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A platform for research: civil engineering, architecture and urbanism
STRUCTURE AND METHOD FOR REINFORCING EXISTING CONCRETE STRUCTURE
PROBLEM TO BE SOLVED: To provide a reinforcing structure for reinforcing an existing concrete structure by a concrete lining method, the reinforcing structure enabling a reinforcing bar in an axial direction to be anchored to a footing or other foundation body without interfering with existing reinforcing bars.SOLUTION: An existing concrete structure (2) having a footing or other foundation body (4) and a bridge pier or other structural body (6) extending from the foundation body is reinforced by a concrete lining method. A reinforcing bar (12) in an axial direction for reinforcement is placed on an outer surface of the bridge pier, and is anchored to the footing at a lower edge side through root lining concrete (14) and a connecting member (16), thereby enhancing bending strength. The remaining part of the reinforcing bar in the axial direction is embedded in lining concrete (20) that covers the bridge pier. The connecting member fixes the lining concrete on the footing. Since a degree of freedom of layout of the connecting member is higher than the reinforcing bar in the axial direction, an erection hole (22) for erecting the connecting member may be formed at a location that does not require cutting of an existing reinforcing bar (8c) in the footing.SELECTED DRAWING: Figure 1
【課題】コンクリート巻き立て工法による既設コンクリート構造物の補強において、既設鉄筋と干渉せずに、補強のための軸方向鉄筋をフーチング等の基体に定着できる補強構造を提供する。【解決手段】フーチング等の基体（４）及び基体から延出する橋脚等の構造物本体（６）を備えた既設コンクリート構造物（２）をコンクリート巻き立て工法によって補強する。補強のための軸方向鉄筋（１２）は、橋脚の外面に配置され、その下端側において根巻きコンクリート（１４）及び結合用部材（１６）を介してフーチングに定着し、曲げ耐力を向上させる。軸方向鉄筋の残りの部分は、橋脚を覆う巻き立てコンクリート（２０）に埋め込まれる。結合用部材は、根巻きコンクリートをフーチングに定着させるが、軸方向鉄筋に比べて配置の自由度が高いため、結合用部材を建て込むための建て込み用孔（２２）は、フーチングに含まれる既設鉄筋（８ｃ）を切断する必要がない位置に設けることができる。【選択図】図１
STRUCTURE AND METHOD FOR REINFORCING EXISTING CONCRETE STRUCTURE
PROBLEM TO BE SOLVED: To provide a reinforcing structure for reinforcing an existing concrete structure by a concrete lining method, the reinforcing structure enabling a reinforcing bar in an axial direction to be anchored to a footing or other foundation body without interfering with existing reinforcing bars.SOLUTION: An existing concrete structure (2) having a footing or other foundation body (4) and a bridge pier or other structural body (6) extending from the foundation body is reinforced by a concrete lining method. A reinforcing bar (12) in an axial direction for reinforcement is placed on an outer surface of the bridge pier, and is anchored to the footing at a lower edge side through root lining concrete (14) and a connecting member (16), thereby enhancing bending strength. The remaining part of the reinforcing bar in the axial direction is embedded in lining concrete (20) that covers the bridge pier. The connecting member fixes the lining concrete on the footing. Since a degree of freedom of layout of the connecting member is higher than the reinforcing bar in the axial direction, an erection hole (22) for erecting the connecting member may be formed at a location that does not require cutting of an existing reinforcing bar (8c) in the footing.SELECTED DRAWING: Figure 1
【課題】コンクリート巻き立て工法による既設コンクリート構造物の補強において、既設鉄筋と干渉せずに、補強のための軸方向鉄筋をフーチング等の基体に定着できる補強構造を提供する。【解決手段】フーチング等の基体（４）及び基体から延出する橋脚等の構造物本体（６）を備えた既設コンクリート構造物（２）をコンクリート巻き立て工法によって補強する。補強のための軸方向鉄筋（１２）は、橋脚の外面に配置され、その下端側において根巻きコンクリート（１４）及び結合用部材（１６）を介してフーチングに定着し、曲げ耐力を向上させる。軸方向鉄筋の残りの部分は、橋脚を覆う巻き立てコンクリート（２０）に埋め込まれる。結合用部材は、根巻きコンクリートをフーチングに定着させるが、軸方向鉄筋に比べて配置の自由度が高いため、結合用部材を建て込むための建て込み用孔（２２）は、フーチングに含まれる既設鉄筋（８ｃ）を切断する必要がない位置に設けることができる。【選択図】図１
STRUCTURE AND METHOD FOR REINFORCING EXISTING CONCRETE STRUCTURE
既設コンクリート構造物の補強構造及び補強方法
FUJIWARA YASUHISA (author) / ANDO NAOFUMI (author) / KUMAGAI YUJI (author)
2016-09-23
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
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