Construction Technology of Large Diameter Bifurcated Tubular Column with Inword and Qutward Inclination in Tall Building
In the project of Xi'an Qujiang Cultural and Creative Center,the outer frame steel structure of the tower consists of 3 corner steel columns,which are inward and outward inclination bifurcated large-diameter tubular columns,the characteristics of the bifurcated position are large column diameter,long bifurcated intersections,and large axial stress,the precision of steel component processing and on-site installation is required,and the previous cutting technology for small diameter tubular cannot be applied.In order to solve the problems of difficult processing,high production and on-site installation accuracy requirements,difficult overall transportation of bifurcation joints,and welding requirements for intersecting large intersections,precision control was carried out from multiple processes,such as joint optimization,intersection layout and cutting,factory pre-assembly,and on-site installation.The installation of bifurcated tubular columns was successfully achieved,and the accuracy control meets the design requirements.
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