| 关于完善甲类建筑防震标准的思考 |
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| 引用本文： | 鄢家全,刘爱文,俞言祥,潘华,吕红山,郝玉芹.关于完善甲类建筑防震标准的思考[J].国际地震动态,2011(5):27-32. |
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| 作者姓名： | 鄢家全 刘爱文 俞言祥 潘华 吕红山 郝玉芹 |
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| 作者单位： | 中国地震局地球物理研究所; |
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| 基金项目： | 地震行业科研专项200908011资助 |
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| 摘 要： | 本文认为,宜按设计使用年限之不同,将甲类建筑由设计使用年限100年的甲A类和设计使用年限为50年的甲B类,分别确定设防地震的概率水平.考虑到国家抗震设防政策的延续性,并结合我国地震危险特性,甲A类建筑3个设防地震的重现期宜取200年、2000年和5000～10000年;甲B类建筑3个设防地震的重现期宜取100年、100...
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| 关 键 词： | 建筑工程 防震标准 设防地震 概率水平 |
Discussion on improving criterion of aseismatic design for class A buildings |
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| Yan Jiaquan,Liu Aiwen,Yu Yanxiang,Pan Hua,Lii Hongshan,Hao Yuqin.Discussion on improving criterion of aseismatic design for class A buildings[J].Recent Developments in World Seismology,2011(5):27-32. |
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| Authors: | Yan Jiaquan Liu Aiwen Yu Yanxiang Pan Hua Lii Hongshan Hao Yuqin |
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| Institution: | Yan Jiaquan,Liu Aiwen,Yu Yanxiang,Pan Hua,Lü Hongshan,Hao Yuqin(Institute of Geophysics,China Earthquake Administration,Beijing 100081,China) |
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| Abstract: | Class A buildings are suggested to be divided into 2 categories, class Aa and class Ab, subjecting to their design service periods of 100 years and 50 years, respectively. The seismic fortification probability levels for class Aa and Ab buildings ought to be different. Taking into account the continuity of the aseismatic design policy and the characteristics of seismic hazard in China, the 3 presumed recurrence periods of earthquakes in aseismatic design for class A, buildings ought to be 200, 2000 and 5000-10000 years, respectively. For class Ab buildings, the recurrence periods ought to be 100, 1 000 and 2 500-5 000 years. In terms of exceeding probability in design service period, they should be 40%, 5% and 1%-2%. These suggestions guarantee the consistency of seismic safety level for class A buildings with different design service periods, and make it different from class B and class C buildings, for which the exceeding probability is 63%, 10% and 2%-3% in 50 years. This also satisfies the requirement that the PGA of level 1 earthquake should not be less than 1/3 of that of level 2. The suggestions of this paper should be useful for improving criterion of aseismatic design for class A buildings. |
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| Keywords: | building structure criterion of aseismatic design fortification against earthquakes exceeding probability level |
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