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Characteristic Period Value of the Seismic Design Response Spectrum of UHV Electrical Equipment
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作者 You Hongbing Zhao Fengxin You He 《Earthquake Research in China》 CSCD 2015年第1期117-127,共11页
Characteristic period is an important parameter of the seismic design response spectrum. There is important theoretical significance and engineering application value to the study of the characteristic period of seism... Characteristic period is an important parameter of the seismic design response spectrum. There is important theoretical significance and engineering application value to the study of the characteristic period of seismic design response spectrum of ultra high voltage (UHV) electrical equipment. In this paper, 1448 horizontal earthquake records within the world scope including the United States and Japan for Site Class m were analyzed. Results show that both magnitude and epicentral distance have great influence on the characteristic period. About 80 % of characteristic periods of strong earthquake records are about 0. 9s. Statistical analysis was conducted on the seismic hazard assessment results of 312 projects of China in recent years, and it is found that about 70 % of characteristic periods are about 0. 9s. Combined with the related code comparison and analysis, it is suggested that the characteristic period of the seismic design response spectrmn of UHV electrical equipment should select 0. 9s in order to effectively guarantee the seismic safety of UHV electrical equipment. 展开更多
关键词 UHV electrical equipment Seismic design response spectrum Characteristicperiod Statistical analysis
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Response spectrum of seismic design code for zones lack of near-fault strong earthquake records
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作者 李新乐 窦慧娟 +1 位作者 朱晞 孙建刚 《Acta Seismologica Sinica(English Edition)》 CSCD 2007年第4期447-453,共7页
It was shown from the study on the recently near-fault earthquake ground motions that the near-fault effects were seldom considered in the existing Chinese seismic code. Referring to the UBC97 design concept for near-... It was shown from the study on the recently near-fault earthquake ground motions that the near-fault effects were seldom considered in the existing Chinese seismic code. Referring to the UBC97 design concept for near-fault factors, based on the collected world-widely free-site records of near-fault earthquakes ground motions classified by earthquake magnitude and site condition, the attenuation relationship expressions of the acceleration spectrum demand at the key points within the long period and moderate period were established in term of the earthquake magnitude and the site condition. Furthermore, the near-fault factors' expressions about the earthquake magnitude and the fault distance were deduced for the area lack of near-fault strong earthquake records. Based on the current Chinese Building Seismic Design Code, the near-fault effect factors and the modified design spectral curves, which were valuable for the seismic design, were proposed to analyze the seismic response of structures. 展开更多
关键词 near-fault strong earthquake records spectral demand design response spectrum near-fault effect factor
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Site effect on strong-motion records of the 2011 Mw9.0 Tohoku earthquake in Japan 被引量:1
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作者 LI Heng Wang Ping +2 位作者 Feng Qian Li Guanghong Zhang Xinlin 《Geodesy and Geodynamics》 2011年第3期37-41,共5页
Strong-motion site effect was checked for four sites at comparable epicentral distances from the March 11, 2011 Mw9.0 Tohoku earthquake in Japan. The result showed that site condition had a significant impact on peak ... Strong-motion site effect was checked for four sites at comparable epicentral distances from the March 11, 2011 Mw9.0 Tohoku earthquake in Japan. The result showed that site condition had a significant impact on peak acceleration, and on maximal amplitude and characteristic period of its response spectrum. Shorter-period seismic waves were amplified mainly in shallower soils, while longer-period waves in deeper soft rocks and soils, where the characteristic periods of response spectra were longer than those on ground surface. 展开更多
关键词 site condition characteristic period long period underground structure design response spectrum
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