INFLUENCE OF INDIVIDUAL PARAMETERS ON THE PILE GROUP EFFICIENCY

Geotehnički aspekti građevinarstva i zemljotresno inženjerstvo 2025, Vrnjačka Banja, 15 – 17. oktobar 2025. (pp. 380-390) 

АУТОР(И) / AUTHOR(S): Nikolay Milev  

Download Full Pdf   

DOI: 10.46793/GEOAG25.380M

САЖЕТАК / ABSTRACT:

Single piles are relatively well studied. When greater load-bearing capacity is required, piles are grouped together. When  vertical compression force is applied on the group, not all piles are loaded equally. In fact, the sum of the load-bearing capacities of all piles in a group is less than the sum of the load-bearing capacities of all single piles. This effect is known as pile group efficiency and depends on many factors, which are discussed in this article.

КЉУЧНЕ РЕЧИ / KEYWORDS:

pile group, pile, efficiency, skin friction, soil parameters

ПРОЈЕКАТ / ACKNOWLEDGEMENT:

REFERENCES / ЛИТЕРАТУРА:      

  • Guo,W D.(2012), Theory and Practice of Pile Foundations,London https://doi.org/10.1201/b12980
  • Sayed S.& Bakeer (1992), Efficiency Formula for Pile Group, Journal of Geotechnical Engineer, https://doi.org/10.1061/(ASCE)0733-9410(1992)118:2(278)
  • Markov, I. (2024). Еfficiency of pile group for compressive load – state of the art: part1 – analytical expressions, ХХIV International scientific conference VSU, 10-12 October 2024, Sofia, Bulgaria 157-166 p.  ISSN: 1314-071X
  • Markov I (2024). Efficiency of pile group for compressive load: state of the art: part2 – empirically obtained results,  ХХIV International scientific conference VSU’, 10-12 October 2024, Sofia, Bulgaria 157-176 p.  ISSN: 1314-071X
  • Kerenchev N., I. Markov (2016), Determining the axial bearing capacity of pile based on common  methods and comparison with pile load test, proceedings of the 3rd international conference  Vietgeo2016, 22-23 November 2016 “Geological and geotechnical engineering in response to climate change and sustainable development of nfrastructure”126-130 p.
  • Topalska, M.,(2023) Dynamic Soil Pore Water Pressure due to Earthquake Loading, International Scientific Conference Geotechnical Aspects of Civil Engineering and Earthquake Engineering, Association of Civil Engineers of Serbia, pp. 331-338, ISBN 978-86-88897-17-4
  • Markov, I.(2023) ,Analysis of a two pile frame for a horizontal force, National transport infrastructure conference with international https://iopscience.iop.org/article/10.1088/1757-899X/1297/1/012007/meta
  • Markov, I.(2024), Novi kontseptsii pri proektiraneto na ukrepitelni saorazhenia saglasno  Evrokod 7 – vtoro pokolenie (in bulgarian) Godishnik na Universiteta po arhitektura, stroitelstvo i geodezia, Annual of the university of architecture, civil engineering and geodesy  Volume 58, ISSUE 10 143-153 p., DOI: 10.71167/uaceg.2025.580110
  • O’Neill, M. W. (1983), Group action in offshore piles, Proc Conference on Geotechnical Practice in Offshore Engineering, Austin, Texas, 27–29 April 1983 P25–64. Publ New York: ASCE, 1983, https://doi.org/10.1016/0148-9062(85)92235-1
  • Hannigan P. J., Rausche F.,  Likins G. E., Robinson B. R., Becker M. L, FHWA-NHI-16-009 Design and Construction of  Driven Pile Foundations – Volume I
  • Barbour S.L., Bathurst R.J., Boone S., (2006), Canadian Foundation Engineering Manual.
  • Markov, I. Distribution of skin friction along the length of a pile under axial tension load, (2025) Proceedings of International Scientific Conference on Architecture and  Civil engineering ArCivE 2025 31 May 2025, Varna, Bulgaria, ISSN 2535-0781, Vol. 5 – 2025
  • Coduto D.,Kitch ,Yeung M.(2015) Foundation Design: Principles and Practices 3rd Edition , ISBN0133411893.
  • Hannigan P.J., Goble G.G., Likins G.E., and F. Rausche, (2006) Design and Construction of Driven Pile Foundations Reference Manual – Volume I,
  • Wenlin X., Zihang L., Hu D. and Fen Li, Da, Performance Analysis of Pile Group Installation in Saturated Clay, https://doi.org/10.3390/app14188321
  • LeKoubya A., (2016) The effects of installation order on the response of a pile group in silica sand, The Japanese Geotechnical Society „Soils and Foundations“
  • Hanna A., Morcous G.,(2004) Efficiency of pile groups installed in cohesionless soil using artificial neural, Canadian Geotechnical Journal, 2004,doi: 10.1139/T04-050
  • Fotev, D., N. Kerenchev (2025) General analysis of newly emerged methods in Bulgarian engineering practice for stabilizing unstable slopes using piles and concentric anchors. Engineering Geology and Hydrogeology, 39, 127–138 (in Bulgarian), https://doi.org/10.52321/igh.39.1.127.
  • Markov, I. Ustroystvo za izpitvane na ankeri v usloviyata na statichno i dinamicheno natovarvane,,Annual of the university of architecture, civil engineering and geodesy.Volume XLVIII, 2015, issue VIII-B, 35-40p.
  • Markov I., Totsev A., Influence of Dynamic Load on the Ground Anchors Bearing Capacity, Proceedings of the 24th European Young Geotechnical Engineers Conference (EYGEC), Durham, UK Osman, A.S. & Toll, D.G. (Eds.) 2015 ISBN 978-0-9933836-01.