DBPapers
DOI: 10.5593/SGEM2014/B12/S2.068

INFLUENCE OF SAND PHYSICAL PARAMETERS ON LIQUEFACTION PHENOMENON

N. Alexandru, P. Adrian,C. V. Rosu,M. S. Serbulea
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-08-7 / ISSN 1314-2704, June 19-25, 2014, Book 1, Vol. 2, 535-542 pp

ABSTRACT
The term “spontaneous liquefaction” was first used by Terzaghi in 1948 to indicate sudden loss of bearing capacity in young saturated sand deposits, caused primarily by small amplitude earthquake vibrations. Total loss of bearing capacity for a foundation soil is a very important aspect, which has to be taken into account when dealing with a dynamic analysis. Along a period of 3 decades, the procedures for determining the liquefaction potential have evolved significantly, since the the basic approach of Seed and Idriss. The article aims to present a laboratory study on two different types of sand, having the maximum loose particle arrangement obtained, with the aim of establishing a link between the secant modulus of deformation Ed and three other load related parameters:confining pressure σ3, force amplitude and frequency, in order to define sand liquefaction.

Keywords: Liquefaction, uncohesiv, triaxial