Slenderness of Columns in Braced Frames
| Autor: | Richard W. Furlong |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Physics
business.industry Mechanical Engineering Bent molecular geometry Magnification Flexural rigidity Building and Construction Structural engineering Curvature Buckling Mechanics of Materials General Materials Science Mathematics::Differential Geometry business Astrophysics::Galaxy Astrophysics Civil and Structural Engineering |
| Zdroj: | Journal of Structural Engineering. 119:3405-3415 |
| ISSN: | 1943-541X 0733-9445 |
| DOI: | 10.1061/(asce)0733-9445(1993)119:11(3405) |
| Popis: | Moment-magnification factors for columns in braced frames are dependent upon column slenderness and the flexural stiffness of restraining beams. A column bent in single curvature has a flexural stiffness that can be as little as one-third that of the same column bent in reverse curvature. Column slenderness ratios (\IL\N/\IR\N) above which reverse curvature moments must be magnified are significantly higher than those for which single-curvature moments would require magnification. This paper shows that when loading conditions are considered together with framing restraints, magnified moments from the single-curvature condition rarely generate moment values as high as moments unmagnified from the reverse-curvature loading condition. Thus, without need for moment magnification, column slenderness ratios can be significantly higher than the limit ratios traditionally derived for single-curvature bending conditions of columns. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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