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http://dx.doi.org/10.12814/jkgss.2017.16.2.011

A Study on Simulation of Cavity and Relaxation Zone Using Laboratory Model Test and Discrete Element Method  

Kim, Joo-Bong (School of Civil and Environmental Engineering, Chung-Ang Univ.)
You, Seung-Kyong (Dept. of Civil Engineering, Myongji College)
Han, Jung-Geun (School of Civil and Environmental Engineering, Urban Design and Study, Chung-Ang Univ.)
Hong, Gi-Gwon (Institute of Technology Research and Development, Korea Engineering & Construction)
Park, Jong-Beom (Shinmyeong Construction Engineering)
Publication Information
Journal of the Korean Geosynthetics Society / v.16, no.2, 2017 , pp. 11-21 More about this Journal
Abstract
Ground subsidence mainly occurs due to the soil wash-away caused by cracked sewer pipes. It is necessary to understand the behavior surrounding soils with the formation of cavity and relaxation zone to set up counterplan. In this paper, a series of laboratory model tests and numerical analyses (Discrete Element Method) were performed to investigate the ground subsidence mechanism due to sewer pipe damage. For model tests, aluminum rod and trap door were used to simulate the behavior of model ground. Test results were compared with the numerical analyses conducted under the same boundary conditions with model tests. From this study, it was investigated the shape and size of cavity and relaxation zone due to the soil wash-away and a void ratio distribution of surrounding soils with relaxation properties.
Keywords
Cavity; Discrete element method; Ground subsidence; Model test; Numerical analysis; Relaxation zone;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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