Finite element analysis of shear performance of steel fiber recycled concrete beam
To study the shear performance of steel fiber reinforced recycled concrete beams,the recycled concrete beam is analyzed using nonlinear finite element analysis in Abaqus software.The analysis result is compared with the experiment result,and the reliability of the model is verified.By changing the parameters such as shear-span ratio,reinforcement ratio,steel fiber volume fraction,and CFRP reinforcement mode,the shear performance changes of recycled concrete beams under monotonic loading and unidirectional repeated loading is studied.The results show that:the shear bearing capacity and deformation capacity of the specimen under unidirectional repeated loading are both reduced compared to those under monotonic loading,and the brittle characteristics of the beam are more significant;increasing the reinforcement ratio,increasing the volume fraction of steel fibers,or using CFRP reinforcement can effectively improve the shear performance of the beam,and the improvement effect on the shear performance of the specimen under repeated loading is better;the shear-span ratio is an important influencing factor on the shear performance of steel fiber reinforced recycled concrete beams.The shear bearing capacity of the specimens decreases with the increase of the shear-span ratio,and its deformation ability increases.
recycled concretebeamshear performancesteel fiberCFRPfinite element
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