A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To provide a precast concrete member joining method in which a fixing force of an adhesive agent and a PC steel bar is enhanced, and in which a crack hardly occurs in a concrete member, in the case where an external force acts on a steel bar to elongate it.SOLUTION: A steel bar 9 includes a body part 11. On an outer peripheral surface of the body part 11, a plurality of spiral grooves 12 are formed around a shaft core of the body part 11. Each groove 12 is formed continuously across the entire axial direction of the body part 11. A bottom area of the groove 12 in the body part 11 is smaller than a surface area of a portion in which the groove 12 is not formed. A space is provided around the steel bar 9. In a precast concrete member joining method, after the steel bar 9 is arranged across both precast concrete members 1, 2, one out of both nuts 14, 14a is fastened and rotated, tension is introduced in the steel bar 9, and after that, an adhesive agent 27 fills a space.SELECTED DRAWING: Figure 10
【課題】接着剤とＰＣ鋼棒との定着力を高め、かつ、鋼棒に外力が働いて伸びた場合に、コンクリート部材に亀裂が生じにくいプレキャストコンクリート部材の接合方法を提供する。【解決手段】鋼棒９は本体部１１を有し、本体部１１の外周面には、本体部１１の軸芯を中心とする螺旋状の溝１２が複数本刻設され、各溝１２は、本体部１１の軸方向全体に亘って連続して形成され、本体部１１における溝１２の底面積が、溝１２が形成されていない部分の表面積より少なくなるようにし、鋼棒９の周囲に空間を設けるようにして、両プレキャストコンクリート部材１，２に渡って鋼棒９を配置した後に、両ナット１４，１４ａの何れか一方を締め付け回転して、鋼棒９に緊張力を導入し、その後、空間内に接着剤２７を充填するプレキャストコンクリート部材の接合方法。【選択図】 図１０
To provide a precast concrete member joining method in which a fixing force of an adhesive agent and a PC steel bar is enhanced, and in which a crack hardly occurs in a concrete member, in the case where an external force acts on a steel bar to elongate it.SOLUTION: A steel bar 9 includes a body part 11. On an outer peripheral surface of the body part 11, a plurality of spiral grooves 12 are formed around a shaft core of the body part 11. Each groove 12 is formed continuously across the entire axial direction of the body part 11. A bottom area of the groove 12 in the body part 11 is smaller than a surface area of a portion in which the groove 12 is not formed. A space is provided around the steel bar 9. In a precast concrete member joining method, after the steel bar 9 is arranged across both precast concrete members 1, 2, one out of both nuts 14, 14a is fastened and rotated, tension is introduced in the steel bar 9, and after that, an adhesive agent 27 fills a space.SELECTED DRAWING: Figure 10
【課題】接着剤とＰＣ鋼棒との定着力を高め、かつ、鋼棒に外力が働いて伸びた場合に、コンクリート部材に亀裂が生じにくいプレキャストコンクリート部材の接合方法を提供する。【解決手段】鋼棒９は本体部１１を有し、本体部１１の外周面には、本体部１１の軸芯を中心とする螺旋状の溝１２が複数本刻設され、各溝１２は、本体部１１の軸方向全体に亘って連続して形成され、本体部１１における溝１２の底面積が、溝１２が形成されていない部分の表面積より少なくなるようにし、鋼棒９の周囲に空間を設けるようにして、両プレキャストコンクリート部材１，２に渡って鋼棒９を配置した後に、両ナット１４，１４ａの何れか一方を締め付け回転して、鋼棒９に緊張力を導入し、その後、空間内に接着剤２７を充填するプレキャストコンクリート部材の接合方法。【選択図】 図１０
PRECAST CONCRETE MEMBER JOINING METHOD
プレキャストコンクリート部材の接合方法
ITO TAKAAKI (author)
2020-11-26
Patent
Electronic Resource
Japanese
IPC:
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
| European Patent Office | 2022
GUIDE MEMBER FOR JOINING CONCRETE PRECAST MEMBERS AND JOINING METHOD OF CONCRETE PRECAST MEMBER
| European Patent Office | 2023
CONCRETE STRUCTURE JOINING METHOD AND PRECAST CONCRETE MEMBER JOINING METHOD
| European Patent Office | 2019