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http://dx.doi.org/10.12814/jkgss.2022.21.1.049

Numerical Analysis on the Influence Factors of Cavity Occurrence in the Stability of the Underground with Cavity  

Nam, Jun-Hee (Dept. of Civil Engineering, Daejin University)
Kim, Jong-Chul (Dept. of Civil Engineering, Daejin University)
Lee, Kang-Il (Dept. of Civil Engineering, Daejin University)
Publication Information
Journal of the Korean Geosynthetics Society / v.21, no.1, 2022 , pp. 49-56 More about this Journal
Abstract
In this study, finite element numerical analysis was performed considering various influence factors(cavity shape and size, pavement thickness and size of traffic load) in order to analyze the impact factors in the underground of the road where the cavity occurred and to evaluate the stability of the ground. In order to verify the reliability of the numerical analysis method applied in this study and the results it was compared and analyzed with the results of previous studies and field measurements. The correlation between the influence factors was analyzed through the distribution of vertical displacement obtained from the numerical analysis results, the distribution of surface settlement and surface settlement, the distribution of the stress ratio, and the distribution of the safety factor. As a result, it was confirmed that as the size of the cavity and traffic load increased and the thickness of the pavement decreased, the vertical displacement and surface settlement at the top of the cavity increased. Also, the shape of the cavity was square, the stability of the ground was significantly reduced compared to the case of a circular cavity. Through these results, it was possible to confirm the overall stability of the lower ground of the road where the cavity was generated.
Keywords
Numerical analysis; Cavity; Influence factors; Surface settlement; Safety factor;
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Times Cited By KSCI : 3  (Citation Analysis)
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