한국지반공학회지:지반 (Geotechnical Engineering)

한국지반공학회 (Korean Geotechnical Society)
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원심모형실험에 의한 강관말뚝의 수평거동연구

A Study on the Lateral Behavior of Steel Pipe Piles in Centrifugal Test

  • 김영수 (경북대학교 공과대학 토목공학과) ;
  • 서인식 (경동전문대학 토목과, 경북대학교 대학원 토목공학과) ;
  • 김병탁
  • 발행 : 1996.12.01
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초록

본 논문은 말뚝의 선단과 두부조건이 자유이며 수평하중을 받고 있는 수직말뚝의 모형실험에 대한 결과를 보여주고 있다. 모형실험은 원심모형실험기(동경공업대학 Markll)를 이용하여 현장응력상태하의 사질토지반에서 실시되었으며, 중력가속도, 휭강성, 그리고 지반의 상대밀도를 달리하여 실험을 실시하였다. 본 연구의 목적은 Toyoura모래에 근입된 말뚝의 거동에 대해 중력가속도, 횡강성, 그리고 상대밀도의 영향과 여러학자(Murchison & O'Neill, Reese et at., Scott, Det Norske Vertas, Kondner)들에 의해 제안된 p-y곡선의 적용성 검토에 있다. p-V곡선에 의해 프로그램이 만들어졌으며, 이 프로그램으로 말뚝의 수평변위와 모멘트 그리고 지반반력 분포를 예측할 수 있다. 실측된 거동과 예측된 거동의 비교에서, Murchison & O'Neill과 Kondnor에 의해 제안된 p-y곡선식의 결과가 다른 식들보다 실측결과와 일치하였다.

This paper presents results from a series of model tests on laterally loaded single piles with both free-head and free-tip conditions. Model tests, using a centrifuge apparatus (middie size, Mark II in 7.1.7.) were carried out in sand based on the variation of different gravity acceleration and flexural stiffness of the pile and relative density of the soil. The aims of this study are to estimate the effect of gravity acceleratioil, flexordis stiffness, and relative density on the behavior of the pile embedded in Toyoura sand and to evaluate the applicability of a family of the p-y curves which was presented by several reseachers(Mur chison & O'Neill, neese et n., scott, Det worske veritas, nondner). The Program is deviloped by using p-y curves, and it can be used for the calculation of the displacement distri bution, bending moment distribution, and soil reaction distribution. By comparing meas ured responses with predicted one it is shown that the results of the p-y curve equation presented by Murchison & O'Neill and Kondner agreed with the general trend observed by the centrifuge tests much better than the numerical solutions predicted by the other sets of p -y curves.

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참고문헌

  1. 1995년도 대한토목학회발표논문(Ⅲ) 사질토지반에서 수평 정적하중에 의한 강관말뚝의 거동에 관한 원심모형실험 연구 김병탁;김영수;손원일
  2. 第28回土質工學硏究發表會 水平力を受ける鋼管杭とコソク リ_ト杭の終局狀態に關する遠心模型實驗 Kimura(et al.)
  3. 第28回土質工學硏究發表會 三軸壓縮試驗による豊潽砂の 彈性ヤソク係數の測定 Mitachi(et al.)
  4. Geotechnique v.28 no.3 The Behavior of Axially and Laterally Loaded Single Piles Embedded in Non-homogeneous Soils Banerjee, P.K.;Davies, T.g.
  5. Can. geptech. J. v.24 Nonlinear Analysis of Laterally Loaded Piles in Cohesionless Soils Budhu, M.;Davies, T.g.
  6. Appendix F: Foundations Rules for the design, construction and inspection of offshore structures Det Norske Veritas
  7. Piling Engineering Fleming(et al.)
  8. Can. Geotech. J. v.29 Centrifugal Testing of Laterally Loaded Piles in Sand Georgiadis(et al.)
  9. ASCE v.89 no.SM1 Hyperbolic Stress Strain Response: Cohesive Soils Konder, R.L.
  10. ASCE v.105 no.GT2 Static and Dynamic Laterally Loaded Floating Piles Kuhlemeyer, R.L.
  11. Analysis and design of pile foundations Evaluation of p-y relationships in cohesionless soils Murchison, J.M.;O'Neill, M.W.
  12. Numerical Methods in Offshore Piling 3rd International Conference Theoretically Based BEF Laterally Loaded Pile Analysis Norris, G.
  13. ASCE v.97 no.SM5 Behavior of Laterally Loaded Piles: I-Single Pile Poulos, H.G.
  14. Geotechnique v.31 no.2 The Reponse of Flexible Piles to Lateral Loading Randolph, M.F.
  15. Proc. of 6th Offshore Technology Conference, OTC2080 Analysis of Laterally Loaded Piles in Sand Reese(et al.)
  16. Centrifuges in Soil Mechanics An Introduction to Centrifuge Modeling Schofield, A.N.
  17. Research Report, OSAPR Project 13 Analysis of centrifuge pile tests: simulation of pile driving Scott, R.F.
  18. Can. Geotech. J. v.29 Lateral Pile Response to Monotonic Pile Head Loading Yan, L.;Byrne, P.M.