다짐시공이 불량한 증고 저수지 제체의 침투 및 동적거동 해석
Numerical Simulation on Seepage and Seismic Behaviors of Poorly-Compacted Raised Reservoir Levee
0
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
It is urgent to redevelop the superannuated reservoir levee through the levee raising for countermeasure to climate change and improvement of storage capacity of reservoir. However, low compaction degree of the raised reservoir levee owing to poor construction condition leads to degradation of the stability of the reservoir levee on seepage and earthquake. In this study, seepage and seismic behavior of raised reservoir levee with low compaction degree was evaluated through numerical simulation. From the simulated results, water level raising possibly induces crack and/or sinkhole on the surface of the poorly-compacted raised reservoir levee owing to the increase of the subsidences at the crown and the front side of that. In addition, relatively larger displacement and acceleration response at the front side of raised reservoir levee in seismic condition may degrade overall stability of reservoir levee. Therefore, reasonable construction management for the compaction of the raised reservoir levee is required for ensuring long-term stability on seepage and earthquake.
Abstract
It is urgent to redevelop the superannuated reservoir levee through the levee raising for countermeasure to climate change and improvement of storage capacity of reservoir. However, low compaction degree of the raised reservoir levee owing to poor construction condition leads to degradation of the stability of the reservoir levee on seepage and earthquake. In this study, seepage and seismic behavior of raised reservoir levee with low compaction degree was evaluated through numerical simulation. From the simulated results, water level raising possibly induces crack and/or sinkhole on the surface of the poorly-compacted raised reservoir levee owing to the increase of the subsidences at the crown and the front side of that. In addition, relatively larger displacement and acceleration response at the front side of raised reservoir levee in seismic condition may degrade overall stability of reservoir levee. Therefore, reasonable construction management for the compaction of the raised reservoir levee is required for ensuring long-term stability on seepage and earthquake.
참고문헌 (21)
- Ehlers, W., "Deformation and localization analysis of partially saturated soil", Computer methods in applied mechanics and engineering, 193, pp.2885~2910 (2004), Elsevier
- Garcia, E., "Numerical analysis of the rainfall infiltration problem in unsaturated soil", 박사, pp.2010
- Horii, K., "Permanent displacement accompanied by circular failure of railway embankments due to seismic loading", 32nd annual meeting of Japanese Geotechnical Society, 946, pp.1895~1896 (1997)
- Jommi, C., "Remarks on the constititive modelling of unsaturated soils, Experimental Evidence and Theoretical Approaches in Unsaturated soils" (2000), Balkema
- Kato, R., "Development of an unsaturated seepagedeformation coupled simulation method and its application to river embankment", 박사, pp.2011
- Kim, "A study on the stability of the breakwater according to replacementlayer change under earthquake loading", Proceeding of the 35th Annual Conference of Korean Society of Civil Engineers, pp.2873~2876 (2009)
- Lee, C. W., "A study on dynamic stability of unsaturated road embankments using dynamic centrifugal model tests", 박사, pp.2012
- 이충원, "함수비에 따른 불포화 도로성토의 동적 안정성 평가", 한국지반공학회논문집, 30(6), pp.5~21 (2014), 한국지반공학회
- 이충원, "다짐시공이 불량한 증고 저수지 제체의 수위상승시 거동", 한국농공학회논문집, 56(6), pp.113~119 (2014), 한국농공학회
- Oka, F., "A cyclic elastoplastic constitutive model for sand considering a plastic-strain dependence of the shear modulus", Geotechnique, 49(5), pp.661~680 (1999)
- Oka, F., "multi-phase coupled FE analysis using an elastoviscoplastic model for unsaturated soil, Geomechanics II, Geotechnical Special Publication", Proc. 2nd US-Japan workshop on Geomechanics (2006), ASCE
- Oka, F., "A hydro-mechanical coupled analysis of an unsaturated river embankment dye to seepage flow, key engineering materials", Transtech publications, 340-341, pp.1223~1230 (2007)
- Oka, F., "Prediction and simulation methods for geohazard mitigation", pp.127~132 (2009), CRC Press
- Oka, F., "A seepage-deformation coupled analysis of an unsaturated river embankment using a multiphase elasto-viscoplastic theory, soil and Foundations", IS-KYOTO Special Issue, 50(4), pp.483~494 (2010)
- Okusa, S., "Wave-induced stresses in unsaturated submarine sediments", Geotechnique, 35(4), pp.517~532 (1985)
- Richtmyer, R. D., "Difference methods for initial-value problems" (1967), Interscience publishers
- Sakai, Y., "Reinvestigation on period range of strong ground motions corresponding to buildings damage, including data of the 2007 Noto-hanto and Niigata-ken Chuetsu-oki Earthquakes", Journal of structure and construction engineering, 74(642), pp.1531~1536 (2009), Architectural Institute of Japan
- 신종호, "저수변화에 따른 사력댐의 거동 연구", 한국지반공학회논문집, 19(6), pp.61~70 (2003), 한국지반공학회
- Taguchi, Y., "A Cyclic elasto-plastic model based on the generalized flow rule ant its application", Proc. 5th Int. Symposium on Numerical Models in Geomechanics, pp.57~62 (1995)
- The LIQCA Research and Development Group, "User's manual for LIQCA2D09", ~ (2009)
- van Genuchten, M. T., "A closed-form equation for predicting the hydraulic conductivity of unsaturated soils", Soil Science Society of America Journal, 44, pp.892~898 (1980)