Optimization of Large-Tonnage Lead Rubber Bearing for Highway Bridge

Abstract:

A 10000kN lead rubber bearing is taken as an example to study the energy dissipation mode of isolated bridge and optimal lead rate of the bearing. Bilinear spring model considering the effect of real lead rate on the stiffness is used to simulate the bearing. Optimization of the lead rate in different site soil conditions and different axial compression ratio of pier is carried on by using nonlinear dynamic time history analysis. It is shown that the axial compression ratio of pier has great influence on the energy dissipation mode of isolated bridge and the optimal lead rate of the bearing. Site soil conditions have little effect on the energy dissipation mode of the isolation bridge and the optimal lead rate when the axial compression ratio of pier is fixed.

• Periodical: Applied Mechanics and Materials (Volumes 71-78)
• Pages: 3832-3836
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.71-78.3832
• Online since: July 2011
• Authors: Guo Hui Zhao, Jian Hui Zhao, Xin Zhang
• Keywords: Axial Compression Ratio, Lead Rubber Bearing, Nonlinear Dynamic Time History Method, Optimal Lead Rate, Site Soil

References

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