Seismic Control of Power Transmission Tower Using Pounding TMD

AbstractLattice transmission towers are vital components of transmission line systems, which play an important role in the operation of electrical power systems. This paper proposes a new type of tuned mass damper (TMD), the pounding tuned mass damper (PTMD), to upgrade the seismic resistant perform...

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Bibliographic Details
Published inJournal of engineering mechanics Vol. 139; no. 10; pp. 1395 - 1406
Main Authors Zhang, Peng, Song, Gangbing, Li, Hong-Nan, Lin, You-Xin
Format Journal Article
LanguageEnglish
Published American Society of Civil Engineers 01.10.2013
Subjects
Collars
Design analysis
Mathematical models
Pounding
Technical Papers
Towers
Transmission towers
Ultrasonic testing
Vibration dampers
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Summary:AbstractLattice transmission towers are vital components of transmission line systems, which play an important role in the operation of electrical power systems. This paper proposes a new type of tuned mass damper (TMD), the pounding tuned mass damper (PTMD), to upgrade the seismic resistant performance of a transmission tower. In the PTMD, a limiting collar with viscoelastic material laced on the inner rim is installed to restrict the stroke of the TMD and to dissipate energy through collision. The pounding force is modeled based on the Hertz contact law, whereas the pounding stiffness β is estimated in a small-scale test. A multimass model of a 55-m tower is established to verify the effectiveness of the PTMD numerically. Harmonic excitation and time-history analysis demonstrate the PTMD’s superiority over the traditional TMD. Finally, a parametric study is performed for the optimal design.
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ISSN:0733-9399
1943-7889
DOI:10.1061/(ASCE)EM.1943-7889.0000576