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- W2348861996 abstract "In this paper,the optimal design model of the seismic absorption and isolation system for railway simple supported beam bridges considering the running safety of vehicles is established.The first order optimization method in ANSYS is used to realize the dynamic parameters optimal design of the lead core rubber bearing,and the variation influence of the structural Rayleigh damping coefficients on the absorption and isolation system and the interaction between soil and foundation are considered in the optimization process.Through calculation analysis,the influence rules of dynamic parameters of the lead-rubber bearing on bridge seismic responses are given: the ratio of the stiffness after yielding to the stiffness before yielding α has important effect on the structural seismic responses in the seismic isolation design by LRB for simple supported beam bridges located in different sites.Therefore,the requirements for seismic responses of bridges can be satisfied by the simplified method of changing the α values.In order to enhance the optimizing efficiency,the running safety can be considered out of the optimizing process.That is to say, the values of spectral intensity SI for the seismic input to the running vehicles can be checked after the optimal LRB parameters are determined." @default.
- W2348861996 created "2016-06-24" @default.
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- W2348861996 date "2006-01-01" @default.
- W2348861996 modified "2023-09-22" @default.
- W2348861996 title "Study on Optimization of the Design Parameter of Seismic Absorption and Isolation bearing for Railway Simple Supported Beam Bridges" @default.
- W2348861996 hasPublicationYear "2006" @default.
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