State Of Art Review - Base Isolation Systems For Structures

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State Of Art Review - Base Isolation Systems For Structures

S.J.Patil1, G.R.Reddy2
1Heavy Water Board, Mumbai, India .
2Bhabha Atomic Research Centre, Mumbai, India

Abstract — This paper presents an overview of the present
state of base isolation techniques with special emphasis and a
brief on other techniques developed world over for mitigating
earthquake forces on the structures. The dynamic analysis
procedure for isolated structures is briefly explained. The
provisions of FEMA 450 for base isolated structures are
highlighted. The effects of base isolation on structures located
on soft soils and near active faults are given in brief. Simple
case study on natural base isolation using naturally available
soils is presented. Also, the future areas of research are
indicated.
Keywords—State of Art, base isolation, modulus reduction,
FEMA 450, isolated footing, raft footing.

 

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