RIGID JOINT FRAME STRUCTURE OF BRIDGE PIER AND MAIN GIRDER

摘要

PROBLEM TO BE SOLVED: To provide a rigid joint frame structure of a bridge pier and a main girder, which can effectively inhibit the expansion/contraction, deflection and torsion of the main girder by increasing the strength of rigid connection between a bridge beam and the concrete bridge pier, which can synergistically increase the strength of connecting concrete itself against the expansion/contraction, deflection, the torsion, etc., and which is effective for bridge fall prevention measures against severe earthquakes.;SOLUTION: In this rigid joint frame structure of the bridge pier 1 and the main girder 3, the concrete bridge pier 1, and the plurality of main girders 3, which are juxtaposed and supported on the bridge seat surface 2 of the bridge pier 1, are connected together via the connecting concrete 4 which is placed with a thickness greater than the thickness of cover concrete on the bridge seat surface 2; and the bridge pier 1 and the main girder 3 are connected together by means of a connecting rod 5 which is raised in the connecting concrete 4 from the bridge seat surface 2. A female screw member 6 is screwed to the upper end of the connecting rod 5; a perpendicular fastening force generated by the screwing of the female screw member 6 is transferred to the main girder 3 via a connecting rod fastening seat 7 which is annexed to the main girder 3, so that the bridge pier 1 and the main girder 3 can be connected together.;COPYRIGHT: (C)2010,JPO&INPIT