A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
STEEL BEAM WITH FLOOR SLAB AND REINFORCEMENT METHOD THEREOF
To provide a steel beam with floor slab, which can ensure sufficient deformability by restricting a structural out-of-plane deformation of an upper flange of the steel beam due to lateral buckling even when the steel beam is long, and a design method thereof.SOLUTION: A steel beam with floor slab 1 of the present invention has an H-cross-section steel beam 5 whose both ends are rigidly joined with a pillar 3 and a concrete floor slab 13 that is joined through headed studs 11. The steel beam 5 satisfies: 15<λw≤30, A<λy (A is a coefficient to determine the upper limit of slenderness ratio of a weak axis of the steel beam 5 without requiring lateral buckling stiffening when traverse stiffeners are provided at equal interval along the entire length of the steel beam 5). The number of the headed studs 11 is two or more times the number required as a complete synthetic beam in antisymmetric bending moment distribution. Vertical stiffeners 15 joined with the steel beam 5 are disposed along the entire length of the steel beam 5 at the pitch of 0.2 time or less of the beam length so that the distance between the vertical stiffener 15 closest to the pillar 3 and the pillar 3 is 0.125 time or less of the beam length.SELECTED DRAWING: Figure 1
【課題】鉄骨梁は長い場合であっても、横座屈による鉄骨梁の上フランジの構面外変形を拘束して十分な変形能力を確保できる床スラブ付き鉄骨梁およびその設計方法を提供する。【解決手段】本発明に係る床スラブ付き鉄骨梁１は、両端部が柱３に剛接合されたＨ形断面の鉄骨梁５と、頭付きスタッド１１を介して接合されたコンクリート床スラブ１３とを有し、鉄骨梁５は、15＜λw≦30、A＜λy（A:鉄骨梁５の全長にわたって均等間隔で横補剛を設ける場合において、横座屈補剛が不要である鉄骨梁５の弱軸に関する細長比の上限を定める係数）であり、頭付きスタッド１１の本数が、逆対称曲げモーメント分布時に完全合成梁として必要とされる本数の２倍以上であり、鉄骨梁５に接合された縦スチフナ１５が、鉄骨梁５の全長にわたって梁長さの0.2倍以下のピッチで、かつ柱３に最も近い縦スチフナ１５と柱３との距離が梁長さの0.125倍以下となるように設けられている。【選択図】 図１
STEEL BEAM WITH FLOOR SLAB AND REINFORCEMENT METHOD THEREOF
To provide a steel beam with floor slab, which can ensure sufficient deformability by restricting a structural out-of-plane deformation of an upper flange of the steel beam due to lateral buckling even when the steel beam is long, and a design method thereof.SOLUTION: A steel beam with floor slab 1 of the present invention has an H-cross-section steel beam 5 whose both ends are rigidly joined with a pillar 3 and a concrete floor slab 13 that is joined through headed studs 11. The steel beam 5 satisfies: 15<λw≤30, A<λy (A is a coefficient to determine the upper limit of slenderness ratio of a weak axis of the steel beam 5 without requiring lateral buckling stiffening when traverse stiffeners are provided at equal interval along the entire length of the steel beam 5). The number of the headed studs 11 is two or more times the number required as a complete synthetic beam in antisymmetric bending moment distribution. Vertical stiffeners 15 joined with the steel beam 5 are disposed along the entire length of the steel beam 5 at the pitch of 0.2 time or less of the beam length so that the distance between the vertical stiffener 15 closest to the pillar 3 and the pillar 3 is 0.125 time or less of the beam length.SELECTED DRAWING: Figure 1
【課題】鉄骨梁は長い場合であっても、横座屈による鉄骨梁の上フランジの構面外変形を拘束して十分な変形能力を確保できる床スラブ付き鉄骨梁およびその設計方法を提供する。【解決手段】本発明に係る床スラブ付き鉄骨梁１は、両端部が柱３に剛接合されたＨ形断面の鉄骨梁５と、頭付きスタッド１１を介して接合されたコンクリート床スラブ１３とを有し、鉄骨梁５は、15＜λw≦30、A＜λy（A:鉄骨梁５の全長にわたって均等間隔で横補剛を設ける場合において、横座屈補剛が不要である鉄骨梁５の弱軸に関する細長比の上限を定める係数）であり、頭付きスタッド１１の本数が、逆対称曲げモーメント分布時に完全合成梁として必要とされる本数の２倍以上であり、鉄骨梁５に接合された縦スチフナ１５が、鉄骨梁５の全長にわたって梁長さの0.2倍以下のピッチで、かつ柱３に最も近い縦スチフナ１５と柱３との距離が梁長さの0.125倍以下となるように設けられている。【選択図】 図１
STEEL BEAM WITH FLOOR SLAB AND REINFORCEMENT METHOD THEREOF
床スラブ付き鉄骨梁およびその補強方法
UMEDA TOSHIHIRO (author) / YASUDA KYOHEI (author) / UEKI TAKUYA (author) / NANBA TAKAYUKI (author) / MURAKAMI YUKIO (author) / ISHII DAIGO (author) / USHIZAKA SHINYA (author) / KUBOYAMA HIROYUKI (author) / IMAI KATSUHIKO (author)
2021-04-08
Patent
Electronic Resource
Japanese
IPC:
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
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