Axial Mechanical Properties Of Circular Steel Tube Composite Short Column Filled With Steel Reinforced Concrete

Column is an important force structure elements, improve the performance of the structure of columns, to improve the overall performance of the structure has a very important role. With the increase in building height and span of the column increasing the loads required to meet this requirement, the design of column cross-sectional area is gradually increasing. In recent years some scholars have concrete columns with circular steel tube composite short column filled with steel reinforced concrete, The novel column have the advantages of both Concrete-Filled Steel Tube columns and steel reinforced concrete. This column overloading the column section can solve the problem of excessive size.This structure in the form of columns, the four corners of the column configuration is steel, the internal configuration and pipe, steel and steel pipe replacement to play within the structure of the role of the longitudinal reinforcement configuration, and because of the presence of steel and steel making is complicated by the concrete Stress state, which can improve the cross-section bearing capacity, ductility and combination structural rigidity, but also a very good seismic performance, construction, steel banding to reduce manual procedures can effectively reduce the column section size.Firstly, under pressure from the concrete to the performance of the three, combining with three compression to the compression failure mechanism of concrete, reinforced steel described axial working mechanism of circular steel tube composite short column filled with steel reinforced concrete. Secondly, the use of finite element software ANSYS, finite element analysis, structural unit type selection, modeling, analysis and calculation of the analysis of model results concluded. Then, combining the characteristics of single-column pier, bridge projects associated with the following municipal road space requirements, steel reinforced concrete columns under high carrying capacity, the combination of high stiffness, good seismic performance and the advantages of simple construction technique, proposed to the Applied to the kinds of structure in a single column pier.This study and previous studies related to method of concrete pipe, drawing on previous research results and experimental data, summarized reinforced concrete pipe in good agreement with the experimental results related to the formula. Circular steel tube composite short column filled with steel reinforced concrete columns in housing construction, or whether it is in the bridge construction which have wide application space.