Research at structural concrete laboratory

Shear strength of reinforced concrete beams

Although the topic of shear strength in reinforced concrete beams has been treated for a long time by several research bodies, the calculation models available to practicing engineers do not allow to calculate precisely the shear strength of a given beam.
The research performed by the Structural Concrete Laboratory have shown that the uncertainties in the shear strength are related to the distribution of the shear on the depth of the section, the ability of the tension and compression chords to carry a part of the shear force and the effect of a simultaneous contribution of a transverse bending. These effects are currently being investigated experimentally and analytically.

Reference publications

  • Rupf, M., Fernández Ruiz M., Muttoni A., Post-tensioned girders with low amounts of shear reinforcement: Shear strength and influence of flanges, doi 10.1016/j.engstruct.2013.05.024, 2013, Engineering Structures, 15 p.
  • Fernández Ruiz M., Muttoni A., Shear strength of thin-webbed post-tensioned beams, ACI Structural Journal, V. 105 No 3, USA, 2008, pp. 308-317.
  • Muttoni A., Burdet O., Hars E., Effect of Duct Type on the Shear Strength of Thin Webs, ACI Structural Journal, Farmington Hills, USA, 2006, pp. 729-735.
  • Campana S., Fernández Ruiz M., Anastasi A., Muttoni A., Analysis of shear-transfer actions on one-way RC members based on measured cracking pattern and failure kinematics, Magazine of Concrete Research, 19 p., UK, 2013.