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Modélisation en éléments finis du phasage des travaux de creusement et de soutènement d'un tunnel urbain
Very limited displacements of the existing buildings are adressed during the construction of tunnels at shallow depth using a tunnelling machine in urban alluvium environment. The authors first present the section of the tunnel (Lyon Vaise subway) investigated and analyse the loading history corresponding to the staged construction. Then they propose a 2D finite element modelisation of the processes of excavation and supporting, inspired by the principles of the inverse calculation, for the first tube, and for both tubes. Finally they evaluate the suitability of their approach by comparison to the results of the classical method of calculation (deconfining) and to the results of auscultation of this section of the tunnel.
Modélisation en éléments finis du phasage des travaux de creusement et de soutènement d'un tunnel urbain
Very limited displacements of the existing buildings are adressed during the construction of tunnels at shallow depth using a tunnelling machine in urban alluvium environment. The authors first present the section of the tunnel (Lyon Vaise subway) investigated and analyse the loading history corresponding to the staged construction. Then they propose a 2D finite element modelisation of the processes of excavation and supporting, inspired by the principles of the inverse calculation, for the first tube, and for both tubes. Finally they evaluate the suitability of their approach by comparison to the results of the classical method of calculation (deconfining) and to the results of auscultation of this section of the tunnel.
Modélisation en éléments finis du phasage des travaux de creusement et de soutènement d'un tunnel urbain
Boulon, Marc (author) / Flavigny, Etienne (author) / Armand, Gilles (author) / Courdavault, Cyrille (author)
Revue Française de Génie Civil ; 1 ; 161-188
1997-01-01
28 pages
Article (Journal)
Electronic Resource
Unknown
modeling , finite element , bidimensional , tunnel , excavation , support , soft soil , grouting , staged construction , deconfining , computation-measurements comparison , modélisation , éléments finis , bidimensionnel , creusement , soutènement , sol meuble , injection , phasage des opérations , déconfinement , comparaison calcul-mesures
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