Experiences with Tip Post Grouted Drilled Shafts in China

  • Zhihui Wan
  • Guoliang Dai
Conference paper
Part of the Sustainable Civil Infrastructures book series (SUCI)


It is known that the tip post-grouting technology can enhance the bearing capacity of drilled shaft and can reach the purpose of optimizing shaft length, and reducing cost. In this work, the key points of design and construction technology for tip post grouting in Chinese practices are introduced primarily. Furthermore, the mechanism of improvement for tip post-grouting drilled shafts is analyzed on the basis of the strengthening mechanism of tip post grouting, which indicates that the tip resistance of the grouted shaft is mobilized before performing vertical load due to the preloading effect of soil beneath shaft tip arising from tip grouting. Consequently, the asynchrony of the side resistance and tip resistance of pile are improved. Finally, two cases are selected to further study the influence of post grouting on the bearing characteristics of drilled shafts.



This work was support by the Major State Basic Research Development Program of China (973 program) (No. 2013CB036304), and the science and technology project on transportation construction in Yinchuan, China (K2014K063-01-05).


  1. Bruce, D.A.: Enhancing the performance of large diameter piles by grouting. Ground Engineering (1986)Google Scholar
  2. Dai, G., Gong, W., Xue, G., et al.: Effect examination for a base post-grouting overlength drilling pile. Rock and Soil Mechanics. 5, 35 (2006). (in Chinese)Google Scholar
  3. Dai, G., Gong, W., Zhao, X., et al.: Static testing of pile-base post-grouting piles of the Suramadu bridge (2011). doi: 10.1520/GTJ102926
  4. Dapp, S.D., Mullins, G.: Pressure grouting drilled shaft tips: Full-scale research investigation for silty and shelly sands. Geotechn. Spec. Publ. (2002). doi: 10.1061/40601(256)24 Google Scholar
  5. Dapp, S.D., Muchard, M., Brown, D.A.: Experiences with base grouted drilled shafts in the Southeastern United States. In: Proceedings of 10th International Conference on Piling and Deep Foundations (2006)Google Scholar
  6. Gong, W., Dai, G., Jiang, Y., et al.: Theory and practice of self-balanced loading test for pile bearing capacity. Journal of building structures. 1, 14 (2002). (in chinese)Google Scholar
  7. Hirayama, H.: Load-settlement analysis for bored piles using hyperbolic transfer functions. J. Geotech. Eng. Div. (1990). doi: 10.3208/sandf1972.30.55 Google Scholar
  8. Huang, S., Gong, W.: Study on bearing behavior of super long-large diameter piles after grouting. Chin. J. Geotech. Eng. 28(1), 113–117 (2006). (in Chinese)Google Scholar
  9. Mullins, G., Dapp, S.D., Lai, P.: Pressure-grouting drilled shaft tips in sand. Geotech. Spec. Publ. (2000). doi: 10.1061/40511(288)1 Google Scholar
  10. Mullins, G., Dapp, S., Fredrerick, E., et al.: Pressure grouting drilled shaft tips-Phase I final report. Final Report Submitted Florida Department of Transportation (2001)Google Scholar
  11. Mullins, G., Winters, D., Steven, D.: predicting end bearing capacity of post-grouted drilled shaft in cohesioniess soils. J. Geotech. Geoenviron. Eng. (2006). doi: 10.1061/1090-0241(2006)132:4(478) Google Scholar
  12. Ruiz, M.E., Pando, M.A.: Load transfer mechanisms of tip post-grouted drilled shafts in sand. Contemp. Topics Deep Found. (2009). doi: 10.1061/41021(335)3 Google Scholar
  13. Safaqah, O., Bittner, R., Zhang, X.: Post-grouting of drilled shaft tips on the Sutong Bridge: a case history. Contemp. Issues Deep Found. (2007). doi: 10.1061/40902(221)33 Google Scholar
  14. Sliwinski, Z.J., Flemming, W.G.K.: The integrity and performance of bored piles. In: Proceedings of the International Conference on Advances in Piling and Ground Treatment for Foundations (1984). doi: 10.1680/padt.01855.0022
  15. Sliwinski, Z.J., Philpot, T.A.: Conditions for effective end-bearing of bored cast in-situ piles. In: Proceedings ICE Conference on Recent Developments in the Design and Construction of Pile. doi: 10.1680/raditdacop.00827.0009
  16. Wan, Z., Dai, G., Gong, W., et al.: Research of load settlement relationship for post grouted based on load transfer function method on Yueqing Bay Bridge. Bridging the East and West, ASCE (2016a). doi: 10.1061/9780784479810.017
  17. Wan, Z., Dai, G., Gong, W., et al.: Experimental study on bearing behaviors of tip grouting on pile tip resistance. In: Proceedings of the 14th China National Conference of Ground Improvement (2016b) (in Chinese)Google Scholar
  18. Zhong-miao, Z.: Post-grouting technology of bored piles and its engineering application. China Architecture & Building Press, Beijing (2009). (in Chinese)Google Scholar

Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  1. 1.Key of Laboratory for RC and PRC Structure of Education Ministry, School of Civil EngineeringSoutheast UniversityNanjingChina

Personalised recommendations