RESTRENGTHENING OF RCC BEAM BY BEAM JACKETING

Abstract

The partial damage of structural components cause failure of serviceability and safety requirement of structures and economical losses of owner. Re-strengthening of structures during its life cycle management became major issue for civil engineers. The purpose of this paper is to assess the structural performance and strength behavior for a partially damaged flexural member and also the ultimate load capacity of cracked reinforced concrete beam re-strenghtened by RCC beam jacketing. Structural components taken into consideration are flexural cracked and uncracked reinforced concrete beam. The numerical analysis is conducted by using the finite element software ANSYS to evaluate the behavior of cracked and un-cracked beam under different loading conditions. A further numerical analysis is done for the same beam after restrengthening by ‘beam jacketing’ technique. It is observed that beam jacketing technique reduces the stress at crack tip to a value less than that of uncrack beam stress . It reduces not only the stress at crack tip but also increases the load carrying capacity and stiffness of the beam.