A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
GIRDER STRUCTURE
To provide a girder structure having a notch portion in the height direction at the end portion which prevents the occurrence of fatigue crack so as to elongate the fatigue life.SOLUTION: According to an aspect of the present invention, a girder structure 10 is provide in which a notch portion 13 is formed in the height direction at an end portion 12. The girder structure 10 is provided with a web 151 which is cut in a shape of the notch portion 13, a lower flange 153 joined to the lower end of the web 151, a plurality of ribs 155 which is connected to each of the web 151 and the lower flange 153 and arranged in the notch portion 13. The notch portion 13 is composed of a first concave curved portion 131 located on the side of the end portion 12, and a second convex curved portion 132 located on the side of an intermediate part 11 of the girder structure 10.SELECTED DRAWING: Figure 1
【課題】端部に高さ方向の切り欠き部が形成される桁構造体において、疲労亀裂の発生を防止して疲労寿命を延伸する。【解決手段】本発明のある観点によれば、端部１２に高さ方向の切り欠き部１３が形成される桁構造体１０が提供される。桁構造体１０は、切り欠き部１３の形状に切り取られるウェブ１５１と、ウェブ１５１の下端に接合される下部フランジ１５３と、ウェブ１５１および下部フランジ１５３にそれぞれ接合され切り欠き部１３に配置される複数のリブ１５５とを備え、切り欠き部１３は、端部１２側に位置する凹状の第１湾曲部１３１と、桁構造体１０の中間部１１側に位置する凸状の第２湾曲部１３２とによって形成される。【選択図】図１
GIRDER STRUCTURE
To provide a girder structure having a notch portion in the height direction at the end portion which prevents the occurrence of fatigue crack so as to elongate the fatigue life.SOLUTION: According to an aspect of the present invention, a girder structure 10 is provide in which a notch portion 13 is formed in the height direction at an end portion 12. The girder structure 10 is provided with a web 151 which is cut in a shape of the notch portion 13, a lower flange 153 joined to the lower end of the web 151, a plurality of ribs 155 which is connected to each of the web 151 and the lower flange 153 and arranged in the notch portion 13. The notch portion 13 is composed of a first concave curved portion 131 located on the side of the end portion 12, and a second convex curved portion 132 located on the side of an intermediate part 11 of the girder structure 10.SELECTED DRAWING: Figure 1
【課題】端部に高さ方向の切り欠き部が形成される桁構造体において、疲労亀裂の発生を防止して疲労寿命を延伸する。【解決手段】本発明のある観点によれば、端部１２に高さ方向の切り欠き部１３が形成される桁構造体１０が提供される。桁構造体１０は、切り欠き部１３の形状に切り取られるウェブ１５１と、ウェブ１５１の下端に接合される下部フランジ１５３と、ウェブ１５１および下部フランジ１５３にそれぞれ接合され切り欠き部１３に配置される複数のリブ１５５とを備え、切り欠き部１３は、端部１２側に位置する凹状の第１湾曲部１３１と、桁構造体１０の中間部１１側に位置する凸状の第２湾曲部１３２とによって形成される。【選択図】図１
GIRDER STRUCTURE
桁構造体
NISHIMURA KOTA (author) / OZAKI TERUTAKA (author) / MORIMOTO HIDEHARU (author) / MORIMOTO MASASHI (author) / MATSUISHI NAGAYUKI (author)
2019-07-25
Patent
Electronic Resource
Japanese