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LI Xiu-di, zheng Ying-ren, YUAN Yong, shi shao-qing. Strength reduction method for submarine immersed tunnels[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(10): 1876-1882.
Citation: LI Xiu-di, zheng Ying-ren, YUAN Yong, shi shao-qing. Strength reduction method for submarine immersed tunnels[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(10): 1876-1882.

Strength reduction method for submarine immersed tunnels

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  • Received Date: January 04, 2013
  • Published Date: October 19, 2013
  • The strength reduction method is proposed to study the safety and stability of a submarine immersed tunnel made of reinforced concrete under static loading. Firstly, based on the strain compatibility principle considering the distribution and mechanical characteristics of reinforcing bars, formulas for calculating the shear strength and the tensile strength of the equivalent model of reinforced concrete structures are derived. Secondly, a non-linear numerical model for the strength reduction method considering structure-soil-seawater interaction is established by means of FLAC3D software to simulate the failure of the immersed tunnel. The simulated results show that a sudden change of displacement can not be used as one of failure criterions for the immersed tunnel. The safety factor of the immersed tunnel is obtained considering the plastic state, shear strain increment and relationship between the tunnel roof displacements and the reduction factors. By using the strength reduction method, the failure mechanism of the immersed tunnel is revealed. Failure modes of the immersed tunnel section are mainly the shear failure and the tensile failure distributed near the center of the tunnel roof slab and the intersection between the roof slab and the two lateral walls.
  • [1]
    孙 钧. 海底隧道工程设计施工若干关键技术的商榷[J]. 岩石力学与工程学报, 2006, 25(8): 1513-1520. (SUN Jun. Discussion on some key technical issues for design and construction of undersea tunnels[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(8): 1513-1520. (in Chinese))
    [2]
    王梦恕. 水下交通隧道发展现状与技术难题—兼论“台湾海峡海底铁路隧道建设方案”[J]. 岩石力学与工程学报, 2008, 27(11): 2161-2172. (WANG Meng-shu. Current developments and technical issues of underwater traffic tunnel-discussion on construction scheme of taiwan strait undersea railway tunnel[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(11): 2161-2172. (in Chinese))
    [3]
    杜朝伟, 王秀英. 水下隧道沉管法设计与施工关键技术[J]. 中国工程科学, 2009, 11(7): 76-80. (DU Chao-wei, WANG Xiu-ying. Key technology of design and construction on immersed tube tunnel[J]. Engineering Science, 2009, 11(7): 76-80. (in Chinese))
    [4]
    王明年, 路军富, 张建国, 等. 大断面海底隧道施工安全判定基准及应用[J]. 岩土工程学报, 2010, 32(6): 867-873. (WANG Ming-nian, LU Jun-fu, ZHANG Jian-guo, et a1. Determinant criterion for safety of large section subsea tunnel and its application during construction[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(6): 867-873. (in Chinese))
    [5]
    DAWSON E M, ROTH W H, DRESCHER A. Slope stability analysis by strength reduction[J]. Géotechnique, 1999, 49(6): 835-840.
    [6]
    赵尚毅, 郑颖人, 时卫民, 等. 用有限元强度折减法求边坡稳定安全系数[J]. 岩土工程学报, 2002, 24(3): 343-346. (ZHAO Shang-yi, ZHENG Ying-ren, SHI Wei-min, et al. Analysis on safety factor of slope by strength reduction FEM[J]. Chinese Journal of Geotechnical Engineering, 2002, 24(3): 343-346. (in Chinese))
    [7]
    黄光虎, 滕伟福, 高 林. 基于强度折减法的港珠澳大桥沉管隧道干坞工程高边坡稳定性分析[J]. 安全与环境工程, 2012, 19(3): 111-115. (HUANG Guang-hu, TENG Wei-fu, GAO Lin. Stability analysis of high rock slope in the dry rock project of Hong kong-Zhuhai-Macao bridge immersed tunnel based on strength reduction method[J]. Safety and Environmental Engineering, 2012, 19(3): 111-115. (in Chinese))
    [8]
    赵尚毅, 郑颖人, 王建华, 等. 基于强度折减安全系数的边坡岩土侧压力[J]. 岩石力学与工程学报, 2010, 29(9): 1760-1766. (ZHAO Shang-yi, ZHENG Ying-ren, WANG Jian-hua, et al. Discussion on calculation method of slope rock-soil lateral pressure based on factor of safety with strength reduction[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(9): 1760-1766. (in Chinese))
    [9]
    张黎明, 郑颖人, 王在泉, 等. 有限元强度折减法在公路隧道中的应用探讨[J]. 岩土力学, 2007, 28(1): 97-101. (ZHANG Li-ming,ZHENG Ying-ren,WANG Zai-quan,et a1. Application of strength reduction finite element method to road tunnels[J]. Rock and Soil Mechanics, 2007, 28(1): 97-101. (in Chinese))
    [10]
    郑颖人, 赵尚毅, 邓楚键, 等. 有限元极限分析法发展及其在岩土工程中的应用[J]. 中国工程科学, 2006, 8(12): 39-61. (ZHENG Ying-ren, ZHAO Shang-yi, DENG Chu-jian, et a1. Development of finite element limit analysis method and its applications in geoteehnical engineering[J]. Engineering Science, 2006, 8(12): 39-61. (in Chinese))
    [11]
    郑颖人, 赵尚毅, 孔位学, 等. 极限分析有限元法讲座-Ⅰ岩土工程极限分析有限元法[J]. 岩土力学, 2005, 26(1): 163-168. (ZHENG Ying-ren, ZHAO Shang-yi, KONG Wei-xue, et a1. Geoteehnieal engineering limit analysis using finite element method[J]. Rock and Soil Mechanics, 2005, 26(1): 163-168. (in Chinese))
    [12]
    郑颖人, 赵尚毅, 李安洪, 等. 有限元极限分析法及其在边坡工程中的应用[M]. 北京: 人民交通出版社, 2011. (ZHENG Ying-ren, ZHAO Shang-yi, LI An-hong, et a1. FEM limit analysis and its application in slope engineering[M]. Beijing:China Communications Press, 2011. (in Chinese))
    [13]
    艾亿谋, 杜成斌, 洪永文, 等. 混凝土坝抗震加固中钢筋混凝土的动力本构模型[J]. 水利学报, 2009, 40(3): 289-295. (AI Yi-mou, DU Cheng-bin , HONG Yong-wen, et al. Dynamic constitutive model for reinforced concrete in a seismic strengthening of concrete dam[J]. Journal of Hydraulic Engineering, 2009, 40(3): 289-295. (in Chinese))
    [14]
    Itasca Consulting Group, Inc. Fast Lagrangian analysis of continua in three dimensions(version 3.0)user’s manual[R]. [S.1.]:Itasca Consulting Group, Inc., 2003.
    [15]
    郑颖人, 赵尚毅, 张玉芳. 极限分析有限元法讲座-Ⅱ有限元强度折减法中边坡失稳的判据探讨[J]. 岩土力学, 2005, 26(2): 332-336. (ZHENG Ying-ren, ZHAO Shang-yi, ZHANG Yu-fang. Study on slope failure criterion in strength reduction finite element method[J]. Rock and Soil Mechanics, 2005, 26(2): 332-336. (in Chinese))
    [16]
    张鲁渝, 郑颖人, 赵尚毅, 等. 有限元强度折减系数法计算土坡稳定安全系数的精度研究[J]. 水利学报, 2003(1): 21-27. (ZHANG Lu-yu, ZHENG Yeng-ren, ZHAO Shang-yi, et al. The feasibility study of strength-reduction method with FEM for calculating safety factors of soil slope stability[J]. Journal of Hydraulic Engineering, 2003(1): 21-27. (in Chinese))

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