Jancy, F and Amirtham, Rajagopal and B, Umashankar and M R, Madhav
(2011)
Finite Element Modeling of Ground - Structure Interaction
Considering Non-Linear Response of the Ground.
In: Proceedings of Indian Geotechnical Conference, 15-17, December 2011, Kochi.
Abstract
Response of the ground on which
the structure rests will have a bearing
on the distribution of forces in the
structural members. Conventional method
s of structural analysis and design a
ssume often fixed bases for various loading
conditions. A realistic analysis and
design procedure should includ
e actual support flexibility, no
nlinear and heterogeneous
nature of the soil together
with nonlinear soil-structure in
teraction effects. Such an
analysis would resu
lt in overall stiffne
ss
of the soil-foundation-structure system
, realistic to the existing conditions. This
work focuses on
the computational
modeling of ground-structure interaction usi
ng finite element package ANSYS. To
demonstrate the behavior of structure
while considering actual nature of ground response
, a simple portal frame is analyzed. Portal frame is modeled as linear
elastic, whereas the ground is modeled as both linear elastic and
non-linear elastic-plastic behavior. The study gives insight
into variation of displacement of portal frame while considering linear and non-linear behavior of ground.
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