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Reinforced concrete shear has been a century of history , especially since the mid-20th century , scholars around the world a lot of tests and theoretical analysis . But because of the complex components by state , and many factors related to the structure of shear and interaction , so far at home and abroad has not yet formed a generally accepted shear mechanical model and unified formula . This article describes at home and abroad on the shear strength analysis of four methods : truss theory , limit equilibrium theory , statistical analysis , non-linear finite element analysis , focusing on the European and American norms adopted the truss theory and the present study the broader non- linear finite element analysis . In the study on the basis of the oblique section failure mechanism , the proposed the Shear Reinforcement formula . In order to verify the correctness of the formula , the 12 - beam shear reinforcement, after analyzing the test results , verify the correctness of the formula , and fixes the parameters in the formula . Reinforced concrete nonlinear finite element analysis method can accurately analyze the whole process , including reinforced concrete beam flexure and shear stress distribution , the emergence and development of deformation, cracks , broken ring shape and ultimate bearing capacity . Established finite element model can simulate the whole process of reinforced concrete beams bending shear failure . The model is applied to the numerical analysis of reinforced concrete beams , which is calculated in good agreement with the experimental results , the use of the finite element model can solve a number of special problems in the shear reinforcement .
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