Nonlinear Computation Theory Research Based On Entire Stress Process Of Reinforced Concrete Member

Study of nonlinear computation theory in the reinforced concrete component is one of the most important and complicated fields in the reinforced concrete discipline. Based on the research of reinforced concrete nonlinear computation theory, an exactitude and efficient nonlinear computation theory is proposed, which can calculate the stress state in entire stress process of any section.This paper explains the destructive criterion under multiaxial stress state and constitutive model of the nonlinear analysis. On the foundation of the predecessor studies, according to the non-linear theory of elasticity theory and the plastic theory in the finite element analysis of concrete,research the entire stress process of bended component and pressed component, a rational reinforced concrete law is selected, and set up nonlinear model of reinforced concrete.Integrate the nonlinear analysis model of the deflection pressed member, this article uses Turbo C to design the nonlinear analysis program. This program can carry on the nonlinear analysis to the reinforced concrete structure, simulates entire process from loading to destruction, obtain relative corner and height coefficient of the section. Thus further analyzes stress and deformation in the different stress increasing stage. I compared computed result with the experimentation data, and found they were tally with each other. Thus has confirmed this program computed result reliability, as can be referred in the practical design.