engleski

NUMERICAL MODEL FOR DYNAMIC ANALYSIS OF STRUCTURES WITH SEISMIC BASE ISOLATION USING A LAYER OF STONE PEBBLES

This paper presents a numerical model for the dynamic analysis of planar structures with seismic base isolation using a layer of stone pebbles. Following a brief presentation of the previously developed numerical model for structural analysis, the developed constitutive model for the stone pebble layer and the constitutive model for simulating the foundation-isolation layer coupling surface are presented. The model is based on a relatively small number of parameters, some of which were determined experimentally. The numerical model was verified by simulating the performed shake- table tests of simple structural models based on an aseismic layer of stone pebbles, and good agreement between the experimental and numerical results was observed. Finally, further verification and improvement of the presented constitutive models are outlined.

seismic base isolation ; stone pebble layer ; numerical model ; constitutive model

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