A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
STEEL BEAM AND COLUMN-BEAM JOINT STRUCTURE
PROBLEM TO BE SOLVED: To provide a steel beam and a column-beam joint structure that prevent buckling of a web when exposed to horizontal external force caused by an earthquake, etc.SOLUTION: A steel beam 1 has an H-shaped cross-section with a flange 2 made of a steel material with yield strength higher than the material of a web 3, and is stiffened at an end portion. A plurality of longitudinal stiffening members 6 is disposed on the web 3 at the end portion, orthogonally to an axial direction of the beam, and at a prescribed interval in the axial direction. As such, the stiffening members 6 stiffen the end portion of the beam so as to restrict out-of-plane deformation of the web 3 at the end portion of the beam. The configuration suppresses buckling of the web accompanied by rapid decline in load resistant capacity of the member, caused by local buckling of the flange 2 at the end portion of the beam on a flexural compression side.SELECTED DRAWING: Figure 1
【課題】地震等により作用する水平外力に対して、ウェブのクリッピング破壊を抑制できる鉄骨梁および柱梁接合構造を提供する。【解決手段】ウェブ３に対してフランジ２の降伏応力度が高い鋼材からなるＨ形断面の梁の梁端部が補剛された鉄骨梁１であって、梁端部のウェブ３に、梁の軸方向と直交し、かつ当該軸方向に所定間隔で配置された複数の縦補剛部材６が設けられているので、これら縦補剛部材６が梁端部のウェブ３に生じる面外変形を拘束するように補剛する。これによって、曲げ圧縮側の梁端部のフランジ２の局部座屈による部材の急激な耐力低下を伴うウェブのクリッピング破壊を抑制できる。【選択図】図１
STEEL BEAM AND COLUMN-BEAM JOINT STRUCTURE
PROBLEM TO BE SOLVED: To provide a steel beam and a column-beam joint structure that prevent buckling of a web when exposed to horizontal external force caused by an earthquake, etc.SOLUTION: A steel beam 1 has an H-shaped cross-section with a flange 2 made of a steel material with yield strength higher than the material of a web 3, and is stiffened at an end portion. A plurality of longitudinal stiffening members 6 is disposed on the web 3 at the end portion, orthogonally to an axial direction of the beam, and at a prescribed interval in the axial direction. As such, the stiffening members 6 stiffen the end portion of the beam so as to restrict out-of-plane deformation of the web 3 at the end portion of the beam. The configuration suppresses buckling of the web accompanied by rapid decline in load resistant capacity of the member, caused by local buckling of the flange 2 at the end portion of the beam on a flexural compression side.SELECTED DRAWING: Figure 1
【課題】地震等により作用する水平外力に対して、ウェブのクリッピング破壊を抑制できる鉄骨梁および柱梁接合構造を提供する。【解決手段】ウェブ３に対してフランジ２の降伏応力度が高い鋼材からなるＨ形断面の梁の梁端部が補剛された鉄骨梁１であって、梁端部のウェブ３に、梁の軸方向と直交し、かつ当該軸方向に所定間隔で配置された複数の縦補剛部材６が設けられているので、これら縦補剛部材６が梁端部のウェブ３に生じる面外変形を拘束するように補剛する。これによって、曲げ圧縮側の梁端部のフランジ２の局部座屈による部材の急激な耐力低下を伴うウェブのクリッピング破壊を抑制できる。【選択図】図１
STEEL BEAM AND COLUMN-BEAM JOINT STRUCTURE
鉄骨梁および柱梁接合構造
ITO HIROSHI (author) / KITAOKA SATOSHI (author) / KIMURA KEI (author) / SUZUKI TAKAHIKO (author) / ANDO KENSUKE (author) / KIMURA SEIYA (author)
2017-09-21
Patent
Electronic Resource
Japanese
STEEL BEAM AND COLUMN-BEAM JOINT STRUCTURE USING STEEL BEAM
| European Patent Office | 2019