한국지반공학회논문집 (Journal of the Korean Geotechnical Society)

  • 제21권6호
  • /
  • Pages.53-65
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  • 2005
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  • 1229-2427(pISSN)
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  • 2288-646X(eISSN)
한국지반공학회 (Korean Geotechnical Society)
권호 표지

토목섬유로 보강된 구조물의 프리스트레스효과

Pre-stress Effect of Geosynthetics-reinforced Soil Structure

  • 김은라 (전북대학교 토목공학과 공업기술연구센터 연구원) ;
  • 강호근 (경상대학교 기계항공공학부, 해양산업연구소)
  • Kim Eun-Ra (Dept. of CivilvEngrg., Reserch Center of Industrial Technology, Chonbuk National) ;
  • Kang Ho-Keun (School of Mechanical and Aerospace, Institute of Marine Industry, Cyeongsang National Univ.)
  • 발행 : 2005.08.01
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초록

본 연구는 토목섬유 보강토 구조물의 보강 메카니즘을 규명하고자 하는 목적으로 실시하였으며, 여기서 보강 메카니즘은 전단에 의한 다짐토의 체적 팽창(부의 다일러턴시)을 토목섬유에 의해 구속 억제하는 과정에서 생성되는 효과로 간주하고 있다. 토목섬유의 보강효과를 높이는 방법으로 프리스트레스(pre-stress)공법을 도입하여 토목섬유 보강토 구조물의 현장실험을 소개하고, 유한요소해석을 이용하여 프리스트레스에 의한 보강효과를 검토하였다. 또한 다짐토의 탄소성 모델과 이러한 모델에 필요한 초기 입력값의 결정 방법들이 제시되었다. 마지막으로, 유한요소(FEM)해석을 통해 얻어진 결과들을 현장실험의 결과와 비교 분석하였다.

This paper presented a mechanism of the soil structure reinforced by geosynthetics, in which the reinforcing mechanism is treated as the effect arising from the reinforcement process to prevent the dilative deformation of soil under shearing. A full-scale in-situ model test was carried out by introducing the prestress method to enhance the geosynthetic-reinforcement, and the prestress effect through the FEM is also examined. The elasto-plastic model and the initial parameters needed in the FEM are presented. Moreover, the theoretical prediction is compared with the experimental results, which were obtained by a full-scale in-situ model test.

키워드

참고문헌

  1. 김은라, 강호근 (2004a), '다짐토의 다일러턴시 특성을 고려한 역경사형 토목섬유 보강토 구조물의 파괴 거동 분석', 한국지반공학회논문집, 20권, 19호, pp.65-76
  2. 前川隆志, 平田昌史, 山上向幸, 森影篤史, 横田善弘, 太田秀樹 (1997), 'ジオシンセティツクス補強盛土の現場實驗-予備實驗', 予備解析-, 第32回地盤工學研究發表會, pp.2537-2538
  3. 關口秀雄(1993), 講座 'カムクレイに學ぶ' 6.カムクレイのその 後の發展, 土質エ學會誌 土と基礎, VoI.41, No.11, pp.97-102
  4. 野室明久, 平田昌史, 山上尙幸, 熊谷幸博, 笠原清磨, 太田秀樹 (1997), 'ジオシンセティックス補強盛土の現場實驗-實大實驗-', 第32回地盤工學研究發表會, pp.2539-2540
  5. Hirata, M., lizuka, A., Ohta, H., Yamakami, T., Yokota, Y., and Ohmori, K. (1999), 'The numerical simulation of geosyntheics-reinforced soil structure using elasto-plastic dilatancy models', Journal of JSCE, No.631/V-48, pp.179-192 (in Japanese)
  6. Iizuka, A. and Ohta, H. (1987), 'A determination procedure of input parameters in elasto-viscoplastic finite element analysis', Soils and Foundations, Vol.27, No.3, pp.71-87 https://doi.org/10.3208/sandf1972.27.3_71
  7. Jaky, J. (1944), Tarajmechanika, J. Hungarian Arch. And Engs., Budapest, pp.355-358
  8. Karube, D. (1975), 'Unstandardized Triaxial Testing Procedures and Related Subjects for Inquiry', Proc. of 20th Symposium on Geotechnical Engineering, pp.45-60 (in Japanese)
  9. Kim, E. R., lizuka, A., Kim, Y. S., and Park, H. (2004b), 'A Study on the Confining Effect due to Geosynthetics Wrapping Compacted Soil Specimen', Jour. of the KGS, Vol.20, No.5, pp.5-16
  10. Kim, E. R., Kang, H. K., and Kim, Y. S. (2004c), 'An application of Elasto- Plastic Model to Geosynthetics-Reinforced Soil', KSCE Journal of Civil Engineering, Vol.8, No.5, pp.497-503
  11. Muramoto, K., Tateyama, M., Uchimura, T., and Tatsuoka, F. (1996), 'Fundamental properties of preload/prestressed geosynthetic-reinforced soil retaining wall', InPTRI REPORT, Vol.10, No.12 (in Japanese)
  12. Ohta, H. (1971), 'Analysis of Deformation of Soils Based on the Theory of Plasticity and Its Application to Settlement of Embankments', Thesis of Doctor of Engineering, Kyoto University
  13. Sekiguchi, H. and Ohta, H. (1977), 'Induced anisotropy and time dependency in clays', Proc. Specialty Session 9, 9th Int. Conf. Soil Mechanics and Foundation Engineering, Tokyo, pp.229-239
  14. Sekiguchi, H. (1977), 'Rheological characteristics of clays', Proc. Specialty Session 9th ICSMFE, pp.289-292
  15. Shibata, T. (1968), 'On the Volume Change of Normally Consolidated Clays', Technical Report of Disaster Prevention Research Institute, Kyoto University, Vol.6, pp.128-134 (in Japanese)
  16. Uchimura, T., Tatsuoka, F., Sato, T., and Tateyama, M. (1995a), 'Working principles of preloaded and prestressed reinforced soil retaining walls and their full-sacle model test program', In Institute of Industrial Science, University of Tokyo, Vol.47, No.8 (in Japanese)
  17. Uchimura, T., Tatsuoka, F., Koseki, J., Sato, Y., Kodaka, T., and Tateyama, M. (1995b), 'A full-scale model test of preloaded and prestressed reinforced soil retaining walls', In Institute of Industrial Science, University of Tokyo, Vol.47, No.9 (in Japanese)