Connecting component between concrete filled steel tubular columns

Abstract

The utility model relates to the technical field of construction in the building industry, in particular to a connecting component between concrete filled steel tubular columns, which comprises a first connecting piece, a second connecting piece, a first concrete column and a second concrete column, the first connecting piece is sleeved at the top of the second concrete column, the second connecting piece is sleeved at the bottom of the first concrete column, and the first concrete column is connected with the second concrete column. First lug plates and second lug plates are arranged on the periphery of the first connecting piece and the periphery of the second connecting piece correspondingly and are vertically flush, the two sides of the first lug plates and the two sides of the second lug plates tightly abut against connecting steel plates, and the two sides of the first lug plates and the two sides of the second lug plates are fixed through second high-strength bolts in a threaded mode. The top of the first connecting piece is provided with a groove and a clamping groove, the bottom of the second connecting piece is provided with a protruding plate and a clamping block, the groove and the clamping groove are connected with the protruding plate and the clamping block in a clamped mode, and the flatness of the connecting position of the first connecting piece and the second connecting piece is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction in the building industry, in particular to a connecting component between steel tube concrete columns. Background Art

[0002] Concrete-filled steel tube (CFST) structures have been widely used and researched both domestically and internationally. When subjected to axial loads, the steel tube and concrete interact due to differences in their Poisson's ratios. This interaction constrains the concrete within the steel tube, causing it to enter a confining pressure state, thereby enhancing its load-bearing capacity. Furthermore, the presence of concrete provides a solid support for the outer steel tube, effectively reducing buckling. This mutual support and constraint significantly enhances the load-bearing capacity of the entire structure. Utilizing the advantages of both steel tube and concrete, CFST structures significantly improve mechanical properties such as load-bearing capacity and ductility compared to conventional reinforced concrete structures. However, due to the large volume and weight of the combined steel tube and concrete, and the inconvenience of transporting long prefabricated components, columns of a certain length must be prefabricated and then transported to the construction site for installation. Continuous welding is used between columns. During the welding process, the high temperatures in the heated area generate thermal stresses, which can affect the initial structural equilibrium and stresses of the steel structure. Therefore, a simple and efficient connection method with appropriate strength and rigidity is required. Therefore, the development of a concrete-filled steel tube column-column connection component is crucial. Utility Model Content

[0003] The purpose of the utility model is to provide a connecting member between steel tube concrete columns to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a connecting member between steel tube concrete columns and columns, comprising a first connecting member, a second connecting member, a first concrete column and a second concrete column, a second installation cavity is opened in the middle of one end of the first connecting member, a second ear plate is fixedly installed in the middle of the four sides of the first connecting member, the top of the second concrete column is snap-fitted and installed inside the second installation cavity, a first installation cavity is opened in the middle of one end of the second connecting member, a first ear plate is fixedly installed in the middle of the four sides of the second connecting member, the bottom of the first concrete column is snap-fitted and installed inside the first installation cavity, the first ear plate and the second ear plate are tightly abutted on both sides with connecting steel plates, and the three are threadedly connected by second high-strength bolts.

[0005] The present invention is further configured such that the first concrete column, the second concrete column, the first connecting member, the second connecting member, the first ear plate, and the second ear plate are all standardized prefabricated components in the factory, wherein the first connecting member, the second connecting member, the first ear plate, and the second ear plate are all steel components, and the first connecting member and the second ear plate, as well as the second connecting member and the first ear plate, are all fixed in the factory.

[0006] The present invention is further configured such that the first concrete column, the second concrete column, the first connecting piece and the second connecting piece are all installed in the factory.

[0007] The above technical solution is adopted, in which the first concrete column and the second concrete column are connected and fixed by the first connecting member and the second connecting member, and the two connecting members are fixed by the first ear plate, the second ear plate and the connecting steel plate through the second high-strength bolt thread connection, and the strength, rigidity and stability are better.

[0008] A third threaded through hole is provided on all four sides of the first connecting member, and the third threaded through hole is located in the middle of two adjacent first ear plates. A fourth threaded through hole is provided on all four sides of the second connecting member, and the fourth threaded through hole is located in the middle of two adjacent second ear plates. The first connecting member and the second concrete column are threadedly connected by a first high-strength bolt and a third high-strength bolt respectively.

[0009] By adopting the above technical solution, the first connecting member and the second connecting member are fixedly connected to the first concrete column and the second concrete column respectively by the first high-strength bolt and the third high-strength bolt to prevent falling off.

[0010] The first connecting member and the second connecting member are both cylindrical, the first ear plate and the second ear plate are both rectangular, the first ear plate and the second ear plate are flush in the vertical direction, and the inner walls of the first installation cavity and the inner walls of the second installation cavity are both bonded with rubber pads.

[0011] By adopting the above technical solution, the rubber pad has a buffering and protective effect, which can prevent the concrete column from being squeezed and worn by the inner wall of the installation cavity.

[0012] The length of the connecting steel plate is the sum of the length of the first ear plate, the length of the second ear plate and the distance between the first ear plate and the second ear plate. Both ends of the connecting steel plate are provided with a plurality of fifth threaded through holes.

[0013] The above technical solution is adopted, in which one side of the two connecting steel plates is respectively attached to the two sides of the first ear plate and the second ear plate.

[0014] A plurality of first threaded through holes and second threaded through holes are evenly provided on the first ear plate and the second ear plate, the fifth threaded through hole is arranged corresponding to the first threaded through hole and the second threaded through hole and are threadedly installed with a second high-strength bolt in sequence, and a fastening nut is threadedly installed at the end of the second high-strength bolt.

[0015] With the above technical solution, the tightening nut plays a reinforcing role, thereby enhancing the connection strength between the connecting steel plate and the first ear plate and the second ear plate.

[0016] A groove is provided in the middle of the first connecting member away from the second installation cavity, and a convex plate is fixedly installed in the middle of the second connecting member away from the first installation cavity. The convex plate and the groove are correspondingly arranged and the two are snap-connected.

[0017] With the above technical solution, the top of the first connecting member and the bottom of the second connecting member are connected by engaging with the convex plate through the groove, so that the two are flush in the vertical direction, ensuring the flatness of the connection part between the two.

[0018] The groove is provided with clamping slots around the periphery, and clamping blocks are fixedly installed around the convex plate, and the clamping slots are clamped and connected with the clamping blocks.

[0019] By adopting the above technical solution, the card block is engaged with the card slot to play a limiting role, which can ensure that the first ear plate and the second ear plate are flush, thereby improving installation efficiency.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The groove and the convex plate of the utility model are nested, so that the connection is tightly fitted, and the card slot and the card block play a positioning role, ensuring that the first connecting member and the second connecting member are flush during the installation process, which can speed up the installation speed and ensure the installation effect.

[0022] 2. The first concrete column and the second concrete column are fixed by connecting steel plates and the first ear plates and the second ear plates through high-strength bolt threads on all sides, thereby improving the connection strength, stability and safety.

[0023] 3. The concrete columns and connecting components of the present invention are all prefabricated in the factory and transported to the site for assembly. The connecting components are easy to operate, which greatly improves the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a front cross-sectional structural diagram of the present utility model;

[0026] Figure 3This is a schematic structural diagram of the second connecting member of the present invention;

[0027] Figure 4 This is a schematic structural diagram of the first connecting member of the present utility model;

[0028] Figure 5 This is a schematic diagram of the top structure of the second connecting member of the present invention.

[0029] In the figure: 1. First connecting member; 2. Second connecting member; 3. First concrete column; 4. First high-strength bolt; 5. First ear plate; 6. Connecting steel plate; 7. Second high-strength bolt; 8. Second ear plate; 9. Third high-strength bolt; 10. First mounting cavity; 11. First threaded through hole; 12. Protruding plate; 13. Groove; 14. Second mounting cavity; 15. Second threaded through hole; 16. Block; 17. Third threaded through hole; 18. Slot; 19. Fourth threaded through hole; 20. Fastening nut; 21. Second concrete column; 22. Fifth threaded through hole. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0031] See also Figure 1-5 The utility model provides a connecting member between steel tube concrete columns and columns, including a first connecting member 1, a second connecting member 2, a first concrete column 3 and a second concrete column 21; a second installation cavity 14 is opened in the middle of one end of the first connecting member 1, and a second ear plate 8 is fixedly installed in the middle of the four sides of the first connecting member 1, and the top of the second concrete column 21 is snap-fitted and installed inside the second installation cavity 14; a first installation cavity 10 is opened in the middle of one end of the second connecting member 2, and a first ear plate 5 is fixedly installed in the middle of the four sides of the second connecting member 2, and the bottom of the first concrete column 3 is snap-fitted and installed inside the first installation cavity 10, and the first ear plate 5 and the second ear plate 8 are tightly abutted with a connecting steel plate 6 on both sides and the three are threadedly connected by a second high-strength bolt 7, the first connecting member 1 is sleeved on the top of the second concrete column 21, and the second connecting member 2 is sleeved on the bottom of the first concrete column 3.

[0032] The first connecting member 1 is provided with a third threaded through hole 17 on all four sides, and the third threaded through hole 17 is located in the middle of two adjacent first ear plates 5. The second connecting member 2 is provided with a fourth threaded through hole 19 on all four sides, and the fourth threaded through hole 19 is located in the middle of two adjacent second ear plates 8. The first connecting member 1 and the second concrete column 21 and the second connecting member 2 and the first concrete column 3 are threadedly connected by the first high-strength bolt 4 and the third high-strength bolt 9 respectively. The first connecting member 1 and the second concrete column 21 and the second connecting member 2 and the first concrete column 3 are both threadedly fixed and detachable.

[0033] The first connecting member 1 and the second connecting member 2 are both cylindrical, the first ear plate 5 and the second ear plate 8 are both rectangular, the first ear plate 5 and the second ear plate 8 are flush in the vertical direction, the inner wall of the first installation cavity 10 and the inner wall of the second installation cavity 14 are both bonded with rubber pads, and the thickness of the first ear plate 5 is the same as that of the second ear plate 8.

[0034] The length of the connecting steel plate 6 is the sum of the length of the first ear plate 5, the length of the second ear plate 8 and the distance between the first ear plate 5 and the second ear plate 8. Several fifth threaded through holes 22 are opened at both ends of the connecting steel plate 6, and the first ear plate 5 and the second ear plate 8 are clamped between the two connecting steel plates 6.

[0035] A plurality of first threaded through holes 11 and second threaded through holes 15 are evenly provided on the first ear plate 5 and the second ear plate 8. The fifth threaded through hole 22 is arranged corresponding to the first threaded through hole 11 and the second threaded through hole 15 and are threadedly installed with the second high-strength bolt 7 in sequence. The end of the second high-strength bolt 7 is threadedly installed with a fastening nut 20. The second high-strength bolt 7 and the fastening nut 20 ensure that the connecting steel plate 6 and the first ear plate 5 and the second ear plate 8 are firmly installed and tightly connected.

[0036] A groove 13 is provided in the middle of the end of the first connecting member 1 away from the second installation cavity 14, and a convex plate 12 is fixedly installed in the middle of the end of the second connecting member 2 away from the first installation cavity 10. The convex plate 12 and the groove 13 are correspondingly arranged and the two are snap-connected. The groove 13 and the convex plate 12 are both cylindrical.

[0037] The groove 13 is surrounded by card slots 18 , and the protruding plate 12 is surrounded by fixed blocks 16 . The card slots 18 are engaged with the blocks 16 to ensure that the first ear plate 5 and the second ear plate 8 are flush in the vertical direction.

[0038] Working principle: When the present invention is used, the second installation cavity 14 at the bottom of the first connecting member 1 is first engaged and installed on the top of the second concrete column 21, and the first connecting member 1 is threadedly connected to the second concrete column 21 with the third high-strength bolt 9 for fixing. Then, the first installation cavity 10 at the top of the second connecting member 2 is engaged and installed on the bottom of the first concrete column 3, and the second connecting member 2 and the first concrete column 3 are threadedly connected and fixed with the first high-strength bolt 4. The above operations are prefabricated and installed in the factory. At the connection site, the block 16 and the convex plate 12 at the bottom of the second connecting member 2 are first engaged and installed into the groove 13 and the slot 18 to ensure that the first ear plate 5 and the second ear plate 8 are flush in the vertical direction. Then, the two connecting steel plates 6 are tightly abutted against the two sides of the first ear plate 5 and the second ear plate 8 respectively, and are threadedly fixed with the second high-strength bolt 7. Finally, the fastening nut 20 is threadedly installed at the end of the second high-strength bolt 7 to reinforce it, completing the connection and installation between the first concrete column 3 and the second concrete column 21.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A connecting member between steel tube concrete columns, comprising a first connecting member (1), a second connecting member (2), a first concrete column (3) and a second concrete column (21), characterized in that: A second mounting cavity (14) is provided in the middle of one end of the first connecting member (1), a second ear plate (8) is fixedly installed in the middle of the four sides of the first connecting member (1), the top of the second concrete column (21) is snap-fitted and installed inside the second mounting cavity (14), a first mounting cavity (10) is provided in the middle of one end of the second connecting member (2), a first ear plate (5) is fixedly installed in the middle of the four sides of the second connecting member (2), the bottom of the first concrete column (3) is snap-fitted and installed inside the first mounting cavity (10), the first ear plate (5) and the second ear plate (8) are tightly abutted against a connecting steel plate (6) on both sides, and the three are threadedly connected by a second high-strength bolt (7).

2. The connecting member according to claim 1, wherein: The first connecting member (1) is provided with a third threaded through hole (17) on all four sides, and the third threaded through hole (17) is located in the middle of two adjacent first ear plates (5). The second connecting member (2) is provided with a fourth threaded through hole (19) on all four sides, and the fourth threaded through hole (19) is located in the middle of two adjacent second ear plates (8). The first connecting member (1) and the second concrete column (21) are threadedly connected, as are the second connecting member (2) and the first concrete column (3), respectively, via a first high-strength bolt (4) and a third high-strength bolt (9).

3. The connecting member according to claim 1, wherein: The first connecting member (1) and the second connecting member (2) are both cylindrical, the first ear plate (5) and the second ear plate (8) are both rectangular, the first ear plate (5) and the second ear plate (8) are flush in the vertical direction, and the inner wall of the first installation cavity (10) and the inner wall of the second installation cavity (14) are both bonded with rubber pads.

4. The connecting member according to claim 1, wherein: The length of the connecting steel plate (6) is the sum of the length of the first ear plate (5), the length of the second ear plate (8) and the distance between the first ear plate (5) and the second ear plate (8), and a plurality of fifth threaded through holes (22) are provided at both ends of the connecting steel plate (6).

5. The connecting member according to claim 4, characterized in that: A plurality of first threaded through holes (11) and second threaded through holes (15) are evenly provided on the first ear plate (5) and the second ear plate (8); the fifth threaded through hole (22) is arranged corresponding to the first threaded through hole (11) and the second threaded through hole (15) and is threadedly installed with a second high-strength bolt (7) in sequence; and a fastening nut (20) is threadedly installed at the end of the second high-strength bolt (7).

6. The connecting member according to claim 1, wherein: A groove (13) is provided in the middle of one end of the first connecting member (1) away from the second installation cavity (14), and a convex plate (12) is fixedly installed in the middle of one end of the second connecting member (2) away from the first installation cavity (10), and the convex plate (12) and the groove (13) are correspondingly arranged and the two are snap-fitted and connected.

7. The connecting member according to claim 6, wherein: The groove (13) is provided with a clamping groove (18) on all sides, and the convex plate (12) is fixedly installed with a clamping block (16) on all sides, and the clamping groove (18) is clamped and connected with the clamping block (16).

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