Design of geotechnical engineering problems that involve }[*BC5{>
dynamic loading of soils and soil–structure interaction _,; |,
systems requires the determination of two important 3xGk@ 3 33
parameters, the shear modulus and the damping q!+m,
!M
of the soils. The recent developments in the numerical rZv5>aEI
analyses for the nonlinear dynamic responses of grounds cA{zyq26
due to strong earthquake motions have increased the 'X(G><R9
demand for the dynamic soil properties corresponding geRD2`3;
to large strain level also. Further, the most common cause OTe0[p6v
of ground failure during earthquakes is the liquefaction []rg'9B2b
phenomenon which has produced severe damage all 6 P KH%
over the world. This paper summarizes the methods of i@}/KT
determining the dynamic properties as well as potential 5%n
for liquefaction of soils. Parameters affecting the dynamic
W{2(f b
properties and liquefaction have been brought out. i0-zGEMB.
A simple procedure of obtaining the dynamic properties 8_@#5
of layered ground has been highlighted. Results of a -h<Rby
series of cyclic triaxial tests on liquefiable sands collected vo_m$ /O
from the sites close to the Sabarmati river belt have been #(G #O1+
presented.
