Анализ устойчивости непол ностью водонасыщенных глинистых откосов методом конечных элементов Analysis of partially saturated clayey slopes using finite element method
Аннотация
Показано, что матричное всасывание, согласно уравнению Бишопа, может увеличивать эффективное напряжение частично водонасыщенных грунтов, вследствие действия отрицательного порового давления воды. Рассмотрены условия устойчивости склонов частично водонасыщенных грунтов с учетом влияния всасывания при различных уровнях водоносного горизонта. Рассматривается роль отрицательного давления поровой воды при анализе устойчивости склона. Приведена модель грунта, учитывающая колебания уровня грунтовых вод и отрицательное поровое давление.
Полный текст статьи опубликован в английской версии журнала
"Soil Mechanics and Foundation Engineering".
Литература
Al-Mahbashi, A. M., Elkady, T., and Alrefeai, T.O. (2015). “Soil water characteristic curve and improvement in lime treated expansive soil.” Geomechanics and Engineering, Vol. 8(5): 687-706.
Abaqus (2014). Abaqus Documentation, Version 6.14: Abaqus/CAE User’s Manual. SIMULIA, Corp., Providence, RI.
Chang, Y. L. and T. K. Huang. (2005). Slope stability analysis using strength reduction technique. Journal of the Chinese Institute of Engineers 28(2): 231-240.
Clough, R. W. and R. J. Woodward, III. (1967). Analysis of embankment embankment stresses and deformations. Journal of the Soil Mechanics and Foundations Division, ASCE, 93(SM4): 529-550.
Fredlund, D. G. and H. Rahardjo. (1993). Soil Mechanics for Unsaturated Soils. New York: Wiley and Sons.
Fredlund, D. G. (1998). Bring unsaturated soil mechanics into engineering practice. Second International Conference on Unsaturated Soil, August, Bejing, China: 31-35.
Gallage, C., J. Kodikara, and T. Uchimura. (2013). Laboratory measurement of hydraulic conductivity functions of two unsaturated sandy soils during drying and wetting processes. Soils and Foundations 53(3), Japanese Geotechnical Society: 417-430.
Griffiths, D. V. and P. A. Lane. (1999). Slope stability analysis by finite elements. Géotechnique 49(3): 387-403.
Ho, I. H. (2014). Parametric studies of slope stability analyses using three-dimensional finite element technique: Geometric effect. Journal of Geoengineering 9(1): 33-43.
Ho, I. H. (2015). Numerical study of slope-stabilizing piles in undrained clayey slopes with a weak thin layer. International Journal of Geomechanics 15(5), ASCE, 06014025-1-12.
Ho, I. H. (2017). Slope stability analysis considering soil suction using finite element method. Proceedings of the 19th ICSMGE conference, Seoul, Korea. 3493-3496.
Kim, J., S. Jeong, and R. Regueiro. (2012). Instability of partially saturated slopes due to alteration of rainfall pattern. Engineering Geology: 147-148, 28-36.
Li, X., Wen, H., Muhunthan, B., and Wang, J. (2015). "Modeling and Prediction of the Effects of Moisture on the Unconfined Compressive and Tensile Strength of Soils." J. Geotech. Geoenviron. Eng., 10.1061/(ASCE)GT.1943-5606.0001308, 04015028.
Lu, N., and W. Likos. (2004). Unsaturated Soil Mechanics. New York: Wiley and Sons.
Matsui, T. and K. C. San. (1992). Finite element slope stability analysis by shear strength reduction technique. Soils and Foundations 32(1): 59-70.
Nian, T. K., R. Q. Huang, S. S. Wan, and G. Q. Chen. (2012). Three-dimensional strength-reduction finite element analysis of slopes: Geometric effects. Canadian Geotechnical Journal 49(5): 574-588.
Rahardjo, H., A. Satyanaga, E. C. Leong, and N. Y. Song. (2010). Effects of groundwater table position and soil properties on stability of slope during rainfall. Journal of Geotechnical and Geoenvironmental Engineering 136(11), ASCE: 1555-1564.
Ray, R., Jacobs, J., and de Alba, P. (2010). "Impacts of Unsaturated Zone Soil Moisture and Groundwater Table on Slope Instability." J. Geotech. Geoenviron. Eng., 10.1061/(ASCE)GT.1943-5606.0000357, 1448-1458.
Stianson, J. R., D. G. Fredlund, and D. Chan. (2011). Three-dimensional slope stability based on stresses from a stress-deformation analysis. Canadian Geotechnical Journal 48(6): 891-904.
Stolle, D. and P. Guo. (2008). Limit equilibrium slope stability analysis using rigid finite elements. Canadian Geotechnical Journal 45: 653-662.
Sweeney, D. J. (1982). Some in situ soil suction measurements in Hong Kong’s residual soil slopes. Proceedings of 7th Southeast Asia Geotechnical Conference: 91-106.
van Genuchten, M. T. (1980). A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Science Society of America Journal 44: 892–898.
Van Genuchten, M. T., Leij, F. J., and Yates, S. R. (1991). “The RETC code for quantifying the hydraulic functions of unsaturated soils.” U.S. EPA Rep. 600/2–91/065, Ada, OK.
Zhang. Y., G. Chen, L. Zheng, Y. Li, and X. Zhuang. (2013). Effects of geometries on three-dimensional slope stability. Canadian Geotechnical Journal 50: 233-249.
Zienkiewicz, O. C., C. Humpheson, and R. W. Lewis. (1975) Associated and non-associated visco-plasticity and plasticity in soil mechanics. Géotechnique 25(4): 671-689.
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