Analysis of composite hollow RC beam strengthened with mild steel sections

The Advancements in Construction in terms of aesthetics and appeal has led to a need of creating spaces with more compact and convenient designs. There is a hierarchy of load transfer for a building. The changes in weight of any preceding member will change the dimensions of succeeding members in the hierarchy. The reduction in the self-weight of beam due to introduction of a hollow section changes the flexural behaviour and the shear behaviour of the beam and also makes it economical section. There is also the advantage of reduction in the depth of beam giving more floor space to user. This paper focuses on Comparative study of Conventional beam and RC beam strengthened with Mild Steel Pipe Section/Mild Steel Box Section. The Composite Section is obtained by embedding Reinforced Concrete beam with MS Pipe/Box Section in Longitudinal Direction. Load - deflection behaviour of conventional beam and RC beam with MS hollow sections are modelled in ABAQUS Software and their performance studies are conducted with stiffness as parameter. The Hollow RC beam strengthened with MS pipe Section showed more stiffness than the MS box section and conventional beam for 1P, 2P and UD loadings making it the most economical section. (C) 2019 Elsevier Ltd. All rights reserved.