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5Šª
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1978”N
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1225-1232•Å
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PROCEEDINGS OF JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM
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Taro UHIMOGO, Masachika NAKANO, Junji TATEOKA
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SEISMIC RESPONSE OF EHV GAS INSULATED SWITCHGEAR
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This paper aims to proceed a dynamical study for the purpose of the antiearthquake design of an extremely high voltage (EHV) and heavy current gas (SF¡) insulated switchgear (12,OOOA, 500kV). The dynamic model of the structure is proposed on the basis of the vibration testing results obtained by the continuous sinusoidal wave excitation and 3 cycles of sinusoidal wave excitation at resonance, and the structural parameters and the frequency response functions are estimated through the dynamic model. The amplification factor of each component of the structure was evaluated for the excitation of the 3 cycles of sinusoidal wave at the fundamental resonance frequency (about 5Hz) by using the dynamic model. And further the effects of the variation of the structural parameters of each component on the amplification factor were examined. The amplification factor of the rms acceleration for the excitation of the band-limited stationary white noise and that of the maximum acceleration for the El Centro earthquake waveorm were also obtained by a theoretical calculation and a digital simulation, respectively.
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