한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2006년도 춘계 학술발표회 논문집
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- Pages.189-198
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- 2006
NATM 터널의 응력-간극수압 연계 유한요소모델링
Stress-Pore Pressure Coupled Finite Element Modeling of NATM Tunneling
- Yoo, Chung-Sik (Dept. of Civil & Envir. Engrg, Sungkyunkwan Univ.) ;
- Kim, Sun-Bin (Dept. of Civil & Envir. Engrg, Sungkyunkwan Univ.)
- 발행 : 2006.03.24
초록
This paper concerns the finite element (FE) modeling approach for NATM tunneling in water bearing ground within the framework of stress-pore pressure coupled analysis. Fundamental interaction mechanism of ground and groundwater lowering was first examined and a number of influencing factors on the results of coupled FE analysis were identified. A parametric study was then conducted on the influencing factors such as soil-water characteristics, location of hydraulic boundary conditions, the way of modeling drainage flow, among others. The results indicate that the soil-water characteristics plays the most important role in the tunneling-induced settlement characteristics. Based on the results, modeling guidelines were suggested for stress-pore prssure coupled finite element modeling of NATM tunneling.