Effects of Soil-Structure Interaction on the Seismic Response of Existing R.C. Frame

[paitaconst]

It is known that flexibility of foundation usually is accompanied with lengthening of the fundamental period of soil-structure system and an increase in the damping. Using typical code spectra, this may lead always to a reduction in the spectral acceleration and consequently, lower seismic demands for the superstructure. As recent findings have revealed, this may not be the case for some soil sites and under some specific earthquakes with particular properties (like particular frequency content).The objectives of this dissertation are to investigate the overall response of existing and retrofitted buildings modelled on flexible foundation, and hence to evaluate the soil structure interaction effects on the structural response albeit through the use of relatively simple soil models.

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[Grunf]

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Regards,
G