Pseudo jointless bridge construction made of steel plate girder with overhanged end widen and extended flange composed of concrete block

摘要

The present invention constitutes an end-extended protruding flange so that a certain length protrudes from both ends in the longitudinal direction of the steel girder, and forms a supporting concrete block on the upper part, so that when the girder is mounted on the alternating structure, the girder is mounted on the girder in the longitudinal direction. Steel with a supporting expansion flange and a supporting concrete block that prevents the weight of the projecting expansion unit and the weight of the vehicle wheels from acting on the chest wall, as well as the installation of an expansion joint by allowing the supporting concrete block to protrude further out of the bridge support. It relates to a girder and a method for constructing a jointless bridge using the same. One preferred embodiment of a steel girder having an end-extended protruding flange and a base concrete block of the present invention consists of an upper flange and a lower flange and a web connecting a widthwise central portion of the upper flange and the lower flange to form an H-shaped cross section The main body; An end extension protruding flange formed of a horizontal plate-shaped support portion formed at a predetermined width larger than the width of the upper flange and a side portion formed upward from the support portion, and joined to protrude outward by a predetermined length from both ends in the longitudinal direction of the H-shaped body; It is made to include; a support concrete block formed to a certain thickness only in the entire width or a part of the width of the upper surface of the end extension projecting flange.