Open Access Open Access  Restricted Access Subscription or Fee Access

Analytical and Experimental Study of Pile Capacity in Unsaturated Sandy Clay


(*) Corresponding author


Authors' affiliations


DOI: https://doi.org/10.15866/irece.v12i1.17041

Abstract


The design of pile foundation in technical practice is based on saturated soil mechanic or empirical procedure that ignores the influence of matric suction. Understanding the pile behavior and predicting the capacity of pile in unsaturated soil are important topics in foundation design. An experimental model test has been conducted on a single concrete pile model with a diameter of 16 mm and L/d ratios of 6, 10, 15 and 20. Model pile has been driven into sandy clay in the test box and is subjected to compression and uplift loading. The tensiometer instrument has been used to measure matric suction and the SoilVision has been used to get an estimate of the entire Soil Water Characteristic Curve (SWCC). The shear strength of sandy clay has been examined using a series of unconsolidated undrained triaxial tests to identify the relationship between cohesion, internal friction angle, and matric suction. The result has shown that end bearing pile capacity, skin friction capacity and total capacity of single piles are significantly influenced by the contribution of matric suction. Based on the experimental result, end bearing capacity and skin friction capacity of pile in saturated soil equation have been modified to calculate total capacity of pile in unsaturated soils by considering the influence of matric suction.
Copyright © 2021 Praise Worthy Prize - All rights reserved.

Keywords


Pile Foundation; Matric Suction; Modified Analytical Formula; SWCC; Tensiometer

Full Text:

PDF


References


A. A. Jebur, W. Atherton, R.M. Alkhadar, and E. Loffill, Piles in Sandy Soil : A Numerical Study and Experimental Validation, Creative Construction Conference, Procedia Engineering, Vol. 196, pp. 60 – 67, Primosten, Croatia, 19-22 June 2017.
https://doi.org/10.1016/j.proeng.2017.07.173

Ait Ouharouch, F., Bahrar, B., Gueraoui, K., Study of the Influence of the Soil and Pile Characteristics on the Behavior of a Pile Subjected to a Lateral Load, (2019) International Review of Civil Engineering (IRECE), 10 (6), pp. 320-325.
https://doi.org/10.15866/irece.v10i6.17032

M.F. Randolph, Science and Empiricism in Pile Foundation Design, Géotechnique, Vol.53(No. 10):847–87, October 2003.
https://doi.org/10.1680/geot.2003.53.10.847

Waruwu, A., Hardiyatmo, H., Rifa’i, A., The Performance of the Nailed Slab System-Supported Embankment on Peat Soil, (2019) International Review of Civil Engineering (IRECE), 10 (5), pp. 243-248.
https://doi.org/10.15866/irece.v10i5.15757

Fattah, M., Salim, N., Haleel, R., Liquefaction Potential of Sandy Soil from Small Laboratory Machine Foundation Model, (2018) International Review of Civil Engineering (IRECE), 9 (1), pp. 11-19.
https://doi.org/10.15866/irece.v9i1.13737

C. Gallage and T. Uchimura, Direct Shear Testing on Unsaturated Silty Soils to Investigate the Effects of Drying and Wetting on Shear Strength Parameters at Low Suction, J. Geotech. Geoenviron. Eng., ASCE, Vol. 142(No. 3):1-9, September 2015.
https://doi.org/10.1061/(asce)gt.1943-5606.0001416

A.M. Elsharief and O.A. Abdulaziz, Effects of Matric Suction on the Shear Strength of Highly Plastic Compacted, The 16th African Regional Conference on Soil Mechanics and Geotechnical Engineering, pp.97-103, Tunis, April 2015.

H. Pujiastuti, A. Rifa’i, A.D. Adi and T.F. Fathani, The Effect of Matric Suction on The Shear Strength of Unsaturated Sandy Clay, International Journal of Geomate, Vol.14( Issue 42):112-119, Januari 2018a.
https://doi.org/10.21660/2018.42.72825

H. Pujiastuti, A. Rifa’i, A.D. Adi and T.F. Fathani, Effect of Matric Suction Change on Pile Foundation Capacity in Unsaturated Soils, International Conference on Geotechnics, Vol. 1, pp. 94-100, Yogyakarta, Indonesia, 24-26 July 2018b.

O. Bandehzadeh, M.M. Sadeghi, M.A. Rowshanzami and A.H. Nia, Definition of the Load Carrying Capacity of Single Piles in Unsaturated Soils Using Barcelona Basic Constitutive Model, Electronic Journal of Geotechnical Engineering (EJGE), Vol. 22 (Bund. 14):5645-5660, 2017.

M.Y. Fattah, N.M. Salim and I.M. Mohsin, Behavior of Single Pile in Unsaturated Clayey Soils, Eng. & Tech. Journal, Vol. 32 Part (A), No. 3:763-787, March 2014.

S.H. Chung and S.R. Yang, Numerical Analysis of Small Scale Model Pile in Unsaturated Clayey Soil, Int J Civ Eng Vol 15:877–886, September 2016.
https://doi.org/10.1007/s40999-016-0065-7

Z. Han, S.K. Vanapalli and Z.N. Kutlu, Modeling Behavior of Friction Pile in Compacted Glacial Till, International Journal of Geomechanics, pp.1-12, 3 March 2016.
https://doi.org/10.1061/(asce)gm.1943-5622.0000659

R.R. Al-Omari, M.Y. Fattah, and A.M. Kallawi, Laboratory Study on Load Carrying Capacity of Pile Group in Unsaturated Clay, Arabian Journal for Science and Engineering, Vol 44(No. 5):4613-4627, July 2018.
https://doi.org/10.1007/s13369-018-3483-9

M.R. Mahmood, S.FA. Al-Wakel, and A.A. Hani, Experimental and Numerical Analysis of Piled Raft Foundation Embedded with in Partially Saturated Soil, Engineering and Technology Journal, Vol 35 Part A (No. 2):97-105, January 2017.

D. Carvalho and A.P.J. Rocha, Uplift Behavior of Bored Piles in Tropical Unsaturated Sandy Soil, Proceedings of The 18th International Conference on Soil Mechanics and Geotechnical Engineering, pp. 2707-2710, Paris, Perancis, 2013.

S.K. Vanapalli and Z.N. Taylan, Design of Single Piles Using the Mechanics of Unsaturated Soils, International Journal of Geomate, Vol.2 (No.1):197–204, March 2012.

M.J. Tomlinson, Pile Design and Construction Practice, (Taylor & Francis Group E-library, 2004).

K. E. Gaaver, Uplift Capacity of Single Piles and Pile Groups Embedded in Cohesionless Soil, Alexandria Engineering Journal, Vol. 52:365-372, 6 January 2013.
https://doi.org/10.1016/j.aej.2013.01.003

H. Pujiastuti, Pile Foundation Behavior Due To Load On Partially Saturated Soil (Unsaturated Soil), Dissertation, Departemen Teknik Sipil dan Lingkungan, Fakultas Teknik, Universitas Gadjah Mada (UGM), Yogyakarta, Indonesia, 2020.
https://doi.org/10.21776/ub.pengairan.2019.010.02.09

R. Al-Omari, M. Fattah, and S. Fadhil, Adhesion Factor of Piles Embedded in Unsaturated Swelling Soil, Proceedings of the 19th International Conference on Soil Mechanics and Geotechnical Engineering, pp. 2703-2706, Seoul, September 2017.

M.J. Tomlinson and J. Woodward, Pile Design and Construction Practice, (CRS Press, Taylor and Francis Group, 2015).

Abbas, J., Experimental Investigation of Pile Foundation Subjected to Lateral Static and Cyclic Loadings, (2020) International Review of Civil Engineering (IRECE), 11 (3), pp. 127-134.
https://doi.org/10.15866/irece.v11i3.17102

Waruwu, A., Hardiyatmo, H., Rifa’i, A., The Performance of the Nailed Slab System-Supported Embankment on Peat Soil, (2019) International Review of Civil Engineering (IRECE), 10 (5), pp. 243-248.
https://doi.org/10.15866/irece.v10i5.15757


Refbacks

  • There are currently no refbacks.


Please send any question about this web site to info@praiseworthyprize.com
Copyright © 2005-2024 Praise Worthy Prize