Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
권호 표지
DOI QR코드

DOI QR Code

Numerical Analyses on Moment Resisting Behaviors of Electric Pole Foundations According to Their Shapes

기초형상에 따른 전철주기초 모멘트 저항거동에 관한 수치해석 연구

  • 이수형 (한국철도기술연구원 광역도시교통연구본부)
  • Received : 2013.08.06
  • Accepted : 2013.11.07
  • Published : 2013.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

Electric pole foundations for overhead catenary system of railroad should be designed so that they may resist significant overturning moment but relatively small vertical forces. Also they should have proper shapes to be installed at restricted narrow areas adjacent to railroad track. In this paper the moment responses of rectangular pole foundations according to their shapes were investigated numerically. A three-dimensional finite element method was developed and verified so that the numerical behaviors of the foundation resisting the overturning moments were compared reasonably well with those from an existing real-scale load test. The influences of aspect ratio, varying section with depth and loading directions for rectangular section were investigated using the developed numerical method. From the numerical results, the optimized shapes of pole foundation for more effective and economic installation adjacent to railroad track are proposed.

가공 전철선의 지지를 위하여 철도선로에 근접하여 설치되는 전철주기초는 풍하중에 의한 매우 큰 전도 모멘트에 저항하도록 설계되어야 하며 동시에 철도선로 인근의 좁은 공간에 설치될 수 있는 형상을 가져야 한다. 본 논문에서는 수치해석을 통해 전철주기초의 형상에 따른 모멘트 저항거동을 평가하였다. 전도에 저항하는 전철주기초의 거동 특성을 모사할 수 있는 3차원 유한요소해석기법을 개발하였으며, 해석결과를 기존의 실물 재하시험 결과와 비교하여 그 유효성을 확인하였다. 세장비, 깊이에 따른 단면 변화, 직사각형 단면의 하중재하 방향 등을 변화시킨 다양한 조건의 기초에 대하여 모멘트 저항거동을 분석하였으며, 그 결과를 이용하여 철도선로에 근접하여 보다 효율적이고 경제적으로 시공이 가능한 전철주기초 형상을 제시하였다.

Keywords

References

  1. Balfour Beatty Construction Ltd. (1986), Report on foundation design for overhead catenary system. Tuen Mun LRT, Interim report, BBPCL.
  2. Bowles, J. E. (1988), Foundation analysis and design, 4th edition, McGraw-Hill
  3. Brinch Hansen, J. (1961), "The ultimate resistance of rigid piles against transversal forces", The Danish Geotechnical Institute, Bulletin No. 12, Copenhagen, pp.1-9.
  4. Broms, B.B. (1964), "Lateral resistance of piles in cohesionless soils", Journal of Soil Mechanics and Foundations Division, ASCE, Vol.90, No.3, pp.79-99.
  5. Dickin, E. A. and Nazir, R. (1999), "Moment-carrying capacity of short pile foundations in cohesionless soil", Journal of Geotechnical and Geoenvironmental Eng., ASCE, Vol.125, No.1, pp.1-10. https://doi.org/10.1061/(ASCE)1090-0241(1999)125:1(1)
  6. Dickin, E.A. and Laman, M. (2003), "Moment Response of Short Rectangular Piers in Sand", Computers and Structures, Vol.81, No.30, pp.2717-2719. https://doi.org/10.1016/S0045-7949(03)00337-7
  7. Korea Rail Network Authority (2004), Railway design manual (Electric : Catenary Line), Korea Rail Network Authority, Daejeon.
  8. Korea Rail Network Authority (2009), Report on Electrification of Railway Line in 2009, Korea Rail Network Authority, Daejeon.
  9. Korea Transport Institute & KRTC (2009), Research on master plan of electrification of national railway network, Ministry of Transport and Maritime Affairs.
  10. Kulhawy, F. H., Trautmann, C. H., Beech, J. F., O'Rourke, T. D., McGuire, W., Wood, W. A., and Capano, C. (1983), Transmission line structure foundations for uplift-compression loading, Rep. No. EL-2870, Electric Power Research Institute, Palo Alto, Calif.
  11. Mohammadi, S.D., Nikoudel, M.R., Rahimi, H., and Khamehchiyan, M. (2008), "Application of the Dynamic Cone Penetrometer (DCP) for determination of the engineering parameters of sandy soils", Engineering Geology, Vol.101, pp.195-203. https://doi.org/10.1016/j.enggeo.2008.05.006
  12. UIC/ORE (1957), Calculation of catenary masts and foundations. Interim Report No. 1, International Union of Railways/Office for Research and Experiments, Utrecht.
  13. Vermeer, P. A. and De Borst, R. (1984), "Non-associated plasticity for soil", Concrete and rock, Heron, Vol.29, No.3, pp.1-65.

Cited by

  1. Seismic Performance of the Catenary System Using Fragility Analysis vol.18, pp.2, 2018, https://doi.org/10.9798/KOSHAM.2018.18.2.39
  2. 강관말뚝의 제원이 말뚝거동에 미치는 영향에 관한 수치해석 연구 vol.33, pp.5, 2017, https://doi.org/10.7843/kgs.2017.33.5.37
  3. 말뚝 인발모형실험에 대한 유한요소해석의 적용성 평가 vol.18, pp.2, 2013, https://doi.org/10.12814/jkgss.2019.18.2.011