Title: Framework for Quantification of Shear-Transfer Mechanisms from Deep Beam Experiments

Author(s): Dhanushka K. Palipana, Alexandru N. Trandafir, Boyan I. Mihaylov, and Giorgio T. Proestos

Publication: Structural Journal

Volume: 119

Issue: 3

Appears on pages(s): 53-65

Keywords: aggregate interlock; assessment; cracks; deep beams; reinforced concrete; shear

DOI: 10.14359/51734485

Date: 5/1/2022

Abstract:
This paper presents a method to quantify shear-transfer mechanisms from large-scale reinforced concrete deep beam experiments. The framework uses the Two-Parameter Kinematic Theory in conjunction with basic constitutive relationships to backcalculate the shear-carrying mechanisms in deep beams using only detailed experimental data and member properties. The input to the method is the experimentally obtained displacement field data and critical crack information, including crack widths, crack slips, and member properties; the output of the method is the applied load on the member. The framework is applied to five previously conducted large-scale deep-beam experiments and the assessed loads are compared to the measured applied loads. The results indicate that experimental data including detailed crack geometry, crack widths, and slips can be used to assess the applied load on deep beams. The framework provides a foundation upon which direct crack-based assessment methods can be further developed.