Abstract
A parameter optimization design method is proposed for multiple coal bucket dampers (CBDs) to reduce the seismic response of coal‐fired power plants. To test the damping effect of the optimized CBDs, a 1 : 30 scale shaking table test model of a power plant structure was fabricated. A comparative testing program was conducted using three seismic excitations on a model with and without CBDs. A finite element analysis model, replicating the conditions of the shaking table test, was constructed for comparison, and the shock absorption effects of CBDs subjected to 22 groups of far‐field seismic action and 28 groups of near‐field seismic action were analyzed. Finally, the influence of changes in the structural period on the seismic response of the CBD‐equipped structure was studied. The results indicate that the use of CBDs in a coal‐fired power plant structure, based on an optimization design method for multiple‐tuned mass dampers (MTMDs), results in a significant reduction in the structure displacement response, displays a certain discreteness under different excitations, and maintains a certain damping stability even as the structural period changes. Overall, the use of CBDs is a promising prospect for improving the seismic performance of coal‐fired power plant structures.
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