Title: Bending - An Examination of Assumptions
Author(s): E. F. P. Burnett
Publication: Journal Proceedings
Appears on pages(s): 105-107
Keywords: beams (supports) ; bending; deformation; ductility; failure mechanisms: flexural strength: reinforced concrete; reinforcing steels; shear strength: spans; structural analysis; structural design; tensile strength; ties (reinforcement).
Two series of seven simply supported, mid-span loaded, reinforced concrete, rectangular beams were tested. Within each series the primary variable was span length, the only difference between each series being tie spacing. Experimental results are evaluated in terms of pre-yield response and post-yield strength and inelastic ductility. The interdependent nature of flexure, shear, and strut action is demonstrated, and a criterion for nonflexural behavior is proposed. The influence of shear-span or moment shear ratio, and tie spacing are evaluated with particular emphasis on both pre-and post-yield deformation. Some of the behavioral implications of the use of high-tensile strain hardening reinforcement are discussed.