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《Electric Power Construction》 2008-12
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Study on Seismic Responses of Large Crossing Span Transmission Towers

YIN Peng~1 LI Li~1 HU Liang-xia~1 LIANG Feng~2(1.School of Civil Engineering and Mechanics,Huazhong University of Science and Technology,Wuhan 430074,China;2.Central Southern China Electric Power Design Institute,Wuhan 430071,China)  
Using 500 kV Rongjiang River large crossing line as an example,and choosing 3 seismic waves as input,time-history analysis is used to study relationship between input waves and tower-conductor system responses.Results show that lateral and longitudinal earthquake has almost same effect on single tower model;under lateral wave,tower top longitudinal response in tower-conductor model is caused by conductor free oscillation under initial excitation only,and has nothing to do with wave type and its peak value;conductor has no influence on tower lateral vibration,but only reduces the peak value of its lateral response;under longitudinal wave,tower top longitudinal displacement is mainly affected by conductor vibration,in the mean time,it is also affected by wave type and peak value;so tower seismic response is mainly longitudinal.
【Fund】: 国家电网公司科技项目(SGKJ[2007]413)
【CateGory Index】: TU311.3
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