한국지반공학회논문집 (Journal of the Korean Geotechnical Society)

  • 제22권3호
  • /
  • Pages.5-11
  • /
  • 2006
  • /
  • 1229-2427(pISSN)
  • /
  • 2288-646X(eISSN)
한국지반공학회 (Korean Geotechnical Society)
권호 표지
DOI QR코드

DOI QR Code

풍화암과 연암에 근입된 대구경 말뚝의 축하중지지 거동에 관한 연구

Study on Large Diameter Steel-cased Piles Socketed in Weathered and Fresh Rocks

  • Nam Moon-Seok (Dept. of Geotechnical Engrg., Highway & Transportation Technology Institute, Korea Highway Corporation) ;
  • Lee Min-Hee (Dept. of Civil & Environmental Engrg., Kyung Sung Univ.) ;
  • Choi Yong-Kyu (Dept. of Civil & Environmental Engrg., Kyung Sung Univ.)
  • 발행 : 2006.03.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

광안대교에 설치된 두개의 대구경 말뚝(TS-1과 TS-2)에 대하여 최대 2000톤의 하중을 재하하여 정재하시험을 수행하였다. 시험 말뚝 TS-1의 경우는 연암에 근입되었고 시험 말뚝TS-2의 경우는 풍화암에 근입되었다. 재하시험 결과에 의하면, 지지층과 상관없이 시험말뚝 TS-1과 TS-2 양쪽 경우다 대부분의 하중이 풍화암에 의해 지지되었다. 추가적으로 펜타곤3D와 ROCKET 프로그램으로 수치해석을 수행하였다. 본 연구에 의하면 풍화암이 깊게 발달되어 말뚝 시공상 어려움이 있을 경우, 풍화암도 대안의 지지층으로 고려되어질 수 있다.

Two large diameter steel cased piles (TS-1 and TS-2) were installed and load-tested with the maximum load of 2000 ton at Kwang-An grand bridge. One of the test piles (TS-1) was socketed into the fresh rock and the other test pile (TS-2) was socketed into the weathered rock. Most loads were carried by the weathered rock layer at the maximum applied load for the test piles. In addition, numerical studies were performed using PENTAGON 3D and ROCKET. Based on this study, the weathered rock layer provided sufficient side resistances and possibility of an alternative embedded layer if weathered rocks are deeply layered over fresh rock, which caused difficulties and cost in construction.

키워드

참고문헌

  1. American Society of Testing and Materials (2000), 'Annual Book of ASTM Standards', Vol. 4.08, Soils and Rock, ASTM, West Conshohocken, Philadelphia
  2. Engineering Technology Research Institute (2002), 'Load Tests and Numerical Studies for the Pile Foundation at Kwang-An Grand Bridge', Kyungsung University, Busan, Korea
  3. Korean Society of Civil Engineers and Korean Traffic Safety Association (2001), 'Bridge Design Handbook-Foundations', Seoul, Korea
  4. Lee, KW (2002), 'Axial Behavior of Large Diameter and Rock Socketed Piles', Master Thesis, Kyungsung University, Busan, Korea
  5. Jeong, CK (2000), 'Load Distribution Behavior of Large Diameter and Rock Socketed Piles', Master Thesis, Dong-A University, Busan, Korea
  6. Seidel, J. P. (2000), ROCKET Executable File, Department of Civil Engineering, Monash University, Melbourne, Victoria, Australia
  7. Emerald Soft Inc. (1998), 'PENTAGON 3D Manual', Emerald Soft Inc., Seoul, Korea