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- W2354906967 abstract "The semi-active control for seismic responses of a long-span cable-stayed bridge was performed using MRF-04K type magnetorheological (MR)damper manufactured recently.The motion equation of the long-span cable-stayed bridge controlled by MR damper was derived under multi-support asynchronous earthquake excitations, and the instantaneous optimal control algorithm suitable to analyze the control of seismic responses of the long-span cable-stayed bridge was established using the subspace mode analysis method.The simulated results show that the difference of the response amplitudes of the cable-stayed bridge under different earthquake excitations is great.And the response amplitudes under Tianjin wave excitation are the maximum.This proves that the seismic responses of cable-stayed bridge are much sensitive to the spectral property of the earthquake excitation.During El-Centro wave excitation, the amplitude of the longitudinal displacement at the middle of main span of the bridge decreases by 57.0~0_0 and the amplitude of the longitudinal displacement at the top of the tower of the bridge decreases by 67.5~0_0, but the amplitude of the vertical displacement at the middle of main span of the bridge increases by 28.3~0_0.The influence of the traveling wave effect on the seismic responses of the cable-stayed bridge is obvious, in which the longitudinal displacements at the middle of the main span and the top of the tower of the bridge are reduced even more,but the vertical displacement at the middle of the main span of the bridge slightly increases." @default.
- W2354906967 created "2016-06-24" @default.
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- W2354906967 date "2005-01-01" @default.
- W2354906967 modified "2023-09-23" @default.
- W2354906967 title "MR Damper Semi-Active Control of Seismic Responses of Long-Span Cable-Stayed Bridges" @default.
- W2354906967 hasPublicationYear "2005" @default.
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