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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维普
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