期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2013
期号：NCRACE
页码：47
出版社：S&S Publications
摘要：Determination of dynamic soil propertiesis a critical task but an extremely important aspect ingeotechnical earthquake engineering problems.Dynamic soil properties include shear modulus,modulus reduction and damping variations withcyclic strains. Field evaluation of dynamic soilproperties predominantly aids in the estimation of theshear modulus/shear wave velocity at low strain level.Laboratory based evaluations helps in the estimationof a realistic range of dynamic soil properties (e.g.experiments carried out in a specific strain-controlledenvironment) at varying strain levels. Factually, thecyclic triaxial method has been the most widely usedto measure the strength, deformation and dynamiccharacteristics of soils. Such experiments can alsohelp to simulate and comprehend the liquefactioncharacteristics and evaluate the liquefaction potentialof the concerned medium. Various parameters like:relative density, confining pressure, soil plasticity,strain amplitude, frequency and magnitude of cyclicloading influence dynamic soil properties. This paperpresents a review on the dynamic soil properties andtheir influencing parameters. Earlier studies ondynamic soil properties are presented systematicallyto highlight the importance of the each influencingparameter. Subjected to similar testing conditions, asignificant difference in the dynamic soil propertiesfor characteristically different soils have beenobserved by earlier researchers. It has been observedthat the dynamic soil properties are affected by manyfactors like: method of sample preparation in thelaboratory (whether intact and reconstitutedsamples), relative density, confining pressure,methods of loading, overconsolidation ratio, loadingfrequency, soil plasticity, percentage of fines and soiltype.
