Torsion-Bending-Shear Interaction for Concrete Beams : Closure of discussion

Closure to discussion by Solanki, Pandit and Helmy of paper in J of the Structural Division, ASCE, Vol 100, ST8, August 1974, pp 1657-167

Prestressed concrete columns under long-time loading

Upprättat; 1970; Bibliografisk uppgift: Available at http://retro.seals.ch/digbib/en/view?rid=bse-re-001:1970:5::239 Serie: IABSE Reports of the Working Commissions, International Association for Bridges and Structural Engineering, International Association for Bridges and Structural Engineering,, 5, 0074-1442 Sider: 181-189; 20090214 (elfgren

Torsion-bending-shear interaction for reinforced concrete beams

A rational, simple method is presented for analysis of the torsion-bending-shear interaction at failure for reinforced concrete beams. Equilibrium equations are studied for observed failure mechanisms. Three mechanisms can occur depending on where the concrete compression zone is formed: in the top (mode t), in the bottom (mode b), or in one vertical side (mode s). In modes t and b, the torsion-bending and the shear-bending interaction are governed by second-degree parabolas, whereas the torsion-shear interaction is governed by an ellipse. In mode s, the interaction surface is a cylinder with an elliptic base in the torsion-shear plane.Godkänd; 1974; 20061109 (ysko)</p