FLEXURAL-TORSIONAL INSTABILITY OF REINFORCED OR PRESTRESSED CONCRETE POSTS AND BEAMS

INSTABILITE EN FLEXION-TORSION DES POTEAUX ET POUTRES EN BETON ARME OU PRECONTRAINT

THE PROBLEMS CONCERNING THE INSTABILITY OF BEAMS OR POSTS IN COMBINED BENDING AND TORSION WERE APPROACHED THEORETICALLY AND EXPERIMENTALLY DURING PREVIOUS INVESTIGATIONS. IT IS PROPOSED TO DEVELOP A FINAL CALCULATION METHOD AND TO APPLY IT TO THE COMPUTATION OF THE CRITICAL MOMENT OF REINFORCED OR PRESTRESSED CONCRETE BEAMS TAKING INTO ACCOUNT THE REAL BEHAVIOUR OF THE MATERIALS.