Shear Analysis Of Reinforced Concrete Corbel Based On The Strut-And-Tie Model

For the shear capacity of reinforced concrete corbel,a large number of scholars have done a lot of experiments and theory studies,also have put forward and established the model of applicable shear capacity.Due to the discontinuity of the structure of reinforced concrete corbel,the bearing load here is discontinuous.Strut and tie models for the structure of corbel“D”district design is more convenient and effective use of force mechanism of complex.Based on the collection and summarizes the previous experimental study and theoretical analysis in the study of domestic and abroad,this paper carried on further research for the shear capacity of the reinforced concrete corbel through the analysis about previously existing research results.Through the analysis about the previous domestic and foreign study data,this paper collected test data at home and abroad of corbels and the progress and the development of the strut-and-tie model.Using the strut-and-tie model on shear bearing capacity of reinforced concrete corbel in checking,especially to the corbel of shear span ratio 0.3,the experimental analysis and numerical simulation have been carried on and finally compared with the results of theoretical calculation.There will be using of European standard EN1992 and American standard ACI318-11 and domestic current standard << Concrete structure design code >>(GB50010-2010)to solve the shear capacity and compare the three kinds of the theoretical calculation results.It obtains the differences among the calculation results under three different standards to corbel about the shear bearing capacity.The result shows that there is a larger safety factor between the theoretical calculated value base on the United States,Europe code and the current domestic specification to the experimental value.And the results will be used to predict the true value with the relaxation algorithm.American standard and European code will be corrected with the coefficient.This paper also adopted the finite element software ANSYS to simulate the specimen corbel.The model and the SOLID65 element are used to simulate the corbel model.The numerical solution,the theoretical solution and the experimental results are compared each other and the results.And finally it verifies the model's effectiveness,rationality and practicability for the discontinuous structure such as corbel,deep beam.It provides some references for the development of the strut-and-tie model and the analysis of the shear capacity of corbel.