Experimental Study on Arduino-Based Intelligent Damage Repair in Reinforced Concrete Beams with SMA Wires
This study presents an intelligent damage repair control system that is developed based on Arduino(an open-source electronics platform)and shape memory alloy(SMA)wires,which is specialized in repairing the damages of reinforced concrete(RC)beams caused by material aging and cracking.Intelligent repair control devices,consisting of the input,process and output modules,are designed following the deflection and crack control principles of the intelligent control system.When oversized reinforcement strains(exceeding the limits)are detected,the output modules will raise the temperature of SMA wires to repair the beam body.A control beam(beam A without repair device)and a test beam(beam B with smart repair device)were prepared to verify the damage repair performance of the intelligent repair control device.During the test,beam B were repaired for three times,and beam A and beam B were compared from perspectives of midspan deflection,reinforcement strain and crack widths.It is shown that the midspan deflection and crack widths of beam B are less than those of beam A,and during the three times of repairs,the maximum recoverability of the midspan deflection,crack widths and reinforcement strain are 31.0％,47.0％and 71.5％,respectively,indicating that the intelligent repair control device is capable of monitoring the damage conditions of the test beam and activate the SMA material to repair the damages to achieve the intelligent repair of the RC beam.
reinforced concrete beamshape memory alloyintelligent repair control systemrecoverabilitymidspan deflectionreinforcement strainmodel test
万方数据
维普
