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Dimensionnement d'une section en béton armé soumise à une enveloppe elliptique de sollicitations dynamiques combinées
Wind or earthquake dynamic actions produce combined efforts on structures (axial force, bending moment about one or two axes…) whose maximum values within a member section can often be represented by an elliptical envelope. The present paper describes a technique to optimize reinforced concrete sections subjected to this type of dynamic load by adjusting quantities of steel and/or concrete so that the interaction curves characterizing the resistance of the sections become tangent to the envelope of maximum combined forces. The method relies on a geometrical transformation from the original space of forces in which the envelope is an ellipse to a so-called « standard space » where it becomes the unit circle. In this latter space, the safety margin of the section has a very simple geometric expression and is measurable with well-known tools of reliability analysis. The section parameters (steel and concrete) can thus be adjusted in a efficient way.
Dimensionnement d'une section en béton armé soumise à une enveloppe elliptique de sollicitations dynamiques combinées
Wind or earthquake dynamic actions produce combined efforts on structures (axial force, bending moment about one or two axes…) whose maximum values within a member section can often be represented by an elliptical envelope. The present paper describes a technique to optimize reinforced concrete sections subjected to this type of dynamic load by adjusting quantities of steel and/or concrete so that the interaction curves characterizing the resistance of the sections become tangent to the envelope of maximum combined forces. The method relies on a geometrical transformation from the original space of forces in which the envelope is an ellipse to a so-called « standard space » where it becomes the unit circle. In this latter space, the safety margin of the section has a very simple geometric expression and is measurable with well-known tools of reliability analysis. The section parameters (steel and concrete) can thus be adjusted in a efficient way.
Dimensionnement d'une section en béton armé soumise à une enveloppe elliptique de sollicitations dynamiques combinées
Kahan, Michel (author)
Revue Française de Génie Civil ; 6 ; 1283-1308
2002-01-01
26 pages
Article (Journal)
Electronic Resource
Unknown
Abaques pour le dimensionnement des section en béton armé
| TIBKAT | 1977
Modélisation non-linéaire du comportement du béton sous des sollicitations dynamiques
| UB Braunschweig | 1987
Modélisation non-linéaire du comportement du béton sous des sollicitations dynamiques
| UB Braunschweig | 1987