Expandable bridge sidewalk and it's construction method

摘要

The present invention relates to an existing bridging concrete which is constructed by integrating a structural H beam, a fixing bracket and a cantilever bracket into a conventional bridging structure to secure a structural safety and integration behavior by constructing a bridging structure, The purpose is to provide. In order to accomplish the above object, the present invention provides an anchor steel reinforced concrete bridge having an integrated steel reinforced concrete bridge structure, An anchor hole formed in the package and having a plurality of holes drilled to a predetermined diameter and depth; Wherein the upper flange and the lower flange are fixed to the anchor bolt and are formed of an upper flange and a lower flange and a web, a front end connection member is attached to the upper flange, a drain hole is formed at a predetermined interval at the lower end of the web, A structural H beam provided with an H beam reinforcement and welded with a vertical stiffener over the upper flange, the web and the lower flange; An anchor hole penetrating through the structural H beam end side bridge top plate; A chemical anchor bolt connected to the anchor hole; A curb placed and cured on the anchor reinforcement, the chemical anchor bolt, and the structural H beam; A bracket fixed to the structural H beam with high tension bolts; An epoxy resin filled between the structural H beam and the anchor hole; A rectangular prismatic structure installed perpendicularly to the structural H beam; A synthetic deck fixedly installed at a right angle to the rectangular prismatic structure; A railing mounted on an end of the composite deck; And a barrier to be fixed to the upper end of the curb. In order to accomplish the above object, the present invention provides a method of constructing a bridging type bridge structure having a structural integration with existing bridge concrete according to the present invention, comprising the steps of: Cutting and demolding steps; Chipping the portion of the barrier wall to repair and curing a portion of the concrete to reinforce and planarize the concrete surface of the demolished portion; Breaking the package in the vicinity of the barrier; Chipping the package crushing portion; Providing an anchor reinforcing bar on the package planarizing portion; A plurality of anchor holes having a predetermined diameter and depth between the barrier wall planarizing portion and the package chipping portion; The end integrated with the structural H beam and the bridge top plate is drilled through the anchor hole; Disposing a structural H beam in the anchor hole and fixing the structural H beam with a chemical anchor bo Assembling the structural H beam by assembling the bracket with a high tension bo Injecting an epoxy resin between the structural H beam and the anchor space; Placing concrete on an end portion of the structural H beam at an amount corresponding to the curb width of the front end connection member to form a curb; Providing a structural square beam in a direction perpendicular to the structural H beam on the structural H beam; Providing a composite deck perpendicular to the structural square pipe on the structural square pipe; Providing a railing on an end of the composite deck and installing a new barrier on the top of the curb.