| In the concrete filled steel tube members,the relationship between the steel tube and concrete is always concerned by the engineering circle.In this paper,based on the existing literature research,with the introduction of the test,the steel tube recycled thickness concrete and the strength of the core concrete are taken as variable parameters,and the recycled concrete members of the steel tube are tested.To investigate the mechanism of bond slip of steel and recycled concrete,analyze the relationship between the bond strength and bond strength,load and relative slip value,and get the load slip curve and bond strength of slip curves,concrete in practical engineering application and provide a theoretical basis for steel tube.This article introduced the concrete column 10 push out test on the regeneration of steel pipe,the recycled concrete filled steel pipes are analyzed.The diameter about thickness ratio and concrete strength on the bond strength of steel and recycled concrete,and the related calculation formula,on this basis,a comprehensive comparison of influencing factors of steel slenderness ratio,concrete pouring,maintenance and the pipe surface roughness on the bond strength of concrete filled steel tube.This paper analyzes the composition of cohesive force between steel and recycled concrete,and the whole process of the test carried out a detailed description for the steel tube deformation development and bond strength of concrete in the test process of each part in the role of test in the process of conversion provides the description of the phenomenon.With the help of the test of 10 specimens,the load on the steel and recycled concrete slip curves were systematically analyzed,and the test data regression,single factors and multiple factors and RCFST initial and ultimate bond strength and the relationship between the calculation formula,in addition,this paper also to explore the effect of bond slip on the mechanical properties of concrete filled steel tubular structure. |
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