Implementation and vibration control of an array multi-tuned mass damping system for modular buildings
HE Qingguang1,2 , ZHANG Shiquan1, ZHU Qiankun1,2, HONG Qikai1
1.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province,Lanzhou University of Technology,Lanzhou 730050,China;
2.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education,Lanzhou 730050,China
Abstract:A modularized suspended floors system (MSFS) was proposed based on the principle of building modularity and vibration controlling by using suspended floors. A distributed array multiple tuned mass dampers (d-array-MTMDs) system was constructed using floor stabs as TMDs. Thirty-two ground motion records were entered for time-history analysis and the optimal values of the five parameters are given, including the average tuning frequency ratio η, the tuning bandwidth coefficient β, the tuning damping ratio ζT, the number of TMDs n, and the number of layers N of the main structure. The results show that the damping effect of d-array-MTMDs system is better than that of ordinary MTMDs system. ζT has little influence on the vibration control performance of the system. When η is 0.7~1.0 and β is 2.0, the system has the best vibration control effect. When n is greater than a certain threshold, the vibration control effect and stability of the system are improved significantly. The threshold is positively correlated with η and negatively correlated with ζT. With the increase of the number of a module building storey, the system can also maintain an improved vibration control effect.
何晴光1,2,张释佺1,朱前坤1,2,洪祺凯1. 模块化建筑阵列多调谐质量阻尼系统的实现与减震研究[J]. 振动与冲击, 2024, 43(6): 262-272.
HE Qingguang1,2,ZHANG Shiquan1, ZHU Qiankun1,2, HONG Qikai1. Implementation and vibration control of an array multi-tuned mass damping system for modular buildings. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(6): 262-272.
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