Attenuation-Type and Failure-Type Curves of Cyclic Accumulated Deformation Models in Saturated Normal Consolidated Clay

Abstract:

Based on dynamic triaxial test results of saturated soft clay, influence factors and variations on accumulated deformation were analyzed. The Parr’s equation on accumulated deformation was modified to create an attenuation-type curve model on accumulated deformation of saturated normal consolidation clay. In this model, dynamic strength was introduced and a new parameter called equivalent dynamic stress level was added. Besides, based on comparative analysis on variations between failure-type and attenuation-type curves, a failure-type curve model was created on accumulated deformation of saturated normal consolidation clay. The two models can take cycle number, coupling of static and dynamic deviator stress, consolidation way into consideration. The models were verified by test results. The correlation coefficients are more than 0.96 for optimization of test results based on the two models, and there is good agreement between optimized and test curves, which show that the two models are suitable to predict variations of accumulated deformation under different loading cases and consolidation ways. In order to improve prediction accuracy, it is suggested that loading cases and consolidation ways should be consistent with in-situ conditions when dynamic triaxial tests being used to determine the constants in the models.

• Periodical: Applied Mechanics and Materials (Volumes 105-107)
• Pages: 1539-1546
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.105-107.1539
• Online since: September 2011
• Authors: Chun Yan Zhao, Guo Yong Zheng
• Keywords: Accumulated Deformation Model, Attenuation-Type Curve, Equivalent Dynamic Stress Level, Failure-Type Curve, Saturated Normal Consolidation Clay

References

[1] C.J. Wang, Y.M. Chen: Chinese Journal of Geotechnical Engineering, Vol 29 (2007) No.11, p.1743. (In Chinese)

[2] C. Madshus, A.M. Kaynia: Journal of Sound and Vibration, Vol 231 (2000) No.3, p.689.

[3] M.S. Huang, J.J. Li and X.Z. Li: Chinese Journal of Geotechnical Engineering, Vol 28 (2006) No.4, p.891. (In Chinese)

[4] A. AL Shaer, D. Duhamel, K. Sab, G. Foret and L. Schmitt: Journal of Sound and Vibration, Vol 316 (2008) No.1-5, p.211.

DOI: 10.1016/j.jsv.2008.02.055

[5] K. Yasuhara, K.H. Andersen: Soils and Foundations, Vol 31 (1991) No.1, p.83.

[6] M. Abdelkrim, G. Bonnet and P. Buhan: Computers and Geotechnics, Vol 30 (2003) No.6, p.463.

[7] C. Karg, W. Haegeman: Soils Dynamics and Earthquake Engineering, Vol 29 (2009) No.1, p.155.

[8] Y.M. Chen, X.C. Bian: The Seventh National Soil Dynamics Learning Session (Beijing, China, November11, 2006), p.3. (In Chinese)

[9] C.L. Monismith, N. Ogawa and C.R. Freeme: Transport Research Record, (1975) No.537, p.1.

[10] D. Li, E.T. Selig: Journal of Geotechnical Engineering, Vol 122 (1996) No.12, p.1006.

[11] J.C. Chai, N. Miura: Journal of Geotechnical and Geoenvironmental Engineering, Vol 128 (2002) No.11, p.907.

[12] M. Hyodo, K. Yasuhara and K. Hirao: Soils and Foundations, Vol 32 (1992) No.4, p.117.

[13] J. Zhou, H.Q. Tu and K. Yaswhara: Rock and Soil Mechanics, Vol 17 (1996) No.1, p.54. (In Chinese)

[14] A. Sakai, L. Samang and N. Miura: Japanese Geotechnical Society, Vol 43 (2003) No.1, p.33.

[15] S.R. Yi: Railway Engineering (China Railway Publishing House, China 2005). (In Chinese)

[16] G.B. Parr: Some Aspects of the Behavior of London Clay under Repeated Loading (Ph.D., University of Nottingham, England 1972), p.28.

[17] M. Liu, M.S. Huang and J.J. Li: Chinese Journal of Underground Space and Engineering, Vol 2 (2006) No.5, p.813. (In Chinese)

[18] Information on http:// www.paper. edu.cn. (In Chinese)

[19] C.Y. Liu: Soil mechanics (China Railway Publishing House, China 2005). (In Chinese)