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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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