Skip to main content
SpringerLink
Log in

Micropile group behaviour subjected to lateral loading

  • Technical Paper
  • Published:
Innovative Infrastructure Solutions Aims and scope Submit manuscript

Abstract

Micropiles are suitable for underpinning and seismic retrofitting of structures. It is specially suitable for low head room area and can easily access congested areas where it is difficult to construct conventional piles. Its two basic functions are structural support and soil reinforcement. Literature review showed contradictory group effects on micropile behaviour subjected to vertical and lateral loading. This study is to investigate the response of micropile groups subjected to lateral load installed in loose sand (relative density 30%), in medium dense sand (relative density 50%) and in dense sand (relative density 80%). The group behaviour is found to be a function of the state of the sand, spacing of the micropile groups and length-to-diameter (L/D) ratio. Ultimate lateral resistances of micropile groups are maximum at 2D spacing in loose sand and in medium dense sand. In dense sand, maximum lateral resistance is observed in 6D spacing. Overall, it was observed that groups with higher L/D ratio had positive group effects. Modes of failure of the micropile groups are found to be a function of the length-to-diameter ratio and relative density of the sand.

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

Similar content being viewed by others

References

  1. Broms B (1964) Lateral resistance of piles in cohesionless soil. J Soil Mech Found Div ASCE 90(3):123–156

    Google Scholar 

  2. Bruce DA (1995) Small-diameter cast-in-place elements for load-bearing and in situ earth reinforcement. In: Xanthakos PP, Abramson LW, Bruce DA (eds) Ground control and improvement, vol 6. Wiley, New York, pp 406–492

    Google Scholar 

  3. Benslimane A, Juran I, Hanna S, Drabkin S (1998) Seismic behaviour of micropile system. In: Proceedings of sessions of geo-congress 98, October 18–21, 1998, Boston, MA

  4. Castelli F, Grasso1 S, Maugeri M (2014) Non linear behaviour of small diameter bored piles under horizontal loads. In: 12th European conference on earthquake engineering. Paper Reference 501, Published by Elsevier Science Ltd

  5. FOREVER (2002) Synthesis of the results of the national project on micropiles. Research report, IREX

  6. Kershaw K, Luna R (2018) Scale model investigation of the effect of vertical load on the lateral response of micropiles in sand. DFI J 12(1):3–15

    Google Scholar 

  7. Lizzi F (1983) The “Reticolo di Pali Radice” (Reticulated Root pile) for the improvement of soil resistance physical aspects and design approaches. In: VIII ECSMFE, Helsinki, pp 521–524

  8. O’Neil MW, Pierry RF (1989) Behaviour of minigrouted piles used in foundation underpinning in Beaumont Clay, Houston, Texas, USA. In: Proceeding of the international conference piling and deep foundation, London/15, 1 May, pp. 101–109

  9. Plumelle C (1984) Improvement of the bearing capacity of soil by insertion of Group and Reticulated micropiles. In: Proceedings, international conference on in situ soil and rock reinforcement, Paris, France, pp 83–89

  10. Schlosser F, Juran I (1979) Design parameters of artificially improved soils. In: ECSMFE, Brighton, vol 5, pp 197–225

  11. Soliman N, Munkofh G (1988) Foundation on drilled and grouted minipiles—a case history. In: Proceeding 1st international geotechnical seminar on deep foundations on bored and auger piles, GHENT/7–9 June, pp 363–369

  12. Sharma B (2011) A model study of micropiles subjected to lateral loading and oblique pull. Indian Geotech J 41(4):196–205

    Google Scholar 

  13. Sharma B, Buragohain P (2013) Behaviour of micropile groups under oblique pull out loads in sand. Indian Geotech J. https://doi.org/10.1007/s40098-013-0091-1

    Article  Google Scholar 

  14. Turan A, El Naggar MH, Hinchberger S (2008) Lateral behaviour of micro-pile groups under static and dynamic loads. In: Proceedings of the 4th Canadian conference on geohazards: from causes to management, p 594

Download references

Author information

Authors and Affiliations

  1. Civil Engineering Department, Assam Engineering College, Assam, India

    Zakir Hussain, Binu Sharma & Takiur Rahman

Authors
  1. Zakir Hussain
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Binu Sharma
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Takiur Rahman
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Binu Sharma.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Hussain, Z., Sharma, B. & Rahman, T. Micropile group behaviour subjected to lateral loading. Innov. Infrastruct. Solut. 4, 22 (2019). https://doi.org/10.1007/s41062-019-0206-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s41062-019-0206-3

Keywords

Search

Navigation