Seismic damping effectiveness of a new rocking wall tuned mass dampers (RW-TMDs) under dynamic loads
Hang Yin,Wei Nie,Ke Xu,Songlin Wang,Tianbao Liang,Runze Zhang,Shuxian Liu
Abstract
To improve the frequency sensitivity of a single tuned mass damper (TMD) and solve the complexity for multiple tuned mass dampers (MTMD) to determine the control mode and the effective number of TMDs, a new type of MTMD, namely rocking wall tuned mass dampers (RW-TMDs), is proposed in this paper based on the structural characteristics of rocking wall and the damping principle of TMD. To prove the effectiveness of RW-TMDs, theoretical analysis and numerical simulations were used to compare the damping effects of uncontrolled structures and controlled structures with TMD and RW-TMDs, respectively, under Gaussian white noise and different earthquake excitations. The results show that the RW-TMDs arranged along the height of the structure can effectively alleviate the frequency sensitivity of TMD, significantly reducing structural peak and root mean square value of acceleration and displacement. Besides, RW-TMDs with advantages of rocking wall structure can control inter-layer deformation mode and prevent the occurrence of layer collapse mechanism, efficiently. Furthermore, the RW-TMDs can mitigate structural damage degree by increasing the damping energy dissipation and reducing the plastic energy dissipation. Therefore, the RWTMDs have a high potential in practical applications for vibration control of building.
Key Words
energy dissipation; numerical simulation; rocking wall tuned mass damper; theoretical analysis; vibration control
Address
(1) Hang Yin — College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
(2) Wei Nie, Ke Xu — School of Management Science and Engineering, Henan University of Economics and Law, Zhengzhou 450046, China
(3) Songlin Wang, Tianbao Liang — China Construction Eighth Engineering Division Rail Transit Construction CO., LTD, Zhengzhou 450046, China
(4) Runze Zhang — Civil Engineering and Architecture Institute, Zhengzhou University of Aeronautics, Zhengzhou 450046, China
(5) Shuxian Liu — Department of Civil Engineering, Liaoning Technical University, Fuxin 123000, China.
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