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A platform for research: civil engineering, architecture and urbanism
STRUCTURE AND METHOD FOR REINFORCING EXISTING COLUMN
PROBLEM TO BE SOLVED: To provide a reinforcing technique that reduces an area of a cross-section intersecting with an axial direction of an existing column after being reinforced.SOLUTION: A reinforcement structure 5 is formed by installing a reinforcing bar part on an outer periphery of a cylindrical bridge pier section, the reinforcing bar part comprising a plurality of main reinforcing bars 5a placed vertically along the outer periphery, and a spiral hoop 5b wound spirally on the outer periphery of the bridge pier section to surround the plurality of main reinforcing bars 5a. The reinforcement structure further includes a mortar part 5c covering the reinforcing bar part. The spiral hoop 5b is wound on the outer periphery of the bridge pier part with an inner diameter of the loop contracted to be smaller than a diameter of the bridge pier part. This reduces an area of the bridge pier part after being reinforced. Since the spiral hoop 5b is wound firmly on the outer periphery of the bridge pier part, reinforcement strength may be improved for the bridge pier part. Since the spiral hoop comprises a plurality of reinforcing bars, stress generated on the spiral hoop 5b is dispersed and distortion may be mitigated.SELECTED DRAWING: Figure 3
【課題】補強後の既設柱の軸方向に交差する断面の面積を縮小させることが可能な補強技術を提供する。【解決手段】円柱状の橋脚部の外周に、その外周に沿って縦置きされた複数本の主筋５ａと、複数本の主筋５ａを取り囲むように橋脚部の外周に螺旋状に巻かれた螺旋フープ筋５ｂとで構成される補強鉄筋部を設けるとともに、その補強鉄筋部を覆うようにモルタル部５ｃを設けることで補強構造部５を形成した。螺旋フープ筋５ｂは、そのループ内径が橋脚部の直径よりも小さく縮径された状態で橋脚部の外周に巻き付けられる。これにより、補強後の橋脚部の面積を小さくすることができる。また、螺旋フープ筋５ｂを橋脚部の外周にしっかりと巻き付けることができるので、橋脚部の補強強度を向上させることができる。さらに、螺旋フープ筋を複数の鉄筋で構成することにより、螺旋フープ筋５ｂに生じる応力を分散して歪みを低減することができる。【選択図】図３
STRUCTURE AND METHOD FOR REINFORCING EXISTING COLUMN
PROBLEM TO BE SOLVED: To provide a reinforcing technique that reduces an area of a cross-section intersecting with an axial direction of an existing column after being reinforced.SOLUTION: A reinforcement structure 5 is formed by installing a reinforcing bar part on an outer periphery of a cylindrical bridge pier section, the reinforcing bar part comprising a plurality of main reinforcing bars 5a placed vertically along the outer periphery, and a spiral hoop 5b wound spirally on the outer periphery of the bridge pier section to surround the plurality of main reinforcing bars 5a. The reinforcement structure further includes a mortar part 5c covering the reinforcing bar part. The spiral hoop 5b is wound on the outer periphery of the bridge pier part with an inner diameter of the loop contracted to be smaller than a diameter of the bridge pier part. This reduces an area of the bridge pier part after being reinforced. Since the spiral hoop 5b is wound firmly on the outer periphery of the bridge pier part, reinforcement strength may be improved for the bridge pier part. Since the spiral hoop comprises a plurality of reinforcing bars, stress generated on the spiral hoop 5b is dispersed and distortion may be mitigated.SELECTED DRAWING: Figure 3
【課題】補強後の既設柱の軸方向に交差する断面の面積を縮小させることが可能な補強技術を提供する。【解決手段】円柱状の橋脚部の外周に、その外周に沿って縦置きされた複数本の主筋５ａと、複数本の主筋５ａを取り囲むように橋脚部の外周に螺旋状に巻かれた螺旋フープ筋５ｂとで構成される補強鉄筋部を設けるとともに、その補強鉄筋部を覆うようにモルタル部５ｃを設けることで補強構造部５を形成した。螺旋フープ筋５ｂは、そのループ内径が橋脚部の直径よりも小さく縮径された状態で橋脚部の外周に巻き付けられる。これにより、補強後の橋脚部の面積を小さくすることができる。また、螺旋フープ筋５ｂを橋脚部の外周にしっかりと巻き付けることができるので、橋脚部の補強強度を向上させることができる。さらに、螺旋フープ筋を複数の鉄筋で構成することにより、螺旋フープ筋５ｂに生じる応力を分散して歪みを低減することができる。【選択図】図３
STRUCTURE AND METHOD FOR REINFORCING EXISTING COLUMN
既設柱の補強構造および補強方法
YAMAGUCHI OSAMU (author) / NUMATA KEN (author) / MISAWA TAKASHI (author)
2016-12-22
Patent
Electronic Resource
Japanese
REINFORCING STRUCTURE OF EXISTING COLUMN AND METHOD OF REINFORCING EXISTING COLUMN
| European Patent Office | 2022