Design of geotechnical engineering problems that involve GQY"
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dynamic loading of soils and soil–structure interaction fx(8 o+
systems requires the determination of two important
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parameters, the shear modulus and the damping X=)L$Kd7
of the soils. The recent developments in the numerical l9=Ka{$^*
analyses for the nonlinear dynamic responses of grounds *<:X3|3E
due to strong earthquake motions have increased the ;w"h n*
demand for the dynamic soil properties corresponding y'odn ;
to large strain level also. Further, the most common cause 3!gz^[!?EN
of ground failure during earthquakes is the liquefaction __QnzEF
phenomenon which has produced severe damage all gL&w:_
over the world. This paper summarizes the methods of 6V1oZ-:}
determining the dynamic properties as well as potential Tc||96%2^
for liquefaction of soils. Parameters affecting the dynamic Cy6!?Mik
properties and liquefaction have been brought out. vnQFq
A simple procedure of obtaining the dynamic properties w`f66*@Q1
of layered ground has been highlighted. Results of a )z@
+|A
series of cyclic triaxial tests on liquefiable sands collected mH ju$d
from the sites close to the Sabarmati river belt have been uKM` umE
presented.
