Application of the component method to column bases

✍ Scribed by J.P. Jaspart; D. Vandegans

• Book ID: 104290084
• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 457 KB
• Volume: 48
• Category: Article
• ISSN: 0143-974X
• DOI: 10.1016/s0143-974x(98)90196-1

✦ Synopsis

Column bases transfer reactions from the structure to the foundation. When subjected to normal forces, shear forces and in-plane bending moments, they deform, particularly in rotation. This rotational behaviour is usually idealized as pinned or fully rigid. But in most of the cases column bases have a high semi-rigid behaviour which influences significantly the global frame response. In this paper, a mechanical model to predict their moment-rotation response is presented. To achieve this goal, the component method described in Annex J of Eurocode 3 is used and extended. According to the component method, any structural joint is considered as a set of individual components and the determination of its mechanical properties as strength and rotational stiffness includes three main steps: (i) definition of the constitutive components, (ii) evaluation of their mechanical properties and (iii) assembly of the components to derive the joint properties. Lastly, comparisons of the mechanical model with experimental laboratory tests on column bases are performed.