Experimental Research on Damping Effect of Double-Layer Tuned Mass Damper for High-Rise Structure | Zendy

Botan Shen | Zendy; Jin Wang | Zendy; Weibing Xu | Zendy; Yanjiang Chen | Zendy; Yan Weiming | Zendy; Jianhui Huang | Zendy; Zhenyun Tang | Zendy

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Experimental Research on Damping Effect of Double-Layer Tuned Mass Damper for High-Rise Structure

Author(s) -

Botan Shen,

Jin Wang,

Weibing Xu,

Yanjiang Chen,

Yan Weiming,

Jianhui Huang,

Zhenyun Tang

Publication year - 2021

Publication title -

shock and vibration

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.418

H-Index - 45

eISSN - 1875-9203

pISSN - 1070-9622

DOI - 10.1155/2021/7523127

Subject(s) - tuned mass damper , vibration , structural engineering , damping ratio , displacement (psychology) , damper , rise time , vibration control , acceleration , damping torque , modal , robustness (evolution) , ground motion , frequency response , transient response , engineering , coefficient of restitution , physics , control theory (sociology) , mechanics , materials science , acoustics , computer science , classical mechanics , voltage , artificial intelligence , psychotherapist , chemistry , psychology , biochemistry , direct torque control , control (management) , polymer chemistry , induction motor , electrical engineering , gene

A double-layer tuned mass damper (DTMD) has advantages of wide damping frequency band and strong robustness. At present, there is a lack of seismic design methods for high-rise structures based on DTMDs. In this study, a DTMD parameter optimisation method was proposed, with the objective of minimising the peak displacement response of a first N-order vibration modal with a vibration mass participation factor of 85%. Then, a scale model of a high-rise structure was fabricated, along with a corresponding DTMD. Different types of excitations were chosen to clarify the dynamic responses of the model with and without the DTMD, including Site-II ground motions, long-period (LP) ground motions without pulses, and near-fault pulse-type (NFPT) ground motions. The results indicate that the dynamic responses of high-rise structures under LP and NFPT ground motions are much greater than those under Site-II ground motions. The DTMD can effectively reduce the absolute displacement response, acceleration response, and strain response at the top floor of the test model. However, the DTMD has a time delay in providing the damping effect. A smaller damping ratio between the upper TMD and the controlled structure will lead to a more significant damping effect for the DTMD.

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