Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2009.03a
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- Pages.64-71
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- 2009
Numerical approach on relationship between deformation of artificial crack and stress acting on tunnel shotcrete lining
인공균열 주위의 변형과 터널 숏크리트 라이닝 응력간의 상관관계에 대한 수치해석적 검토
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Shin, Hyu-Soung
(Underground Structure Research Div. KICT) ;
- Kwon, Young-Cheul (Underground Structure Research Div. KICT) ;
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Bae, Gyu-Jin
(Underground Structure Research Div. KICT) ;
- Kim, Kyung-Shin (Dept. of Civil Engineering, Hongik University) ;
- Kim, Hong-Taek (Dept. of Civil Engineering, Hongik University)
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신휴성
(한국건설기술연구원 지하구조물연구실) ;
- 권영철 (한국건설기술연구원 지하구조물연구실) ;
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배규진
(한국건설기술연구원 지하구조물연구실) ;
- 김경신 (홍익대학교 토목공학과) ;
- 김홍택 (홍익대학교 토목공학과)
- Published : 2009.03.27
Abstract
The stresses acting on shotcrete lining of tunnel have been measured virtually by monitoring instruments installed during construction. However, the malfunction of instrument and the lack of consistency of signal have always been controversial, but re-installation of instrument after construction of tunnel lining is practically impossible. Therefore, authors have carried out the study to develop a new technique for estimating the stress acting on shotcrete lining during and after construction. In the technique, stresses of shotcrete lining can be estimate by the measurement of deformation of free face. Therefore, the relationships between the stresses of shotcrete lining and deformation of free surface are indispensable factor. In this paper, the parametric study using 2D FEM analysis was carried out to estimate the relationships between the stress level acting on the tunnel shotcrete lining and the deformation near the free face (e.g. artificial crack in this study). The distribution of stresses of shotcrete lining is also investigated in this study as the preliminary investigation for the large-scale tunnel lining test and detailed 3D FEM analysis.