The invention discloses a sea-crossing bridge
pier anti-collision buffer device and belongs to the field of bridge safety protection. The device comprises a first anti-collision
assembly. The first anti-collision
assembly and a second anti-collision
assembly are connected to a
pier in a sleeving mode. The second anti-collision assembly is connected with the first anti-collision assembly through asteel
rope; the first anti-collision assembly comprises a protective
gasket connected to the outer side of the
pier in a sleeving mode; a main ring sleeve is arranged on the outer side of the protective
gasket; and a coaxial ring groove is formed in the inner wall surface of the main ring sleeve, two ring grooves are formed in the inner wall surface of the main ring sleeve, rotatable sliding steelrings are installed in the ring grooves and connected with the outer wall surface of the protective
gasket through supporting pieces, the supporting pieces are arranged in a surrounding mode, and a first
buoyancy air bag is arranged between the upper supporting piece and the lower supporting piece and surrounds the protective gasket. According to the device, a protection position can be adjustedalong with a
water level, the piers in water can be protected at the same time, a ship movement direction can be changed during collision, graded collision is achieved, ship collision damage is reduced, and a radial
impact force borne by skilled transition is decreased.