Patent ID: 6178706
Filing Date: 2001-01-30
Classification: E01D

Abstract:
A movement limiting device of a bridge bearing comprising:an upper member;a lower member which is fixedly installed to confront said upper member;a bearing between said upper and lower members such that said upper member is movable in a horizontal direction;a notch which is formed in one of said upper and lower members to extend in a bridge longitudinal direction; anda plurality of stoppers which are fixed to the other one of said upper and lower members so that said stoppers are positioned in said notch and spaced apart from each other,said upper member being capable of moving in the bridge longitudinal direction so that one of said stoppers may come in contact with a corresponding end of said notch to limit the movement of said upper member, and whereby the end of said notch pushes and thus shears the stopper so as to cancel the limitation in the movement of said upper member when a horizontal force exceeding a predetermined value is exerted on said upper member.