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TESTS ON CONCRETE BEAMS IN BIAXIAL BENDING, AXIAL COMPRESSION AND TORSION

Abhishek Sharma, G S Pandit

Abstract

Tests on 91 reinforced concrete model beams of rectangular cross-section in combined torsion, biaxial bending moment and axial compression are reported. The specimens were subjected to assigned biaxial bending couples and axial compression before being twisted to failure. The effect of combined loading on torsional behaviour, ultimate strength and torque-twist characteristics has been examined. The tests showed that in the case of symmetrically reinforced beams biaxial bending couples tend to reduce torsional strength and stiffness; axial compression tends to increase torisonal strength and stiffness. (Author/TRRL)

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Key concepts: Torsion (gastropod), Materials science, Structural engineering, Stiffness, Compression (physics), Torque, Bending, Pure bending