A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
STRUCTURE AND METHOD FOR ANCHORING ANCHOR REINFORCEMENT
PROBLEM TO BE SOLVED: To provide a structure and method for anchoring an anchor reinforcement with high resistance against tensile force.SOLUTION: An anchoring structure 1 for an anchoring reinforcement is applied when adding a new building frame to an existing reinforced concrete building frame 3. In the anchoring structure 1 for an anchoring reinforcement, an anchor reinforcement 2 is inserted into a hole 4 formed in concrete C of the existing building frame 3. The anchor reinforcement 2 is anchored by a filler 5 filling a gap between the hole 4 and the anchor reinforcement 2 by an injection system. A depth of the hole 4 equals or is greater than 15 times a diameter d of the anchor reinforcement 2, and a diameter H of the hole 4 satisfies either of formulas H≥τ/τ×d or H≥K×d, (where τrefers to adhesive strength per unit area to the concrete C along a circumference of the anchoring reinforcement 2, τrefers to adhesive strength per unit area on a wall surface of the hole 4, and K refers to a ratio between adhesive resistance against the concrete C on a surface of the anchoring reinforcement 2 and adhesive resistance against the wall surface of the hole 4.) The filler 5 is an inorganic material having compression strength greater than the concrete C of the existing building frame 3.SELECTED DRAWING: Figure 1
【課題】引張力への対抗力が高い定着筋の定着構造及び定着方法を提供する。【解決手段】鉄筋コンクリート製の既存構造躯体３に、新たな構造躯体を増築する際に適用される、定着筋の定着構造１であって、前記既存構造躯体３のコンクリートＣに設けられた孔４に、定着筋２が挿入され、該定着筋２が、前記孔４と定着筋２との間隙に注入方式により充填された充填材５によって定着されており、前記孔４の深さは、前記定着筋２の径ｄの１５倍以上であり、前記孔４の径Ｈは、Ｈ≧τｂｓｕ（ｃ）／τｂｈｕ×ｄまたはＨ≧Ｋ×ｄを満たし（ただし、τｂｓｕ（ｃ）は前記定着筋２周長におけるコンクリートＣに対する単位面積あたりの付着強度、τｂｈｕは前記孔４の壁面における単位面積あたりの付着強度、Ｋは前記定着筋２表面のコンクリートＣに対する付着抵抗と前記孔４の壁面における付着抵抗の比である）、前記充填材５は、前記既存構造躯体３のコンクリートＣよりも圧縮強度が高い無機系材料である、定着筋の定着構造１を提供する。【選択図】図１
STRUCTURE AND METHOD FOR ANCHORING ANCHOR REINFORCEMENT
PROBLEM TO BE SOLVED: To provide a structure and method for anchoring an anchor reinforcement with high resistance against tensile force.SOLUTION: An anchoring structure 1 for an anchoring reinforcement is applied when adding a new building frame to an existing reinforced concrete building frame 3. In the anchoring structure 1 for an anchoring reinforcement, an anchor reinforcement 2 is inserted into a hole 4 formed in concrete C of the existing building frame 3. The anchor reinforcement 2 is anchored by a filler 5 filling a gap between the hole 4 and the anchor reinforcement 2 by an injection system. A depth of the hole 4 equals or is greater than 15 times a diameter d of the anchor reinforcement 2, and a diameter H of the hole 4 satisfies either of formulas H≥τ/τ×d or H≥K×d, (where τrefers to adhesive strength per unit area to the concrete C along a circumference of the anchoring reinforcement 2, τrefers to adhesive strength per unit area on a wall surface of the hole 4, and K refers to a ratio between adhesive resistance against the concrete C on a surface of the anchoring reinforcement 2 and adhesive resistance against the wall surface of the hole 4.) The filler 5 is an inorganic material having compression strength greater than the concrete C of the existing building frame 3.SELECTED DRAWING: Figure 1
【課題】引張力への対抗力が高い定着筋の定着構造及び定着方法を提供する。【解決手段】鉄筋コンクリート製の既存構造躯体３に、新たな構造躯体を増築する際に適用される、定着筋の定着構造１であって、前記既存構造躯体３のコンクリートＣに設けられた孔４に、定着筋２が挿入され、該定着筋２が、前記孔４と定着筋２との間隙に注入方式により充填された充填材５によって定着されており、前記孔４の深さは、前記定着筋２の径ｄの１５倍以上であり、前記孔４の径Ｈは、Ｈ≧τｂｓｕ（ｃ）／τｂｈｕ×ｄまたはＨ≧Ｋ×ｄを満たし（ただし、τｂｓｕ（ｃ）は前記定着筋２周長におけるコンクリートＣに対する単位面積あたりの付着強度、τｂｈｕは前記孔４の壁面における単位面積あたりの付着強度、Ｋは前記定着筋２表面のコンクリートＣに対する付着抵抗と前記孔４の壁面における付着抵抗の比である）、前記充填材５は、前記既存構造躯体３のコンクリートＣよりも圧縮強度が高い無機系材料である、定着筋の定着構造１を提供する。【選択図】図１
STRUCTURE AND METHOD FOR ANCHORING ANCHOR REINFORCEMENT
定着筋の定着構造及び定着方法
SUGIYAMA TOMOAKI (author) / WATANABE HIDEYOSHI (author)
2017-03-16
Patent
Electronic Resource
Japanese
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