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论文类型：期刊论文

发表时间：2013-10-01

发表刊物：JOURNAL OF ENGINEERING MECHANICS

收录刊物：SCIE、Scopus

卷号：139

期号：10

页面范围：1395-1406

ISSN号：0733-9399

关键字：Electric transmission structures; Seismic design; Energy dissipation; Earthquake engineering; Structural control; Damping; Earthquake resistant structures; Impact forces; Impact tests; Seismic design; Energy dissipation; Earthquake engineering; Structural control; Damping; Earthquake-resistant structures; Impact forces; Impact tests

摘要：Lattice 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 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.