Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Flexural-torsional deformations of imperfect thin-walled columns with discrete bracing
Abstract Columns with initial crookedness and twist are analyzed. A discrete elastic restraint resists bending and twisting as the compressive load is increased. The thin-walled columns are linearly elastic, and deformations are small. Numerical results are presented for two examples of pinned columns with half-sine initial imperfection shapes. The first is a singly symmetric Cee section with torsional bracing. Flexural-torsional coupling occurs between the twist and bending in the strong direction. The second is a doubly symmetric I section with lateral bracing on one flange. Flexural-torsional deformation in this case involves twist and bending in the weak direction. The effects of axial load, bracing location and stiffness, and relative orientations of the imperfections are investigated. Also, the stiffness required to restrict the twist to be a certain proportion of the initial twist is determined, which is useful for designing bracing.
Highlights Flexural-torsional deformations of columns are analyzed. Discrete translational and rotation bracing is at an arbitrary location. The columns have initial imperfections in deflections and twist. Thin-walled beams with Cee and I cross sections are considered. Effects of axial load and of bracing location and stiffness are determined.
Flexural-torsional deformations of imperfect thin-walled columns with discrete bracing
Abstract Columns with initial crookedness and twist are analyzed. A discrete elastic restraint resists bending and twisting as the compressive load is increased. The thin-walled columns are linearly elastic, and deformations are small. Numerical results are presented for two examples of pinned columns with half-sine initial imperfection shapes. The first is a singly symmetric Cee section with torsional bracing. Flexural-torsional coupling occurs between the twist and bending in the strong direction. The second is a doubly symmetric I section with lateral bracing on one flange. Flexural-torsional deformation in this case involves twist and bending in the weak direction. The effects of axial load, bracing location and stiffness, and relative orientations of the imperfections are investigated. Also, the stiffness required to restrict the twist to be a certain proportion of the initial twist is determined, which is useful for designing bracing.
Highlights Flexural-torsional deformations of columns are analyzed. Discrete translational and rotation bracing is at an arbitrary location. The columns have initial imperfections in deflections and twist. Thin-walled beams with Cee and I cross sections are considered. Effects of axial load and of bracing location and stiffness are determined.
Flexural-torsional deformations of imperfect thin-walled columns with discrete bracing
Plaut, Raymond H. (Autor:in) / Moen, Cristopher D. (Autor:in)
Thin-Walled Structures ; 154
13.05.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Online Contents | 1999
Local, Distortional, Flexural and Flexural-Torsional Buckling of Thin-Walled Columns
| British Library Conference Proceedings | 1999
Torsional Bracing of Columns and Beam-Columns
| British Library Conference Proceedings | 1999