کمترین هزینه با بیشترین کیفیت a b s t r a c t The failure modes of concrete gravity dams under blast loading are the key problems to evaluate the antiknock safety of the dam. Dynamic failure process of structures under blast loading is much more complicated than that under other loadings such as static and earthquake loadings. Many researchers have conducted comprehensive experimental and numerical investigations of civil structures’ response to blast loading. However, corresponding studies of concrete gravity dams are limited. This paper performs numerical simulation of antiknock performance and failure modes of concrete gravity dams under blast loading. Firstly, the pressure and impulse produced by underwater explosion are calculated. The numerical results are verified by comparing with analytical expressions in different scaled distances. By analyzing the effects of mesh size, some interesting conclusions regarding the mesh size for actual events are obtained. Subsequently, ...
پاورپوینت