The objective of the present paper is to identify experimentally and theoretically differing failure mechanisms in reinforced concrete beams subjected to four-point bending for a separate variation of the depth and length at the constant thickness. Experiments were performed on reinforced concrete beams under four-point bending. Different failure mechanisms included steel yielding, diagonal tension or shear- compression depending upon the ratio of the shear to the beam depth a/D. The shear strength of beams evidently decreased with increasing a/D-ratio. The experimental results were numerically simulated using two-dimensional finite element analyses under plane stress conditions, based on a coupled elasto-plastic- damage constitutive model for concrete that was enhanced by non-locality in the softening regime. The numerical calculation results satisfactorily captured both the experimental shear strength and failure mechanisms.
Authors
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1201/9781315182964-78
- Category
- Aktywność konferencyjna
- Type
- materiały konferencyjne indeksowane w Web of Science
- Language
- angielski
- Publication year
- 2018
