OPENING WIDTH SETTING METHOD OF FLOOR STRUCTURE AND FLOOR STRUCTURE

PROBLEM TO BE SOLVED: To provide a method for exactly setting an opening width of a beam in a material axial direction when forming an opening at a floor slab at an edge side of the beam, in a floor structure in which the concrete floor slab is arranged on an upper face of the upper flange of the be...

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Bibliographische Detailangaben
Hauptverfasser: YOSHIDA FUMIHISA, FURUUMI KENJI, NISHI TAKUMA
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method for exactly setting an opening width of a beam in a material axial direction when forming an opening at a floor slab at an edge side of the beam, in a floor structure in which the concrete floor slab is arranged on an upper face of the upper flange of the beam.SOLUTION: In an opening width setting method of a floor structure, a concrete floor slab 2 is arranged on an upper face of an upper flange 11 of an H-shaped steel beam 1, and an opening width Ib of the H-shaped steel beam 1 in a material axial direction when forming an opening 10 at the floor slab 2 is set with respect to the floor structure for constraining the upper flange 11 by the floor slab 2. A lateral buckling slenderness ratioλwith the opening width Ib as a zone is subject to the satisfaction of a numerical expression 1. [Numerical expression 1].SELECTED DRAWING: Figure 1 【課題】梁の上フランジの上面にコンクリートの床スラブが設けられており、この床スラブによって上記上フランジを拘束する床構造について、上記梁の縁側で上記床スラブに開口を形成する場合の上記梁の材軸方向の開口幅を的確に設定する方法を提供する。【解決手段】床構造の開口幅設定方法は、H形鋼梁1の上フランジ11の上面にコンクリートの床スラブ2が設けられており、この床スラブ2によって上記上フランジ11を拘束する床構造について、上記床スラブ2に開口10を形成する場合の上記H形鋼梁1の材軸方向の開口幅lbを設定する方法であって、上記開口幅lbを区間とする横座屈細長比oλbが数1の式を満たすことを条件とする。【数1】【選択図】図1