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Computers and Concrete Volume 6, Number 2, April 2009 , pages 109-132 DOI: https://doi.org/10.12989/cac.2009.6.2.109 |
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Finite element impact analysis for the design of structurally dissipating rock-shed |
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Yi Zhang, Francois Toutlemonde and Philippe Lussou
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| Abstract | ||
| This paper presents finite element impact analysis for the design of Structurally Dissipating Rock-shed (SDR), an innovative design of reinforced concrete rock-shed. By using an appropriate finite element impact algorithm, the SDR structure is modelled in a simplified but efficient way. The numerical results are firstly verified through comparisons with the results of the experiments recently realized by ESIGEC and TONELLO I.C. It is shown that, using this impact algorithm, it is possible to correctly predict the SDR structural behaviour under different rock-fall impact conditions. Moreover, the numerical results show that the slab centre is the critical impact location for reinforced concrete slab design. The impact analyses have thus been focused on the impacts at the slab centre for the SDR structural optimization. Several series of parametric studies have been carried out with respect to load cases and engineering parameters choices. These numerical results support the robustness of the new SDR concept, and serve to optimize SDR structure and improve its conventional engineering design, especially for ensuring the slab punching shear resistance. | ||
| Key Words | ||
| structurally dissipating rock-shed; rock-fall impact; finite element impact analysis; structural; design; structure sensitivity study; punching shear. | ||
| Address | ||
| Yi Zhang : Technical Direction, Spie batignolles TPCI, 11 rue Lazare Hoche,92774 Boulogne-Billancourt Cedex, France Francois Toutlemonde : Universite Paris Est-LCPC (Laboratoire Central des Ponts et Chaussees),58 bd. Lefebvre, 75732 Paris Cedex 15, France Philippe Lussou : Lafarge Centre de Recherche, 95 rue du Montmurier 38070 Saint-Quentin-Fallavier Cedex, France Universite Paris Est-LCPC (Laboratoire Central des Ponts et Chaussees),58 bd. Lefebvre, 75732 Paris Cedex 15, France | ||