Embedded folded plate lattice type hollow interlayer column

Abstract

The invention discloses an embedded folded plate lattice type hollow sandwich column, which belongs to the technical field of building construction and comprises an outer steel pipe, an inner steel pipe and folded plates. The inner steel pipe is sleeved with the outer steel pipe, and the center line of the outer steel pipe and the center line of the inner steel pipe are collinear. A gap for arranging a folded plate is formed between the outer steel pipe and the inner steel pipe; the folded plate is a corrugated plate; and the outer steel pipe and the inner steel pipe are fixedly connected with the folded plate. The folded plates are additionally arranged between the inner steel pipe and the outer steel pipe, so that buckling failure of the square steel pipe can be effectively restrained, the rigidity and deformation resistance of the column are remarkably enhanced, and the column has the advantages of high bearing capacity, good hysteretic performance, large lateral stiffness, good ductility performance, reasonable stress, light self weight and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and more particularly relates to an embedded folded plate lattice type hollow sandwich column. Background Art

[0002] Hollow sandwich concrete columns, consisting of inner and outer steel tubes and a concrete filling in between, have promising applications, but still have room for improvement. The high density of the concrete filling makes the column excessively heavy, making it particularly unsuitable for super-high-rise buildings and long-span bridges, which have strict weight constraints. This not only increases the difficulty and cost of infrastructure construction, but also increases the load on the structure, impacting overall stability and economic efficiency. Mechanically, even with the restraint of the steel tubes, concrete still exhibits deficiencies under complex stresses. Faced with horizontal loads such as earthquakes and strong winds, it exhibits weak deformation capacity and insufficient ductility. It is prone to brittle failure under overload, severely weakening its seismic performance, making it difficult to dissipate energy efficiently, and jeopardizing the structural safety. During construction, concrete requires vibration to ensure compaction, which requires specialized equipment and personnel. Furthermore, the post-cast curing period is long, requiring strict temperature and humidity control, significantly slowing construction progress and increasing costs and management complexity. Therefore, the use of steel columns as alternatives to concrete columns for support is being considered, but this still presents issues of insufficient rigidity and easy deformation. Summary of the Invention

[0003] In view of this, the present invention provides a hollow sandwich column with an embedded folded plate lattice structure, which adopts the following technical solution:

[0004] A hollow sandwich column with an embedded folded plate lattice structure, comprising an outer steel pipe, an inner steel pipe and a folded plate; the outer steel pipe is sleeved on the outside of the inner steel pipe, and its center line is arranged collinearly with the center line of the inner steel pipe; a gap is formed between the outer steel pipe and the inner steel pipe for arranging the folded plate; the folded plate is arranged as a corrugated plate; the outer steel pipe and the inner steel pipe are both fixedly connected to the folded plate.

[0005] Furthermore, there are a plurality of folding plates, and the shapes are set to be trapezoidal, sinusoidal, rectangular or semicircular.

[0006] Furthermore, the cross sections of the outer steel pipe and the inner steel pipe are set to the same shape, which is rectangular or circular.

[0007] Furthermore, the wave crests of the folding plate are fixedly connected to the inner steel pipe by spot welding or plug welding; and the wave troughs of the folding plate are fixedly connected to the outer steel pipe by spot welding or plug welding.

[0008] Furthermore, a plurality of cavities are formed between the folding plate and the outer steel pipe and the inner steel pipe for arranging cables.

[0009] Furthermore, a plurality of connecting pieces are evenly arranged along the axial direction at the connection positions of the outer steel pipe, the inner steel pipe and the folding plate; the connecting pieces are configured as bolts or rivets.

[0010] The beneficial effects of the present invention are:

[0011] The present invention provides a hollow sandwich column with an embedded folded plate lattice structure. By adding folded plates between the inner and outer steel tubes, the buckling failure of the square steel tube can be effectively suppressed, the column's rigidity and deformation resistance can be significantly enhanced, and it has a high bearing capacity. In addition, compared to the steel tube concrete column, the internal hollow area of the hollow sandwich column of the present invention does not need to be poured with concrete, and the inner tube area can be used as a cable channel. Since concrete is not used, assembly construction can be achieved, greatly improving construction efficiency and convenience. While alleviating the problem of local buckling of steel tubes, the present invention can also effectively reduce the deadweight of the structure. It has the characteristics of high bearing capacity, good hysteresis performance, high lateral stiffness, good ductility, reasonable force, and light deadweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a top view of the present invention.

[0015] Figure 3 It is a structural schematic diagram of the folding plate of the present invention.

[0016] Among them, in the figure:

[0017] 1-Inner steel pipe; 2-Folded plate; 3-Outer steel pipe; 4-Connecting piece. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Please see the attached Figure 1-3 , the present invention provides an embedded folded plate lattice type hollow sandwich column, comprising an outer steel tube 3, an inner steel tube 1 and a folded plate 2;

[0020] The outer steel pipe 3 is sleeved on the outside of the inner steel pipe 1, and its center line is collinear with the center line of the inner steel pipe 1; the inner diameter of the outer steel pipe 3 is smaller than the inner diameter of the inner steel pipe 1, and a gap is formed between them for setting the folding plate 2; the outer steel pipe 3 and the inner steel pipe 1 are both fixedly connected to the folding plate 2.

[0021] There are a number of folding plates 2, which are formed by bending ordinary steel plates at one time to form corrugated steel plates; the bending shape of the folding plates 2 can be set to be trapezoidal, sinusoidal, rectangular or semicircular.

[0022] The wave crests of the folded plate 2 are fixedly connected to the inner steel pipe 1 by spot welding or plug welding; the wave troughs of the folded plate 2 are fixedly connected to the outer steel pipe 3 by spot welding or plug welding.

[0023] A plurality of cavities are formed between the folding plate 2 and the outer steel pipe 3 and the inner steel pipe 1 , and the cavities can be used as cable channels.

[0024] The cross sections of the outer steel tube 3 and the inner steel tube 1 are set to be the same shape, which can be rectangular or circular.

[0025] The connection positions of the outer steel tube 3, the inner steel tube 1 and the folding plate 2 are evenly provided with a plurality of connecting members 4 along the axial direction; the connecting members 4 can be configured as bolts or rivets.

[0026] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0027] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hollow sandwich column with an embedded folded plate lattice, characterized in that: The invention comprises an outer steel pipe (3), an inner steel pipe (1) and a folding plate (2); the outer steel pipe (3) is sleeved on the outside of the inner steel pipe (1), and its center line is arranged collinearly with the center line of the inner steel pipe (1); a gap for arranging the folding plate (2) is formed between the outer steel pipe (3) and the inner steel pipe (1); the folding plate (2) is arranged as a corrugated plate; the outer steel pipe (3) and the inner steel pipe (1) are both fixedly connected to the folding plate (2).

2. The embedded folded plate lattice hollow sandwich column according to claim 1, characterized in that: A plurality of folding plates (2) are provided, and the shapes are set to be trapezoidal, sinusoidal, rectangular or semicircular.

3. The embedded folded plate lattice hollow sandwich column according to claim 1, characterized in that: The cross sections of the outer steel pipe (3) and the inner steel pipe (1) are arranged to have the same shape, which is rectangular or circular.

4. The embedded folded plate lattice hollow sandwich column according to claim 1, characterized in that: The wave crest of the folded plate (2) is fixedly connected to the inner steel pipe (1) by spot welding or plug welding; and the wave trough of the folded plate (2) is fixedly connected to the outer steel pipe (3) by spot welding or plug welding.

5. The hollow sandwich column with embedded folded plate lattice structure according to claim 1, characterized in that: A plurality of cavities are formed between the folding plate (2), the outer steel pipe (3) and the inner steel pipe (1) for arranging cables.

6. The hollow sandwich column with embedded folded plate lattice structure according to claim 1, characterized in that: The connection positions between the outer steel tube (3) and the inner steel tube (1) and the folding plate (2) are evenly provided with a plurality of connecting members (4) along the axial direction; the connecting members (4) are configured as bolts or rivets.

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