An anti-underwater explosion impact device for bridge piers

Abstract

The invention relates to an underwater explosion and shock resistant device for a bridge pier. The underwater explosion and shock resistant device comprises elastic binding rings (2), a rigidity pouring jacket and a hollow rubber covering layer (6), wherein the elastic binding rings (2), the rigidity pouring jacket and the hollow rubber covering layer (6) are arranged on the outer side of the bridge pier (1) from interior to exterior in sequence. The elastic binding rings (2) are tied on the outer side of the bridge pier (1) and are fixedly connected with the rigidity pouring jacket. A truss structure (4) is arranged between the rigidity pouring jacket and the elastic binding rings (2). The hollow rubber covering layer (6) is adhered to the outer side of the rigidity pouring jacket. On the basis of the damping mismatch principle and the stress wave transformation principle, the underwater explosion and shock resistant device can effectively reduce impact responses of accelerated speed of the bridge pier and the like under the action of underwater explosion through the arrangement of the elastic binding rings, the rigidity pouring jacket, the hollow rubber covering layer and the like on the periphery of the bridge pier underwater, weakens explosive shock waves caused by underwater explosion, absorbs energy of underwater explosion, reduces damage of the bridge pier under the load of underwater explosion and achieves the purpose of protecting the bridge pier.

Description

technical field [0001] The invention relates to the field of bridge safety, more specifically, to a device for resisting underwater explosion shocks for bridge piers. Background technique [0002] Bridges are the lifeblood of traffic routes, and destroying the enemy's large bridges in wartime has become an important means of blocking traffic. In recent years, with the construction of sea-crossing bridges and large-scale river-crossing bridges, wartime protection of large bridges has become an important research topic. The damage to bridge piers by means of fish, mines or small boats carrying explosives is more difficult to repair than bridge deck damage, and the damage effect is more obvious. The threat of underwater explosions to deep-water bridge piers is even more obvious. [0003] Deep water bridge piers directly bear the initial shock wave and bubble pulsation pressure generated by the underwater explosion without fortification, and because the bridge piers are general...

AI Technical Summary

Problems solved by technology

[0004] The traditional anti-blast design does not consider the stress wave effect of the underwater explosion load, and directly adopts the method of amplifying the static load to consider the explosion load, and adopts the method of increasing the structural stiffness in the design, but because this method will increase the overall stiffness of the pier. Large, but it is easy to cause the overall damage of the pier

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