High Strength Reinforced Concrete Pier Seismic Performance Computer Simulation Analysis

A large number of earthquake damage and experimental studies show that a strong earthquake will generally make the structure enter the plastic state,so elastic and plastic deformation occurs, deformation of reinforced concrete structures damaged mostly in columns, therefore focuses on the column for seismic performance has important theoretical and practical significance. But in the actual testing process, not only to spend a lot of money, but also spend a lot of manpower and resources, and research is not comprehensive. With the development of computer technology, using finite element software to simulate the testing of reinforced concrete structure in the modern engineering sciences become increasingly important.This paper through ANSYS software simulate the seismic performance of the high strength reinforced concrete column.1,Summary of the elastic-plastic constitutive relation of concrete, detailed discussion of failure criteria of concrete,failure surfaces and the nonlinear constitutive model of concrete. Summed up several commonly used finite element model in finite element modeling, analyse their application to the situation and the advantages and disadvantages.2,Combination of test results,six reinforced concrete piers were under cyclic loading in the simulation analysis, discussed different parameters effect on the calculation results. The results show that tensile stress release factor,shear transfer coefficient,different constitutive models of reinforced has little impact on the calculation results, The computer simulation result and the test results can be better agreement..3,More detailed analysis of the axial compression ratio and high strength of longitudinal reinforcement on the ductility of pier, from the results of view, pier of the ductility factor ratio increases with the axial compression decreases, Rational allocation of high-strength steel can improve the ductility performance of pier, Just for calculating specimens,when configuring the high-strength steel accounts for the proportion of longitudinal reinforcement was 22%, the column has the best ductility.