Application And Stress Performance Analysis On Horizontal Haunch Reinforced Concrete Beam-Steel Reinforced Concrete Column Joints

Tall buildings and skyscrapers spout all over the country. Profile steel & concrete structures are widely used for its advantages in bearing capacity, severity, surface size, aseismicity and convenience. Among Profile steel & concrete structures, the reinforced concrete beam-profile steel column structure is the most used structure.Currently, the joint structures in the RC beam-SRC column structure include: vertical beam-piercing steel bar joint, welding joint of partial beam vertical steel bar and steel braced support, connecting joint of partial beam vertical steel bar and short steel beam, connecting joint of partial beam vertical steel bar and socket machine.In the perspective of construction, this paper discusses a method that all beam vertical steel bars cross or pierce the reinforced concrete beam-steel reinforced concrete column structure of column corrugated steel web through the edge of column steel wing by beam horizontally haunch. The method of horizontally haunch at beam end assure a simple joint structure and clear force transmission, which contributes to avoiding the sudden changes in structure surface bearing capacity and severity caused by steel braced supports. This method benefits the manufacture, processing and transportation of column profile steel, the hoist of profile steel and other materials, leading to less construction procedure, higher construction quality and faster construction schedule. This paper provides analysis on calculation format of joint bearing capacity under different standards. This paper proposes that horizontally haunch at beam end has no effect on or may increase the joint bearing capacity of reinforced concrete beam-profile concrete column without changing the steel reinforced concrete formwork column, the interface size of reinforced concrete formwork beam, reinforcing bars and reinforcing steel. It is illustrated in ABAQUS finite element analysis that the severity and flexibility of the joint in reinforced concrete beam-steel reinforced concrete column structure to which horizontally haunch at beam end applies is better than the joint in welding steel braced support structure.This paper provides advice on the design of reinforced concrete beam-steel reinforced concrete column structure, including 58 beam-column joint design drawings, and also provides advice on processing and installation of profile steel in joint construction, processing, installation and connection of steel bars, installation of formwork and concrete pouring as construction application reference.