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Korea's approach to the seismic design of dams

机译：韩国对大坝进行抗震设计的方法

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摘要

Recent progress in the seismic design of dams and studies on the performance of existing dams in the event of earthquakes based on the revision of national standards in Korea, are described in this paper. Korean practice in the seismic design of dams was updated as part of a revision of the country's 'Standards of Dam Facilities' in 1993. After the major Kanto earthquake of 1925, seismic coefficient methods were proposed by Mononobe of Japan in 1925, as a new method of earthquake-resistant design. This is a kind of pseudo-static method, assuming that seismic acceleration corresponds with ground acceleration, and is applied uniformly to structures of materials with a high stiffness value. Earthquakes of the magnitude of the 1995 Hyogo-ken Nanbu event are increasing in Korea and other countries. Therefore it is necessary to establish practical standards for seismic design and performance evaluation methods for dams and other major civil engineering structures. As a result, detailed seismic risk maps have been drawn up in Korea. Existing risk maps and seismic zones were reviewed as a part of the 'Study of Earthquake Resistant Design Technology' which was carried out by Korea's Construction and Transportation Ministry in 1997. Revised seismic risk maps represent the seismic acceleration corresponding to a 10 per cent probability of exceedance in 5, 10, 20, 50, 100 and 250 years, which is equivalent to the value of mean occurrence periods of 50, 100, 200, 500 and 1000 years.
机译：本文描述了基于韩国国家标准修订版的大坝抗震设计的最新进展以及在地震情况下现有大坝的性能研究。韩国在大坝抗震设计中的实践作为1993年日本“大坝设施标准”修订版的一部分进行了更新。1925年关东大地震之后，日本Mononobe在1925年提出了地震系数法，抗震设计方法。这是一种伪静态方法，假设地震加速度与地面加速度相对应，并且被均匀地应用于具有高刚度值的材料结构。 1995年兵库县南部地震的规模在韩国和其他国家/地区不断增加。因此，有必要建立大坝和其他主要土木工程结构抗震设计和性能评估方法的实用标准。结果，在韩国已经绘制了详细的地震风险图。现有的风险图和地震带已作为1997年韩国建设和交通部开展的“抗震设计技术研究”的一部分进行了审查。修订后的地震风险图表示地震加速度对应于10％的概率。超出5、10、20、50、100和250年，这等于50、100、200、500和1000年的平均发生期的值。

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