Soil spring stiffness
Soil spring stiffness
(OP)
Hi
I’m a structural engineer. I model an integral abutment bridge in ADINA software. For the interaction between the backfill and the abutment, I use a soil spring model. The stiffness of the spring is equal to lateral stiffness of backfill (granular soil). Does any body know how to calculate the spring stiffness, and how does it change with temperature varying from -25 C to 30 C.
Or please recommend me some papers and books about that problem.
Thank
I’m a structural engineer. I model an integral abutment bridge in ADINA software. For the interaction between the backfill and the abutment, I use a soil spring model. The stiffness of the spring is equal to lateral stiffness of backfill (granular soil). Does any body know how to calculate the spring stiffness, and how does it change with temperature varying from -25 C to 30 C.
Or please recommend me some papers and books about that problem.
Thank





RE: Soil spring stiffness
Wilson's paper on Abutment stiffness of skewed bridges,
FHWA's Seismic Design of Highway Bridges 1987,
Papers by Gazetas will help on soil springs in general and
FHWA's geotechnical seismic design of foundations by Earthtech.
The latter has an extensive treatment for foundations on piling and spread footings.
The 1987 FHWA reference has a nice section on the practical non-linear treatment of the soil springs and when the soil yields as well as closing the gap at the abutment-superstructure.
Good Luck.
Regards,

Qshake
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RE: Soil spring stiffness