한국섬유공학회지 (Textile Science and Engineering)

  • 제43권3호
  • /
  • Pages.147-152
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  • 2006
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  • 1225-1089(pISSN)
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  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
권호 표지

지오그리드의 크리프 한계 변형률에 관한 해석학적 고찰

Analytical Consideration on the Creep-Limited Strain of Geogrids

  • 전한용 (인하대학교 나노시스템공학부) ;
  • 정연인 (계명대학교 토목공학과)
  • Jeon Han-Yong (Division of Nano-Systems Engineering, Inha University) ;
  • Chung Youn-In (Department of Civil Engineering, Keimyung University)
  • 발행 : 2006.06.01
⟨ 이전 논문 다음 논문 ⟩

초록

New procedure for the evaluation of creep reduction factor using performance limit strain concept was introduced and confirmed through the creep test results. To determine the performance limit strain of the textile geogrid used in this study, the Sherby-Dorn Plots were applied and the results were compared with the results that applied existed limit strain criteria (GRI test method GG-4). The creep-limited strain of the geogrid samples that was deter-mined by using the Sherby-Dorm Plots was all 11%. This value is higher than the existing creep-limited stran value of 10%. From this 11% limit strain, the creep reduction factors were calculated at 100,000 hours design. It resulted in 1.45 for all of the geogrid samples (8 t/m, 10 t/m). Finally, when it was compared with the creep reduction factors using 10% criteria, there was slight decrease in reduction factor values of about $0.06{\sim}0.14$.

키워드

참고문헌

  1. J. S. Thornton, 'The Relationship of Creep Curves to Rapid Loading Stress-Strain Curves for Polyester Geogrids', Proc of Geosynthetics '99, 1999, pp. 735-744
  2. M. Koutsourais, 'Correlation the Creep-Strain Component of the Total Strain as a Function of Load-Level for High-Tenacity Polyester Yarns Geogrids and Geotextiles', Proc of Geosynthetics '95, 1995, pp. 989-1002
  3. P. Orsat, 'Study on Creep-Rupture of Polyester Tendons: Full Sacle Tests', Proc of 6th International Conference on Geosynthetics, 1998, pp. 675-678
  4. T. L. Baker, 'Comparison of Results Using the Stepped Isothermal and Conventional Creep Tests on a Woven Polypropylene Geotextile', Proc of Geosynthetics Conference 2001, 2001, pp. 729-740
  5. J. F. Mano and R. A. Sousa, 'Viscoelastic Behaviour and Time-Temperature Correspondence of HDPE with Varying Levels of Process-Induced Orientation', Polymer, 2001, 42, 6187-6198 https://doi.org/10.1016/S0032-3861(01)00090-8
  6. D. Cazzuffi and A. Ghinelli, 'European Experimental Approach to the Tensile Creep Behaviour of High Strength Geosynthetics', Proc of Geosynthetics '97, 1997, pp. 263-266