KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Characteristics of Behavior of Steel Sheet Pile installed by Vibratory Pile Driver

진동타입기에 의해 시공되는 강널말뚝의 거동특성

  • 이승현 (선문대학교 토목공학과) ;
  • 김병일 (명지대학교 토목환경공학과) ;
  • 김주철 (삼성물산(주) 건설부문 토목ENG팀) ;
  • 김정환 (삼성물산(주) 건설부문 해외토목사업부)
  • Received : 2009.09.14
  • Accepted : 2009.12.07
  • Published : 2010.02.28
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Abstract

Instrumented steel sheet piles being driven by vibratory pile driver were installed in granular soil deposit and behaviors of the sheet piles were investigated. One of the instrumented steel sheet pile was installed without clutch and the other was installed with clutch. Sheet pile with clutch means that of installed in connection with pre-installed sheet pile. Penetration rates of sheet piles measured from depth measuring drum has shown that interlock friction had great effect on penetration speed of sheet pile. Clutch friction shows irregular distribution along the depths of penetration and its magnitude was estimated as 19.1kN/m. According to the accelerations obtained from accelerometer, it was seen that steel sheet pile behaviored nearly as a rigid body. Efficiency factor of an isolated sheet pile was 0.42 and that of the connected sheet pile was 0.71. Shapes of dynamic load transfer curves obtained from analysis of measuring devices was similar to those suggested by Dierssen.

사질토지반에 진동타입되는 강널말뚝의 거동을 파악하고자 계측기를 부착한 강널말뚝을 각각 1본씩 단독시공 및 연결시공하여 현장시험을 수행하였다. 깊이측정장치를 통해 구한 깊이에 따른 관입속도결과에 따르면 연결부 마찰의 영향이 강널말뚝의 관입속도에 큰 영향을 미친다는 사실을 알 수 있었다. 연결시공시 연결부 마찰은 관입깊이에 대해 불규칙한 양상을 보여주었으며, 그 크기는 19.1kN/m이었다. 진동타입시 강널말뚝은 거의 강체로 거동함이 계측결과를 통해 확인되었다. 단독시공시의 효율계수는 0.42이었으며 연결시공시의 효율계수는 0.71이었다. 계측자료로부터 유도한 하중전이곡선의 양상은 Dierssen이 제안한 그것과 가장 유사하였다.

Keywords

References

  1. 이승현, 이종구, 유완규, 김병일(2007) 모래지반에 대한 강널말뚝의 진동항타거동 연구. 한국지반공학회논문집, 한국지반공학회, 제23권, 제4호, pp. 79-90.
  2. Barkan, D. D. (1957) Foundation engineering and drilling by vibration method. Proc. of Fourth Int. Conf. on Soil Mech. and Found. Engrg., pp. 3-7.
  3. Dierssen, G. (1994) Ein bodenmechanisches Modell z ur Beschreibung des Vibrations-rammens in korningen Boden. Ph.D. Dissertation, University of Karlsruhe, Germany.
  4. Ferron, Daniel (2001) Eindringveralten von Spundwandenbohlen und Rammbarkeit von Boden bei der Vibrationsrammung. Diplomarbeit Nr. 326653, Fachgeiet Bodenmechanik und Grundbau, Univeritat Kaiserslautern, pp. 153.
  5. Holeyman, Alain E. (1993) HYPERVIB1, An analytical modelbased computer program to evaluate the penetration speed of vibratory driven sheet piles. Research report prepared for BBRI, June, pp. 23.
  6. Jonker, G. (1987) Vibratory pile driving hammers for oile installation and soil improvement projects. Proc. of Nineteenth Annual Offshore Technology Conf., Dallas, Texas, OTC 5422, pp. 549- 560.
  7. Moulai-Khatir, Reda., O'Neill, Michael W., and Vipulanandan, C. (1994) Program VPDA Wave Equation Analysis for Vibratory Driving of Piles. Report to the U.S. Army Corps of Engineerings Waterways Experiments Station., Dept of Civil and Environmental Engineering, UHCE 94-1, Univ. of Houston, Texas, August 1994, pp. 187.
  8. Rodger, A.A., Littlejohn, G. (1980) A study of vibratory driving in granular soils. Geotechnique, Thomas Telford Ltd, Vol. 30, No. 3, pp. 269-293.
  9. Rao., Pramod M. (1993) Effect of pile geometry and soil saturation in the behavior of nondisplacement piles installed by vibration. MSc thesis presented to the Faculty of the Dept. of Civil and Environmental Engineering, University of Houston, Texas.
  10. Vanden Berghe, J-F. (2001) Sand strength degradation within the framework of vibratory pile driving. Ph.D. Thesis presented to the Faculty of Applied Science, Universite chatolique de Louvain., Belgium.
  11. Viking, K. (2002) Vibro-driveability, -A field study of vibratory driven sheet piles in non-cohesive soils. Ph.D thesis 1002, Div. of Soil and Rock Mechanics, Royal Institute of Technology, Stockholm, Sweden, pp. 281.
  12. Viking, K. and Bodare, A. (1998) Laboratory studies of dynamic shaft resistance response of a vibro-driven model pile in granular soil by varying the relative density. Proc. of XII European Conference on Soil and Foundation Engineering, pp. 6.
  13. Warrington, DON. C. (1989) Driveability of piles by vibration. Paper presented at Deep Foundation Institute 14th Annual Member Conf., pp. 139-154.