Browse > Article
http://dx.doi.org/10.7843/kgs.2008.24.3.35

Development of Modified Disturbed State Concept Model for Liquefaction Analysis  

Park, Keun-Bo (School of Civil & Env. Eng., Yonsei Univ.)
Choi, Jae-Soon (Dept. of Civil Eng., Seokyeong Univ.)
Park, Inn-Joon (Dept. of Civil Eng., Hanseo Univ.)
Kim, Ki-Poong (School of Civil & Env. Eng., Yonsei Univ.)
Kim, Soo-Il (School of Civil & Env. Eng., Yonsei Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.24, no.3, 2008 , pp. 35-51 More about this Journal
Abstract
In this paper, the application of the DSC model to the analysis of liquefaction potential is examined through experimental and analytical investigations. For more realistic description of dynamic responses of saturated sands, the DSC model was modified based on the dynamic effective stress path and excess pore pressure development. Both static and cyclic undrained triaxial tests were performed for sands with different relative densities and confining stresses. Based on test results, a classification of liquefaction phases in terms of the dynamic effective stress path and the excess pore pressure development was proposed and adopted into the modified DSC model. The proposed methods using the original and modified DSC models were compared with examples with different relative densities and confining stresses. Based on the comparisons between the predicted results using the original and modified DSC models and experimental data, the parameters required to define the model were simplified. It was also found that modified model more accurately simulate initial liquefaction and dynamic responses of soil under cyclic undrained triaxial tests.
Keywords
Disturbance; Disturbed state concept; Earthquakes; Excess pore pressure; Liquefaction;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Desai, C.S. and Toth, J. (1996), 'Disturbed state constitutive modeling based on stress-strain and nondestructive behavior', International Journal of Solids and Structure, 33(11), 1619-1650   DOI   ScienceOn
2 Desai, C.S. and Rigby, D.B. (1997), 'Cyclic interface and joint shear device including pore water pressure effects', Journal of Geotechnical and Geoenvironmental Engineering, 123(6), 568-579   DOI   ScienceOn
3 Desai, C.S., Sharma, K.G., Wathugala, G.W. and Rigby, D.B. (1991), 'Implementation of hierarchical single surface $\delta_0$ and $\delta_1$ models in finite element procedure', International Journal of Numerical and Analytical Methods in Geomech, 15, 649-680   DOI
4 Katti, D.R. and Desai, C.S. (1994), 'Modeling and testing of cohesive soil using the disturbed state concept', Journal of Engineering Mechanics, ASCE, 121(1), 43-56
5 Pal, S. and Wathugala, G.W. (1999), 'Disturbed state model for sand-geosynthetic interfaces and application to pull-out tests', International Journal of Numerical and Analytical Methods in Geomech, 23(15), 1873-1892   DOI   ScienceOn
6 Vade, Y.P. and Chern, J.C. (1983), 'Effect of static shear on resistance of liquefaction', Soil and Foundation, 23(1), 47-60   DOI
7 Youd, T.L., Idriss, I.M., Andrus, R.D., Arango, I., Castro, G., Christian, J.T., Dobry, R., Finn, W.D.L., Harder, L.F., Hynes, M.E., Ishihara, K., Koester, J.P., Liao, S.S.C., Marcuson III, W.F., Martin, G.R., Mitchell, J.K., Moriwaki, Y., Power, M.S., Robertson, P.K., Seed, R.B., Stokoe II, K.H. (2001), 'Liquefaction resistance of soils: Summary report from the 1996 NCEER and 1998 NCEER/NSF workshops on evaluation of liquefaction resistance of Soils', Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 127(10), 817-833   DOI   ScienceOn
8 Desai, C.S. (1980), 'A general basis for yield, failure and potential functions in plasticity', International Journal of Numerical and Analytical Methods in Geomech, 4, 361-375   DOI   ScienceOn
9 Ladd, R.S. (1978), 'Preparing test specimens using undercompaction', Geotechnical Testing Journal, GTJODJ, 1(1), 16-23   DOI
10 Iai, S., Matsunaga, Y. and Kameoka, T. (1992), 'Strain space plasticity model for cyclic mobility', International Journal of Japan Society of Soil Mechanics and Foundation Engineering, 32(2), 1-15
11 Roscoe, K.H., Scofield, A. and Wroth, C.P. (1958), 'On yielding of soils', Geotechnique, 8, 22-53
12 Finn, W.D.L., Lee, K.W. and Martin, G.R. (1977), 'An effective stress model for liquefaction', Journal of Geotechnical Engineering Division, ASCE, 103(6), 517-533
13 Drucker, D.C. and Prager, W. (1952), 'Soil mechanics and plastic analysis or limit design', The Quarterly Journal of Mechanics and Applied Math, 10(2), 157-165
14 Seed, H.B., Idriss, I.M. and Arango, I. (1983), 'Evaluation of liquefaction potential using field performance data', Journal of Geotechnical Engineering Division, ASCE, 109(3), 458-482   DOI
15 Desai, C.S., Park, I.J. and Shao, C. (1998), 'Fundamental yet simplified model for liquefaction instability', International Journal of Numerical and Analytical Methods in Geomech, 22(7), 721-748   DOI   ScienceOn
16 Desai, C.S. and Ma, Y. (1992), 'Modeling of joints and interfaces using the disturbed state concept', International Journal of Numerical and Analytical Methods in Geomech, 16, 623-653   DOI
17 Desai, C.S., Basaran, C. and Zhang, W. (1997), 'Numerical algorithms and mesh dependence in the disturbed state concept', International Journal of Numerical Method in Engineering, 40, 3059-3083