Calibración de un modelo de elementos finitos de hormigón armando no-lineal para incluir los efectos de degradación por carga cíclica parte 4.

Abstract

In this research was done a model for columns of reinforced concrete that considers the interaction of the axial load with the bending moment, also the degradation effects by cyclic loading. This model has been used as a fiber model with the materials CONCRETE02 and HYSTERETIC to calibrate 187 tests from the PEER database and develop a semi-empirical general equation based on a calibration, so that it is possible to determine the damage values in the steel according to its parameters of geometry and materials. In this work, was created a software in Matlab in conjunction with Opensees, the model was defined to be used to simulate the actions of reinforced concrete and those models were calibrated with the results of the tests. For the realization of the general equation, a multivariable linear regression was performed with statistical software; The calibrated variables were considered as dependent variables, the parameters of the materials and the geometry of the tests as independent variables in the multivariable linear regression analysis. The rules for approving whether the equation may be acceptable or not are defined by the correlation values between the variables and the standard deviation. To conclude with the research, the results of the mathematical solution are compared with the statistical data with the calibrated tests.