Skip to main content
SpringerLink
Log in

Shear Load Transfer Characteristics of Drilled Shafts Socketed in Rocks

  • Original Paper
  • Published:
Rock Mechanics and Rock Engineering Aims and scope Submit manuscript

Abstract

This paper presents a shear load transfer function and an analytical method for estimating the load transfer characteristics of rock-socketed drilled shafts subjected to axial loads. A shear load transfer (f–w) function of rock-socketed drilled shafts is proposed based on the constant normal stiffness (CNS) direct shear tests. It is presented in terms of the borehole roughness and the geological strength index (GSI) so that the structural discontinuities and the surface conditions of the rock mass can be considered. An analytical method that takes into account the coupled soil resistance effects is proposed using a modified Mindlin’s point load solution. Through comparisons with load test results, the proposed methodology is in good agreement with the general trend observed in in situ measurements and represents an improvement in the prediction of the shear behavior of rock-socketed drilled shafts.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14
Fig. 15
Fig. 16
Fig. 17
Fig. 18

Similar content being viewed by others

References

  • Baguelin F (1982) Rules for the structural design of foundations based on the selfboring pressuremeter test. In: Proceedings of the Symposium on the Pressuremeter and its Marine Application, IFP, Paris, France, April 1982, pp 347–362

  • Boresi AP (1965) Elasticity in engineering mechanics. Prentice-Hall, Englewood Cliffs

    Google Scholar 

  • Carter JP, Kulhawy FH (1988) Analysis and design of drilled shaft foundations socketed into rock. Final report, EL 5918/Project 1493–4/Electric Power Research Institute. Cornell University, Ithaca

    Google Scholar 

  • Castelli F, Maugeri M, Motta E (1992) Analisi non lineare del cedimento di un Palo Singolo. Rivista Italiana di Geotechnica 26(2):115–135

    Google Scholar 

  • Hoek E, Brown ET (1997) Practical estimates of rock mass strength. Int J Rock Mech Min Sci Geomech Abstr 34(8):1165–1186

    Article  Google Scholar 

  • Indraratna B, Haque A, Aziz N (1998) Laboratory modelling of shear behaviour of soft joints under constant normal stiffness conditions. Geotech Geol Eng 16:17–44

    Article  Google Scholar 

  • Johnston IW (1994) Movement of foundations on rock. Geotechnical special publication no. 40. Vertical and horizontal deformations of foundations and embankments ASCE, vol 2, pp 1703–1717

  • Kim SI, Jeong SS, Cho SH, Park IJ (1999) Shear load transfer characteristics of drilled shafts in weathered rocks. J Geotech Geoenviron Eng ASCE 125(11):999–1010

    Article  Google Scholar 

  • Kwon OS (2004) Effect of rock mass weathering on resistant behavior of drilled shaft socketed into weathered rock. PhD dissertation, Seoul University

  • Lee MH, Cho CH, Yoo HK, Kwon HK (2003) A study on the surface roughness of drilled shaft into rock in Korea. In: Proceedings of the Korean Geotechnical Society Conference, KGS, Seoul, pp 431–438

  • Nam MS (2004) Improved design for drilled shafts in rock. PhD dissertation, University of Houston

  • O’Neill MW, Hassan KM (1994) Drilled shaft: effects of construction on performance and design criteria. In: Proceedings of the International Conference on the Design and Construction of Deep Foundations, vol 1, Federal Highways Administration, Washington DC, pp 137–187

  • Ooi LH (1989) The interface behaviour of socketed piles. PhD dissertation, University of Sydney

  • Poulos HG, Davis EH (1968) The settlement behaviour of single axially loaded incompressible piles and piers. Geotechnique 18:351–371

    Article  Google Scholar 

  • Seidel JP, Collingwood B (2001) A new socket roughness factor for prediction of rock socket shaft resistance. Can Geotech J 38(1):138–153

    Article  Google Scholar 

  • Seidel JP, Haberfield CM (1995) Towards an understanding of joint roughness. Rock Mech Rock Eng J 28(2):69–92

    Article  Google Scholar 

  • Seol HI (2007) Load transfer analysis of rock-socketed drilled shafts by considering coupled soil resistance. PhD dissertation, Yonsei University

  • Seol HI, Jeong SS (2007) Shaft resistance characteristics of rock-socketed drilled shafts based on pile load tests. J Korean Geotech Soc 23(9):51–63

    Google Scholar 

  • Taylor WH (1965) Concrete technology and practice, 1st edn. Angus and Robertson, Sydney

    Google Scholar 

  • Williams AF, Johnston IW, Donald IB (1980) The design of socketed piles in weak rock. In: Proceedings of the International Conference on Structural Foundations on Rock, Sydney, Australia, May 1980. Balkema, pp 327–347

  • Zhan C, Yin J (2000) Field static load tests on drilled shaft founded on or socketed into rock. Can Geotech J 37:1283–1294

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Civil Engineering, Yonsei University, Seoul, 120-749, Korea

    Sangseom Jeong & Hoonil Seol

  2. Department of Railway and Mass Transit, Daewoo Engineering, Seongnam, 463-825, Korea

    Sangyong Ahn

Authors
  1. Sangseom Jeong
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Sangyong Ahn
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Hoonil Seol
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Sangseom Jeong.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Jeong, S., Ahn, S. & Seol, H. Shear Load Transfer Characteristics of Drilled Shafts Socketed in Rocks. Rock Mech Rock Eng 43, 41–54 (2010). https://doi.org/10.1007/s00603-009-0026-4

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00603-009-0026-4

Keywords

Search

Navigation