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FAN Wen, SHAO Sheng-jun, YANG Chun-ming, SHAO Shuai. Method for calculating collapsible compressive stress of loess tunnel foundation[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(zk2): 80-85. DOI: 10.11779/CJGE2015S2017
Citation: FAN Wen, SHAO Sheng-jun, YANG Chun-ming, SHAO Shuai. Method for calculating collapsible compressive stress of loess tunnel foundation[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(zk2): 80-85. DOI: 10.11779/CJGE2015S2017

Method for calculating collapsible compressive stress of loess tunnel foundation

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  • Received Date: March 25, 2015
  • Published Date: July 24, 2015
  • The differential settlement produced by collapsible deformation of loess tunnel foundation is an important factor to cause failure of lining structures. Firstly, two methods for calculating base pressure of the lining structures are derived based on the Terzaghi formula from loose medium surrounding rock pressure and the loose rock pillar formula considering the dead load of lining structures. Then, the analytical solution of vertical compressive stress of tunnel foundation is got when that elastic half-space answer is applied and the base pressure of lining structures and the self-weight stress of at both sides of tunnel overburden soil are considered. Thereby an analytic method for collapsible compressive stress of loess tunnel foundation is proposed. The difference between different buried depths of tunnel foundation pressure and self-weight stress is analyzed by using the two methods for tunnel base pressure, and the difference between the vertical compressive stress of tunnel foundation and the field self-weight stress is analyzed by using the proposed method. The distribution variation laws of foundation compressive stress of vertical and field self-weight stress with the increase of depth are obtained. Compared with the numerical results, the proposed method is proved to be more reliable and safer. It may provide the compressive stress condition for reasonable evaluation of the collapsibility of loess tunnel foundation.
  • [1]
    罗宇生. 湿陷性黄土地基评价[J]. 岩土工程学报, 1998, 20(4): 87-91. (LUO Yu-sheng. Assessment. of collapsibility ofcollapsible loess foundation[J]. Chinese Journal of Rock Mechanics and Engineering, 1998, 20(4): 87-91. (in Chinese))
    [2]
    GB50025—2004湿陷性黄土地区建筑规范[S]. 2004. (GB50025—2004 Code for building construction in collapsible loess regions[S]. 2004. (in Chinese))
    [3]
    李志业, 曾艳华. 地下结构设计原理与方法[M]. 成都: 西南交通大学出版社, 2005. (LI Zhi-ye, ZENG Yan-hua. Design principle and method of underground structures[M]. Chengdu: Southwest Jiaotong University Press, 2005. (in Chinese))
    [4]
    张利生. 湿陷性黄土试验方法探讨[J]. 岩土学, 2001, 22(1): 207-210. (ZHANG Li-sheng. Discussions on test of collapsible loess[J]. Rock and Soil Mechanics, 2001, 22(1): 207-210. (in Chinese))
    [5]
    刘祖典. 黄土力学与工程[M]. 西安: 陕西科学技术出社, 1997. (LIU Zu-dian. Loess mechanics and engineering[M]. Xi'an: Shaanxi Science and Technology Press, 1997. (in Chinese))
    [6]
    邵生俊, 陶 虎, 许 萍. 黄土结构性力学特性研究与应用的探讨[J]. 岩土力学, 2011, 32(增刊 2): 42-50. (SHAO Sheng-jun, TAO Hu, XU Ping, Discussing on research of mechanics characteristics of loess considering structural behavior and its application[J]. Rock and Soil Mechanics, 2011, 32(S2): 42-50. (in Chinese))
    [7]
    赵 勇, 李国良, 喻 渝. 黄土隧道工程[M]. 北京: 中国铁道出版社, 2011. (ZHAO Yong, LI Guo-liang, YU Yu. Loess tunnel engineering[M]. Beijing: China Railway Press, 2011. (in Chinese))
    [8]
    徐干成, 白洪才, 郑颖人, 等. 地下工程支护结构[M]. 北京: 中国水利水电出版社, 2002. (XU Gan-cheng, BAI Hong-cai, ZHENG Ying-ren, et al. Surpporting structure of underground engineering[M]. Beijing: Chinese Water Conservancy and Hydropower Press, 2002. (in Chinese))
    [9]
    赵学勐, 王 璐. 黄土拱作用机理剖析[J]. 岩土力学, 2009, 30(增刊2): 9-12. (ZHAO Xue-meng, WANG Lu. Analysis of mechanism of loess arching[J]. Rock and Soil Mechanics, 2009, 30(S2): 9-12. (in Chinese))

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