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http://dx.doi.org/10.14481/jkges.2017.18.3.31

A Proposal of Seismic Failure Probability Estimation Chart of the Korean Small and Medium Sized Earthfill Dams  

Ha, Iksoo (Department of Civil Engineering, Kyungnam University)
Lee, Soogwun (Department of Civil Engineering, Kyungnam University)
Kim, Namryong (K-water Institute)
Lim, Jeongyeul (K-water Institute)
Publication Information
Journal of the Korean GEO-environmental Society / v.18, no.3, 2017 , pp. 31-38 More about this Journal
Abstract
The purpose of this study is to propose a chart that can easily estimate the seismic failure probability of small and medium sized earthfill dams with little geotechnical information. By considering the existing method and procedure for estimating the seismic failure probability of a dam, the zero seismic failure probability curve, on which the seismic probability is zero regardless of the geotechnical properties of the dam, was determined in the form of hyperbola in the dam height and freeboard ratio plane. It was confirmed that the dam height-freeboard ratio distribution pattern of the Korean small and medium sized dams was shaped like a hyperbola like the zero seismic failure probability curve. Therefore, a estimation chart was constructed in which a number of seismic failure probability contours are represented by a number of hyperbolas at regular intervals in the dam height-freeboard ratio plane. The proposed chart was applied to the calculation of the seismic failure probability of two small and midium sized dams with relatively well-managed geotechnical properties and the validity of the chart was confirmed by comparison with the results obtained by the existing procedures and methods. In the future, the proposed chart is expected to be useful in considering investment priorities for maintenance and reinforcement of small and medium sized dams in preparation for earthquakes.
Keywords
Earthquake; Seismic failure; Probability; Small and Medium sized Dam; Freeboard;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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