Effect of Earthquake Induced In Lateral Soil Movement on Lateral Pile Resistance

International Journal of Computer Science (IJCS Journal) Published by SK Research Group of Companies (SKRGC) Scholarly Peer Reviewed Research Journals

Format: Volume 5, Issue 2, No 03, 2017

Copyright: All Rights Reserved ©2017

Year of Publication: 2017

Author: S.CHRISTOBER,Mr. TAMILVANAN

Reference:IJCS-315

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Abstract

The performance of piles in liquefying ground under earthquake loading is a complex problem due to the effects of a progressive buildup of pore water pressures in the saturated soils. The loss of soil strength and stiffness due to liquefaction may develop large bending moments and shear forces in piles, possibly leading to pile damage. The significance of liquefaction-related damage to pile foundations has been clearly demonstrated by the major earthquakes that have occurred during past years. The present investigation is to find out the effect of earthquake induced lateral soil movement on piles in sloping ground. The present study was carried out by numerically. In this, 1995 Kobe earthquake data (Japan) is used. Parametric study has been done on the same model by varying slope in the soil layers and L/D ratio of the pile. The dynamic analysis was carried out for slope angle of 1V:1.5H in with L/D=16, L/D=25 & L/D=33. In each case, bending moment and displacement variation with depth of the pile is noticed. Based on the study, it is concluded that for a constant slope and constant depth of liquefiable layer lateral displacement and bending moment is significantly increased for L/D=16 when compared to higher L/D ratio’s of 25 and 33. However, further increase in L/D ratio is not having any significant effect in the lateral displacement.

References

1) S.J., Boulanger, R.W., Kutter, B.L., and Chang, D. (2005). “Behavior of Piles in Laterally Spreading Ground during Centrifuge Tests”.

2) JGGE, ASCE, Vol. 131, pp. 1378-1391. Bray, J.D. and Travasarou, T. (2007). “Simplified Procedure for Estimating Earthquake-Induced Deviatoric Slope Displacements”.

3) Der Kiureghian, A. (2005). “Probability Concepts for Performance-Based Earthquake Engineering”. Symposium Honoring Luis Esteva, Mexico City. Duncan

4) J. M. (2000). “Factors of Safety and Reliability in Geotechnical Engineering”. J. of Geotech. and Geoenviron. Engrg., ASCE, Vol. 126, pp. 307-316. Eddy, M.A., and Gutierrez.

5) M.S. (2006). “Probabilistic Liquefied Shear Strength for Post-Liquefaction Analysis”. Proc., 8th U.S. Nat. Conf. on Earthquake Engrg., San Francisco, CA, Paper No. 1795.

6) Finn, W.D.L., Ledbetter, R.H., and Wu, G. (1997). “The Stabilization of the Upstream Slope of Sardis Dam Using Driven Prestressed Concrete Piles: Methods of Analysis”. Proc., 9th Inter. Conf. on Computer Methods and Adv. in Geomechanics, Wuhan, China, J.X. Yuan (Ed.), A.A. Balkema/Rotterdam/Brookfield, pp. 141-150.

7) Finn, W.D.L., Ledbetter, R.H., and Stacy, S.T. (1991). “Dam on Liquefiable Foundation: Safety Assessment and Remediation”. Proc., 17th Inter. Conf. on Large Dams, Vienna, pp. 531-553.


Keywords

Liquefaction, Large Lateral Flow, Pile Groups

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