The Application Of Steel Reinforced Concrete Components On The Construction Of Subway Elevated Station And The Analysis Of Its Mechanical Properties

In recent years, with the rapid development of China’s subway construction, the elevated stations often act as the main structures in the subway station. Due to the special type of the elevated station, steel reinforced concrete structures become more widely used in the elevated station. The advantages and applicability of the steel reinforced concrete structures have been proved by a lot of investigations.The Yuanboyuan Station of Beijing subway line14with steel reinforced concrete structure is studied in this paper. The mechanical properties of the steel reinforced concrete structure in the elevated station are investigated by theoretical analysis, calculation and numerical simulation from the local to the overall.First of all, the comparison of the steel reinforced concrete program with prestressed reinforced concrete program verifies the applicability of the steel reinforced concrete structure in the elevated station. Steel reinforced concrete structure has a lot of advantages in control of the component’s cross-section height, the structural overall performance, and the construction cycle.Secondly, the nonlinear analysis of steel reinforced concrete cantilever beam is calculated by ANSYS software. The ultimate bearing capacity and the failure process of the cantilever beam are obtained. The three materials of steel, reinforcement and concrete can work together very well; and the component has good carrying capacity and ductility. The influences of concrete strength, reinforcement ratio of the components, and the ratio of the steel components on the ultimate bearing capacity are discussed in details. There are some influences of concrete strength, reinforcement ratio of the component of the tension zone, and the area of the steel flange components on ultimate bearing capacity, while the web area of the reinforcement and the ratio of compression zone of reinforced steel components have smaller influences on ultimate bearing capacity. The bearing capacity of the component can be improved in the design process by increasing the strength grade of concrete, the reinforcement ratio of the tensile zone and the area of steel flange.Finally, the SRC Pushover analysis of the main structure is carried out by Midas/gen finite element software. It is verified that the SRC structure has better seismic performance under seismic action. The seismic resistance of the steel reinforced concrete is2.6times to the common reinforced concrete structure for the same section form and area. If the structure does not conform to the standard requirements, it can be proved by increasing the section size of frame column, and putting a certain amount of steel in the structure to meet the standard aseismic performance requirements. Therefore, the single span structure can be applied to some engineering structures.