Design of geotechnical engineering problems that involve 8%qHy1
dynamic loading of soils and soil–structure interaction _%` )cOr
systems requires the determination of two important j`GL#J[wqQ
parameters, the shear modulus and the damping Ydw04WEJ
of the soils. The recent developments in the numerical zCZ]`
analyses for the nonlinear dynamic responses of grounds _ <`j?$P
due to strong earthquake motions have increased the D l2`b">u
demand for the dynamic soil properties corresponding [YQVZBT|{
to large strain level also. Further, the most common cause 2`XG"[@
of ground failure during earthquakes is the liquefaction O(~74:#*
phenomenon which has produced severe damage all s3sAw~++
over the world. This paper summarizes the methods of +5|wd6
determining the dynamic properties as well as potential 06FBI?;|=
for liquefaction of soils. Parameters affecting the dynamic IXaF(2>
properties and liquefaction have been brought out. aB6F<"L,
A simple procedure of obtaining the dynamic properties MY]Z@
of layered ground has been highlighted. Results of a )zzK\I6/EQ
series of cyclic triaxial tests on liquefiable sands collected a&3pPfC
from the sites close to the Sabarmati river belt have been hP1H/=~
presented.
