Numerical Analysis On Shear Behaviors Of RC Beams Reinforced With SMA Bars Using ETS Method

Immediate shear failure of the reinforcement beams could occurs without advanced warning about when it is going to fail.Shear failure could occur when there is insufficient strength between concrete and steel rebar.However,to make sure that the existing reinforcement concrete beams could resist more shear capacity upon increasing load,strengthening method is introduced for the shear strengthening.Moreover,since the shape memory alloy(SMA)has one unique phenomenon called superelasticity,it can be seen that the exploit of this effect could strengthen the reinforcement concrete beams.Shape memory alloys(SMA)are known as the smart materials which could remember it recovery shape upon heating or unloading,and it has special mechanical properties that could return to its initial shape upon unloading condition.Most importantly,limited researches studies focused on SMA on flexural strengthening rather than shear strengthening.Therefore,this whole dissertation is only investigated on strengthening in shear with a new smart material(SMA)with embedded through sections method.Six reinforcement concrete beams models were analyzed.Out of them,two beams are identified as the reference concrete beams and the rest beams are the strengthening with SMA bars.ANSYS APDL(version 18.1)was used to simulate all models.Mid span deflection,shear stress pattern,crack and crush plot will be shown as the result which were collected from the software.Lastly,the effectiveness of strengthening SMA bars will be discussed.