Experimental Study And Analysis Of Reinforced Concrete Filled Steel Tubular Outsourcing

In recent years, steel concrete structure in the vigorous development of China, in particular steel arch bridge. Steel arch bridge across the span limit is constantly the same time, relevant aspects of research in particular aspects of their reinforcement is less and less. Steel reinforced concrete structure of the future construction and maintenance of concrete filled steel tubular arch bridge will provide strong theoretical support.Bearing capacity of concrete filled steel tube structure issue is the safety and economy of the main factors. How to improve the bearing capacity of concrete filled steel tubular structures became the engineering problem of great concern. At present, the ultimate bearing capacity of concrete pipe generally depends on the experimental research and numerical analysis, by means of a major capital to resolve its Danxing the stability problem within the scope, but because of the physical property of materials, capacity of the bridge itself influence parameter Hu the initial defects, the complexity and diversity of factors, the general assessment is difficult to accurately calculate the ultimate bearing capacity of concrete filled steel tubular arch bridge state. Especially in the same time be non-linear, initial stress and initial imperfection factors by interaction of elements of uncertainty, computational analysis of complex, often carrying capacity of bridge structure calculations predict lower, to a certain extent lost the guidance to make the calculated significance of the structure to the steel arch bridge construction and use to bring potential problems. Therefore, the urgent need for concrete and steel reinforcement on issues such as research.This paper has been based on research carried out and the bearing capacity of steel reinforced concrete research. ANSYS finite element through the secondary development of ADPL language programming, rational use of ANSYS software, nonlinear, multi-unit, multi-parameters, and powerful post-processing multi-parameter function, the structure of a unit Concrete - Concrete columns study . This paper studies the main results obtained are as follows:â‘ summarized the development of steel and concrete structure on the bearing capacity of concrete filled steel tube structure, state, focuses on the nonlinear theory of concrete pipe, steel pipe initial stress theory, the initial defect theory, and its constitutive; also introduced the ANSYS finite element software analysis software theory and method, analysis of the ANSYS software to calculate the basis.â‘¡The test of the original coat steel concrete reinforcing steel concrete structure function, and studies have been based on the definition of axial compression capacity of concrete filled steel tubular structure formula, and derive concrete coat steel reinforced concrete pipe the capacity formula.â‘¢This paper analyzes the three specimens of a case of ultimate strength, with the ANSYS its internal strength of steel, concrete grade and steel ratio to control the capacity obtained Neiwai pipe size effect The larger capacity of about. In the elastic stage, the higher the concrete strength, steel ratio the higher the capacity the lower the stage in the plastic molding steel ratio and higher, the higher capacity.â‘£verified by an example of reinforcement effect is obtained bearing capacity of reinforced significantly improved, but how kind used in the actual diameter, wall thickness, and the pouring of concrete level to the actual situation in a reasonable choice. Inside and outside the pipe diameter is suggested that cross-ratio of 1.5 to 2.5 for the best, the best steel ratio of 8% to 20%.