| Statistical Analysis on the Corner Period of Site-Related Design Spectra |
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| 作者姓名： | Wu Jian |
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| 作者单位： | Wu Jian and Gao MengtanInstitute of Geophysics，CEA，Beijing 100081，China |
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| 摘 要： | INTRODUCTIONFromTJ1 1 74 ,theseismicdesignforbuildingshasbeenbasedontheaccelerationresponsespectruminChina (HuYuxian ,1 988) .ThevalueofTgoftheresponsespectrumvariesbecauseofdifferentsiteclassesanddifferentearthquakeenvironments .Designresponsespectrainc…
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| 关 键 词： | 生境关联 设计频谱 角周期 地震编码 波动效应 |
Statistical Analysis on the Corner Period of Site-Related Design Spectra |
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| Wu Jian.Statistical Analysis on the Corner Period of Site-Related Design Spectra[J].Earthquake Research in China,2005,19(1):29-34. |
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| Authors: | Wu Jian |
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| Institution: | Wu Jian and Gao MengtanInstitute of Geophysics,CEA,Beijing 100081,China |
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| Abstract: | According to the results of site seismic hazard analysis accomplished in the past decades, 96 site-related design spectra are selected as samples in this study. The result shows that the value of the corner period (T g) of the design spectrum in GBJ11-89 (China Seismic Building Code, issued in 1989) is lower than the value obtained by site seismic hazard analysis. The same situation exists when we compare the design spectra of the Codes to the spectra according to the earthquake records. The value in current seismic design code, GBJ50011-2001 issued in 2001, is greater than that in GBJ11-89, but still less than the value obtained by site seismic hazard analysis. If we accept the value got by site seismic hazard analysis, we have a suspicion that 2/3 of buildings built according to GBJ11-89 will not be safe when an earthquake with 2% probability of exceedance in 50 years occurs. |
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| Keywords: | Site-related design spectrum Corner period of design spectrum Seismic code |
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