Experimental study of trapdoor problem in 3 dimensions with X-ray CT – transition from plane strain to 3D behavior

Bastien Chevalier (1, 2) , Jun Otani (3, 4) , T Mukunoki (4, 3)

1 UBP - Université Blaise Pascal - Clermont-Ferrand 2
2 IP - Institut Pascal
3 Kumamoto University
4 X-Earth Center

This paper present an experimental study of the trapdoor problem in 3-dimensions using X-ray computed tomography. Trapdoor tests were performed on layers of glass beads of different sizes. Different trapdoor shapes varying from square to rectangular shape were also tested. The trapdoor tests were analyzed in terms of load transfer (force) and in terms of propagation of the disturbance created in the layer by the trapdoor movement. The results revealed the existence of a transition between a 2-dimesional behavior and a 3-dimensional behavior in the trapdoor problem, as the aspect ratio of the trapdoor increased.

Domaines: Génie civil

Bastien Chevalier, Jun Otani, T Mukunoki. Experimental study of trapdoor problem in 3 dimensions with X-ray CT – transition from plane strain to 3D behavior. 14th IACMAG International Conference, Sep 2014, Kyoto, Japan. ⟨10.1201/b17435-56⟩. ⟨hal-01126774⟩