Construction Technology of Bidirectional Oblique Concrete-filled Steel Tube Column Frame-core Tube Structure in Super High-rise Building
In this paper,taking a large commercial building in Jiangxi Province as an example,the mechanical simulation of hollow steel pipe and concrete steel pipe was carried out by ABAQUS numerical simulation software.The results show that the stress of the hollow steel pipe is mainly concentrated in the bidirectional oblique joints,and the stress distribution of the concrete steel pipe is uniform,and there is basically no stress concentration phenomenon.The plastic deformation of steel pipe can be increased when concrete is filled inside the steel pipe.The ulti-mate bearing capacity of the empty steel pipe is 309.9 kN,and the ultimate bearing capacity of the concrete steel pipe is 756.3 kN,which is nearly 2.5 times higher than that of the empty steel pipe,and the maximum displacement value is nearly 3 times higher than that of the empty steel pipe,indicating that the plastic capacity of the steel pipe can be significantly improved when the concrete is loaded inside the steel pipe.In addition,the use of Tekla software modeling technology to deepen the design of nodes can effectively reduce the collision and other safety problems in the construction.
High-rise buildingDiagonal steel frame columnDeepen the designFinite element
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