Optimization and Damping Performance of a Coal-Fired Power Plant Building Equipped with Multiple Coal Bucket Dampers

• Published in: Advances in Civil Engineering Vol. 2018; no. 2018; pp. 1 - 19
• Main Authors: Deng, Yu-Ke, Lai, Zong-Rui, Kang, Ying-Jie, Peng, Ling-Yun
• Format: Journal Article
• Language: English
• Published: Cairo, Egypt Hindawi Publishing Corporation 01.01.2018; Hindawi; John Wiley & Sons, Inc; Hindawi Limited
• Subjects: Civil engineering; Coal-fired power plants; Comparative analysis; Damping; Design optimization; Design parameters; Earthquake dampers; Earthquakes; Electric power generation; Electric power-plants; Finite element method; Model testing; Nuclear energy; Nuclear power plants; Power plants; Reinforced concrete; Replicating; Seismic engineering; Seismic response; Seismic stability; Shake table tests; Shaking; Structural stability; Test firing; Vibration isolators
• ISSN: 1687-8086; 1687-8094
• DOI: 10.1155/2018/7015019

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.