الفهرس 
TYPES OF BASE ISOLATION SYSTEMOnly 14 pages are availabe for public view
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Abstract
Seismic isolation has become a common strategy for earthquake
resistance to protect buildings from damage. This thesis is focused
mainly on seismically base isolated behavior of the plan reinforced
concrete frames with different number of stories under the action of
equivalent earthquake static loads given by the international codes and
the dynamic action of earthquake time history. Two major
aspects characterize the analysis; the effect of different base isolation
properties on the resulted straining actions and displacements; and an
investigation of the effectiveness of the base isolation through a
comparison between fixed base frames with base isolated frames. The
isolation bearings were simply modeled as bilinear hysteric elements.
For static analysis, the results of Euro code were compared with those
obtained from the International Building Code. The non linear dynamic
analysis under the action of three different artificial earthquakes used to
compare seismic response of fixed base and base isolated
concrete frames. It includes effect of isolation on displacement
& acceleration at top floor, inter-story drift, max.-drift, base shear and
energy dissipation.