A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
RESIDUAL STRAIN RESTRAINT STRUCTURE OF RC COLUMNAR STRUCTURE AND PLASTIC HINGE PART REPAIR METHOD OF RC COLUMNAR STRUCTURE
To provide a residual strain restraint structure of an RC columnar structure which eliminates as much as possible residual strain of plastic hinge parts while preventing brittle failures such as collapses even in the event of a large earthquake, and can be swiftly repaired and reused.SOLUTION: In a residual strain restraint structure 1 of an RC columnar structure (RC pier 10) which is provided at an upper part and/or a lower part of the RC columnar structure that receives axial direction forces such as RC piers 10 and RC columns and has a plastic hinge part 2 whose axial direction reinforcement (axial reinforcement 4) yields due to bending stress acting on the RC columnar structure (RC pier 10) and which absorbs seismic energy, a core concrete protective material (superelastic alloy bar material 7) made of superelastic alloy extending vertically along an axial direction from the plastic hinge part 2 so as to surround core concrete 6 is provided to prevent damages to the core concrete 6 around a central axis of the RC columnar structure (RC pier 10).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極力なくして、速やかに補修して使用可能なＲＣ柱状構造物の残留歪抑制構造を提供する。【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）の残留歪抑制構造１において、ＲＣ柱状構造物（ＲＣ橋脚１０）の中心軸の周囲のコアコンクリート６の損傷を防ぐために、コアコンクリート６を囲うように塑性ヒンジ部２より軸方向に沿って長く上下に延設された超弾性合金からなるコアコンクリート保護材（超弾性合金棒材７）を備える。【選択図】図２
RESIDUAL STRAIN RESTRAINT STRUCTURE OF RC COLUMNAR STRUCTURE AND PLASTIC HINGE PART REPAIR METHOD OF RC COLUMNAR STRUCTURE
To provide a residual strain restraint structure of an RC columnar structure which eliminates as much as possible residual strain of plastic hinge parts while preventing brittle failures such as collapses even in the event of a large earthquake, and can be swiftly repaired and reused.SOLUTION: In a residual strain restraint structure 1 of an RC columnar structure (RC pier 10) which is provided at an upper part and/or a lower part of the RC columnar structure that receives axial direction forces such as RC piers 10 and RC columns and has a plastic hinge part 2 whose axial direction reinforcement (axial reinforcement 4) yields due to bending stress acting on the RC columnar structure (RC pier 10) and which absorbs seismic energy, a core concrete protective material (superelastic alloy bar material 7) made of superelastic alloy extending vertically along an axial direction from the plastic hinge part 2 so as to surround core concrete 6 is provided to prevent damages to the core concrete 6 around a central axis of the RC columnar structure (RC pier 10).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極力なくして、速やかに補修して使用可能なＲＣ柱状構造物の残留歪抑制構造を提供する。【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）の残留歪抑制構造１において、ＲＣ柱状構造物（ＲＣ橋脚１０）の中心軸の周囲のコアコンクリート６の損傷を防ぐために、コアコンクリート６を囲うように塑性ヒンジ部２より軸方向に沿って長く上下に延設された超弾性合金からなるコアコンクリート保護材（超弾性合金棒材７）を備える。【選択図】図２
RESIDUAL STRAIN RESTRAINT STRUCTURE OF RC COLUMNAR STRUCTURE AND PLASTIC HINGE PART REPAIR METHOD OF RC COLUMNAR STRUCTURE
ＲＣ柱状構造物の残留歪抑制構造及びＲＣ柱状構造物の塑性ヒンジ部補修方法
FUJIKURA SHUICHI (author) / SHOJI AKIO (author) / WATASE HIROSHI (author) / URAKAWA YOSUKE (author) / KISE SUMIO (author)
2021-11-18
Patent
Electronic Resource
Japanese
| European Patent Office | 2019
COLUMNAR STRUCTURE, AND CONSTRUCTION METHOD FOR THE COLUMNAR STRUCTURE
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