한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2005년도 지반공학 공동 학술발표회
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- Pages.344-351
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- 2005
지하굴착지반에서의 지하수 흐름에 관한 신뢰성 해석
Reliability approach to groundwater flow analysis in underground excavation
- Jang, Yeon-Soo (Dept. of Civil Engineering, Dong-Guk University) ;
- Kim, Hong-Seong (SOC Construction & Engineering Co., Ltd) ;
- Park, Jeong-Wong (SAMBO Engineering Co., Ltd) ;
- Park, Joon-Mo (Keon-IL Engineering Co., Ltd)
- 발행 : 2005.10.07
초록
In this paper, a reliability-groundwater flow program is developed by coupling the 2-D finite element numerical groundwater flow program with first and second order reliability program. From the parametric study of hydraulic conductivity of soil layers, the increase of both mean and variance of hydraulic conductivity results in the increase of probability of exceeding the threshold hydraulic head. The probability of failure was more sensitive to parameters of weathered granitic soil and rock located at the middle and bottom of the excavation than those at the other locations. It can be recommended from this study that the reliability method, which can include the uncertainty of soil parameters, should be performed together with the deterministic analysis to compensate the weakness of the latter analysis for the groundwater flow problem of underground excavations.
키워드