Buckling of Rectangular Isolated R.C. Columns: Closed-form Approximation for Interaction Domains
| Autor(en): |
Domenico Raffaele
Giuseppina Uva Francesco Porco Andrea Fiore |
|---|---|
| Medium: | Fachartikel |
| Sprache(n): | Englisch |
| Veröffentlicht in: | The Open Construction and Building Technology Journal, Dezember 2013, n. 1, v. 7 |
| Seite(n): | 129-137 |
| DOI: | 10.2174/1874836801307010129 |
| Abstrakt: |
Interaction domains for the buckling of isolated R.C. columns are an efficient and versatile instrument for the assessment of the resistance at Ultimate Limit State, and allow the optimization of the structural geometry and reinforcement ratio. The paper presents the procedure for deriving interaction domains for rectangular symmetrically reinforced columns, providing a detailed analysis of the load-carrying capacity for various classes of concrete and reinforcement steel bars. Domains have been obtained according to themodel-column method, taking into account the uncertainties both in geometry and in the position of axial loads. Effects related to short_term creep are ignored. In order to facilitate the practical utilization, the generic domain has been approximated by a two-branch curve, parabolic and elliptic. The first_one is related to the collapse dominated by axial load, and the second one to flexural crisis. This approximation leads to simple closed-form expressions, particularly suitable for engineering preliminary design. |
| Copyright: | © 2013 Domenico Raffaele, Giuseppina Uva, Francesco Porco, Andrea Fiore |
| Lizenz: | Dieses Werk wurde unter der Creative-Commons-Lizenz Namensnennung 4.0 International (CC-BY 4.0) veröffentlicht und darf unter den Lizenzbedinungen vervielfältigt, verbreitet, öffentlich zugänglich gemacht, sowie abgewandelt und bearbeitet werden. Dabei muss der Urheber bzw. Rechteinhaber genannt und die Lizenzbedingungen eingehalten werden. |
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