Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Projet national FOREVER
Micropiles group and network concept, developed by F. Lizzi, considers soil and micropiles in a complex interaction. Experimental tests, with vertically or laterally loads, were performed on groups and elementary networks of micropiles, as part of the French national research program FOREVER. These tests were carried out in calibration chambers, in a centrifuge and in full scale. The main object of these tests was to study the influence of different arrangements on the efficiency coefficient. The different tested parameters were the micropile spacing, their number, their installation method, and their inclination. The analysis of the whole experimental program results leads to the following conclusions. For a positive group or network efficiency a large number of micropiles is required. The optimal spacing is about 2 or 3 times the micropile diameter. The network arrangement is, a priori, less favourable than the group one for vertical loading; it is the contrary for horizontal loading. Load transfer method (p-y and t-z curves) is then used in a three dimensional analysis of the experimental results of the elementary 4 micropiles (double easels) network. The loading curves are well reproduced, given some adjustments and this study concluded on the importance of the axial friction on the behaviour of the networks.
Projet national FOREVER
Micropiles group and network concept, developed by F. Lizzi, considers soil and micropiles in a complex interaction. Experimental tests, with vertically or laterally loads, were performed on groups and elementary networks of micropiles, as part of the French national research program FOREVER. These tests were carried out in calibration chambers, in a centrifuge and in full scale. The main object of these tests was to study the influence of different arrangements on the efficiency coefficient. The different tested parameters were the micropile spacing, their number, their installation method, and their inclination. The analysis of the whole experimental program results leads to the following conclusions. For a positive group or network efficiency a large number of micropiles is required. The optimal spacing is about 2 or 3 times the micropile diameter. The network arrangement is, a priori, less favourable than the group one for vertical loading; it is the contrary for horizontal loading. Load transfer method (p-y and t-z curves) is then used in a three dimensional analysis of the experimental results of the elementary 4 micropiles (double easels) network. The loading curves are well reproduced, given some adjustments and this study concluded on the importance of the axial friction on the behaviour of the networks.
Projet national FOREVER
Plumelle, Claude (Autor:in) / Gangneux, Patrick (Autor:in) / Frank, Roger (Autor:in) / Canou, Jean (Autor:in) / Estephan, Roger (Autor:in) / Foray, Pierre (Autor:in) / Garnier, Jacques (Autor:in)
Revue Française de Génie Civil ; 6 ; 17-38
01.01.2002
22 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Micropiles , groups , networks , reduced scale , full scale , Micropieux , groupes , réseaux , modèles réduits , vraie grandeur.
| Taylor & Francis Verlag | 2003
Forever cognizant, forever thankful
| Online Contents | 2006
| British Library Online Contents | 2003
| Taylor & Francis Verlag | 2002
| Taylor & Francis Verlag | 2002