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Open steel tube concrete structure with batten plates on cold-formed turned edge

A technology of steel pipe concrete and curling band, which is applied in the direction of building structure and construction, can solve the problems of difficulty in ensuring the quality of inner filling concrete, stress concentration at the corners of multilateral steel pipes, and inconvenient fabrication of assembled steel pipes, etc., and it is easy to guarantee the quality , weakening of stiffness and torsional performance, and improvement of fatigue performance and structural rigidity

Pending Publication Date: 2020-11-24
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can effectively solve the problems existing in the existing concrete-filled steel pipe structures, such as the inconvenience of construction, the difficulty of ensuring the quality of the inner filling concrete, the inconvenience of making assembled steel pipes, the large number of welding seams in steel pipe groups and the difficulty in controlling the welding quality, and the stress concentration at the corners of multilateral steel pipes, etc.

Method used

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  • Open steel tube concrete structure with batten plates on cold-formed turned edge
  • Open steel tube concrete structure with batten plates on cold-formed turned edge
  • Open steel tube concrete structure with batten plates on cold-formed turned edge

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Embodiment 1

[0042] Such as figure 1 As shown, the embodiment 1 of the present invention includes a rectangular steel pipe 1 with an outer opening, a trim plate 2 evenly arranged in the direction of the opening of the rectangular steel pipe 1 , an inner filling concrete 3 filled inside the rectangular steel pipe 1 with the opening, and a rectangular steel pipe arranged at the opening according to the design requirements. The PBL stiffener 4 on the inner wall of the steel pipe 1 .

[0043] In the actual production of the open rectangular steel pipe 1, first draw the reference line for cold bending and rolling of the steel plate on the steel plate with the designed thickness according to the designed rectangular steel pipe size, and then weld the PBL stiffener 4 on the steel plate as required, as shown in figure 2 shown. Then in the factory, the steel plate containing the PBL stiffener 4 is rolled into a seamless open rectangular steel pipe 1 according to the order of cold bending and rollin...

Embodiment 2

[0046] Such as Figure 7 As shown, Embodiment 2 of the present invention includes the hexagonal steel pipe 5 with the outer opening, the trim plate 2 evenly arranged in the opening direction of the hexagonal steel pipe 5, the inner filling concrete 3 filled in the inner side of the hexagonal steel pipe 5 and according to The design requires the PBL stiffeners 4 arranged on the inner wall of the open hexagonal steel pipe 5 .

[0047] In the actual production of the open hexagonal steel pipe 5, first draw a reference line for cold bending and rolling of the steel plate on the steel plate with the designed thickness according to the designed hexagonal steel pipe size, and then weld the PBL stiffener 4 on the steel plate as required, such as Figure 8 shown. Then in the factory, the steel plate containing the PBL stiffener 4 is rolled into a seamless open hexagonal steel pipe 5 according to the order of cold bending and rolling, and the order of cold bending and rolling is as fol...

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Abstract

The invention discloses an open steel tube concrete structure with batten plates on a cold-formed turned edge. The open steel tube concrete structure comprises an open outer steel tube, a plurality ofbatten plates arranged on an opening of the open outer steel tube, a plurality of PBL stiffening ribs arranged on the inner wall of the open outer steel tube, and concrete filled in the open outer steel tube; and the open outer steel tube is manufactured by adopting a steel plate cold bending hemming technology. The structure is simple, the design is reasonable, construction is convenient, the construction cost is low, the mechanical property is excellent, and the using effect is good; and the problems that in an existing multilateral concrete-filled steel tube structure, the number of assembled outer steel tube weld joints is large, the stress concentration phenomenon is obvious, the manufacturing process is inconvenient, concrete is not conveniently poured into steel tubes, and the concrete compactness is difficult to guarantee can be effectively solved.

Description

technical field [0001] The invention relates to a steel pipe concrete structure, in particular to an open steel pipe concrete structure with cold-formed curling and embellished plates. Background technique [0002] Concrete-filled steel pipe structure refers to the composite structure formed by filling concrete inside steel pipes. The tensile and compressive properties of steel are good, and the compressive performance of concrete is better than that of tensile performance. The steel tube concrete structure gives full play to the strengths of the two materials, and the steel tube is used for the hoop effect of the inner filling concrete, so that the steel tube concrete has excellent mechanical properties. with higher carrying capacity. At present, CFST structures are widely used in structures such as bridges, offshore platforms, and industrial plants. In addition, the arrangement of perforated stiffeners (PBL stiffeners) in the steel pipe can improve the combined effect of...

Claims

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Application Information

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IPC IPC(8): E04B1/30
CPCE04B1/30
Inventor 刘永健姜磊刘震北龙辛赵瑞张之恒张国靖赵鑫东
Owner CHANGAN UNIV