한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)

한국지반공학회 (Korean Geotechnical Society)
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3차원 유한요소법을 이용한 강관합성 말뚝재료의 수평저항력 고찰

Study on lateral resistance of steel-concrete composite drilled shafts by using 3D FEM

  • 이주형 (한국건설기술연구원 국토지반연구부) ;
  • 신휴성 (한국건설기술연구원 국토지반연구부) ;
  • 최상호 (한국건설기술연구원 국토지반연구부) ;
  • 박재현 (한국건설기술연구원 국토지반연구부) ;
  • 정문경 (한국건설기술연구원 국토지반연구부) ;
  • 곽기석 (한국건설기술연구원 국토지반연구부)
  • Lee, Ju-Hyung (Geotechnical Engineering Research Dept., Korea Institute of Construction Technology) ;
  • Shin, Hyu-Soung (Geotechnical Engineering Research Dept., Korea Institute of Construction Technology) ;
  • Choi, Sang-Ho (Geotechnical Engineering Research Dept., Korea Institute of Construction Technology) ;
  • Park, Jae-Hyun (Geotechnical Engineering Research Dept., Korea Institute of Construction Technology) ;
  • Chung, Moon-Kyung (Geotechnical Engineering Research Dept., Korea Institute of Construction Technology) ;
  • Kwak, Ki-Seok (Geotechnical Engineering Research Dept., Korea Institute of Construction Technology)
  • 발행 : 2008.10.10
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초록

Steel-concrete composite columns are popular for superstructures of bridges, and the outside steel attached to the shaft increases the shaft resistance due to confining concrete. In this study, lateral resistance of steel-concrete composite drilled shafts was evaluated quantitatively based on numerical analysis when steel casings are used as structural elements like composite columns. Ultimate lateral resistance of composite drilled shafts with various diameters was numerically calculated through 3D finite element analysis. For that, elasto-plastic model with perfectly plasticity is involved to capture the ultimate load. A commercial FEM program, MIDAS-GTS, is used in this study. Real field conditions of the West Coast, Korea were considered to set up the ground conditions and pile lengths required for this parametric studies. Detailed characteristics of the stress and displacement distributions are evaluated for better understanding the mechanisms of the composite shaft behavior.

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