STRUCTURE AND METHOD FOR REINFORCING STEEL GIRDER

• Main Authors: HIRABAYASHI MASAYA, KOBAYASHI KAORU
• Format: Patent
• Language: English; Japanese
• Published: 15.12.2016
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; OR VIADUCTS

PROBLEM TO BE SOLVED: To provide a structure and a method for reinforcing a steel girder that appropriately reinforce a steel girder having a roughly H-shaped cross-section.SOLUTION: A steel girder reinforcing structure 100 has a pair of energizing means 10 formed on both sides of a web 1c of a steel girder 1 having a roughly H-shaped cross section. Since the energizing means 10 energizes in a direction to separate an upper flange 1a from a lower flange 1b, the steel girder 1 may be reinforced so as to suppress an oscillation that causes the web 1c to deflect in a direction orthogonal to a bridge axis. Especially, the steel girder reinforcing structure 100 may be configured by installing the energizing means 10 between the upper flange 1a and the lower flange 1b using expanding force of an elastic member 13. As such, the steel girder 1 may be reinforced in a short period of time without welding the energizing means 10 to the steel girder 1.SELECTED DRAWING: Figure 1 【課題】略Ｈ形断面を有する鋼桁を好適に補強することができる鋼桁補強構造及び鋼桁補強方法を実現する。【解決手段】略Ｈ形断面を有する鋼桁１のウェブ１ｃの両側に対を成して付勢手段１０を設置した鋼桁補強構造１００において、付勢手段１０は上フランジ１ａと下フランジ１ｂを離間させる方向に付勢しているので、ウェブ１ｃが橋軸直角方向に撓む首振りを抑制するように鋼桁１を補強することができる。特に、弾性部材１３が拡張する力を利用して、上フランジ１ａと下フランジ１ｂの間に付勢手段１０を設置して鋼桁補強構造１００を構築することができるので、付勢手段１０を鋼桁１に溶接することなく、短時間の作業で鋼桁１の補強を行うことを可能にした。【選択図】図１