2005•Journal of Hydraulic EngineeringRequires access

Some problems in determining dynamic characteristics of natural foundation soils

Qiwang Liu

Abstract

A review on advancement of research on dynamic characteristics of natural foundation soils is given.The problems to be discussed are:1.soil fabric and its effect on dynamic characteristics of soil;2.the maximum dynamic shear modulus and its determination;3.the dynamic shear modulus of soil under non-elastic deformation and its determination;4.the damping ratio of soil and its determination;5.the dynamic strength and liquefaction characteristics of soil.It is concluded that,due to the structure effect of soil,the combined measurement of laboratory experiment and in-situ test is the best way in determining the dynamic characteristics of natural foundation soil.

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Key concepts: Geotechnical engineering, Foundation (evidence), Shear modulus, Soil water, Damping ratio, Natural frequency, Liquefaction, Dynamic testing