Analysis of the synergetic effects of blast wave and fragment on concrete bridges

The complicated loading caused by explosions is not well understood, so the effect is often simplified when calculated. In order to increase the bridge protective level, a penetrating study of the mechanism of the synergetic effect of blast wave and fragment is necessary. Numerical simulation is used to analyse the dynamic response characteristics and the damage performances of the reinforced concrete bridge. Three conditions were designed to research the synergetic effect of the blast wave and fragment on the bridge. The research indicates that the synergetic effect is larger than the arithmetic sum of the effect of blast wave and fragment separately, which should be taken into account in the protection of bridge.