Лабораторные исследования деформационных и прочностных характеристик засоленных мерзлых пылевато-песчаных грунтов

Кай Ху, Сяоцин Чэнь, Йанган Чэнь

Аннотация


Проведены экспериментальные исследования по изучению влияния засоленности Na2SO4 и всестороннего давления на деформационные и прочностные характеристики мерзлых пылеватых песков при 6°С. Показано, что начальный модуль упругости слабо зависит от всестороннего давления и возрастает с увеличением содержания соли. Увеличение всестороннего давления приводит к росту прочности. С ростом засоленности сцепление мерзлого грунта сначала увеличивается, а затем уменьшается, в то время как угол внутреннего трения и общая прочность сначала уменьшается, а затем увеличивается.


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Литература


Bragg R.A. and Andersland O.B. Strain rate, temperature, and sample size effects on compression and tensile properties of frozen sand, Eng. Geol. - 1981. - No 18. - Pp. 35-46.

Goughnour R.R and Andersland O.B. Mechanical properties of a sandice system // Am. Soc. Civil Eng. J. Soil. Mech. - 1968.

Andersland O.B. and Ainouri I. Timedependent strength behavior of frozen soils // Journal of the Soil mechanics and Foundation Division. - 1970. - No 96. - Pp. 1249-1265.

Zhu Y.L., Zhang J.Y. and Peng W.W. Constitutive relations of frozen soil in uniaxial compression // J. Glaciol. Geocryol. - 1992. - No 34. - Pp. 657-663.

Ma W., Wu Z.W., Chang X.X. and Wang J. Analysis of microstructural changes in frozen sandy soil under confining pressures using scanning electronic microscope // J. Glaciol. Geocryol. - 1995. - No 17. - Pp. 152-158.

Li H.P., Zhu Y.L., Zhang J.B. and Lin C. Effects of temperature, strain rate and dry density on compressive strength of saturated frozen clay // Cold Regions Sci. Technol. - 2004. - No 39. - Pp. 39-45.

Wang D.Y., Ma W., Chang X.X. and Wang A. Study on the resistance to deformation of artificially frozen soil in deep alluvium // Cold Regions Sci. Technol. - 2005. - No 42. - Pp. 194-200.

Tang G.Z. and Wang X.H. Effect of temperature control on a tunnel in permafrost // TunnellingUndergr. Space Technol. - No 22. - Pp. 483-488.

Qi J.L. and Ma W. A new criterion for strength of frozen sand under quick triaxial compression considering effect of confining pressure // ActaGeotechnica. - 2007. - No 2. - Pp. 221-226.

Lai Y.M., Li S.Y., Qi J.L., Gao Z.H. and Chang X. Strength distributions of warm frozen clay and its stochastic damage constitutive model // Cold Regions Sci. Technol. - 2008. - No 53. - Pp. 200-215.

Shoop S., Affleck R., Haehnel R. and Janoo V. Mechanical behavior modeling of thawweakened soil // Cold Regions Sci. Technol. - 2008. - No 52. - Pp. 191-206.

Ogata N., Yasuda M. and Kataoka T. Effects of salt concentration on strength and creep behavior of artificially frozen soils // Cold Regions Sci. Technol. - 1983. - No 8. - Pp. 139-153.

Pharr G.M. and Godavarti P.S. A comparison of the creep behavior of saline ice and frozen saline Ottawa sand at 8°C // Cold Regions Sci. Technol. - No 14. - Pp. 273-279.

Brouchkov A. Frozen saline soil of the Arctic coast: their distribution and engineering properties // Proceedings of the Eighth International Conference on Permafrost, Zurich, Switzerland, 7. - 2003. - Pp. 95-100.

Bing H . and He P. Influence of freethaw cycles on physical and mechanical properties of salty soil // J. Geotech. Eng. -

- No 31. - Pp. 1958-1962.

Wang C.L., Xie Q., Jiang C.X. and Hu Q. Analysis of thermal characteristics and mechanical properties of salty soil in frozen area of QinghaiTibet railway // Rock and Soil Mechanics. - 2009. - No 30. - Pp. 836-839.

Nixon J.F. and Lem G. Creep and strength testing of frozen saline finegrained soils // Can. Geotech.J., 21. - 1984. - Pp. 518-529.

Hivon E.G. and Sego D.C. Strength of frozen saline soils // Can. Geotech. J. - 1995. - No 32. - Pp. 336-354.

Bing H. and Ma W. Experimental study of freezing point of saline soil // J. Glaciol.Geocryol. - 2011. - No 33. - Pp. 1106-1113.

Deng Y.S., Pu Y.B. and Zhou C.L. Experimental study of structure change of saline soils due to freezing // J. Glaciol.Geocryol. - 2008. - No 30. - Pp. 632-640.

Yang C.S., He P., Cheng G.D. and Bing H. Uniaxial compressive strength of frozen saline silty clay // Eng. Mech. 2006. - No 23. - Pp. 144-148.

Yang C.S., He P., Cheng G.D., Zhao S. and Deng Y.S. Study of stressstrain relationships and strength characteristics of saturated saline frozen silty clay // Rock and Soil Mechanics. 2008. - No 29. - Pp. 3282-3286.

Chen J., Li D.Q., Bing H. et al. The experimental study on the uniaxial compressive strength of frozen silt with different salt content // Engineering Mechanics. - 2013. - No 30. - Pp. 18-23.

Chamberlain E., Groves C. and Perham R. The mechanical behavior of frozen earth materials under high pressure triaxial test conditions // Geotechnique. - 1972. - No 22. - Pp. 469-483.

Fish A.M. Strength of frozen soil under a combined stress state // Proceedings of the Sixth International Symposium on Ground Freezing, Beijing, China. - 1991. - No 1. - Pp. 135-145.

Ma W., Wu Z.W., Zhang L.X. and Chang X. Analyses of process on the strength decrease in frozen soils under high confining pressures // Cold Regions Sci. Technol. - 1999. - No 29. - Pp. 1-7.

Parameswaran V.R. and Jones S.J. Triaxial testing of frozen sand // J. Glaciology. - 1981. - No 27. - Pp. 147-155.

Lai Y.M., Cheng H.B., Gao Z.H., Zhang S. and Chang X. Stressstrain relationships and nonlinear Mohr strength criterion of frozen sand clay // Rock Mech. Rock Eng. - 2007. - No 26. - Pp. 1612-1617.

Xu X.T., Lai Y.M., Dong Y.H. and Qi J. Laboratory investigation on strength and deformation characteristics of icesaturated frozen sandy soil // Cold Regions Sci. Technol. 2011. - No 69. - Pp. 98-104.

Sun X.L., Wang R., Hu M.J. and Hu J.H. Triaxial strength and deformation properties of frozen silty clay under confining pressure // Rock and Soil Mechanics. - 2005. - No 26. - Pp. 1623-1627.

Asghari E., Toll D.G. and Haeri S.M. Triaxial behavior of a cemented gravely sand, Tehran alluvium // Geotech.Geol. Eng., No 21. - Pp. 1-28 (2003).

Mohamedzein E.A. and Aboud M.H. "Compressibility and shear strength of a residual soil," Geotech. Geol. Eng. - 2006. - No 24. - Pp. 1385-1401.

Estabragh A.R. and Javadi A.A. Shear strength behavior of unsaturated silty soil // In Experimental unsaturated soil mechanics / Springer Berlin Heidelberg. - 2007. - Pp. 153-159.

Estabragh A.R. and Javadi A.A. Shear strength behavior of unsaturated silty soil // In Experimental unsaturated soil mechanics / Springer Berlin Heidelberg. - 2007. - Pp. 153-159.

De S. and Basudhar P.K. Steady state strength behavior of Yamuna sand // Geotech. Geol. Eng. - 2008. - No 26. - Pp. 237-250.

Erzin Y. and Yilmaz I. A case study of crushing resistance of Anatolian sands at lower and higher density // Bull. Eng. Geol. Environ. - 2008. - No 67. - Pp. 71-77.

Wan X.S., Lai Y.M. and Wang C. Experimental study on the freezing temperatures of saline silty soils // Permafrost Periglac.Process. - 2015. - No 26. - Pp. 175-187.

Liu Z.L., Li H.S. and Zhu Y.L. Damage characteristics and microcrack damage of frozen soil under uniaxial compression // Journal of Dalian. - 2002. - No 42. - Pp. 223-227.


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