Nonlinear Finite Element Analysis On High-Strength Reinforced Concrete Beam

In this paper, the reinforced concrete structure nonlinear finite element method theory has been studied detailed. According to high-strength reinforced concrete structural mechanics theory characteristic and the thought of finite element method, we have built up reinforced beam analysis model, and have carried out the entire proceeding nonlinearity analysis on the high-strength reinforced concrete beam.According to actual working condition, the Yook-Kong Yong models which one of high-strength concrete restrained constitutive relation model and 5 parametric Willam-Warnke destroyed criterion be adopt in this paper, has built the concrete constitutive relation being suitable to the paper. From the gains strain curve, we can see that after high-strength concrete splits, the pressure area concrete still is in the elasticity stage in pretty long time, this one point is different from common concrete. Using the appropriate amount stirrup in the high-strength concrete reinforced beam, the stirrup can increase the pretty considerable concrete tense, high-strength concrete brittleness also can get very big improvement.According to the reality studying needs of the paper, overall finite element method model, diffusion crack model which be adopt have being used. In the paper the big finite element method software ANSYS has being applied, to carry out the nonlinear analysis on the high-strength reinforced concrete beam. At last, we have a contrast analysis to the corresponding result. The result middle analysis post-processing gains from ANSYS shows the good stress and strain image in perceiving a beam scatters very much. The beam principal stress picture under load effect has provided one new method estimate cracking to destroy location for us, this analyses to reality project have very good practical value. From the result analysis, we can see that the big finite element method software ANSYS has being applied can be applied or used universally to carry out analysis on high-strength reinforced concrete component, result is reliable.