Fabricated steel column composite structure

Abstract

The invention discloses a fabricated steel column composite structure, and relates to the technical field of building construction, the fabricated steel column composite structure comprises a first steel column and a second steel column, and the close ends of the first steel column and the second steel column are connected through a fabricated member; the assembling component comprises a first seat body and a prismatic table, the first seat body is arranged at the end part of the first steel column, and the upper bottom surface of the prismatic table is mounted at the central position of the first seat body, so that the lower bottom surface of the prismatic table faces the end part of the second steel column; the assembly part further comprises a second seat body arranged at the end of the second steel column, and a plurality of jaw seats are arranged on the second seat body in a divergent mode. When the first steel column and the second steel column are relatively close to each other, the prismatic table enters the containing area defined by the jaw seat, then all the clamp blocks are pushed to slide inwards, the ends of the clamp blocks directly abut against and are locked to the side edges of the prismatic table, axial butt joint and radial mechanical fastening are synchronously completed in the process, and powerful shear-resistant and bending-resistant joints are formed.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a prefabricated steel column composite structure. Background Technology

[0002] Steel-concrete composite structures, due to their high load-bearing capacity, high stiffness, good ductility and seismic performance, and compliance with green environmental protection and resource recycling requirements, have significant advantages in multi-story and high-rise buildings, large-span structures, and prefabricated building systems. This structural form can combine the lateral stiffness, durability, and fire resistance of reinforced concrete columns with the lightweight and high-strength characteristics of steel, effectively reducing component cross-sections and self-weight while improving structural performance, resulting in outstanding comprehensive economic benefits. While traditional cast-in-place composite structures offer strong integrity, on-site casting involves a large workload and a long construction period; prefabricated composite structures, through factory prefabrication and on-site installation, can significantly improve construction efficiency, reduce on-site wet work, and mitigate quality problems such as concrete creep cracking, making them an important development direction.

[0003] In existing prefabricated connection technologies, such as the prefabricated steel-concrete composite column disclosed in patent CN105464289B, a segmented prefabrication, on-site insertion, and adhesive injection connection structure is adopted. In this structure, the steel pipe insertion part of the first column segment is inserted into the steel sleeve of the second column segment to achieve axial connection and load transfer, while the outer longitudinal reinforcement is connected by inserting pre-reserved sections into corresponding steel sleeves. The two are set separately and injected with adhesive independently. Although this structure achieves prefabrication, it completely separates the axial connection (the insertion between the steel pipes) and the radial connection (the connection between the outer reinforcement) of the column segments in terms of structure and construction. This structure leads to redundant assembly nodes, numerous parts, high requirements for processing and assembly precision, and difficulty in ensuring the coordinated working performance of the axial and radial connections under stress and deformation. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a prefabricated steel column combination structure. By designing new assembly components, the structure is not only simple, but also the axial docking and radial mechanical fastening can be completed simultaneously during the assembly process, thereby improving the assembly coordination.

[0005] To address the above problems, the present invention provides the following technical solution: A prefabricated steel column assembly structure includes a first steel column and a second steel column, and the adjacent ends of the first steel column and the second steel column are connected by assembly components. The assembly component includes a first base and a frustum. The first base is disposed at the end of the first steel column, and the upper bottom surface of the frustum is installed at the center of the first base so that the lower bottom surface of the frustum faces the end of the second steel column. The assembly also includes a second base body located at the end of the second steel column. Multiple sets of jaw seats are arranged in a radiating pattern on the second base body. The proximal ends of the multiple sets of jaw seats together enclose a receiving area, and each set of jaw seats is provided with a jaw block whose end can slide into the receiving area. When the first and second steel columns perform similar actions, the frustum can move into the receiving area, and one end of the clamp block slides into the receiving area to abut against and lock the side edge of the frustum.

[0006] As a further aspect of the present invention: the clamp block can be slidably moved to one end of the receiving area and has a tiger's mouth that matches the size of the side edge of the frustum, and the opening depth of the tiger's mouth increases sequentially from top to bottom.

[0007] As a further aspect of the present invention: the other end of the clamp extends into a jaw seat to form an extension portion, and the first seat body is provided with multiple sets of slots in a radiating manner, the same number as the number of clamps, so that when the first steel column and the second steel column perform similar actions, the extension portion is inserted into the slot.

[0008] As a further aspect of the present invention: each card holder is provided with a wedge block with a wedge surface at one end. The top of the clamp block is configured as a step structure so that when the first steel column and the second steel column move in close proximity, the wedge surface of the wedge block can abut against the front edge of the step and form a wedge engagement state, so as to achieve the sliding of the clamp block by relying on the wedge engagement.

[0009] As a further aspect of the present invention: both the jaw seat and the jaw block are provided with a first hole, so that when one end of the jaw block abuts against the side edge of the frustum, the first hole on the jaw seat and the first hole on the jaw block are positioned opposite each other, so that the first fastening bolt can pass through and connect to achieve locking of the jaw block.

[0010] As a further aspect of the present invention: both the extension and the card seat are provided with a second hole, so that when one end of the clamp block abuts against the side edge of the frustum, the second hole on the extension and the second hole on the card seat are positioned opposite each other, so that the second fastening bolt can be inserted and connected.

[0011] As a further aspect of the present invention, a rubber pad is provided on the side edge of the frustum.

[0012] As a further embodiment of the present invention: the frustum is configured as a hexagonal frustum with six side edges.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By cooperating with the frustum and multiple sets of sliding clamps, a high degree of integration in construction and operation of axial and radial connections is achieved. Compared with the problems of poor coordination caused by the separation of axial and radial connections in the prior art, when the first steel column and the second steel column are relatively close, the frustum enters the receiving area surrounded by the clamp seat, and then pushes all the clamps to slide inward, so that their ends directly abut and lock against the side edge of the frustum. This process simultaneously completes the axial docking and radial mechanical fastening, forming a strong shear and bending resistant joint.

[0014] 2. By limiting the opening of the jaws at the end of the clamps with a depth that increases from top to bottom, the gradually deepening jaw design matches the inclined frustum side edges, so that the jaws and the frustum side edges form a large area of ​​tightly fitted contact surface, effectively dispersing contact stress and avoiding local stress concentration, thereby greatly improving the uniformity of force transmission and load-bearing capacity of the node, and enhancing the reliability of the connection.

[0015] 3. By setting up an extension of the clamping block and a corresponding mounting base, the insertion and engagement of the extension and mounting base not only provides a second axial path for resisting pull-out and shearing in addition to the radial clamping frustum of the clamping block, but also enhances the overall stability of the node. At the same time, this insertion structure can play an effective role in pre-positioning and temporary support during assembly, making the entire docking process more stable and controllable, and further simplifying the difficulty of on-site operation.

[0016] 4. By introducing the wedge block and the clamp block step structure, when the two steel columns approach each other, the interaction between the wedge surface and the front edge of the step can automatically and efficiently convert the driving force of the axial movement of the steel column into the locking force of the radial sliding of the clamp block. This simultaneously completes the axial docking and radial mechanical fastening, reducing the reliance on external fastening tools or complex operations, making assembly more labor-saving and faster.

[0017] 5. Tightening the bolts can apply additional preload, further eliminating microscopic gaps between components, ensuring tightness of the connection, effectively resisting loosening that may occur under long-term dynamic loads, and enhancing the long-term stability and maintainability of the joint.

[0018] 6. Rubber gaskets play a role in buffering, pressure equalization, and gap filling during assembly, protecting the surface of components and helping each clamp block to bear force evenly. After the final bolt pre-tightening, their thin-layer design can be highly compressed, which has virtually no impact on the final force transmission performance of rigid metal contact, thereby improving the assembly experience and quality at low cost. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2This is a schematic diagram of the three-dimensional structure of the first steel column in this invention. Figure 1 ; Figure 3 This is a schematic diagram of the three-dimensional structure of the second steel column in this invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the first steel column in this invention. Figure 2 ; Figure 5 This is a schematic diagram of the three-dimensional structure of the clamp block in this invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the first steel column in this invention. Figure 3 .

[0021] In the diagram: 1. First steel column; 2. Second steel column; 3. First base; 4. Frustum; 5. Second base; 6. Jaw seat; 7. Jaw block; 8. Receiving area; 9. Jaw; 10. Card seat; 11. Wedge block; 1101. Wedge surface; 12. Leading edge; 13. First hole; 14. First fastening bolt; 15. Second hole; 16. Rubber gasket. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figures 1-5 As shown, a prefabricated steel column composite structure includes a first steel column 1 and a second steel column 2 serving as connection nodes for the steel frame. One end of the first steel column 1 and the second steel column 2 are assembled using prefabricated components, avoiding the problems of large on-site pouring workload and long construction period. Of course, concrete can be poured into both the inside and outside of the first steel column 1 and the second steel column 2 to ensure the connection node is firm. Regarding the external pouring of the steel pipe column, a mold can be set up around it, and then mixed soil can be poured into the mold cavity. This is existing technology, and will not be elaborated here to avoid cumbersome writing.

[0024] Regarding the connection between the first steel column 1 and the second steel column 2, it can be achieved either through a single assembly component or by connecting the assembly components first and then using conventional fastening bolts. The design of the aforementioned assembly components is described below. The assembly components include: (1) The first base body 3 is installed at one end of the first steel column 1; (2) Frustum 4, which has a small cross-sectional area upper base and a large cross-sectional area lower base. The upper base is fixedly installed at the center of the first base 3. (3) The second base 5 is installed at one end of the second steel column 2 that is close to the first steel column 1; (4) Jaw seat 6, the jaw seat 6 is configured as multiple sets, the multiple sets of jaw seats 6 are arranged in a divergent manner and installed on the second seat body 5, the near ends of the multiple sets of jaw seats 6 together form a receiving area 8, when the first steel column 1 and the second steel column 2 perform similar actions, the bottom surface of the frustum 4 on the first steel column 1 will be inserted into the receiving area 8. (5) Clamping block 7, clamping block 7 is set in multiple groups, and multiple groups of clamping blocks 7 are respectively set in correspondence with various jaw seats 6. The clamping block 7 is installed on the jaw seat 6, and one end of the clamping block 7 can slide into the receiving area 8. When the bottom surface of the frustum 4 on the first steel column 1 is inserted into the receiving area 8, one end of the clamping block 7 can be driven to slide into the receiving area 8 until the clamping block 7 abuts against the side edge of the frustum 4, so as to realize the assembly connection between the first steel column 1 and the second steel column 2.

[0025] Furthermore, to ensure stable contact between the clamp block 7 and the side edges of the frustum 4, a jaw 9 adapted to the size of the side edges of the frustum 4 can be provided at one end of the clamp block 7 that can slide into the receiving area 8. Since the side edges are inclined, [the jaw 9 is designed to accommodate the angled arrangement of the jaws]. Figure 1 As shown in the assembly state, this inclined layout extends outward from the center. Therefore, the opening depth of the jaws 9 is set to increase sequentially from top to bottom. When the clamp 7 abuts against the side edge of the frustum 4, the clamp 7 relies on the tight fit between its jaws 9 and the side edge of the inclined layout. After assembly, the force exerted by the jaws 9 of the clamp 7 on the side edge can be decomposed into axial and radial limiting and locking forces according to the direction of the force. Compared with the existing technology that simply relies on fastening bolts, the assembly method of this application is not only simple in structure and convenient in assembly, but also provides axial and radial limiting and locking for the assembly nodes, resulting in a firm and stable assembly.

[0026] After the frustum 4 is inserted into the receiving area 8, the jaws 9 of the clamp block 7 are driven to abut against the side edge of the frustum 4. In order to ensure that the position of the clamp block 7 is constant in this state, a first hole 13 can be opened on both the jaw seat 6 and the clamp block 7. When the clamp block 7 abuts against the side edge of the frustum 4 at one end, the first hole 13 on the jaw seat 6 and the first hole 13 on the clamp block 7 are opposite each other. At this time, the first fastening bolt 14 can be used to pass through the two sets of first holes 13 to realize the connection between the two, that is, to ensure the stable abutment between the jaws 9 and the side edge.

[0027] During the assembly process described above, it is also necessary to drive the jaws 9 of the clamp block 7 toward the side edge of the frustum 4 until they come into contact. To omit this step and improve assembly efficiency, such as... Figure 4 As shown, this application provides a wedge block 11 with a wedge surface 1101 at one end of each card holder 10, such as... Figure 5 As shown, the top of the clamp 7 is configured with a stepped structure. Figure 1 In the assembled state shown, the wedge surface 1101 of the wedge block 11 is positioned opposite the front edge 12 of the step. When the first steel column 1 and the second steel column 2 move in close proximity, the wedge surface 1101 of the wedge block 11 can abut against the front edge 12 of the step and form a wedge engagement state. Taking the second steel column 2 as a fixed column and the first steel column 1 as a movable column as an example, in the above wedge engagement state, as the first steel column 1 continues to move downward, the wedge surface 1101 can drive the front edge 12 of the step to slide horizontally toward the receiving area 8, until one end of the clamp block 7 slides into the receiving area 8 and abuts against the side edge of the frustum 4. Subsequently, the clamp block 7 can be connected to the jaw seat 6 using the first fastening bolt 14. Compared with the prior art, which requires manual driving of the clamp block 7 to slide toward the receiving area 8, this application can simultaneously complete the sliding of the clamp block 7 during the close proximity movement of the first steel column 1 and the second steel column 2, simplifying the installation steps and improving construction efficiency.

[0028] For the step on the clamp block, the step can be formed by machining, such as... Figure 5 As shown, it can also be integrally formed with the clamp block 7, and this article is not limited to this. At the same time, the setting of the above-mentioned frustum 4 can be selected according to factors such as the actual installation scenario and installation location, and the frustum with a corresponding number of side edges is preferred.

[0029] To further improve the connection strength between the first steel column 1 and the second steel column 2, this application extends the clamp block 7 so that one end can extend out to the clamp seat 6. This end extending out of the clamp block 7 is defined as the extension. Correspondingly, multiple sets of retaining seats 10 are provided on the first base body 3, the same number as the clamp blocks 7, and the multiple sets of retaining seats 10 present the same divergent layout as the multiple sets of clamp blocks 7. When the first steel column 1 and the second steel column 2 perform similar actions, the extension will also be inserted into the retaining seat 10 during the process of the frustum 4 being inserted into the receiving area 8. This insertion design can prevent the first steel column 1 and the second steel column 2 from shifting or rotating, further ensuring assembly accuracy.

[0030] To improve the connection stability between the extension and the card holder 10, a second hole 15 can be provided on both the extension and the card holder 10. When one end of the clamp 7 abuts against the side edge of the frustum 4, the second hole 15 on the extension and the second hole 15 on the card holder 10 are positioned opposite each other, so that the second fastening bolt can be inserted and connected.

[0031] The moment the wedge block 11 violently pushes the clamp block 7 against the side edge of the frustum 4, a huge impact force and a piercing noise are generated, which often damages the anti-corrosion coating on the surface of the component or the precision-machined edges. Therefore, such as Figure 6As shown, the side edges of the frustum 4 in this application are provided with extremely thin rubber pads 16. During assembly, on the one hand, the elastic deformation of the rubber pads 16 absorbs most of the kinetic energy of the collision, transforming the hard-on-hard impact into a soft landing, protecting the components, reducing noise, and improving the assembly working environment. On the other hand, if there are slight tolerances in the machining dimensions and installation positions of the jaws 9 of the multiple clamping blocks 7, they may not be able to contact each side edge of the frustum 4 simultaneously and evenly when clamping. Some clamping blocks 7 may be locked in place, while others have gaps, resulting in uneven force distribution. At this time, because the rubber pads 16 are compressible, they can automatically fill these micron-level gaps. That is, when the wedge is applied, the rubber pads 16 allow all the clamping blocks 7 to move continuously until each rubber pad 16 reaches a substantially the same compression state, ensuring that all the clamping blocks 7 can be synchronously positioned to form a uniform connection contact.

[0032] It should be noted that the added rubber gasket 16 serves as a functional layer, solely addressing the aforementioned impact, tolerance, and pressure equalization issues. During the later stages of the locking action using the first and second fastening bolts, when the bolts apply their final, enormous preload, the thin rubber gasket 16 is extremely compressed, its thickness approaching zero, and is physically squeezed out from the main force-transmitting interface between the web 9 and the side edge. That is, after the entire node is assembled, the first steel column 1 and the second steel column 2 will form a purely metal-to-metal rigid connection, unaffected by the rubber gasket 16.

[0033] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A prefabricated steel column composite structure, characterized in that, It includes a first steel column (1) and a second steel column (2), and the adjacent ends of the first steel column (1) and the second steel column (2) are connected by an assembly component; The assembly component includes a first base (3) and a frustum (4). The first base (3) is located at the end of the first steel column (1), and the upper bottom surface of the frustum (4) is installed at the center of the first base (3) so that the lower bottom surface of the frustum (4) faces the end of the second steel column (2). The assembly also includes a second seat (5) located at the end of the second steel column (2). Multiple sets of jaw seats (6) are arranged in a radiating manner on the second seat (5). The near ends of the multiple sets of jaw seats (6) together form a receiving area (8), and each set of jaw seats (6) is provided with a jaw block (7) whose end can slide into the receiving area (8). When the first steel column (1) and the second steel column (2) perform similar actions, the frustum (4) can be moved into the receiving area (8), and one end of the clamp (7) slides into the receiving area (8) to abut against and lock the side edge of the frustum (4).

2. The prefabricated steel column composite structure according to claim 1, characterized in that, The clamp (7) can slide into the receiving area (8) and has a tiger's mouth (9) that matches the size of the side edge of the frustum (4), and the opening depth of the tiger's mouth (9) increases from top to bottom.

3. The prefabricated steel column composite structure according to claim 1, characterized in that, The other end of the clamp (7) extends out to form a jaw seat (6) to form an extension. The first seat body (3) is provided with multiple sets of card seats (10) in a radiating manner, the same number as the clamp (7), so that when the first steel column (1) and the second steel column (2) perform similar actions, the extension is inserted into the card seat (10).

4. The prefabricated steel column composite structure according to claim 3, characterized in that, Each card holder (10) is provided with a wedge block (11) with a wedge surface (1101) at one end. The top of the clamp block (7) is configured as a step structure so that when the first steel column (1) and the second steel column (2) move in close proximity, the wedge surface (1101) of the wedge block (11) can abut against the front edge (12) of the step and form a wedge engagement state, so as to achieve the sliding of the clamp block (7) by relying on the wedge engagement.

5. A prefabricated steel column composite structure according to any one of claims 1-4, characterized in that, Both the jaw seat (6) and the jaw block (7) are provided with a first hole (13) so that when one end of the jaw block (7) abuts against the side edge of the frustum (4), the first hole (13) on the jaw seat (6) and the first hole (13) on the jaw block (7) are positioned opposite each other so that the first fastening bolt (14) can pass through and connect to achieve locking of the jaw block (7).

6. A prefabricated steel column assembly structure according to claim 3 or 4, characterized in that, The extension and the card holder (10) are both provided with a second hole (15) so that when one end of the clamp (7) abuts against the side edge of the truncated pyramid (4), the second hole (15) on the extension and the second hole (15) on the card holder (10) are positioned opposite each other so that the second fastening bolt can be inserted and connected.

7. A prefabricated steel column composite structure according to any one of claims 1-4, characterized in that, A rubber pad (16) is provided on the side edge of the frustum (4).

8. A prefabricated steel column composite structure according to any one of claims 1-4, characterized in that, The frustum (4) is configured as a hexagonal frustum with six side edges.

Images