Investigation of effectiveness of preloading method for existing foundation underpinning by centrifuge tests

Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 62)


A conceptual preloading method was proposed for reducing loads carried by exiting piles by means of transferring partial loads on existing piles to underpinning piles. For investigation of the effectiveness of preloading method, a model preloading apparatus used for centrifuge tests was developed and a series of tests was performed on an underpinned foundation. In the centrifuge test, a pre-load was firstly applied to the underpinning pile to verify the load transfer effect of the preloading apparatus. Then additional loads were applied to the foundation to evaluate the load sharing behaviour of existing and underpinning piles. The feasibility of the preloading apparatus based on the preloading concept was verified through the experimental results. Moreover, under additional loading, the preloading value affected the load sharing capacity of existing and underpinning piles. Therefore, in the design of underpinning considering preloading, a proper pre-load range which is less than both linear pull-out behaviours of existing foundations and linear compressive behaviour of underpinning piles was suggested.


pile foundation underpinning preloading method centrifuge test vertical extension 


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This research was funded by (19RERP-B099826-05) from Residential Environment Research Program (RERP) funded by Ministry of Land, Infrastructure and Transport of Korean government.


  1. Alawneh, A.S., Malkawi, A.I. and Al-Deeky, H. (1999). Tension tests on smooth and rough model piles in dry sand. Canadian Geotechnical Journal, Vol. 36, No. 7, pp. 746-753.Google Scholar
  2. Armour, T., Groneck, P., Keeley, J., and Sharma, S. (2000). Micropile Desgin and Construction Guidelines-Implementation Manual. FHWA-SA-97-070, Federal Highway Administration, Washington, DC.Google Scholar
  3. Bruce, D. (1988). Aspects of minipiling practice in the United States. J. Ground Eng. 21, No. 8, pp. 20-33.Google Scholar
  4. El Naggar, M.H. and Sakr, M. (2000). Evaluation of Axial Performance of Tapered Piles from Centrifuge Tests. Canadian Geotechnical Journal, Vol. 37, No. 6, pp. 1295-1308.Google Scholar
  5. EN, B.S. (2004). Eurocode 7: Geotechnical Design-Part 1: General Rules. British Standards: London, UK.Google Scholar
  6. Horikoshi, K., Matsumoto, T., Hashizume, Y., Watanabe, T., and Fukuyama, H. (2003). Performance of Piled Raft Foundations Subjected to Static Horizontal Loads. International Journal of Physical Modelling in Geotechnics, No. 2, pp. 37-50.Google Scholar
  7. Juran, I., Benslimane, A. and Hanna, S. (2001). Engineering Analysis of Dynamic Behaviour of Micropiles Systems. Transportation Research Record: Journal of the Transportation Research Board, Vol. 1772, pp. 91-106.Google Scholar
  8. Kulhaway, F.H., Kozera, D.W. and Withiam, J.L. (1979). Uplift testing of model drilled shafts in sand. Journal of Geotechnical and Geoenvironmental Engineering, 105. ASCE1403 ProceedingGoogle Scholar
  9. Kulhaway, F.H. (1985). Drained uplift capacity of drilled shafts. In Proceedings, 11th International Conference on Soil Mechanics and Foundation Engineering, pp. 1549-1552.Google Scholar
  10. Kim, D.S., Kim, N.R., Choo, Y.W., and Cho, G.C. (2013). A Newly Developed State-of-the Art Geotechnical Centrifuge in Korea. KSCE Journal of Civil Engineering 17, No. 1, pp. 77-84.Google Scholar
  11. Lizzi, F. (1980). The use of root pattern piles in the underpinning of monuments and old buildings and in the consolidation of historic centres. J.L’Industria Costruzioni, 110, 25.Google Scholar
  12. Lutenegger, A.J. and Gerald A. M. (1994). Uplift capacity of small-diameter drilled shafts from in situ tests. Journal of Geotechnical Engineering, Vol. 120, No. 8, pp. 1362-1380.Google Scholar
  13. MOLIT (2013). Housing Act, Korea Ministry of Land, Infrastructure and Transport, pp.2.Google Scholar
  14. Mayerhof, G.G. (1976). Bearing Capacity and Settlement of Pile Foundations. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 102, pp. 195-228.Google Scholar
  15. Jang and Han (2018). Analysis of the Shape Effect on the Axial Performance of a Waveform Micropile By Centrifuge Model Tests. Acta Geotechnica, Vol. 14, No. 2, pp. 505-518.Google Scholar
  16. Terzaghi, F.T. and Peck, R.B. (1967). Soil Mechanics in Engineering Practice. 2rd ed. John Wiley and Sons, New York.Google Scholar
  17. Wang, C.C., Han, J.T., Jang, Y.E., Ha, I.S. and Kim, S.J. (2018). Study on the Effectiveness of Preloading Method on Reinforcement of the Pile-Foundation by 3D FEM Analysis. Journal of the Korean Geotechnical Society, Vol. 34, No. 1, pp. 47-57.Google Scholar
  18. Wood, D.M. (2004). Geotechnical Modelling. 1st ed. CRC Pres, Boca Raton, FL.Google Scholar

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© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Korea University of Science & TechnologyGoyaniSouth Korea
  2. 2.Korea Institute of Civil Engineering and Building TechnologyGoyangSouth Korea
  3. 3.Ulsan National Institute of Science and TechnologyUlsanSouth Korea

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