].Journal of Highway and Transportation Research and Development,2009,26(5). |
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| Authors: | YE Fei ZHU Hehua DING Wenqi |
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| Institution: | 1.Shaanxi Provincial Key Laboratory for Highway Bridge and Tunnel;Chang'an University;Xi'an Shaanxi 710064;China;2.Department of Underground Engineering;Southwest Jiaotong University;Chengdu Sichuan 610031;3.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education;Tongji University;Shanghai 200092;China |
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| Abstract: | The upward-moving of shield tunnel in construction has brought about great concern.The reasons of shield tunnel upward-moving were analyzed and classified into six aspects,including buoyancy,axial eccentric force,slurry pressure,foundation rebound,compression of covering soil,and the sand liquescence.The upward moving of shield tunnel brought by buoyancy was discussed with emphasis.Two kinds of anti-upward moving calculation models were presented considering the transverse and longitudinal characteristics o... |
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| Keywords: | tunnel engineering shield tunnel construction upward-moving segment |
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