Numerical Study on Steel Reinforced Concrete Beam with Different Amount of Steel Fibres
5 Pages Posted: 3 Sep 2019
Date Written: August 28, 2019
Composite construction is a method of using two or more materials together so as to utilize each material to its best advantage. The most important and frequently encountered combination of construction material is steel and concrete. Steel reinforced concrete (SRC) beam consist of a steel section, embedded inside a reinforced concrete beam. The steel sections in the SRC structures increases load bearing capacity and stiffness. Deformation ability and ductility can also enhance using SRC. These types of composite constructions have been widely used in construction industry. But the intrusion between steel section and reinforcement bar is leading to construction difficulties. The present study aims to use steel fibres in a matrix of steel reinforced concrete structure to improve the load carrying capacity of the structure and to solve the construction difficulties. The numerical results showed that the addition of steel fiber increases the load carrying capacity and deformation ability. The strength of fibre reinforced SRC beam of thinner steel section and normal SRC with thicker section are comparable. Hence restoring to the option of choosing a thinner fibre reinforced SRC section seems to be more economical than increasing the thickness of steel section in normal SRC beam.
Keywords: Steel Reinforced concrete (SRC), Steel fibres, ANSYS
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