Direct assembly concrete-filled steel tube combined special-shaped column and production method thereof
A technology of steel pipe concrete and special-shaped columns, which is applied in the direction of construction and building construction, can solve the problems of insufficient seismic performance of reinforced concrete columns, poor shear and torsional performance of columns, and insufficient seismic performance, etc., to overcome easy cracking, Fast construction speed and improved ductility
Inactive Publication Date: 2009-10-28
TIANJIN UNIV
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Problems solved by technology
At present, the most widely used special-shaped columns are reinforced concrete special-shaped column structures, but the concrete is easy to crack, so the shear and torsional performance of the column is not good, so the seismic performance is insufficient, and the construction is complicated, requiring a lot of steel bar binding and formwork support. Work
[0005] In order to solve the problem of indoor column convex angle and insufficient seismic performance of reinforced concrete columns, it is necessary to find a column form that can not only ensure ductility, but also give full play to the advantages of special-shaped columns
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[0038] As shown in Figures 1-9, the present invention provides a directly assembled special-shaped steel pipe concrete composite column. The column is formed by connecting single steel pipe bolts with dumbbell-shaped accessories to form an L-shaped, T-shaped or cross-shaped assembled steel pipe combined special-shaped column, and then pouring concrete into the steel pipe. Figure 1a , 1b, 1c are schematic diagrams of the construction forms of L-shaped, T-shaped, and cross-shaped directly assembled concrete-filled steel pipe composite special-shaped columns, respectively. The column is composed of steel pipe 1, dumbbell-shaped decoration, reinforcement plate 9, bolt 4, and concrete 5; the dumbbell-shaped decoration is prefabricated in the factory, and a section of steel pipe is cut according to the distance between single steel pipes. The end plates are respectively welded to form steel tube dumbbell-shaped accessories 6, such as Figure 2a as shown; or weld the end plates at b...
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The invention relates to a direct assembly concrete-filled steel tube combined special-shaped column and a production method thereof. The structure column comprises a steel tube, a dumbbell-shaped studding piece, a reinforced plate, a bolt and concrete. A steel tube combined special-shaped column with an L-shaped, T-shaped or cross-shaped cross section is formed by using the dumbbell-shaped studding piece to directly connect the steel tube, and then the concrete-filled steel tube combined special-shaped column is formed by casting the concrete in the steel tube. The method includes the beneficial effects of: the avoidance of a salient angle appearing at an indoor corner with the column wrapped in the wall, adjustable spacing of a single steel tube and the obtainment of large bending rigidity by using the steel tube with a small cross section, factory-prefabricated components, on-spot bolt connection, fast construction speed and high precision. The special-shaped column is applicable to steel structure residences or office buildings.
Description
technical field [0001] The invention relates to a special-shaped steel pipe concrete composite column, more specifically, to an assembled steel pipe concrete composite special-shaped column structure and a manufacturing method thereof. Background technique [0002] The concrete filled steel pipe structure is composed of concrete filled steel pipes. Due to the restraint of the steel pipes, the core concrete is in a three-way compression state when under pressure, which improves the bearing capacity of the concrete, and due to the filling of the concrete, prevents premature collapse of the steel pipe walls. Buckling, and then reached the effect of 1+1>2, so that it has the characteristics of high strength and good seismic performance. In addition, CFST also has the advantages of good fire resistance, convenient construction, and good economic performance. Therefore, CFST is used for Structural columns offer great advantages. [0003] However, in residential and office buil...
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IPC IPC(8): E04B1/30E04B1/16
Inventor陈志华周婷王小盾刘红波闫翔宇
OwnerTIANJIN UNIV