Probabilistic Analysis of Weathered Soil Slope in South Korea
Rainfall is a major trigger of shallow slope failures, and it is necessary to consider the spatial correlation of soil properties for probabilistic analysis of slope stability in heterogeneous soil. In this study, a case study of a weathered soil slope in Korea was performed to identify the rainfall...
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Wiley
2018-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/2120854 |
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| author | Taeho Bong Younghwan Son |
| author_facet | Taeho Bong Younghwan Son |
| author_sort | Taeho Bong |
| collection | DOAJ |
| description | Rainfall is a major trigger of shallow slope failures, and it is necessary to consider the spatial correlation of soil properties for probabilistic analysis of slope stability in heterogeneous soil. In this study, a case study of a weathered soil slope in Korea was performed to identify the rainfall-induced landslides considering the spatial variability of the soil properties and the probabilistic rainfall intensity depending on the return period and the rainfall duration. Various laboratory tests were performed to determine the physical properties of the site, and an electrical resistivity survey was carried out to understand the soil strata. Cohesion, friction angle, and permeability were considered as random variables considering the spatial variability, and the probabilistic rainfall intensities for return period of 2, 5, 10, 50, 100, and 200 years were used to consider the effects of rainfall infiltration. The results showed that a probabilistic framework can be used to efficiently consider the spatial variability of soil properties, and various slope failure patterns were identified according to the spatial variability of the soil properties and the probabilistic rainfall intensity. |
| format | Article |
| id | doaj-art-8c455e87ee49437d89ffbd5d1f9aa3ce |
| institution | OA Journals |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-8c455e87ee49437d89ffbd5d1f9aa3ce2025-08-20T02:09:13ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/21208542120854Probabilistic Analysis of Weathered Soil Slope in South KoreaTaeho Bong0Younghwan Son1Oregon State University, 101 Kearney Hall, Corvallis, OR 97331, USADepartment of Rural Systems Engineering and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Republic of KoreaRainfall is a major trigger of shallow slope failures, and it is necessary to consider the spatial correlation of soil properties for probabilistic analysis of slope stability in heterogeneous soil. In this study, a case study of a weathered soil slope in Korea was performed to identify the rainfall-induced landslides considering the spatial variability of the soil properties and the probabilistic rainfall intensity depending on the return period and the rainfall duration. Various laboratory tests were performed to determine the physical properties of the site, and an electrical resistivity survey was carried out to understand the soil strata. Cohesion, friction angle, and permeability were considered as random variables considering the spatial variability, and the probabilistic rainfall intensities for return period of 2, 5, 10, 50, 100, and 200 years were used to consider the effects of rainfall infiltration. The results showed that a probabilistic framework can be used to efficiently consider the spatial variability of soil properties, and various slope failure patterns were identified according to the spatial variability of the soil properties and the probabilistic rainfall intensity.http://dx.doi.org/10.1155/2018/2120854 |
| spellingShingle | Taeho Bong Younghwan Son Probabilistic Analysis of Weathered Soil Slope in South Korea Advances in Civil Engineering |
| title | Probabilistic Analysis of Weathered Soil Slope in South Korea |
| title_full | Probabilistic Analysis of Weathered Soil Slope in South Korea |
| title_fullStr | Probabilistic Analysis of Weathered Soil Slope in South Korea |
| title_full_unstemmed | Probabilistic Analysis of Weathered Soil Slope in South Korea |
| title_short | Probabilistic Analysis of Weathered Soil Slope in South Korea |
| title_sort | probabilistic analysis of weathered soil slope in south korea |
| url | http://dx.doi.org/10.1155/2018/2120854 |
| work_keys_str_mv | AT taehobong probabilisticanalysisofweatheredsoilslopeinsouthkorea AT younghwanson probabilisticanalysisofweatheredsoilslopeinsouthkorea |