In Situ Lateral Load Tests on Instrumented Bored Piles in Loessial Soils

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The aim of the paper is to provide some aspects regarding the behaviour of laterally loaded piles in loessial soils, by presenting and analysing the results of several in situ tests on large diameter bored piles in this type of soil. The major feature of loess is that it exhibits a massive decline of its strength and stiffness parameters when it comes into contact with water, leading to the collapse of its structure even under self-weight and creating difficult conditions for foundations. The load tests were performed both in natural moisture content loess and also in saturated loess. The results obtained by means of instrumentation are back-analysed using current analytical methods and also by finite element method using a numerical model in the geotechnical computation software Plaxis 3D.

[1] Reese, C. and Van Impe, W. (2001). Single Piles and Pile Groups Under Lateral Loading. London: Taylor and Francis Group.

[2] Hetenyi, M. (1946). Beams on elastic foundations. Ann Arbor: University of Michigan Press.

[3] Terzaghi, K. (1955). Evaluations of coefficients of subgrade reaction. Geotechnique, 5 (4), pp. 297-326.

[4] Broms, B. (1964). Lateral resistance of piles in cohesive soils. Journal of Soil Mechanics and Foundation Engineering, ASCE, 90(2), pp. 27-63.

[5] Duncan, J.M. and Ooi, P.S.K. (1994). Lateral load analysis of single piles and drilled shafts. Journal of Geotechnical Engineering, ASCE, 120(5), pp. 1018-1033.

[6] Matlock, H. (1970). Correlations for design of laterally loaded piles. Journal of Soil Mechanics and Foundation Engineering, ASCE, 86(5), pp. 63-91.

[7] Monitorul Oficial ar României. (2010). Normativ privind proiectarea geotehnică a fundațiilor NP123:2010. Bucharest.

[8] Brinkgreve, R.B.J. et al. (2013). Plaxis 3D User Guide Manual. Delft University of Technology & Plaxis bv. Delft.

[9] Saidel Engineering SRL (2013). Static Load Test Reports for Zephyr Wind Farms. Bucharest.

[10] Nip, D.C.N. and Ng, C.W. (2005). Back analysis of laterally loaded bored piles, Proceedings of the Institution of Civil Engineers, Geotechnical Engineering Journal V. 158, pp. 63-73.

[11] Basu, D., Salgado, R. and Prezzi, M. (2008). Analysis of Laterally Loaded Piles in Multilayered Soil Deposits. Publication FHWA/IN/JTRP. Joint Transportation Research Program. doi:

[12] Qin, H. (2010). Response of pile foundations due to lateral force and soil movements. Thesis for Doctor of Philosophy, Griffith University, Queensland, Australia.

Mathematical Modelling in Civil Engineering

The Journal of Technical University of Civil Engineering of Bucharest

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