Multi-Parameter Damper Optimization of Cable-Stayed Bridge Considering Energy Dissipation

Abstract

The parameters optimization of a viscous damper is carried out with a cable-stayed bridge with a single cable plane and a single tower. Based on five optimization parameters and four optimization functions of damper energy dissipation and structure, the relationship between each function and damper parameters is obtained. Finally, the spatial distribution surface of the multi-parameter objective optimization function is constructed, and the final optimization result is obtained. The optimization process shows that the reasonable viscous damper parameters can effectively inhibit the vibration and structural response of the bridge under seismic excitation. At the same time, the single control target optimization function may result in non-convergence, and the optimization value cannot be obtained. The multi-parameter objective optimization function introduced considering the energy dissipation of the damper can effectively avoid this shortcoming and finally obtain reasonable damper optimization parameters.