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Effects of the ground water level on the stability of an underpass structure considering the degree of surface imperviousness
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 Title & Authors
Effects of the ground water level on the stability of an underpass structure considering the degree of surface imperviousness
Jo, Seon-Ah; Hong, Eun-Soo; Cho, Gye-Chun; Jin, Kyu-Nam; Lee, Jung-Min; Han, Shin-In;
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 Abstract
Ground water is one of important parameters in the designs of underpass structures because urban areas are characterized by soil ground which is relatively permeable than rock ground and a high level of ground water due to low elevation. Therefore, it is important properly to predict variations of the ground water when they can affect underpass structures. In this study, a series of numerical analyses are performed to predict the variations of ground water levels considering the degree of surface imperviousness and LID(Low Impact Development) application. In turn the stability of underground structure is assessed using predicted ground water level. The results show that an increase in the impervious surface area decreases the ground water level. The application of permeable pavement as a LID facility increases the ground water level, improving the infiltration capacity of rainfall into the ground. Seasonal variations of the ground water level are also verified in numerical simulation. The results of this study suggest that reasonable designs of underpass structures can be obtained with the suitable prediction and application of the ground water level considering the surface characteristics.
 Keywords
Underpass structure;Ground water;Buoyant force;Low impact development;Impervious surface;
 Language
Korean
 Cited by
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