Title:
Discontinuity of the Strength in Bending and Shear of
Reinforced Beams
Author(s):
Milik Tichy
Publication:
Journal Proceedings
Volume:
67
Issue:
3
Appears on pages(s):
249-252
Keywords:
beams (supports) ; bending; cracking (fracturing) ; flexural strength; reinforced concrete; shear properties; shear strength; stirrups; ultimate strength.
DOI:
10.14359/7267
Date:
3/1/1970
Abstract:
Papers analyzing the ultimate strength of beams subject to bending and shear treat the shear reinforcement as a continuous entity. However, the shear reinforcement is discrete which has an influence on the ultimate behavior of the beam. Assuming a model of the shear-bending strength, it can be shown that the inclination of the shear crack and also the spacing of shear reinforcement are important factors. The inclination of shear crack is a random variable which is only partially dependent on conditions at ultimate load. The analysis of a set of "computer beams" has shown interesting discontinuities of the ratio Mus/Mu (where Mus is the ultimate moment at shear-bending failure and Mu is the ultimate moment at pure bending) when plotted towards the shear span ratio M/Vd1.