BRIDGE SUPPORT EQUIPMENT OF ONE SIDE DIRECTION FOR PREVENTION OF FALL BRIDGE OF A BRIDGE

摘要

A unidirectional bridge bearing device for bridge fall prevention is provided to prevent the fall of a bridge by preventing a deck plate from being separated from a bridge bearing by expansion and contraction by allowing the vertical movement of an upper plate and a lower plate and limiting the horizontal movement using a link portion. The unidirectional bridge bearing device(100) for bridge fall prevention comprises an upper plate(110) provided with plural fastening grooves(113) coupled with bolts(14) connected with a deck plate to install on the lower part of the deck plate strongly, many primary coupling grooves(115) formed on two sides, a primary mounting groove(119) formed on the lower part to be opened downward and a primary wedge type corrugated part(117) formed on the bottom of the primary mounting groove, a lower plate(120) installed on a pier symmetrically to the upper plate and provided with secondary coupling grooves(121) formed on two sides, a secondary mounting groove(125) formed on the upper part to be opened upward and a secondary wedge type corrugated part(123) formed on the bottom of the secondary mounting groove, a shock absorbing pad(130) installed between the primary mounting groove and the secondary mounting groove to absorb the load and impulsive force transferred from the deck plate and provided with projections(131) which make surface contact with the primary and secondary wedge type corrugated parts to prevent sliding between the primary mounting groove and the secondary mounting groove, and a link portion(140) installed between the upper plate and the lower plate to make the vertical movement of the upper plate and the lower plate possible and to limit the horizontal movement and composed of a primary connector(151) and a secondary connector(161) connected with the primary connector by hinge pins(168).