한국지반공학회논문집 (Journal of the Korean Geotechnical Society)

  • 제31권4호
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  • Pages.5-12
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  • 2015
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  • 1229-2427(pISSN)
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  • 2288-646X(eISSN)
한국지반공학회 (Korean Geotechnical Society)
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폐기물 매립장 지반-토목섬유 접촉면의 동적 전단거동 특성

Dynamic Shear Behavior of the Ground-geosynthetics Interface in the Waste Landfill

  • 투고 : 2014.07.02
  • 심사 : 2015.04.01
  • 발행 : 2015.04.30
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초록

최근 늘어나고 있는 폐기물량에 따라 폐기물 매립장의 건설이 증가하고 있으며, 매립장 내 폐기물의 보강 및 보호 목적으로 토목섬유가 널리 사용되고 있다. 토목섬유는 흙과의 접촉면을 형성하는데 폐기물 매립장의 전단 거동에 영향을 미치게 된다. 본 연구에서는 침출수 내의 산성 및 염기성과 같은 성분이 반복 전단하중 상태에서 지반-토목섬유 접촉면의 전단강도 감소에 미치는 영향을 실내 시험을 통하여 분석하였다. 이를 위하여 동적 접촉면 전단시험기를 제작하고 60일, 840일간 수침시킨 토목섬유와 흙 시료를 이용하여 반복 단순전단시험을 수행하였고, 그 결과를 교란상태개념에 기초하여 화학적 인자들에 의한 지반-토목섬유 접촉면의 전단강도 감소 특성을 교란도 함수로써 확인하였다.

The construction of waste landfill sites has been increased due to recent expansion of various waste. Geotextiles are widely used for the purpose of reinforcement and protection of waste inside the landfill. Geotextile affects the shear behavior of waste landfill which forms the contact surface with soil. In this study, the effect of acidic and alkaline components in leachate has been analyzed through the laboratory experiment on the shear stress reduction of the contact surface of ground-geotextile under the cyclic load. For this purpose, a dynamic contact surface shear tester has been manufactured, and cyclic simple shear tests have been performed using geotextile and soil specimen which were immersed in chemical solutions for 60 and 840 days, respectively. Based on the Disturbed State Concept, the characteristics of shear stress on the contact surface of ground-geotextile due to chemical factors have been identified by the disturbance function.

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참고문헌

  1. Armaleh, S.H. and Desai, C.S. (1990), Modeling Include Testing of Cohesionless Soils under Disturbed State Concept, Report to the NSF, Dept. of Civil Engrg. and Engrg. Mech., Univ. of Arizona, Tuscon, Arizona.
  2. Christensen, T.H., Kjeldsen, P., Albrechtsen, H.J., Heron, G., Noelsen, P.H., Bjerg, P.L., and Holm, P.E. (1994), Attenuation of Landfill Leachate Pollutants in Aquifers, Crit, Rev. Environ. Sci. Technol., Vol.24, pp.119-202. https://doi.org/10.1080/10643389409388463
  3. Kwak, C.W., Park, I.J., and Park, J.B. (2013a), "Modified Cyclic Shear Test for Evaluating Disturbed Function and Numerical Formulation of Geosynthetic-Soil Interface Considering Chemical Effect", Geotechnical Testing Journal, Vol.36, No.4, pp.553-567. https://doi.org/10.1520/GTJ20120103
  4. Kwak, C.W., Park, I.J., and Park, J.B. (2013b), "Evaluation of Disturbance Function for Geosynthetic-soil Interface Considering Chemical Reactions Based on Cyclic Direct Shear Tests", Soils and Foundations, Vol.53, No.5, pp.720-734. https://doi.org/10.1016/j.sandf.2013.08.010
  5. Ladd, R.S. (1978), "Preparing Test Specimens Using Undercompaction", Geotechnical Testing Journal, Vol.1, No.1, pp.16-23. https://doi.org/10.1520/GTJ10364J
  6. Park, I.J. and Desai, C.S. (2000), "Cyclic Behavior and Liquefaction of Sand Using Disturbed State Concept", Jouranal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol.126, No.9, pp. 834-846. https://doi.org/10.1061/(ASCE)1090-0241(2000)126:9(834)
  7. Park, I.J. Yoo, J.H., and Kim, S.I. (2000), "Disturbed State Modeling for Dynamic Analysis of Soil-Structure Interface", Journal of KGS, Vol.16, No.3, pp.5-13.
  8. Seo, M.W., Park, J.B., and Park, I.J. (2007), "Evaluation of Interface Shear Strength Between Geosynthetic Under Wet Condition", Soils and Foundations, Vol.47, No.5, pp.845-856. https://doi.org/10.3208/sandf.47.845