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Author(s):

Dipak H. Vaidya | Mr. Girish Savai
Keywords:

Soil Structure Interaction, Flexibility, Kinematic Interaction
Abstract:
Soil Structure Interaction (SSI) Is The Response Of Soil That Influence The Motion Of The Structure. Soil Structure Interaction Is Prominent For Heavy Structure, Especially For High Rise Building Located On Soft Soil. Incorporation Of Soil Interaction Effect Will Reduce The Base Shear And Flexibility Of Soil. Because Of This The Stiffness Of The Building Is Getting Reduced Resulting, Increase In The Natural Period Of The Structure During Earthquake. One Cause Of These Deviations Is Base-slab Averaging, In Which Spatially Variable Ground Motions Within The Building Envelope Are Averaged Within The Foundation Footprint Due To The Stiffness And Strength Of The Foundation System. Another Cause Of Deviation Is Embedment Effects, In Which Foundation-level Motions Are Reduced As A Result Of Ground Motion Reduction With Depth Below The Free Surface. Interaction Of Pile Foundation With Wave Propagation Below The Base Slab, Which Can Further Modify Foundation-level Motions At The Base Of A Structure.

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