Evaluation of a pendulum pounding tuned mass damper for seismic control of structures

2021 ◽  
Vol 228 ◽  
pp. 111554
Author(s):  
Wenxi Wang ◽  
Zhilin Yang ◽  
Xugang Hua ◽  
Zhengqing Chen ◽  
Xiuyong Wang ◽  
...  
Keyword(s):  
Tuned Mass Damper ◽  
Seismic Control ◽  
Mass Damper

scholarly journals Multidimensional Seismic Control by Tuned Mass Damper with Poles and Torsional Pendulums

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Haoxiang He ◽  
Wentao Wang ◽  
Honggang Xu
Keyword(s):  
Time History ◽  
Tuned Mass Damper ◽  
Design Parameters ◽  
Damping Capacity ◽  
Torsional Angle ◽  
Total System ◽  
Coupling Vibration ◽  
Seismic Control ◽  
History Analysis ◽  
Mass Damper

Due to the eccentric characteristics and the torsional excitation of multidimensional earthquakes, the dynamic response of asymmetry structure involves the translation-torsion coupling vibration and it is adverse to structural performance. Although the traditional tuned mass damper (TMD) is effective for decreasing the translational vibration when the structure is subjected to earthquake, its translation-torsion coupled damping capacity is still deficient. In order to simultaneously control the translational responses and the torsional angle of asymmetry structures, a new type of tuned mass damper with tuned mass blocks, orthogonal poles, and torsional pendulums (TMDPP) is proposed. The translation-torsion coupled vibration is tuned by the movement of the mass blocks and the torsional pendulums. According to the composition and the motion mechanism of the TMDPP, the dynamic equation for the total system considering eccentric torsion effect is established. The damping capacity of the TMDPP is verified by the time history analysis of an eccentric structure, and multidimensional earthquake excitations are considered. The damping effect of the traditional TMD and the TMDPP is compared, and the results show that the performance of TMDPP is superior to the traditional TMD. Moreover, the occasional amplitude amplification in TMD control does not appear in the TMDPP control. The main design parameters which affect the damping performance of TMDPP are analyzed.

Top-story mass dampers for seismic control of the first triplet of vibration modes of two-way asymmetric-plan buildings

2016 ◽  
Vol 23 (18) ◽  
pp. 2962-2976 ◽  
Author(s):  
Jui-Liang Lin
Keyword(s):  
Frequency Response ◽  
Tuned Mass Damper ◽  
Degree Of Freedom ◽  
Vibration Modes ◽  
Building Structure ◽  
Response Functions ◽  
Seismic Responses ◽  
Seismic Control ◽  
Mass Damper ◽  
Three Degree Of Freedom

Using an inertial part of a building structure as a tuned mass damper (TMD) has been shown to have economic advantages in terms of required materials and space for installing and operating a TMD in a building. This study suggests either designing the top story of a new asymmetric-plan building or adding a purposely designed story atop an existing asymmetric-plan building as a TMD to protect the building against earthquakes. This novel TMD, called a top-story mass damper (TSMD), is formulated using the three-degree-of-freedom modal properties of the first triplet of vibration modes of the original two-way asymmetric-plan building. The so-called first triplet of vibration modes are the first dominant modes in each of the three directions, i.e., the two horizontal translations and one vertical rotation. The proposed TSMD is intended to suppress the vibrations resulting from the first triplet of vibration modes that are generally most significant in overall seismic responses. The effectiveness of the TSMD is verified by investigating the frequency response functions and seismic responses of one single-story and one 20-story two-way asymmetric-plan buildings.

scholarly journals Study on Seismic Control of Power Transmission Tower-Line Coupled System under Multicomponent Excitations

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Li Tian ◽  
Qiqi Yu ◽  
Ruisheng Ma
Keyword(s):  
Power Transmission ◽  
Equations Of Motion ◽  
Three Dimensional ◽  
Coupled System ◽  
Time Domain Analysis ◽  
Tuned Mass Damper ◽  
Transmission Tower ◽  
Line System ◽  
Seismic Control ◽  
Mass Damper

The seismic control of power transmission tower-line coupled system subjected to multicomponent excitations is studied in this paper. The schematic of tuned mass damper is introduced, and equations of motion of a system with tuned mass damper under multi-component excitations are proposed. Three-dimensional finite tower-line system models are created based on practical engineering in studying the response of this system without and with control. The time domain analysis takes into account geometric nonlinearity due to finite deformation. The optimal design of the transmission tower-line system with tuned mass damper is obtained according to different mass ratio. The effects of wave travel, coherency loss, and different site conditions on the system without and with control are investigated, respectively.

Optimization of tuned mass damper for seismic control of submerged floating tunnel

2021 ◽  
Vol 241 ◽  
pp. 112460
Author(s):  
Chungkuk Jin ◽  
Woo Chul Chung ◽  
Do-Soo Kwon ◽  
MooHyun Kim
Keyword(s):  
Tuned Mass Damper ◽  
Seismic Control ◽  
Mass Damper ◽  
Submerged Floating Tunnel
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