Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
PLASTIC HINGE STRUCTURE OF RC COLUMNAR STRUCTURE AND METHOD FOR REPAIRING PLASTIC HINGE PART OF RC COLUMNAR STRUCTURE
To provide a plastic hinge structure of an RC columnar structure and a method for repairing a plastic hinge part of the RC columnar structure capable of reducing the residual strain at the plastic hinge part while preventing brittle failure such as collapse and also immediately being repaired even at the time of severe earthquake.SOLUTION: A plastic hinge structure 1 of an RC columnar structure (RC pier 10) having a plastic hinge part 2 which is installed at the top and/or bottom of an RC columnar structure that receives an axial force such as an RC piers 10 and an RC columns, and bending stress acting on the RC columnar structure (RC pier 10) yields the axial reinforcing bars (axial reinforcement 4) to absorb seismic energy, the plastic hinge structure comprising a pipe body (steel pipe 6) embedded along the central axis in the RC columnar structure (RC pier 10) and extended vertically along the axial direction from the plastic hinge part 2 in order to prevent damage to the core concrete that supports the axial force, and a plurality of pairs of mechanical joints 5 that are provided near the upper and lower ends of the plastic hinge part 2 and connects the axial reinforcing bars (axial reinforcement 4) that bends and yields.SELECTED DRAWING: Figure 2
【課題】大地震時でも崩壊などの脆性破壊を防ぎつつ塑性ヒンジ部の残留歪を低減するとともに、速やかな補修が可能なＲＣ柱状構造物の塑性ヒンジ構造及びＲＣ柱状構造物の塑性ヒンジ部補修方法を提供する。【解決手段】ＲＣ橋脚１０やＲＣ柱などの軸方向力を受けるＲＣ柱状構造物の上部及び／又は下部に設けられ、ＲＣ柱状構造物（ＲＣ橋脚１０）に作用する曲げ応力で軸方向筋（軸方向鉄筋４）が降伏して地震エネルギーを吸収する塑性ヒンジ部２を有するＲＣ柱状構造物（ＲＣ橋脚１０）の塑性ヒンジ構造１において、軸方向力を支えるコアコンクリートの損傷を防ぐために、ＲＣ柱状構造物（ＲＣ橋脚１０）内の中心軸に沿って埋設され、塑性ヒンジ部２より軸方向に沿って長く上下に延設された管体（鋼管６）と、塑性ヒンジ部２の上下端付近に設けられ、曲げ降伏する軸方向筋（軸方向鉄筋４）を接続する複数対の機械式継手５と、を備える。【選択図】図２
PLASTIC HINGE STRUCTURE OF RC COLUMNAR STRUCTURE AND METHOD FOR REPAIRING PLASTIC HINGE PART OF RC COLUMNAR STRUCTURE
To provide a plastic hinge structure of an RC columnar structure and a method for repairing a plastic hinge part of the RC columnar structure capable of reducing the residual strain at the plastic hinge part while preventing brittle failure such as collapse and also immediately being repaired even at the time of severe earthquake.SOLUTION: A plastic hinge structure 1 of an RC columnar structure (RC pier 10) having a plastic hinge part 2 which is installed at the top and/or bottom of an RC columnar structure that receives an axial force such as an RC piers 10 and an RC columns, and bending stress acting on the RC columnar structure (RC pier 10) yields the axial reinforcing bars (axial reinforcement 4) to absorb seismic energy, the plastic hinge structure comprising a pipe body (steel pipe 6) embedded along the central axis in the RC columnar structure (RC pier 10) and extended vertically along the axial direction from the plastic hinge part 2 in order to prevent damage to the core concrete that supports the axial force, and a plurality of pairs of mechanical joints 5 that are provided near the upper and lower ends of the plastic hinge part 2 and connects the axial reinforcing bars (axial reinforcement 4) that bends and yields.SELECTED DRAWING: Figure 2
【課題】大地震時でも崩壊などの脆性破壊を防ぎつつ塑性ヒンジ部の残留歪を低減するとともに、速やかな補修が可能なＲＣ柱状構造物の塑性ヒンジ構造及びＲＣ柱状構造物の塑性ヒンジ部補修方法を提供する。【解決手段】ＲＣ橋脚１０やＲＣ柱などの軸方向力を受けるＲＣ柱状構造物の上部及び／又は下部に設けられ、ＲＣ柱状構造物（ＲＣ橋脚１０）に作用する曲げ応力で軸方向筋（軸方向鉄筋４）が降伏して地震エネルギーを吸収する塑性ヒンジ部２を有するＲＣ柱状構造物（ＲＣ橋脚１０）の塑性ヒンジ構造１において、軸方向力を支えるコアコンクリートの損傷を防ぐために、ＲＣ柱状構造物（ＲＣ橋脚１０）内の中心軸に沿って埋設され、塑性ヒンジ部２より軸方向に沿って長く上下に延設された管体（鋼管６）と、塑性ヒンジ部２の上下端付近に設けられ、曲げ降伏する軸方向筋（軸方向鉄筋４）を接続する複数対の機械式継手５と、を備える。【選択図】図２
PLASTIC HINGE STRUCTURE OF RC COLUMNAR STRUCTURE AND METHOD FOR REPAIRING PLASTIC HINGE PART OF RC COLUMNAR STRUCTURE
ＲＣ柱状構造物の塑性ヒンジ構造及びＲＣ柱状構造物の塑性ヒンジ部補修方法
FUJIKURA SHUICHI (Autor:in) / SHOJI AKIO (Autor:in) / WATASE HIROSHI (Autor:in) / URAKAWA YOSUKE (Autor:in)
21.11.2019
Patent
Elektronische Ressource
Japanisch
| Europäisches Patentamt | 2021
| Online Contents | 2001