Nonlinear Analysis Of The Reinforced Concrete Member

The structure of the pilot in the "concrete structure" theory of the birth and development of the process plays an immeasurable role.However,the structure of the pilot in particular, large-scale structure of the test often takes a lot of human and financial resources,it is very difficult to repeat the same test so many times,and the reduced scale model test of a "distortion" effect.In this case,the computer simulation technology matures,the field of structural engineering in the new results are emerging.Reinforced concrete structures in civil engineering applications is a structure of the most extensive.However,the mechanical properties of reinforced concrete is not available is very comprehensive,particularly in respect of concrete.Analysis of the traditional analytical method of nonlinear reinforced concrete structure problems,can only solve some very simple calculation of the structure and components.For a large number of reinforced concrete structural analysis problems,can only use numerical solutions.Reinforced concrete finite element analysis to give the structure of the internal force and deformation of the entire process of development;To describe the formation of cracks and,as well as the structure and form to undermine the process;Able to limit the carrying capacity of the structure and reliability assessment;Able to reveal weaknesses in the structure in order to optimize the structure design.At the same time,it widely applicable to a variety of structural types and different stress conditions and environment.In this paper,the development of non-linear analysis approach,a more detailed presentation of the finite element software ADINA and ANSYS in the reinforced concrete structure,step by step analysis of a reinforced concrete structure of the finite element analysis techniques and the use of commercial finite element analysis software for concrete the structure of the two most important components-beams and columns of the comparative study of performance analysis.Existing literature on the inquiry,collation and analysis,this article had the following major tasks:1st,finite element simulation of the current analytical methods are summarized,and system introduction finite element software ADINA and ANSYS applied in the reinforced concrete built-up section.2nd,system introduction reinforced concrete component material performance as well as reinforced concrete nonlinear analysis main mathematical model. 3rd,the use of ANSYS and ADINA software simply supported beam simulation were compared.4th,uses the ANSYS analysis software,conducted 7 radical center bearing reinforcing steel-side steel pipe concrete short stump simulation test research,the research had indicated the reinforcing steel the existence strengthened the pillar ductility greatly.5th,based on ANSYS,has conducted 2 radical center bearing reinforcing steel-side steel pipe concrete member in bending simulation test research.The research indicated that,is bent in the test sample in the process to be possible to think approximately the side steel pipe and the reinforcing steel distortion is coordinated.6th,based on ANSYS,has carried on under 3 low week repeatedly loads the reinforcing steel-side steel pipe coagulation earth pyramid earthquake resistance performance research. The research indicated,because the mixing column interior existence reinforcing steel and pours into the nuclear core column which its internal concrete forms,enable the new built-up column to have compared to the ordinary reinforced concrete column as well as a side steel pipe coagulation earth pyramid better ductility and higher guards against the collapse ability.