This paper presents a computational approach for the evaluation of the load carrying capacity and the safety check of the prestressed concrete (PC) rock-shed structures under falling rocks. At first, the impact response analysis is performed by connecting the distinct element method with the rigid body spring model in order to consider the interaction of PC rock-shed and sand cushion. Secondly, the load carrying capacity of PC rock-shed is evaluated by performing the impact failure analysis of PC rock-shed. It is confirmed that this analytical method can evaluate the load carrying capacity of PC rock-shed by considering the effect of lateral prestressing. Finally, the safety check of PC rock-shed is performed by using the energy criterion in which the limit absorbed energy is found by the incremental elastic-plastic analysis and the transmitted kinematic energy is obtained by the conservative law of momentum.
|Number of pages||10|
|Journal||Doboku Gakkai Rombun-Hokokushu/Proceedings of the Japan Society of Civil Engineers|
|Issue number||495 pt 1-2|
|Publication status||Published - Dec 1 1994|
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