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Numerical Investigation on Seismic Responses of Highspeed Railway Isolated Bridge with Lead Rubber Bearings |
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PP: 87S-92S |
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Author(s) |
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Chen Ling-kun,
Jiang Li-zhong,
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Abstract |
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| This paper presents the seismic isolation design method developed for nonlinear dynamic
analysis of three-dimensional-isolated-railway bridge with lead rubber bearings. The equivalent
bilinear modal and calculation method of dynamic parameters of lead rubber bearings are established,
the seismic responses of pre-and post-seismic isolation of bridge are calculated, the effect of different
vehicle speed and earthquake strength on the performance of seismic isolated bridges are analyzed.
The results indicate that the seismic response of bridge decrease significantly after being isolated, the
seismic isolation ratio is approximately between 60-70%. |
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