Concrete and Earthquake Engineering Research Group

Department of Civil & Structural Engineering

Dr Kamaran Ismail

PhD Student


Department of Civil and Structural Engineering
Sir Frederick Mappin Building
Mappin Street,
S1 3JD


Kamaran completed his BSc and MSc in civil engineering in Salahaddin University-Erbil in Iraq. He worked as a cite engineer for three years then joined the department of civil engineering at Salahaddin University-Erbil and started working as an assistant lecturer. From December 2011 he is a PhD student in Concrete and Earthquake Engineering Research Group at the University of Sheffield.

Recent activities and achievements

Project title: Shear Behaviour of RC Deep Beams


  • Review the current state-of-the art on the behaviour of RC beams subjected to shear forces and evaluate existing shear models and summarize their advantages and drawbacks.
  • Experimentally and numerically investigating the effect of different design parameters on the behaviour of RC deep beams.
  • Proposing a reliable model that can be used to predict the capacity of RC deep beams.

Tasks and methodology: Although much work has been done on the shear behaviour of reinforced concrete beams in the past decades, the mechanism of shear resistance is still not adequately understood. The lack of understanding has resulted in the development of design rules that are overall conservative and can become highly uneconomic, especially for deep beams. However it has also been reported that current provisions my lead, in some cases, to unsafe design solutions. Most current design codes of practice for concrete structures do not predict the shear capacity of RC deep beams accurately and their provisions mainly rely on experimental results of reduced scale concrete beams rather than a sound theoretical approach. Thus, more sophisticated methods should be investigated. The aim of the present study is to develop an understanding of the behaviour and shear capacity of RC deep beams. A methodology using a complementary set of theoretical and experimental approaches is employed to develop more reliable models to describe the shear behaviour of RC deep beams and propose improved design equations.

Expected results: 

  • Experimental programme provides key information about the behaviour of RC deep beams and influencing factors.
  • Finite element model with reliable concrete constitutive relationship can be used as a platform to simulate the behaviour of RC deep beams.
  • Experimental results combined with numerical analysis help to develop an accurate effectiveness factor model that can be used in strut-and-tie mode for design purposes. 

Supervisor: Dr Maurizio Guadagnini