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SHEAR REINFORCEMENT STRUCTURE OF REINFORCED-CONCRETE STRUCTURE
PROBLEM TO BE SOLVED: To improve fixation performance of a reinforcement member, to surely increase shear load bearing force of a reinforced-concrete structure, and to improve workability.SOLUTION: A reinforcement member insertion hole 20 bored in a reinforced-concrete structure 10 comprises the innermost side insertion hole 21 positioned on the innermost side of the reinforced-concrete structure 10 and a diameter expanding insertion hole 22 positioned on this side in the insertion direction of a reinforcement member 30 and in a concrete-covering thickness of an existing main reinforcement 41 and having an inner diameter larger than an inner diameter of the innermost side insertion hole 21. The reinforcement member 30 inserted into the reinforcement member insertion hole 20 comprises a body part 31, a first fixation body 32 provided in an end part of the body part 31 and a second fixation body 33 connected by a connection part 35 to the first fixation body 32 on this side in the insertion direction and arranged in the vicinity of the existing reinforcement 41 in the diameter expanding insertion hole 22. A thickness of the connection part 35 is thinner than the body part 31, and a maximum diameter of the second fixation body 33 is two times or more of a maximum diameter of the body part 31.SELECTED DRAWING: Figure 1
【課題】 補強部材の定着性能を向上させて、確実に鉄筋コンクリート構造物のせん断耐荷力を増加させるとともに、施工性を向上させる。【解決手段】 鉄筋コンクリート構造物１０に穿孔した補強部材挿入孔２０は、鉄筋コンクリート構造物１０の奥側に位置する奥側挿入孔２１と、補強部材３０の挿入方向の手前側かつ既設主筋４１のコンクリート被り厚内に位置するとともに、奥側挿入孔２１の内径よりも大きな内径の拡径挿入孔２２とを備える。補強部材挿入孔２０に挿入する補強部材３０は、本体部３１と、本体部３１の端部に設けた第１の定着体３２と、挿入方向の手前側の第１の定着体３２と接続部３５により接続され、拡径挿入孔２２内において既設鉄筋４１の近傍に配設する第２の定着体３３とを備える。接続部３５の太さは、本体部３１よりも細く、第２の定着体３３の最大径は、本体部３１の最大径の２倍以上である。【選択図】図１
SHEAR REINFORCEMENT STRUCTURE OF REINFORCED-CONCRETE STRUCTURE
PROBLEM TO BE SOLVED: To improve fixation performance of a reinforcement member, to surely increase shear load bearing force of a reinforced-concrete structure, and to improve workability.SOLUTION: A reinforcement member insertion hole 20 bored in a reinforced-concrete structure 10 comprises the innermost side insertion hole 21 positioned on the innermost side of the reinforced-concrete structure 10 and a diameter expanding insertion hole 22 positioned on this side in the insertion direction of a reinforcement member 30 and in a concrete-covering thickness of an existing main reinforcement 41 and having an inner diameter larger than an inner diameter of the innermost side insertion hole 21. The reinforcement member 30 inserted into the reinforcement member insertion hole 20 comprises a body part 31, a first fixation body 32 provided in an end part of the body part 31 and a second fixation body 33 connected by a connection part 35 to the first fixation body 32 on this side in the insertion direction and arranged in the vicinity of the existing reinforcement 41 in the diameter expanding insertion hole 22. A thickness of the connection part 35 is thinner than the body part 31, and a maximum diameter of the second fixation body 33 is two times or more of a maximum diameter of the body part 31.SELECTED DRAWING: Figure 1
【課題】 補強部材の定着性能を向上させて、確実に鉄筋コンクリート構造物のせん断耐荷力を増加させるとともに、施工性を向上させる。【解決手段】 鉄筋コンクリート構造物１０に穿孔した補強部材挿入孔２０は、鉄筋コンクリート構造物１０の奥側に位置する奥側挿入孔２１と、補強部材３０の挿入方向の手前側かつ既設主筋４１のコンクリート被り厚内に位置するとともに、奥側挿入孔２１の内径よりも大きな内径の拡径挿入孔２２とを備える。補強部材挿入孔２０に挿入する補強部材３０は、本体部３１と、本体部３１の端部に設けた第１の定着体３２と、挿入方向の手前側の第１の定着体３２と接続部３５により接続され、拡径挿入孔２２内において既設鉄筋４１の近傍に配設する第２の定着体３３とを備える。接続部３５の太さは、本体部３１よりも細く、第２の定着体３３の最大径は、本体部３１の最大径の２倍以上である。【選択図】図１
SHEAR REINFORCEMENT STRUCTURE OF REINFORCED-CONCRETE STRUCTURE
鉄筋コンクリート構造物のせん断補強構造
MISHIMA TETSUYA (author) / YONEDA DAIKI (author) / SATO FUMINORI (author) / YAMAMOTO KAZUNORI (author) / MIYATA KATSUHARU (author) / YAMAZAKI SHOJI (author)
2017-09-07
Patent
Electronic Resource
Japanese
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