Discussion on constitutive relation of concrete creep and shrinkage by numerical calculation

Abstract

In order to establish accurate and effective mechanical models of concrete creep and shrinkage by numerical calculation, the problems of parametric finite element analysis by APDL with ANSYS software and constitutive relations of creep and shrinkage by the creep criterion in the software are discussed. The accuracy of calculating creep coefficient and shrinkage strain by theoretical calculation and numerical simulation is analysed with an example. The calculation results show that the results from the two kinds of methods are in good agreement. It can get very good results to simulate the constitutive relationship of concrete creep and shrinkage by the software, achieving the basic function of accurately describing the long-term deformation effects of concrete. This function is the first and most important step in accurately simulating the long-term effects of complex constructions.