A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PRESTRESSED CONCRETE GIRDER AND PRESTRESS INTRODUCTION METHOD
To provide a concrete girder with high durability that does not require maintenance costs by introducing a prestress into a concrete girder structure without using metal members.SOLUTION: A prestress concrete girder 1 is provided with a concrete movable girder 10A with a sheath 45 embedded therein, a concrete fixed girder 10B having a gap G with respect to the movable girder 10A and having a sheath 45 embedded therein, and a tensioned continuous fiber-reinforced stranded wire 40 providing untwisting fixing tools 43 at both ends, passed through the sheath 45 of the movable girder 10A and the sheath 45 of the fixed girder 10B, and having one end fixed inside the movable girder 10A and the other end fixed inside the fixed girder 10B. The continuous fiber-reinforced stranded wire 40 is tensioned by extending a gap G by a jack 50 installed in the gap G. A force caused by the continuous fiber-reinforced stranded wire 40 in a tension state that causes the movable girder 10A and the fixed girder 10B to approach each other is supported by a supporting reaction body provided in the gap G.SELECTED DRAWING: Figure 1
【課題】金属製の部材を使用せずにコンクリート桁構造物にプレストレスを導入して、維持管理費用を必要としない高耐久なコンクリート桁を提供する。【解決手段】プレストレスト・コンクリート桁１は，シース４５が埋設されたコンクリート製の可動桁１０Ａ，可動桁１０Ａとの間に隙間Ｇをあけて設けられシース４５が埋設されたコンクリート製の固定桁１０Ｂ，両端部に解撚定着具４３を備え，可動桁１０Ａのシース４５と固定桁１０Ｂのシース４５とに通され，一端部が可動桁１０Ａ内に，他端部が固定桁１０Ｂ内にそれぞれ定着された，緊張状態の連続繊維補強撚り線４０を備える。隙間Ｇに設置されるジャッキ５０によって隙間Ｇが押し広げられることによって，連続繊維補強撚り線４０が緊張される。緊張状態の連続繊維補強撚り線４０によって生じる可動桁１０Ａと固定桁１０Ｂとを互いに近づける向きの力は隙間Ｇに設けられる支持反力体によって支えられる。【選択図】図１
PRESTRESSED CONCRETE GIRDER AND PRESTRESS INTRODUCTION METHOD
To provide a concrete girder with high durability that does not require maintenance costs by introducing a prestress into a concrete girder structure without using metal members.SOLUTION: A prestress concrete girder 1 is provided with a concrete movable girder 10A with a sheath 45 embedded therein, a concrete fixed girder 10B having a gap G with respect to the movable girder 10A and having a sheath 45 embedded therein, and a tensioned continuous fiber-reinforced stranded wire 40 providing untwisting fixing tools 43 at both ends, passed through the sheath 45 of the movable girder 10A and the sheath 45 of the fixed girder 10B, and having one end fixed inside the movable girder 10A and the other end fixed inside the fixed girder 10B. The continuous fiber-reinforced stranded wire 40 is tensioned by extending a gap G by a jack 50 installed in the gap G. A force caused by the continuous fiber-reinforced stranded wire 40 in a tension state that causes the movable girder 10A and the fixed girder 10B to approach each other is supported by a supporting reaction body provided in the gap G.SELECTED DRAWING: Figure 1
【課題】金属製の部材を使用せずにコンクリート桁構造物にプレストレスを導入して、維持管理費用を必要としない高耐久なコンクリート桁を提供する。【解決手段】プレストレスト・コンクリート桁１は，シース４５が埋設されたコンクリート製の可動桁１０Ａ，可動桁１０Ａとの間に隙間Ｇをあけて設けられシース４５が埋設されたコンクリート製の固定桁１０Ｂ，両端部に解撚定着具４３を備え，可動桁１０Ａのシース４５と固定桁１０Ｂのシース４５とに通され，一端部が可動桁１０Ａ内に，他端部が固定桁１０Ｂ内にそれぞれ定着された，緊張状態の連続繊維補強撚り線４０を備える。隙間Ｇに設置されるジャッキ５０によって隙間Ｇが押し広げられることによって，連続繊維補強撚り線４０が緊張される。緊張状態の連続繊維補強撚り線４０によって生じる可動桁１０Ａと固定桁１０Ｂとを互いに近づける向きの力は隙間Ｇに設けられる支持反力体によって支えられる。【選択図】図１
PRESTRESSED CONCRETE GIRDER AND PRESTRESS INTRODUCTION METHOD
プレストレスト・コンクリート桁およびプレストレス導入方法
TANAKA YOSHIHIRO (author) / TANAKA TORU (author) / KODA EIJI (author)
2020-05-07
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
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