A new type of concrete-filled steel tube composite section column

Abstract

The present invention discloses a new type of steel tube concrete composite section column. The composite column adopts an angular section and a groove section welded together to form a rectangular hollow ribbed outer steel pipe and concrete is poured therein, thereby forming a steel tube concrete column. The angular section is located at the four corners of the outer steel pipe, and the angle sections are welded inwardly by the flanges of the groove section. The patent of the present invention aims to assemble columns using common section forms, and use the flanges of the groove section as stiffening ribs of the outer steel pipe, so as to reduce the thickness of the steel plate under the condition of ensuring the local stability of the steel pipe wall, so as to save the amount of steel; in addition, the existing overcapacity profiles (angle steel) can also be used to weld and combine with other sections into a new composite section, aiming to digest the excess steel production capacity, and the process is simple and convenient, and at the same time provides convenience for the construction of through-type nodes, with the advantages of assembly construction and simple installation operation, and has a relatively broad application prospect.

Description

Technical Field

[0001] The present invention relates to the field of construction, and specifically to a new type of concrete-filled steel tubular composite section column. Background Art

[0002] Traditional concrete-filled steel tubular columns have obvious advantages such as high bearing capacity and large stiffness. The outer steel tube is directly produced and formed in a factory or welded by multiple plate components. In order to prevent local buckling of the steel tube, strict restrictions are usually imposed on the width-thickness ratio of the steel tube, resulting in a large amount of steel consumption. For traditional rectangular concrete-filled steel tubular columns, if the thickness of the steel tube is to be reduced to reduce the steel consumption, stiffeners must be additionally provided inside the steel tube, and the processing procedures are relatively cumbersome and the cost is relatively high. Summary of the Invention

[0003] The object of the present invention is to provide a new type of concrete-filled steel tubular composite section column, which is characterized in that: the outer steel tube of the composite section column is composed of four corner components and at least four side components. The corner components are located at the corners of the outer steel tube of the composite section column. The side components are located on the four sides of the outer steel tube of the composite section column, and each side has at least one side component. Adjacent components are connected together. Concrete is poured inside the outer steel tube to form a composite column.

[0004] Further, the corner component of the outer steel tube is angular, having two mutually perpendicular sides, respectively denoted as A branch and B branch. The side component of the outer steel tube is channel-shaped, having one web and two flanges perpendicular to the web. The two flanges are respectively denoted as A flange and B flange.

[0005] Further, the corner component of the outer steel tube is processed into an angular section by using angle steel or steel plate, and the corner component is equilateral or unequal-sided. The side component is a channel section directly processed from a steel plate. The cross-sectional size of the composite column can be changed by adjusting the branch size of the corner component and the web size of the side component. Adjacent components are connected by welding.

[0006] Further, any one corner component of the outer steel tube is connected to two side components. These two side components are respectively located on two adjacent sides of the outer steel tube of the composite section column. Their flanges face the inside of the column. The A branch of the corner component is connected to the A flange of one side component, and the B branch of the corner component is connected to the B flange of the other side component. The connection between the corner component and the side component is connected by butt weld.

[0007] Further, the composite section column is a rectangular column.

[0008] Further, the outer steel tube of the composite section column being a rectangular column includes four corner components and four side components.

[0009] Furthermore, the side surface of the rectangular column is a plane formed by the A limb of one corner component, the B limb of another corner component, and the web of one side component.

[0010] The present invention has the following beneficial effects: This new type of concrete-filled steel tubular composite section column utilizes the flange of the channel section as the stiffener for the outer steel pipe wall. Since the stiffener can improve the out-of-plane stiffness of the steel pipe wall and provide restraint for adjacent plate members, the width-thickness ratio of the steel pipe wall can be reduced. Therefore, under the condition of ensuring the local stability of the steel pipe wall, the thickness of the steel plate of the channel section can be reduced, achieving the purpose of saving steel and reducing the steel consumption; this new type of composite section steel pipe can also facilitate the construction and installation of the beam-column through-hole type joint. In the joint area, by truncating the channel section, a position is reserved for the cross beam to pass through the joint area, improving the operability of the through-hole type joint and reducing the construction accuracy requirements. This composite section steel pipe can also be directly welded and formed by using the existing angle steel and steel plate processed into a channel section, which can digest the excess section steel production capacity and has a simple and convenient process. At the same time, since it facilitates the construction of the through-hole type joint and has the advantages of prefabricated construction and simple installation operation, it has a relatively broad application prospect and is conducive to the further popularization of the concrete-filled steel tubular structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 are the main view and cross-sectional view of the structure of Embodiment 1 of the present invention;

[0012] Figure 2 is a schematic diagram of the composite section column assembly 1 of the present invention;

[0013] Figure 3 is a schematic diagram of the composite section column assembly 2 of the present invention;

[0014] Figure 4 is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0015] In the figure: corner component (1), A limb (101), B limb (102), side component (2), web (201), A flange (202), B flange (203), filled concrete (3), butt weld (4), outer steel pipe of the composite section column (5),

[0016] frame beam (6): shown as the section steel part of the composite beam, cross member (601), T-shaped member (602), L-shaped member (603). DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present invention will be further described below in conjunction with embodiments, but it should not be understood that the above-mentioned subject matter scope of the present invention is limited to the following embodiments. Without departing from the above technical idea of the present invention, various substitutions and changes should be included within the protection scope of the present invention according to the common general knowledge and conventional means in the art.

[0018] Embodiment 1:

[0019] Refer to Figure 1 , a novel concrete-filled steel tubular composite section column, characterized in that: four corner components 1 and four side components 2 are combined to form a steel pipe 5 wrapped around the composite section column, and concrete is poured inside to form a composite column.

[0020] Refer to Figure 2 , the corner component 1 is angular, having two mutually perpendicular sides, which are respectively denoted as A limb 101 and B limb 102 for the convenience of description.

[0021] Refer to Figure 3 , the side component 2 is channel-shaped, having a web 201 and two flanges perpendicular to the web. The two flanges are respectively denoted as A flange 202 and B flange 203.

[0022] The composite section column is a rectangular column. Among the four corner components 1, any one corner component 1 is connected to two side components 2. The connection between the corner component 1 and the side component 2 is connected by a butt weld 4. These two side components 2 are respectively located on two adjacent sides of the steel pipe 5 wrapped around the composite section column. The A limb 101 of this corner component 1 is connected to the A flange 202 of one side component 2, and the B limb 102 of this corner component 1 is connected to the B flange 203 of the other side component 2.

[0023] It should be noted that the sides of the rectangular column are all planes, which are formed by the A limb 101 of one corner component 1, the B limb 102 of another corner component 1, and the web 201 of one side component 2.

[0024] The inside of the steel pipe 5 wrapped around the composite section column is filled with concrete 3, and the A flange 202 and B flange 203 face the inside of the steel pipe and serve as stiffeners for the steel pipe wall.

[0025] In this embodiment, columns are assembled using common cross-section forms, and the flanges of the channel-shaped cross-section are used as stiffeners for the outer steel pipe. Thus, under the condition of ensuring the local stability of the steel pipe wall, the thickness of the steel plate can be reduced to save the amount of steel used; in addition, existing overcapacity profiles (angle steels) can also be welded and combined with other cross-sections to form a new composite section, aiming to digest the overcapacity of profiled steel, and the process is simple and convenient. At the same time, it provides convenience for the construction of through-type joints, has the advantages of prefabricated construction and simple installation operation, and has a relatively broad application prospect.

[0026] Example 2:

[0027] This example is based on Example 1, and the corner component 1 is an equilateral or unequal-leg angle steel. The sizes of several corner components 1 that make up the composite cross-section column may be different. The web 201 sizes of the side components 2 that make up the outer steel pipe 5 of the composite cross-section column may be different.

[0028] That is, by selecting equilateral or unequal-leg angle steels, or adjusting the sizes of the angle-shaped cross-section branches and the height of the side component webs, different-sized rectangular steel pipes can be spliced and combined.

[0029] Example 3:

[0030] Refer to Figure 4 , this example is a beam-column through-type joint of the novel concrete-filled steel tube composite cross-section column described in Example 1. It should be noted that the composite cross-section column of Example 1 uses the flange of the channel section as the stiffening rib of the welded steel pipe, which can reduce the steel plate thickness and save steel under the condition of ensuring the local stability of the steel pipe wall. The outer steel pipe of this novel composite cross-section column can facilitate the installation of the beam-column through-type joint. Truncating the channel section within the height range of the cross beam can leave a position for the cross beam to pass through the joint area, providing construction convenience, so that assembly construction can be realized, the installation operation is simple, and it is beneficial to the further popularization of the concrete-filled steel tube structure. The beam-column through-type joint includes a composite cross-section column (formed by an outer steel pipe 5 and internally filled with concrete) and a frame beam (a composite beam formed by a floor slab and a section steel 6), and can be applied to the middle column joint.

[0031] Refer to Figure 4 In part (a) of, the side components 2 on the four sides of the composite cross-section column are all truncated in the joint area to form four notches. The cross member 601 is a cross-shaped component made of two orthogonal frame beams 6 in the joint area (only the section steel part of the composite beam is shown in the figure, and the beams are spliced outside the joint area). Its four beam segment branches are respectively embedded into the four notches (that is, passing through the composite cross-section column), and are connected with the outer steel pipe 5 of the composite cross-section column and the internal concrete to form a beam-column through-type middle column joint.

[0032] Example 4:

[0033] Refer to Figure 4 , similar to Example 3, this example is a beam-column through-type joint of the novel concrete-filled steel tube composite cross-section column described in Example 1, and is characterized in that: it includes a composite cross-section column (formed by an outer steel pipe 5 and internally filled with concrete) and a frame beam (a composite beam formed by a floor slab and a section steel 6), and can be applied to the edge column joint.

[0034] Refer to Figure 4In part (b), the side components 2 on three sides of the composite cross-section column are all truncated in the joint area, forming three notches. The T-shaped member 602 is a T-shaped cross member formed by the frame beams 6 in two orthogonal directions in the joint area (only the steel section of the composite beam is schematically shown in the figure, and the beams are spliced outside the joint area). The three beam segments of its branches are respectively inserted into the three notches (i.e., passing through the composite cross-section column), and are connected with the outer steel pipe 5 and the internal concrete of the composite cross-section column to form a beam-column through-core side column joint.

[0035] Embodiment 5:

[0036] Refer to Figure 4 , similar to Embodiment 4, this embodiment is a beam-column through-core joint based on the novel concrete-filled steel tube composite cross-section column described in Embodiment 1, and is characterized in that: it includes a composite cross-section column (formed by an outer steel pipe 5 and internally poured concrete) and a frame beam (a composite beam formed by a floor slab and a steel section 6), and can be applied to a corner column joint.

[0037] Refer to Figure 4 In part (c), the side components 2 on two sides of the composite cross-section column are all truncated in the joint area, forming two notches. The L-shaped member 603 is an L-shaped cross member formed by the frame beams 6 in two orthogonal directions in the joint area (only the steel section of the composite beam is schematically shown in the figure, and the beams are spliced outside the joint area). The two beam segments of its branches are respectively inserted into the two notches (i.e., passing through the composite cross-section column), and are connected with the outer steel pipe 5 and the internal concrete of the composite cross-section column to form a beam-column through-core corner column joint.

[0038] Embodiment 6:

[0039] This embodiment is based on Embodiments 3 to 5. The frame beam 6 can adopt a concrete-filled U-shaped steel composite beam (the U-shaped steel is filled with concrete to form a composite beam with the floor slab), or can also adopt steel beams or composite beams with other cross-sectional forms.

[0040] After the beam segment of the frame beam 6 is placed in the notch of the composite cross-section column (i.e., passing through the composite cross-section column), the frame beam 6 is spliced and connected outside the joint. The frame beam 6 is connected to the corner components and side components of the composite cross-section column by welding.

Claims

1. A new type of concrete-filled steel tubular composite section column, characterized in that : The outer steel pipe (5) of the composite section column is composed of four corner components (1) and at least four side components (2); the corner components (1) are located at the corners of the outer steel pipe (5) of the composite section column; the side components (2) are located on the four sides of the outer steel pipe (5) of the composite section column, and each side has at least one side component (2); adjacent components are connected together; concrete is poured inside the outer steel pipe (5) to form a composite column. The corner component (1) of the outer steel pipe (5) is angular, having two mutually perpendicular sides, denoted as A limb (101) and B limb (102) respectively. The side component (2) of the outer steel pipe (5) is channel-shaped, having a web (201) and two flanges perpendicular to the web. The two flanges are denoted as A flange (202) and B flange (203) respectively.

2. A novel concrete-filled steel tubular composite section column according to claim 1, characterized in that: The corner component (1) of the outer steel pipe (5) is processed into an angular section using angle steel or steel plates, and the corner component (1) is equilateral or non-equilateral. The side component (2) is a channel section directly formed by processing a steel plate. The cross-sectional size of the composite column can be changed by adjusting the limb size of the corner component (1) and the web size of the side component (2). Adjacent components are connected by welding.

3. A novel concrete-filled steel tubular composite section column according to claim 2, characterized in that: Any one corner component (1) of the outer steel pipe (5) is connected to two side components (2). These two side components (2) are respectively located on two adjacent sides of the outer steel pipe (5) of the composite section column; their flanges face the inside of the column. The A limb (101) of the corner component (1) is connected to the A flange (202) of one side component (2), and the B limb (102) of the corner component (1) is connected to the B flange (203) of the other side component (2). The connection between the corner component (1) and the side component (2) is connected by a butt weld (4).

4. A novel concrete-filled steel tubular composite section column according to claim 1 or 3, characterized in that: The composite section column is a rectangular column.

5. A novel concrete-filled steel tubular composite section column according to claim 4, characterized in that: The outer steel pipe (5) of the composite section column that is a rectangular column includes four corner components (1) and four side components (2). The side of the rectangular column is a plane composed of the A limb (101) of one corner component (1), the B limb (102) of another corner component (1), and the web (201) of one side component (2).

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