Concrete filled steel tubular column

Abstract

The utility model discloses a steel pipe concrete column which comprises a square steel pipe and a concrete column, and the concrete column is formed after concrete is poured and solidified in the square steel pipe. The square steel tube comprises two L-shaped steel plates with L-shaped cross sections, two long sides of the two L-shaped steel plates are in butt joint with each other, and the square steel tube with a square cross section is formed after the two L-shaped steel plates are spliced. Two sets of connecting structures are arranged between the two L-shaped steel plates, and the two sets of connecting structures are arranged between the long edge sides of the two L-shaped steel plates correspondingly and used for connecting the two L-shaped steel plates. According to the L-shaped steel plate, the connecting structure is arranged, and the two L-shaped steel plates do not need to occupy more assembly space when being spliced under the close fit of the corresponding connecting plates, connecting rods and positioning grooves; and meanwhile, through the arrangement of the elastic parts, the connection between the connecting rods and the connecting holes can be tighter, and the stability of the whole structure when the two L-shaped steel plates are connected is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of civil engineering, in particular to a steel tube concrete column. Background Art

[0002] In general civil engineering construction, steel tube concrete columns are used. There is no need to tie steel bars, support formwork, and remove formwork, so the construction is simple. Because there is no steel bar in the tube, it is easy to pour and vibrate to make it dense. In particular, the current construction techniques such as pumped concrete, high-position non-vibration concrete, and vibration-free self-compacting concrete can accelerate the construction progress of steel tube concrete components. In square steel tube concrete columns, in order to prevent local buckling of the steel tube, it is necessary to limit the width-to-thickness ratio of the steel tube. Under the condition that the width of the steel tube is certain, in order to meet the width-to-thickness ratio requirements, the wall thickness of the steel tube needs to be increased, resulting in an increase in the amount of steel used. Ribbed square steel tubes can be used to reduce the amount of steel used while meeting the width-to-thickness ratio.

[0003] In the prior art, anti-misalignment grooves and anti-misalignment sliders are usually used. First, two L-shaped steel plates are spliced, and the anti-misalignment grooves and anti-misalignment sliders at the two side edges of one L-shaped steel plate are connected with the anti-misalignment sliders and anti-misalignment grooves at the two side edges of the other L-shaped steel plate. The welding bevels at the two side edges of the two L-shaped steel plates are further fitted, and then the fitting parts are welded; however, when two L-shaped steel plates are connected, the two L-shaped steel plates need to be aligned along the length direction so that the anti-misalignment sliders and the misalignment grooves can be connected. Therefore, when connecting two L-shaped steel plates, a space greater than the total length of the two L-shaped steel plates is required, which has certain requirements on the construction space and needs to be improved. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the utility model provides a steel tube concrete column.

[0005] The technical solution of the utility model is as follows:

[0006] A steel tube concrete column comprises a square steel tube and a concrete column, wherein the concrete column is cast and formed in the square steel tube; the square steel tube comprises two L-shaped steel plates with an "L"-shaped cross section, wherein the two long sides of the two L-shaped steel plates are butted against each other, and after being spliced, a square steel tube with an "O"-shaped cross section is formed; two groups of connection structures are arranged between the two L-shaped steel plates, and the two groups of connection structures are respectively arranged between the long sides of the two L-shaped steel plates for connecting the two L-shaped steel plates; the connection structure comprises a connection plate and a connection rod, wherein the connection plate is welded and fixed on one long side of the L-shaped steel plate, and a plurality of connection rods are fixed and welded on a side surface of the connection plate away from the L-shaped steel plate, and the connection rods are evenly arranged along the long side direction of the connection plate; a plurality of connection holes are provided on the other long side of the L-shaped steel plate for inserting the connection rod on another L-shaped steel plate.

[0007] Preferably, a plurality of positioning grooves arranged along the long side direction of the L-shaped steel plate are provided on the side surface of the connecting plate away from the L-shaped steel plate, the cross-section of each positioning groove is semicircular, and one end of each connecting rod connected to the connecting plate is placed in the corresponding positioning groove.

[0008] Preferably, the connecting plates are in the shape of a plurality of short plates evenly distributed along the long sides of the L-shaped steel plate.

[0009] Preferably, one end of the connecting rod extending out of the connecting plate is arranged in a bullet shape, and the bullet-shaped end of the connecting rod is divided into four elastic parts by setting a cross cut, and the elastic parts are inserted into the corresponding connecting holes and abut against the inner wall of the connecting hole.

[0010] Preferably, the elastic portion is arranged obliquely in a direction away from the axis of the connecting rod, and the maximum circumscribed circle diameter of the elastic portion is greater than the diameter of the connecting hole.

[0011] Preferably, longitudinal stiffening ribs are fixedly arranged at equal distances on the inner surfaces of the two L-shaped steel plates.

[0012] The utility model has the following beneficial effects: the utility model sets a connection structure and utilizes the close cooperation of the corresponding connection plate, the connection rod and the positioning groove, so that the two L-shaped steel plates do not need to occupy a large amount of assembly space when splicing; at the same time, through the setting of the elastic part, the connection between the connection rod and the connection hole can be made tighter, thereby enhancing the stability of the overall structure when the two L-shaped steel plates are connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the L-shaped steel plate of the utility model;

[0015] Figure 3 For this utility model Figure 2 A partial enlarged view of the connection structure at point A in the middle.

[0016] The reference numerals in the figure represent:

[0017] 1. Square steel pipe; 11. L-shaped steel plate; 12. Connection structure; 121. Connection plate; 122. Connection rod; 123. Positioning groove; 124. Elastic part; 125. Cross cut; 2. Concrete column; 3. Longitudinal stiffening rib. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figures 1 to 3 A steel tube concrete column comprises a square steel tube 1 and a concrete column 2, wherein the concrete column 2 is cast in the square steel tube 1; the square steel tube 1 comprises two L-shaped steel plates 11 with an L-shaped cross section, wherein the two long sides of the two L-shaped steel plates 11 are butted against each other, and after being spliced, a square steel tube 1 with an "O"-shaped cross section is formed; two sets of connecting structures 12 are arranged between the two L-shaped steel plates 11, and the two sets of connecting structures 12 are respectively arranged between the long sides of the two L-shaped steel plates 11 for connecting the two L-shaped steel plates Plate 11; the connecting structure 12 includes a connecting plate 121 and a connecting rod 122. The connecting plate 121 is welded and fixed on one long side of the L-shaped steel plate 11, and a plurality of connecting rods 122 are fixedly welded on a side of the connecting plate 121 away from the L-shaped steel plate 11, and each connecting rod 122 is evenly arranged along the long side direction of the connecting plate 121; a plurality of connecting holes are opened on the other long side of the L-shaped steel plate 11 for inserting the connecting rod 122 on another L-shaped steel plate 11.

[0020] Furthermore, a plurality of positioning grooves 123 arranged along the long side direction of the L-shaped steel plate 11 are provided on a side surface of the connecting plate 121 away from the L-shaped steel plate 11, and the cross-section of each positioning groove 123 is semicircular, and one end of each connecting rod 122 connected to the connecting plate 121 is placed in the corresponding positioning groove 123.

[0021] Furthermore, the connecting plates 121 are in the shape of a plurality of short plates evenly distributed along the long sides of the L-shaped steel plate 11 .

[0022] Furthermore, one end of the connecting rod 122 extending out of the connecting plate 121 is shaped like a bullet, and the bullet-shaped end of the connecting rod 122 is divided into four elastic parts 124 by setting a cross cut 125. The elastic parts 124 are inserted into the corresponding connecting holes and abut against the inner wall of the connecting holes.

[0023] Furthermore, the elastic portion 124 is inclined in a direction away from the axis of the connecting rod 122, and the maximum circumscribed circle diameter of the elastic portion 124 is larger than the diameter of the connecting hole; the elastic portion 124 of the connecting rod 122 will shrink when squeezed and has an elastic force to expand outward. Therefore, the elastic portion 124 is placed in the connecting hole, and the maximum circumscribed circle diameter of the elastic portion 124 is larger than the diameter of the connecting hole, so that the elastic portion 124 of the connecting rod 122 can be tightly and stably connected to the connecting hole, thereby increasing the connection stability of the overall structure.

[0024] Furthermore, longitudinal stiffening ribs 3 are fixedly arranged at equal distances on the inner surfaces of the two L-shaped steel plates 11; when the two L-shaped steel plates 11 are combined to form the square steel tube 1, the longitudinal stiffening ribs 3 can improve the connection strength between the square steel tube 1 and the concrete column 2, making the overall structure more stable.

[0025] The working principle of this utility model:

[0026] In the present invention, one of the L-shaped steel plates 11 is placed on a horizontal workbench or the ground, so that one side of the L-shaped steel plate 11 is in contact with the horizontal workbench or the ground, and the connecting rods 122 connected to the L-shaped steel plate 11 are located on the side of the vertically arranged L-shaped steel plate 11. At this time, the connecting rods 122 located on the L-shaped steel plate 11 are all vertically arranged; then the other L-shaped steel plate 11 is moved to the top of the L-shaped steel plate 11 that has just been placed, so that the connecting rods 122 that have just been arranged are inserted into the connecting holes one by one. After the two L-shaped steel plates 11 are spliced ​​into a square steel pipe 1, welding is performed along the intersection of the two L-shaped steel plates 11 to pour concrete to form a concrete column 2.

[0027] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A steel tube concrete column, characterized in that: The invention comprises a square steel tube (1) and a concrete column (2), wherein the concrete column (2) is cast and formed in the square steel tube (1); the square steel tube (1) comprises two L-shaped steel plates (11) with an L-shaped cross section, wherein the two long sides of the two L-shaped steel plates (11) are butted against each other, and after being spliced, a square steel tube (1) with an "O"-shaped cross section is formed; two groups of connection structures (12) are provided between the two L-shaped steel plates (11), and the two groups of connection structures (12) are respectively provided between the long sides of the two L-shaped steel plates (11) and are used to connect the two L-shaped steel plates (11); The connection structure (12) comprises a connection plate (121) and a connection rod (122); the connection plate (121) is welded and fixed on one long side of the L-shaped steel plate (11); a plurality of connection rods (122) are welded and fixed on a side of the connection plate (121) away from the L-shaped steel plate (11), and the connection rods (122) are evenly arranged along the long side of the connection plate (121); and a plurality of connection holes are provided on the other long side of the L-shaped steel plate (11) for inserting the connection rod (122) on another L-shaped steel plate (11).

2. A steel tube concrete column according to claim 1, characterized in that: A plurality of positioning grooves (123) arranged along the long side of the L-shaped steel plate (11) are provided on a side surface of the connecting plate (121) away from the L-shaped steel plate (11), each positioning groove (123) having a semicircular cross-section, and one end of each connecting rod (122) connected to the connecting plate (121) is placed in a corresponding positioning groove (123).

3. The steel tube concrete column according to claim 1, characterized in that: The connecting plates (121) are in the form of a plurality of short plates evenly distributed along the long sides of the L-shaped steel plate (11).

4. The steel tube concrete column according to claim 1, characterized in that: One end of the connecting rod (122) extending out of the connecting plate (121) is arranged in a bullet shape, and the bullet-shaped end of the connecting rod (122) is divided into four elastic parts (124) by providing a cross cut (125), and the elastic parts (124) are inserted into the corresponding connecting holes and abut against the inner wall of the connecting hole.

5. The steel tube concrete column according to claim 4, characterized in that: The elastic portion (124) is arranged obliquely in a direction away from the axis of the connecting rod (122), and the maximum circumscribed circle diameter of the elastic portion (124) is greater than the diameter of the connecting hole.

6. The steel tube concrete column according to claim 1, characterized in that: Longitudinal stiffening ribs (3) are fixedly arranged at equal distances on the inner side surfaces of the two L-shaped steel plates (11).

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