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Contributions aux méthodes de calcul des groupes et des réseaux de micropieux

Roger Estephan
Abstract : The research realized within this thesis concern the study of the behaviour of micropiles groups and networks. The interactions between the micropiles within a group, as well as the effect of micropile inclination within a network, are treated through the three parts of this thesis.
The first part concerns the definition, the classification and the application of micropiles. The usual design methods of micropiles (single, groups or networks) are presented herein.
The second part presents a synthesis of various experimental tests carried out, within the framework of the French national research project FOREVER, on groups and/or networks of micropiles. These tests are carried out in full-scale or in reduced model (centrifuge, calibration chamber).
The third part presents two different numerical approaches for the study of micropiles behavior. The Load transfer method is used through the micropile groups design program (GOUPEG) which is developed to take into consideration the effect of micropiles inclination. The case of an elementary network of 4 micropiles and of an equivalent group is studied. A parametric study on the effect of micropile inclination angle within an elementary network is presented. Finally, the finite element method is used (CESAR-LCPC) for the study of the behaviour of a double A shaped elementary network of 4 micropiles. This last approach provides interesting results on the behaviour of the soil under the battered micropiles.
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Submitted on : Monday, April 5, 2004 - 5:57:15 PM
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Roger Estephan. Contributions aux méthodes de calcul des groupes et des réseaux de micropieux. Sciences de l'ingénieur [physics]. Ecole des Ponts ParisTech, 2003. Français. ⟨tel-00005723⟩

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