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http://dx.doi.org/10.7843/kgs.2019.35.1.43

A Numerical Study on the Occurrence Scope of Underground Cavity and Relaxation Zone Considering Sewerage Damage Width and Soil Depth  

You, Seung-Kyong (Dept. of Civil Engrg., Myongji College)
Ahn, HeeChul (Dept. of Civil Engrg. & Environmental Engrg., Chung-Ang Univ.)
Kim, Young-Ho (Dept. of Civil Engrg. & Environmental Engrg., Chung-Ang Univ.)
Han, Jung-Geun (Dept. of Civil Engrg. & Environmental Engrg., Chung-Ang Univ.)
Hong, Gigwon (Institute of Technology Research and Development, Korea Engineering & Construction)
Park, Jeong-Jun (Incheon Disaster Prevention Research Center, Incheon Natl. Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.35, no.1, 2019 , pp. 43-53 More about this Journal
Abstract
This paper described a result of finite element analysis considering sewerage damage scale and soil depth, in order to analyze quantitatively for cavity and relaxation zone of underground due to sewerage damage. The mechanical model, which was verified by previous studies, was applied to the finite element analysis. In addition, the mechanical behavior of the soil around the sewerage damage due to the soil loss was simulated by using the forced displacement. Based on finite element analysis results, characteristics of the void ratio distribution, ground subsidence, and shear stress distribution according to sewerage damage scale and soil depth were analyzed. And then, The boundaries of the underground cavity and relaxation zone were determined by using the shear stress reduction characteristics of the ground. Also, an occurrence scope of the cavity and relaxation zone was quantitatively evaluated by the change of sewerage damage scale and soil depth.
Keywords
Cavity; Relaxation zone; Forced displacement; Shear stress reduction ratio; Finite element analysis;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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