Resistance Capacity of Inclined Anchored Pile Group to Lateral Load in Sandy Soil

https://doi.org/10.24237/djes.2022.15107

Authors

  • Ali H. Ahmed Department of Civil Engineering, University of Diyala, 32001 Diyala, Iraq
  • Hassan Obaid Abbas Department of Civil Engineering, University of Diyala, 32001 Diyala, Iraq

Keywords:

Inclined anchored pile,, Anchored piles,, Inclined piles,, Resistance capacity,, Inclination angles,, Number of helix

Abstract

This study was conducted to investigate the lateral behavior of inclined anchored pile group by using (3 pile) model embedded in sandy soil by relative density 65% under lateral static load. The distances used between the piles are 60 mm which represents (3) Dh (helix diameter), noting that the diameter of the pile is 10 mm. The types of piles used are three types, and they are a pile with a single helix, a pile with a double helix and a pile without a helix (ordinary pile), noting that the depth embedded in the soil of piles (L/d) 330 mm. The angles of inclination used in this study are (5°, 10°, 15°). The results showed that increasing the angle of inclination of the pile leads to a higher amplitude of the lateral resistance of the pile group, the side resistance of pile with a single helix increase to about (9% and 18%) upon inclination angle increase from 5° to (10°,15°) respectively. While piles with double and single helix in the groups in same angle of inclination which is (10°) increases the lateral resistance from ordinary pile (pile without helix) about 24% and 19% respectively

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References

M. A. Sakr, A. K. Nazir, W. R. Azzam, A. F. Sallam, ''Behavior of grouted single screw piles under inclined tensile loads in sand'', EJGE. Vol. 21572-591, 2016.

B. W. Byrne, G. T. Houlsby, ''Helical piles: an innovative foundation design option for offshore wind turbines'', Phil. Trans. R. Soc., A 373:20140081, 2015. DOI: https://doi.org/10.1098/rsta.2014.0081

M.T. Kristen, C.S. David, ''Predicting the Axial Capacity of Screw Piles Installed in Canadian Soils'', Ottawa Geo, 2007.

B. Livneh, M.H.M. Naggar, ''Axial testing and numerical modeling of square shaft helical piles under compressive and tensile loading'', Can. Geotech.J, 45 (8) 1142–1155, 2008. DOI: https://doi.org/10.1139/T08-044

R. Schmidt, M. Nasr, ''Screw piles: uses and considerations'', Struct. Mag. 29–31, 2004.

G.P. T. Tschebotariofl, ''The Resistance to Lateral Loading of Single Piles and of Pile Groups, Symposium on Lateral Load Tests on Piles''. Philadelphia, Pennsylvania: American Society of Testing Materials, No.154, pp. 38-48, 1953.

AASHTO, The American Association of state Highway and Transportation Officials. LRFD Bridge design specifications. Section C 10.7.1.4 – Batter piles, 2010.

Pathak B., ''Analysis of Static Lateral Load Test of Battered Pile Group at I-10 Twin Span Bridge'', M.Sc. Thesis, Graduate School of the Louisiana state university and agriculture and mechanical College, 2011.

Basack S, Bhattacharya A K. “Influence of Lateral Cyclic Load on Pile Foundation with Emphasis on Disturbance at Ground Surface” Electronic Journal of Geotechnical Engineering, (14): 1-11, 2009.

Azhar S. Ibrahim, Hassan O. Abbas. “Influence of Spacing and Cross-Sectional Shaft of Screw Piles Group on Lateral Capacity “Diyala Journal of Engineering Sciences, Vol (14) No 1, 108-114, 2021. DOI: https://doi.org/10.24237/djes.2021.14110

Azhar S. Ibrahim, Hassan O. Abbas and Omar K. Ali, ''Experimental Study on Configuration and Spacing of Screw Pile Group Effect Subjected to Lateral Cyclic Loading'', E3S Web of Conferences 318,01004, 2021. DOI: https://doi.org/10.1051/e3sconf/202131801004

Bien Dinh, John Liu, John Dunn, Justin Zhang, Peter Huang, ''Long-term Lateral Resistance of Helical Piles in Cohesive Soils'', Almita Piling Inc., Ponoka, Alberta, Canada, Geo Regina, 2014.

O. K. Ali, and H.O. Abbas ''Performance Assessment of Screw Piles Embedded in Soft Clay'', Civil Engineering Journal, 5(8):1788-98, 2019. DOI: https://doi.org/10.28991/cej-2019-03091371

Ghazavi, M., Ravanshenas, P., & Lavasan, A. A. ''Analytical and numerical solution for Interaction between batter pile group'', KSCE Journal of Civil Engineering, 18(7), 2051-2063, 2014. DOI: https://doi.org/10.1007/s12205-014-0082-5

Jamill AS, Abbas HO. ''Effect of Screw Piles Spacing on Group Compressive Capacity in Soft Clay'', IOP Conference Series: Materials Science and Engineering, 1076(1):012098, 2021. DOI: https://doi.org/10.1088/1757-899X/1076/1/012098

Li, Z., Escoffier, S., & Kotronis, P. ''Centrifuge modeling of batter pile foundations under earthquake excitation'', Soil Dynamics and Earthquake Engineering, 88, 176-190, 2016. DOI: https://doi.org/10.1016/j.soildyn.2016.05.013

Kyung, D., Kim, D., Kim, G., and Lee, J., ''Vertical load-carrying behavior and design models for micro piles considering foundation configuration conditions'', Canadian Geotechnical Journal, 54(2) 234-247, 2016. DOI: https://doi.org/10.1139/cgj-2015-0472

H. G. Poulos, “Raked piles—virtues and drawbacks”, Journal of Geotechnical and Geo environmental Engineering, vol. 132, No. 6, pp. 795–803, 2006. DOI: https://doi.org/10.1061/(ASCE)1090-0241(2006)132:6(795)

W. M. Gong, T. Huang, and G. L. Dai, “Experimental study of key parameters of high piled foundation for offshore wind turbine,” Rock and Soil Mechanics, vol. 32, no. 2, pp. 115–121, in Chinese, 2011.

Sheikhbahaei, A., and Vafaeian. M., ''Dynamic study of batter pile groups under seismic excitations through finite element method'', World Academy of Science, Engineering and Technology, pp: 51-57, 2009.

Vu, A. T., Matsumoto, T., Yoshitani, R., & Nguyen, T. L.,'' Behavior of pile group and piled raft foundation models having batter piles'', Journal of Earth Engineering, 2(1), 27-40, 2017.

T.A. Al-Baghdadi, C. Davidson, M. J Brown, J. A Knappett, A.Brennan, C Augarde, W Coombs, L Wang, D Richards, and A Blake. “CPT-Based Design Procedure for Installation Torque Prediction for Screw Piles Installed in Sand.” Offshore Site Investigation Geotechnics 8th International Conference Proceedings (n.d.): 346–353. doi:10.3723/osig17.346, 2018. DOI: https://doi.org/10.3723/OSIG17.346

Mohajerani, Abbas, Dusan Bosnjak, Damon Bromwich. “Analysis and Design Methods of Screw Piles: A Review.” Soils and Foundations 56, no.1, 115-128, 2016. DOI: https://doi.org/10.1016/j.sandf.2016.01.009

B.B. Broms, ''Lateral resistance of piles in cohesive soils''. Journal of the Soil Mechanics and Foundations Division, b. 90(2): pp. 27-64, 1964. DOI: https://doi.org/10.1061/JSFEAQ.0000611

C.N. Weech, J.A. Howie, ''Helical piles in soft sensitive soils–a field study of disturbance effects on pile capacity'', In VGS Symposium on Soft Ground Engineering, 2012.

Published

2022-03-15

How to Cite

[1]
A. H. . Ahmed and H. Obaid Abbas, “Resistance Capacity of Inclined Anchored Pile Group to Lateral Load in Sandy Soil”, DJES, vol. 15, no. 1, pp. 72–80, Mar. 2022.