Non-Linear Finite Element Analysis of Steel Plate Retrofitted RC Beam Using ANSYS

Abstract

The objective of this paper is to study the behaviour of retrofitted and non-retrofitted beams and compare the results. The retrofitting material used here is the steel plate, which is attached to the soffit of the beam. A 3-dimensional nonlinear finite element analysis of the beam subjected to single point loading has conducted. Different concrete failure parameters such as shear transfer coefficients, uniaxial tensile and compressive strengths considered. Full-scale models of control beams, as well as retrofitted beams, are shaped and results compared. The first crack load, failure load, crack pattern and load deflection characteristics of the beams modelled and analysed using finite element analysis package compared with the experimental results. The finite element analysis technique in this present study is carried out using ANSYS 15 Package. The various elements employed in ANSYS to model the reinforced concrete beam, as well as the different inputs required, along with the steps to be followed to achieve the results is detailed in this paper. Conclusions have been drawn out by comparing the results of the Control and Strengthened beam. The steel plate retrofitted beam was seen to have enhanced strength and also compared well with the experimental data.
Keywords: Non linear analysis, Finite Element, Steel plate, Retrofitting, Structure, Strengthened beam, Full Beam, Control beam