基于冻土正交各向异性冻胀变形的隧道冻结期地层位移数值分析

doi:10.13722/j.cnki.jrme.2014.0514

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摘要针对隧道水平冻结法施工的特点，综合考虑地层温度、地表对流等各类初始和边界条件及土体的相变潜热过程，建立隧道水平冻结温度场的数学模型。定义土体的冻胀率为瞬时体应变，考虑冻土的正交各向异性冻胀变形特征，即冻胀变形主要发生在沿热流方向(温度梯度方向)，引入变形特征系数的概念，从而导出土体温度降至冻结温度后而产生的瞬时热应变分量(冻胀应变分量)，并建立地层冻胀的弹塑性热力耦合数学模型。基于ABAQUS有限元软件的二次开发技术，编制冻土正交各向异性冻胀变形的用户子程序，从而提出隧道水平冻结期地层位移的热力耦合数值分析方法。将该方法应用于某浅埋大断面地铁隧道水平冻结工程中，获得地层冻结温度场和冻胀位移场的分布规律，并与现场实测结果相比较，验证数值分析方法的可靠性，同时表明地层位移分析中考虑冻土正交各向异性冻胀变形特征的必要性。

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关键词 ：隧道工程, 水平冻结, 冻胀变形, 正交各向异性, 二次开发, 数值分析

Abstract：A mathematical model describing the temperature field during tunnel construction with the method of horizontal freezing is presented considering various initial and boundary conditions such as ground temperature，surface convection and latent heat of phase change，etc. The heave rate of soil frosting was defined as the instantaneous volume strain and the deformation of frozen soil was considered orthotropic. The frost heave was assumed to occur mainly along the direction of heat flow(temperature gradient) and a coefficient to describe the deformation characteristic was introduced. The transient thermal strain components(frost heave strain components) were derived after the soil temperature reached the freezing temperature. A coupled thermal-stress elasto-plastic mathematical model for the frost heave of ground was presented. The model was implanted into the finite element software ABAQUS. A shallow subway tunnel of large section applying horizontal freezing was simulated numerically and the numerical results were compared with the field measured data，which verified the reliability of the numerical model and the necessity of considering the orthotropic frost heave deformation of frozen soil in the analysis of ground displacement.

Key words： tunnelling engineering horizontal freezing frost heave deformation orthotropic secondary development numerical analysis

引用本文:

蔡海兵1，程桦1，姚直书1，王翰2. 基于冻土正交各向异性冻胀变形的隧道冻结期地层位移数值分析[J]. 岩石力学与工程学报, 2015, 34(08): 1667-1676.
CAI Haibing1，CHENG Hua1，YAO Zhishu1，WANG Han2. NUMERICAL ANALYSIS OF GROUND DISPLACEMENT DUE TO ORTHOTROPIC FROST HEAVE OF FROZEN SOIL IN FREEZING PERIOD OF TUNNEL. , 2015, 34(08): 1667-1676.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2014.0514 或 http://www.rockmech.org/CN/Y2015/V34/I08/1667

[18]	姚直书，蔡海兵，程桦，等. 采用长距离水平冻结暗挖法的浅埋大断面地铁隧道施工技术[J]. 中国铁道科学，2011，32(1)：75-80. (YAO Zhishu，CAI Haibing，CHENG Hua，et al. Construction technique for the shallow-buried subway tunnel with large-section by long-distance horizontal ground freezing method and undermining method[J]. China Railway Science，2011，32(1)：75-80.(in Chinese)) " target="_blank">
[2]	岳丰田，仇培云，杨国祥，等. 复杂条件下隧道联络通道冻结施工设计与实践[J]. 岩土工程学报，2006，28(5)：660-663.(YUE Fengtian，QIU Peiyun，YANG Guoxiang，et al. Design and practice of freezing method applied to connection aisle in tunnel under complex conditions[J]. Chinese Journal of Geotechnical Engineering，2006，28(5)：660-663.(in Chinese))
[5]	KONRAD J M，SHEN M. 2-D frost action modeling using the segregation potential of soils[J]. Cold Regions Science and Technology，1996，24(3)：263-278. " target="_blank">
[6]	KONRAD J M. Prediction of freezing-induced movements for an underground construction project in Japan[J]. Canadian Geotechnical Journal，2002，39(6)：1 231-1 242. " target="_blank">
[9]	耿萍，晏启祥，何川，等. 隧道水平冻结施工过程的数值模拟[J]. 工程力学，2010，27(5)：122-127. (GENG Ping，YAN Qi-xiang，HE Chuan，et al. Numerical simulation of underground construction by horizontal ground freezing method[J]. Engineering Mechanics，2010，27(5)：122-127. (in Chinese))
[10]	刘波，李东阳，陈立，等. 复杂地层旁通道冻结施工过程的模拟与实测分析[J]. 中国安全生产科学技术，2010，6(5)：11-17.(LIU Bo，LI Dongyang，CHEN Li，et al. Numerical simulation and measurement of freezing method applied to connected aisle of subway tunnels under complex conditions[J]. Journal of Safety Science and Technology，2010，6(5)：11-17.(in Chinese)) " target="_blank">
[11]	KONRAD J M. Estimation of the segregation potential of finegrained soils using the frost heave response of two reference soils[J]. Canadian Geotechnical Journal，2005，42(1)：38-50. " target="_blank">
[13]	张茹，王正中，牟声远，等. 基于横观各向同性冻土的U形渠道冻胀数值模拟[J]. 应用基础与工程科学学报，2010，18(5)：773-783.(ZHANG Ru，WANG Zhengzhong，MU Shengyuan，et al. Numerical simulation of frost heaving for U canal based on transverse isotropy[J]. Journal of Basic Science and Engineering，2010，18(5)：773-783.(in Chinese)) " target="_blank">
[17]	中煤特殊凿井(集团)有限公司，安徽理工大学，安徽建筑工业学院. 广州地铁三号线天河客运站折返线隧道冻结工程施工总结报告[R]. 2006.(China Coal Special Drilling Engineering CO.，Ltd，Anhui University of Science and Technology，Anhui University of Architecture. Construction summary report of Tianhe station reentrant line tunnel freezing engineering in Guangzhou metro No.3 line[R]. 2006. " target="_blank">
[1]	周晓敏，王梦恕，陶龙光，等. 北京地铁隧道水平冻结和暗挖施工模型试验与实测研究[J]. 岩土工程学报，2003，25(6)：676-679. (ZHOU Xiaomin，WANG Mengshu，TANG Longguang，et al. Model test and prototype observation on artificial ground freezing and tunneling of Beijing subway[J]. Chinese Journal of Geotechnical Engineering，2003，25(6)：676-679.(in Chinese))
[3]	蔡海兵，程桦，彭立敏，等. 地铁双线隧道水平冻结位移场的模型试验[J]. 岩石力学与工程学报，2009，28(10)：2 088-2 095.(CAI Haibing，CHENG Hua，PENG Limin，et al. Model test on displacement field of double-route metro constructed with horizontal freezing method[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(10)：2 088-2 095.(in Chinese)) " target="_blank">
[4]	陈成，杨平，张婷，等. 长距离液氮冻结加固高承压富含水层温度实测研究[J]. 岩土工程学报，2012，34(1)：145-150.(CHEN Cheng，YANG Ping，ZHANG Ting，et al. Temperature measurements of long-distance liquid nitrogen freezing in high-confined aquifer reinforcement. Chinese Journal of Geotechnical Engineering，2012，34(1)：145-150.(in Chinese))
[7]	程桦，臧华. 人工地层水平冻结冻胀效应准耦合数值分析[J]. 岩土工程学报，2003，25(1)：87-90.(CHENG Hua，ZANG Hua. Quasi-coupling numeric analysis of frost heave effect of horizontal freezing in artificial ground[J]. Chinese Journal of Geotechnical Engineering，2003，25(1)：87-90.(in Chinese))
[8]	YANG P，KE J M，WANG J G，et al. Numerical simulation of frost heave with coupled water freezing，temperature and stress fields in tunnel excavation[J]. Computers and Geotechnics，2006，33(6-7)：330-340. " target="_blank">
[12]	LAI Y M，LIU S Y，WU Z W，et al. Approximate analytical solution for temperature fields in cold regions circular tunnels[J]. Cold Regions Science and Technology，2002，34(1)：43-49. " target="_blank">
[14]	廖红建，王铁行. 岩土工程数值分析[M]. 北京：机械工业出版社，2006：43-146.(LIAO Hongjian，WANG Tiexing. Numerical analysis of geotechnical engineering[M]. Beijing：China Machine Press，2006：143-146.(in Chinese)) " target="_blank">
[15]	HIBBITTE K，SORENSON. ABAQUS/Standard user?s manual[S]. U. S. A.：[s. n.]，2002. " target="_blank">
[16]	蔡海兵，彭立敏，郑腾龙. 隧道水平冻结施工引起地表冻胀的历时预测模型[J]. 岩土力学，2012，33(6)：1 761-1 768.(CAI Haibing，PENG Limin，ZHENG Tenglong. A duration prediction model of surface frost heave induced by tunnelling with horizontal freezing method[J]. Rock and Soil Mechanics，2012，33(6)：1 761-1 768.(in Chinese)) " target="_blank">
[19]	姜耀东，赵毅鑫，周罡，等. 广州地铁超长水平冻结多参量监测分析[J]. 岩土力学，2010，31(1)：158-164，173.(JIANG Yaodong，ZHAO Yixin，ZHOU Gang，et al. Multi-parameter monitoring of frozen soil structure with super-long freezing hole drilling in Guangzhou metro[J]. Rock and Soil Mechanics，2010，31(1)：158-164，173.(in Chinese)) " target="_blank">