To suppress the occurrence of fatigue cracking in an H-beam by appropriately reducing stress applied on the H-beam serving as a crane girder.SOLUTION: The reinforcement structure of an H-beam serving as a crane girder for supporting a mobile body on an upper surface is formed such that a reinforcement member is provided to the bottom surface of the H-beam, and slits are formed in the lower flange of the H-beam from the short-direction end of the lower flange toward a web of the H-beam. A plurality of slits are formed so as to sandwich the web of the H-beam along the longitudinal direction of the lower flange of the H-beam.SELECTED DRAWING: Figure 8

    【課題】クレーンガーダーとしてのH形鋼に発生する応力を適切に低減させ、当該H形鋼への疲労亀裂の発生を抑制する。【解決手段】上面で移動体を支持するクレーンガーダーとしてのH形鋼の補強構造であって、前記H形鋼の下面には補強部材が設けられ、前記H形鋼の下フランジには、当該下フランジの短手方向端部から前記H形鋼のウェブに向けてスリットが形成されている。スリットはH形鋼の下フランジの長手方向に沿って、H形鋼のウェブを挟んで、複数形成されている。【選択図】図8


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    Title :

    STEEL MEMBER REINFORCEMENT STRUCTURE AND REINFORCEMENT METHOD


    Additional title:

    鋼部材の補強構造及び補強方法


    Contributors:

    Publication date :

    2020-07-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES / E04G SCAFFOLDING , Baugerüste



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