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Indexed by:期刊论文

Date of Publication:2013-06-01

Journal:Gongcheng Lixue/Engineering Mechanics

Included Journals:EI、PKU、ISTIC、Scopus

Volume:30

Issue:SUPPL.1

Page Number:273-278+283

ISSN No.:10004750

Abstract:The responses of a transmission tower-line system under multi-component multi-support excitations of SMART-1 seismic array are investigated. A three-dimensional finite element model of a transmission tower-line coupled system considering the geometric nonlinearity of a transmission line is established based on a practical engineering project. The multi-component multi-support seismic time history of SMART-1 seismic array is selected, and the responses of a transmission tower-line system with different unfold type angles under multi-component uniform and multi-component multi-support excitations are studied, respectively. The results show that the responses of a transmission tower-line system under multi-component multi-support excitations are larger than those under multi-component uniform excitations, but the increasing degrees vary with the change of angles, especially the vertical displacement of a transmission line is strongly amplified. The response of a transmission line is studied with different angles according to real multi-component multi-support seismic waves, and the multi-component multi-support earthquakes have different influences on a transmission line with different angles. The analysis results obtained could provide a reference for the aseismic design of transmission lines.