盾构隧道开挖引起地层位移计算理论的对比与修正

张治国; 杨轩; 赵其华; 白乔木

doi:10.11779/CJGE2016S2045

盾构隧道开挖引起地层位移计算理论的对比与修正 English Version

张治国^{1, 2, 3},
杨轩¹,
赵其华³,
白乔木¹

1. 上海理工大学环境与建筑学院,上海 200093;
2. 重庆交通大学山区桥梁与隧道工程国家重点实验室培育基地,重庆 400074;
3. 成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都 610059

基金项目: 国家自然科学基金项目（51008188）; 上海自然科学基金项目（15ZR1429400）; 山区桥梁与隧道工程国家重点实验室培育基地课题（CQSLBF-Y15-1）; 地质灾害防治与地质环境保护国家重点实验室基金项目（SKLGP2015K015）

详细信息

作者简介:
张治国(1978- ),男,河北秦皇岛人,男,博士后,副教授,硕士生导师,主要从事地下工程施工对周边环境影响控制方面的研究工作。E-mail: zgzhang@usst.edu.cn。

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出版历程
- 收稿日期: 2016-05-18
- 发布日期: 2016-10-19

Assessment and modification of traditional methods for ground displacements induced by shield tunneling

1. School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China;
2. State Key Laboratory Breeding Base of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing 400074, China;
3. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China

摘要

摘要: 隧道开挖引起的地层位移历来是学术界和工程界所关注的热点问题。首先,阐述了盾构隧道开挖引起地层位移的传统计算理论,对国外5条经典盾构隧道实例进行了计算和对比,分析结果表明：Peck经验公式、Yoshikoshi法和Celestino法拟合精度均较高;Loganathan和Poulos法计算得到的最大沉降值略小于实测值;Sagaseta法与Verruijt和Booker法的计算结果几乎相同,最大沉降量均明显偏低;Park浅埋法计算结果与实测值较为吻合。其次,基于多条盾构隧道的地表沉降实测数据,得到了地表沉降槽宽度系数i_s的修正拟合公式,该公式表明：i_s与隧道的开挖半径R、埋深h和土质条件（土体内摩擦角φ）有关,且与R+h tan(45^°-φ/2)呈线性关系;此外,对多组盾构隧道深层土体沉降实测数据进行统计分析,获取了深层土体沉降槽宽度系数i_z的修正拟合公式,该公式表明：i_z与地表沉降槽宽度系数i_s之比i_z/i_s,同该土层深度h_z与隧道上覆土层厚度T之比h_z/T之间呈对数函数关系。实例对比分析结果表明：地表和深层土体沉降槽宽度系数修正拟合公式均能较好地预测地层变形。
- 盾构隧道 /
- 地表沉降 /
- 深层土体沉降 /
- 沉降槽宽度系数
Abstract: The issue of soil displacements caused by shield excavation is the hot topic in academic and engineering fields. Firstly, the traditional computation theories of soil vertical displacements are introduced. The ground surface settlements of 5 classical shield tunnels are calculated and analyzed. The analysis results show that: the fitting precision of Peck equation, Yoshikoshi method and Celestino method is higher, and the maximum settlements calculated by Loganathan & Poulos method are a little less than the measured data. The calculated results by Sagaseta method are mostly the same with those by Verruijt & Booker, while the maximum settlement is obviously small. The calculated results of Park method for shallow tunnel match well with the measured data. Secondly, based on cases of measured data of surface settlements, the modified fitting formula of width coefficient i_s of soil surface settlement trough is obtained. The formula is related to the tunnel radius R, axis depth h and soil conditions (internal friction angle φ of soil). The value of i_s is linear with R+h tan(45^°-φ/2). In addition, according to the statistical analyses of some cases of measured data of subsurface settlements, the modified fitting formula for width coefficient i_z of subsurface settlement trough is acquired. The formula for relationship between i_z/i_s and h_z/T is the logarithmic function (h_z is ground depth and T is thickness of overlying soil). The case analyses show the modified fitting formulae for the width coefficient of ground surface and subsurface trough agree with the measured data.
- shield tunneling /
- surface settlement /
- subsurface settlement /
- width coefficient of settlement trough

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参考文献(36)

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盾构隧道开挖引起地层位移计算理论的对比与修正 English Version

作者简介: 张治国(1978- ),男,河北秦皇岛人,男,博士后,副教授,硕士生导师,主要从事地下工程施工对周边环境影响控制方面的研究工作。E-mail: zgzhang@usst.edu.cn。

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出版历程

Assessment and modification of traditional methods for ground displacements induced by shield tunneling

计量

出版历程

目录

作者简介:
张治国(1978- ),男,河北秦皇岛人,男,博士后,副教授,硕士生导师,主要从事地下工程施工对周边环境影响控制方面的研究工作。E-mail: zgzhang@usst.edu.cn。