EXPERIMENTAL AND NUMERICAL STUDY OF FIBROUS RC CORBELS SUBJECTED TO ECCENTRIC VERTICAL LOADS
Volume Title: ICASGE2025
Paper ID : 1167-ICASGE
Authors
Abstract
This research investigates the torsional resistance of reinforced concrete double corbels and the effect of eccentricity of load and variation of vertical and horizontal stirrups on the structural behavior. An experimental program was conducted where nine reinforced concrete (RC) double corbels containing steel fibers were cast and tested under centric and eccentric static vertical load until failure; the RC corbels had different widths and different percentage of vertical and horizontal stirrups. Experimental results regarding first crack load, ultimate load, displacement, twisting angle and crack pattern are presented and discussed. The experimental results showed that increasing vertical stirrups and horizontal stirrups increased the ultimate torque of the tested specimens between 4.58% to 17.96% while increasing corbel width increased the ultimate torque by 24.32%. Numerical modeling and nonlinear analysis by finite elements were performed for the experimentally tested specimens using ANSYS v.18 commercial software. Agreement between the numerical and experimental results regarding load-displacement response, crack patterns, failure loads and failure modes demonstrates the validity and efficiency of the adopted numerical model. Further, a parametric study was carried out using the validated model to investigate the effect of the concrete compressive strength, diameter of the vertical stirrups, diameter of the horizontal stirrups, diameter of the main steel, eccentric, the yield strength of the vertical stirrups and the yield strength of the horizontal stirrups.
Keywords
Subjects