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A Study on Ground Response Curve for Tunnel Design  

Lee, Song (서울시립대학교 토목공학과)
Ahn, Sung-Hak (서울시립대학교 토목공학과)
Ahn, Tae Hun (서울시립대학교 토목공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.7, no.1, 2003 , pp. 181-190 More about this Journal
Abstract
The convergence-confinement method is an attempt to evaluate tunnel stability conditions by means of a mathematical model and a ground response curve. In this study, the convergence-confinement method by numerical model was examined. This method don't need the basic assumptions for a mathematical model. Also This is applicable to general tunnel. According to the results of this study, the change of shotcrete stiffness and the load-distribution ratio used for 2-Dimension numerical analysis are not signficant factors. The ground response curve and the support reaction curve are mutually dependent. Especially the support reaction curve depends upon the ground response curve. The mechanism of tunnel must be analyzed by the interaction between support and ground. Consequently the stability of tunnel must be qualitatively investigated by a ground response curve and quantitatively adjudged by a numerical analysis for the reasonable design of tunnel.
Keywords
터널;지반응답곡선;수렴-제한법;지보반응곡선;하중분담율;
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