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http://dx.doi.org/10.9720/kseg.2020.2.175

Infinite Slope Stability to Analyze the Effects of Rainfall and Vertical Seismic Coefficient in Limestone Area  

Moon, Seong-Woo (Department of Earth and Environmental Sciences, Chungbuk National University)
Kim, Hyeong-Sin (Department of Disaster Prevention Engineering, Chungbuk National University)
Yun, Hyun-Seok (Department of Earth and Environmental Sciences, Chungbuk National University)
Seo, Yong-Seok (Department of Earth and Environmental Sciences, Chungbuk National University)
Publication Information
The Journal of Engineering Geology / v.30, no.2, 2020 , pp. 175-184 More about this Journal
Abstract
In Korea, there are many regulations and cases for horizontal seismic coefficient to pseudo-static analysis of slope, but there are insufficient regulations and cases for vertical seismic coefficient. Therefore, geological investigation and laboratory tests were conducted to analyze the effect of the vertical seismic coefficient on slope stability, and pseudo-static analyses based on infinite slope stability analysis were performed by using those results. As a result, if the earthquake magnitude is less than M 5.0, the effect of the vertical seismic coefficient is not significant, and if the earthquake magnitude is more than M 6.0, the vertical seismic coefficient largely increases the unstable areas of Fs ≤ 1.1. These tendency is more distinct in rainfall condition than without rainfall condition.
Keywords
infinite slope stability analysis; pseudo-static analysis; vertical seismic coefficient; horizontal seismic coefficient; earthquake magnitude;
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