1. bookVolume 16 (2021): Issue 2 (December 2021)
Journal Details
License
Format
Journal
eISSN
1338-7278
First Published
29 Mar 2013
Publication timeframe
2 times per year
Languages
English
access type Open Access

Experimental and numerical study of the behavior of a stone column subject to the loading effect

Published Online: 30 Dec 2021
Volume & Issue: Volume 16 (2021) - Issue 2 (December 2021)
Page range: 105 - 114
Journal Details
License
Format
Journal
eISSN
1338-7278
First Published
29 Mar 2013
Publication timeframe
2 times per year
Languages
English
Abstract

The realization of engineering structures in compressible sites, requires in-depth geotechnical reconnaissance, as well as a study of the mechanical behavior of the soil, in order to adapt suitable soil improvement solutions. This is the case with the Annaba viaduct in Algeria, where it was found during the site survey that the soil is poor and very compressible. The foundations in these soils eventually pose the problem of their low bearing capacity and significant settlement. This, therefore, leads to the choice of reinforcement techniques. Among the many methods of improving soils, we have selected the stone column technique. The object of our article is to study the behavior of these columns, in terms of settlement and, through the loading tests on real site, we have found out that the intermediate columns are stiffer and more confined than the bank columns and the percentage reduction in settlements of these two types is important. Then, this experimental study is validated by the Plaxis 2D software, where the configurations are studied to find the best model that approximates the real behavior of the reinforced soil.

Keywords

[1] Greenwood, D.A., (1970). Mechanical improvement of soils below ground surface. In: Proceedings of Ground Improvement Conference. Institute of Civil Engineering, pp. 9-29. Search in Google Scholar

[2] Slocombe B.C., Moseley M.P. (1991). The testing and instrumentation of stone columns, Deep Foundation Improvements: Design, construction and testing ASTM STP 1089, p. 85-100. Search in Google Scholar

[3] Balaam N P., Booker J R (1985). Effect of stone column yield on settlement of rigid foundations in stabilized clay. International journal for numerical and analytical methods in geomechanics.vol. 9, pp.331-351. Search in Google Scholar

[4] Watts, K.S., Johnson, D., Wood, L.A., Saadi, A. (2000). An instrumented trial of vibro ground treatment supporting strip foundations in a variable fill, Géotechnique, 50, (6), p. 699-708. Search in Google Scholar

[5] Dhouib A, Soyez B, Wehr J, Priebe H.J. (2004). Méthode de Priebe : origine, développement et applications. Actes du Symposium International sur l’amélioration des sols en place (ASEP-GI 2004). Edition presses de l’ENPC-LCPC. Paris, Vol. 1 PP 131-146 Search in Google Scholar

[6] Dhouib, A. et Blondeau, F., (2005). Colonnes ballastées. Edition Presses des Ponts et Chaussées. Paris. Search in Google Scholar

[7] Vincent Six, (2006). Analyse du comportement des colonnes ballastées : influence des conditions initiales, laboratoire de mécanique de Lille (UMR 8107) Search in Google Scholar

[8] Corneille S. (2007). Amélioration des sols par inclusions semi-rigides, Thèse de Doctorat INPL. Search in Google Scholar

[9] Deb, K., (2008). Modeling of granular bed-stone column- improved soft soil. Int. J. Numer. Anal. Methods Geomech. 32(10),1267–1288.10.1002/nag.672 Search in Google Scholar

[10] Almeida, M.S.S., Hosseinpour, I., Riccio, M., (2013). Performance of a geosynthetic encased column (GEC) in soft ground: numerical and analytical studies. Geosynth. Int. 20 (4), 252-262.10.1680/gein.13.00015 Search in Google Scholar

[11] Castro, J, (2014). Numerical modelling of stone columns beneath a rigid footing. Group of Geotechnical Engineering, Department of Ground Engineering and Materials Science, University of Cantabria, Avda. de Los Castros, s/n, 39005 Santander, Spain.10.1016/j.compgeo.2014.03.016 Search in Google Scholar

[12] Ng and Tan (2014). Design and analyses of floating stone columns, Soils and Foundations2014; 54(3):478–48710.1016/j.sandf.2014.04.013 Search in Google Scholar

[13] Geng, L, Tang, L, Cong, S.Y, Ling, X.Z, Lu, J, (2016). Three-dimensional analysis of geosynthetic-encased granular columns for liquefaction mitigation. Geosynth. Int. 24(1), 45–59.10.1680/jgein.16.00014 Search in Google Scholar

[14] Debnath, P., Dey, A.K., (2017). Bearing capacity of geogrid reinforced sand over encased stone columns in soft clay. Geotext. Geomembr. 45, 653–664.10.1016/j.geotexmem.2017.08.006 Search in Google Scholar

[15] Ministry of Equipment, lodgment and Transport (1993), « Règles techniques de conception et de calcul des fondations des ouvrages de génie civil – Cahier des clauses techniques générales applicables aux marchés publics de travaux », Fascicule 62 – Titre V. Search in Google Scholar

[16] Priebe, H. J. 1976. Evaluation of the settlement reduction of a foundation improved by Vibro-Replacement. Bautechnik, 2, 160-162. Search in Google Scholar

Recommended articles from Trend MD

Plan your remote conference with Sciendo