| Residential College | false |
| Status | 已發表Published |
| Design of cold-formed steel elliptical hollow section members under combined compression and biaxial bending | |
Wai-Meng QUACH 
| |
| 2024-06-05 | |
| Size of Audience | more than 50 |
| Type of Speaker | Conference speaker |
| Abstract | The present study investigated the global instability of cold-formed (CF) steel elliptical hollow section (EHS) members under combined compression and biaxial bending by using the numerical method. A finite element (FE) model for CF tubular members under combined compression and biaxial bending was first developed, in which the strength enhancement, geometric imperfection and residual stresses due to roll-forming were incorporated. The FE model was validated against the existing test results. The validated FE model was employed to carry out a parametric study for CF steel EHS members, which covers an extensive range of cross-section geometries, material grades (with steel grades up to 960 MPa), member slenderness, loading eccentricities and loading angles. Based on the generated FE data, the application of the current interaction design formulae for steel members under combined loading in EN 1993-1-1, together with the codified slenderness limits for circular hollow section (CHS) under combined loading, were assessed for the design of CF steel EHS members under combined compression and biaxial bending. It can be found that the design formulae in EN 1993-1-1, together with the slenderness limits for CHS, can give very conservative predictions for CF steel EHS members under combined loading. In addition, a new slenderness limit for CF steel EHS under combined loading was proposed. By adopting the new slenderness limit for CF steel EHS under combined loading, the design formulae in EN 1993-1-1 were assessed again for CF steel EHS members under combined loading, which can provide accurate and reliable predictions. |
| Source Publication | The 10th International Conference on Steel and Aluminium Structures (ICSAS24), Rio de Janeiro, Brazil, 5-7 June 2024 |
| Conference Date | 5-7 June 2024 |
| Conference Place | Rio de Janeiro, Brazil |
| Language | 英語English |
| Document Type | Presentation |
| Collection | DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING |
| Corresponding Author | Wai-Meng QUACH |
| Affiliation | University of Macau, Macau, China |
| First Author Affilication | University of Macau |
| Recommended Citation GB/T 7714 | Wai-Meng QUACH. Design of cold-formed steel elliptical hollow section members under combined compression and biaxial bending[Z]. The 10th International Conference on Steel and Aluminium Structures (ICSAS24), Rio de Janeiro, Brazil, 5-7 June 2024, 5-7 June 2024. |
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