黏土不排水条件下浅埋隧道稳定性上限有限元分析

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Abstract The investigation of stability and failure mechanism of shallow-buried tunnel in undrained clay has important significance to tunnel design，construction and theoretical progress. Based on the existing finite element upper bound theory，the triangular elements with constant strain rate was adopted to discrete computational domain，and the velocity discontinuities were set up on all the adjacent borders of the triangular elements，while the Mohr-Coulomb criterion was linearized using circumscribing polygon to form a linear programming model. Then，a computer program using Matlab for finite element upper bound solution was compiled. The more accurate results of stability factors of shallow-buried tunnel in undrained clay ground were obtained by using the computer program of finite element upper bound solution with discretization of computational domain of finite element mesh. And the reliability of the obtained results was verified by comparing with the existing data in literature. The characteristic of the failure mechanism during occurrence of plastic flow was analyzed，and the influential factors of tunnel stability factor were discussed. The regulation of failure mechanism evolution for different parameters was also summarized.

Key words： tunnelling engineering shallow-buried tunnel stability finite element limit analysis upper bound solution failure mechanism

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	YANG Feng
	YANG Junsheng
	ZHANG Xuemin
	ZHAO Lianheng

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YANG Feng,YANG Junsheng,ZHANG Xuemin, et al. FINITE ELEMENT ANALYSIS OF UPPER BOUND SOLUTION OF SHALLOW-BURIED TUNNEL STABILITY IN UNDRAINED CLAY[J]. , 2010, 29(S2): 3952-3959.

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https://rockmech.whrsm.ac.cn/EN/Y2010/V29/IS2/3952

[1] CHEN W F. Limit analysis and soil mechanics[M]. New York：Elsevier Scientific Publishing Company，1975.

[2] DONALD I，CHEN Z Y. Slope stability analysis by the upper bound approach：fundamentals and methods[J]. Canadian Geotechnical Journal，1997，34(6)：853–862.

[3] 陈祖煜. 土力学经典问题的极限分析上、下限解[J]. 岩土工程学报，2002，24(1)：1–11.(CHEN Zuyu. Limit analysis for the classic problems of soil mechanics[J]. Chinese Journal of Geotechnical Engineering，2002，24(1)：1–11.(in Chinese))

[4] 陈祖煜. 土质边坡稳定分析——原理·方法·程序[M]. 北京：中国水利水电出版社，2003.(CHEN Zuyu. Soil slope stability analysis—theory，methods and program[M]. Beijing：China Water Power Press，2003.(in Chinese))

[5] DAVIS E H，GUNN M J，MAIR R J，et al. The stability of shallow buried tunnel s and underground openings in cohesive material[J]. Géotechnique，1980，30(4)：397–416.

[6] OSMAN A S，MAIR R J，BOLTON M D. On the kinematics of 2D tunnel collapse in undrained clay[J]. Géotechnique，2006，56(9)：585–595.

[7] KLAR A，OAMAN A S，BOLTON M. 2D and 3D upper bound solutions for tunnel excavation using “elastic” flow fields[J]. International Journal for Numerical and Analytical Methods in Geomechanics，2007，31(12)：1 367–1 374

[8] VERRUIJT A，BOOKER J R. Surface settlements due to deformation of a tunnel in an elastic half plane[J]. Géotechnique，1996，46(4)：753–756

[9] 谢骏，刘纯贵，于海勇. 双平行圆形隧道稳定的塑性极限分析上限解[J]. 岩石力学与工程学报，2006，25(9)：1 835–1 841.(XIE Jun，LIU Chungui，YU Haiyong. Upper bound solutions of plastic limit analysis for the stability of two parallel circular tunnels[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(9)：1 835– 1 841.(in Chinese))

[10] 杨峰，阳军生. 浅埋隧道围岩压力确定的极限分析方法[J]. 工程力学，2008，25(7)：179–184.(YANG Feng，YANG Junsheng. Limit analysis method for determination of earth pressure on shallow buried tunnel[J]. Engineering Mechanics，2008，25(7)：179–184.(in Chinese))

[11] SLOAN S W. Upper bound limit analysis using linen finite elements and linear programming[J]. International Journal for Nummerical and Analytical Methods in Geomechanics，1989，13：263–282.

[12] SLOAN S W，KLEEMAN P W. Upper bound limit analysis using discontinuous velocity fields[J]. Computer Methods in Applied Mechanics and Engineering，1995，127(1–4)：293–314.

[13] 姜功良. 浅埋软土隧道稳定性极限分析[J]. 土木工程学报，1998，31(5)：65–71.(JIANG Gongliang. Shallow buried tunnel stability limit analysis in soft soil ground[J]. Chinese Journal of Civil Engineering，1998，31(5)：65–71.(in Chinese))

[14] SLOAN S W，ASSADI A. Undrained stability of a square tunnel in a soil whose strength increases linearly with depth[J]. Computer and Geotechnics，1991，12(4)：321–346.

[15] WILSON D W，ABBO A J，SLOAN S W，et al. Undrained stability of dual square tunnels[C]// Proceedings of the 12th International Conference of International Association for Computer Methods and Advances in Geomechanics. Goa：[s. n.]，2008：4 284–4 291.

[16] BROMS B B，BENNERMARK H. Stability of clay at vertical openings[J]. Journal of the Soil Mechanics and Foundations Division，1967，93：71–94.