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The feasibility of using friction pendulum bearings(FPS)
combined with the enhanced energy dissipation device system
which consists of linear fluid dampers and relatively rigid
linking numbers with leverage for seismic isolation of bridges
is proposed in the present studies. Accordingly, an algorithm
referred to as the〝multi-support shear balance method〞is used
for the nonlinear dynamic analysis of bridges isolated with
multiple sliding bearing. The dynamic responses of bridges with
/ without this systems, subject to strong ground motions, are
computed numerically. The EL Centro earthquake, Kobe earthquake,
Mexico earthquake and simulated Taipei Basin earthquake are used
as excitations. It is found that not only the maximum relative
displacement (of superstructure) but also the maximum base shear
(of piers) can be reduced significantly when these devices are
installed on the bridge.
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