Analysis of RC Deep Beams Considering the Shear Deformations and Bar-concrete Interaction

Authors

  • Seyed Shaker Hashemi
    Affiliation

    Department of Civil Engineering, Persian Gulf University, Shahid Mahini Street, 75169-13817 Bushehr, Iran

  • Kabir Sadeghi
    Affiliation

    Department of Civil Engineering, Near East University, ZIP Code: 99138, Lefkosa, TRNC, Mersin 10, Turkey

  • Saeid Javidi
    Affiliation

    Department of Civil Engineering, Persian Gulf University, Shahid Mahini Street, 75169-13817 Bushehr, Iran

  • Mahmoud Malakouti
    Affiliation

    Department of Civil Engineering, Persian Gulf University, Shahid Mahini Street, 75169-13817 Bushehr, Iran

https://doi.org/10.3311/PPci.16192

Abstract

In this paper, reinforced concrete (RC) deep beams (DBs) have been analyzed numerically and a new approach is proposed to the nonlinear numerical modeling of such structural members. The effect of shear deformations and the interaction between reinforcing steel bar and concrete are considered in modeling and analysis. In order to consider the effect of shear deformations, the Timoshenko beam theory has been applied to formulate the analysis method. In the modeling, the RC DB is divided into several sub-elements which are composed of concrete and reinforcing steel bars. Individual degrees of freedom have been assigned to each reinforcing steel bar. Thus, each reinforcing steel bar is able to slip relative to its surrounding concrete and the bond effect is simulated by nonlinear springs. To consider the interaction between reinforcing steel bar and concrete, the concrete segment acts as a beam element, and each reinforcing steel bar acts as a truss element. The reliability of this method has been confirmed by comparing the obtained results from the numerical analysis and the results of the experimental pushover test.

Keywords:

nonlinear analysis, Timoshenko beam theory, reinforcing steel bar-concrete interaction, shear deformation, reinforced concrete deep beam

Published Online

2020-10-14

How to Cite

Hashemi, S. S., Sadeghi, K., Javidi, S., Malakouti, M. “Analysis of RC Deep Beams Considering the Shear Deformations and Bar-concrete Interaction”, Periodica Polytechnica Civil Engineering, 65(1), pp. 99–108, 2021. https://doi.org/10.3311/PPci.16192

Issue

Section

Research Article