Design of geotechnical engineering problems that involve IP3%'2}-
dynamic loading of soils and soil–structure interaction p ipO ,n
systems requires the determination of two important c( 5r
parameters, the shear modulus and the damping +D&aE$ <
of the soils. The recent developments in the numerical fBZ AO
analyses for the nonlinear dynamic responses of grounds t.YY?5 l
due to strong earthquake motions have increased the i{. %4tA4
demand for the dynamic soil properties corresponding `:y {
to large strain level also. Further, the most common cause Qe,aIh
of ground failure during earthquakes is the liquefaction _Vl22'wl
phenomenon which has produced severe damage all ~wl 4
over the world. This paper summarizes the methods of WY3D.z-</
determining the dynamic properties as well as potential mYRW/8+g
for liquefaction of soils. Parameters affecting the dynamic s+RSAyU
properties and liquefaction have been brought out. +PfXc?VU
A simple procedure of obtaining the dynamic properties M+lj g&fy
of layered ground has been highlighted. Results of a I%qZMoS1h
series of cyclic triaxial tests on liquefiable sands collected f 3t&Bcw$
from the sites close to the Sabarmati river belt have been Kp.d#W_TX
presented.
