Tenon joint quick-release beam-column connecting device for assembly type steel structure

Abstract

The invention discloses a tenon joint quick-release beam column connecting device for a fabricated steel structure, and belongs to the technical field of prefabricated building structures. The device comprises a prefabricated steel channel beam, a prefabricated steel column, a sleeve, a beam-sleeve connecting piece, a column end limiting barrel and a prefabricated building block. The prefabricated steel column is connected with the sleeve in an inserted mode through the column end limiting barrel, and the prefabricated steel channel beam, the beam-sleeve connecting piece and the sleeve are sequentially inserted and fixed through the prefabricated building block. The rapid positioning and mounting of the beam column can be realized through the building-shaped grooves in all the components, the insertion matching of the rectangular blocks and the grooves and the clamping and limiting of the column end limiting cylinders. And the prefabricated building blocks are embedded into the combined grooves to complete final fixation. Bolts and expanding agents are not needed, the field assembly efficiency is high, lossless disassembly and component reutilization can be achieved, the cost is remarkably reduced, the joint structure is stable, and the bearing and anti-seismic performance is excellent.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building structure technology, and in particular to a mortise and tenon quick-release beam-column connection device for prefabricated steel structures. Background Technology

[0002] With the advancement of housing industrialization, prefabricated buildings, which manufacture housing components using industrial methods and assemble them on construction sites, have become an industry trend. Prefabricated frame structures, due to their advantages such as high rigidity, high load-bearing capacity, good integrity, fast construction speed, and savings in materials and labor, have become one of the key pathways to realizing housing industrialization. The basic idea is to disassemble the frame structure into components such as columns, beams, and floor slabs. After standardized prefabrication in a prefabrication plant, these components are transported to the construction site for installation and connection, ultimately forming the overall frame structure. In this process, the performance of the connection nodes between prefabricated beams and columns directly determines the overall load-bearing capacity and stability of the prefabricated frame structure. Therefore, designing beam-column connection devices that combine good load-bearing performance with convenient construction is crucial.

[0003] Currently, the connection between precast columns and beams in prefabricated steel structures mostly relies on bolts, on-site welding, or the use of bolt expansion agents. These methods have significant drawbacks: 1) Cumbersome construction: Each bolt hole needs to be reinforced with an expansion agent, and the bolts are used in large quantities. They need to be precisely aligned and reinforced one by one, which is a complicated process and seriously affects the construction efficiency.

[0004] 2) Inconvenient disassembly: After the expansion agent cures, it will form a rigid connection between the bolt and the component, making it impossible to disassemble the component without damage. It can only be disassembled by forced destruction, resulting in the component being scrapped.

[0005] 3) High cost: The consumption of a large number of bolts and expansion agents, coupled with the labor and equipment costs of welding construction, significantly increases the total cost of the project.

[0006] In summary, existing beam-column connection methods cannot meet the core requirements of efficient assembly, convenient disassembly, low cost, and high quality in prefabricated buildings. There is an urgent need to design a new connection device to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a mortise and tenon quick-release beam-column connection device for prefabricated steel structures, which solves the problems mentioned in the background art, avoids a large number of bolts and the use of expansion agents, thus achieving convenient installation and disassembly, greatly reducing the difficulty of construction and reducing costs; and also achieves efficient assembly and disassembly of prefabricated buildings, all of which can be quickly assembled on site after being processed in the factory.

[0008] To achieve the above objectives, the present invention provides a mortise and tenon quick-release beam-column connection device for prefabricated steel structures, comprising a prefabricated channel steel beam, a prefabricated steel column, a sleeve, a beam-sleeve connector, a column end limiting sleeve, and prefabricated blocks. The end of the prefabricated steel column is connected to the sleeve by the column end limiting sleeve. The prefabricated channel steel beam, the beam-sleeve connector, and the sleeve are sequentially connected by insertion and all are fixed by the prefabricated blocks.

[0009] Preferably, the sleeve is a three-dimensional frame structure with four sides, and its top has a semi-masonry-shaped through groove on all four sides. On two adjacent sides of the sleeve, there are outwardly protruding rectangular blocks and inwardly recessed rectangular grooves, respectively. On the other two adjacent sides, there are outwardly extending connecting parts. The upper and lower surfaces of the connecting parts are respectively provided with semi-masonry-shaped through grooves and semi-masonry-shaped grooves on the two adjacent sides near the outside. A first groove-shaped groove is provided below the semi-masonry-shaped through grooves and semi-masonry-shaped grooves. A through groove is provided in the middle of the connecting part.

[0010] Preferably, the rectangular blocks and the rectangular slots are distributed at equal intervals in both the horizontal and vertical directions.

[0011] Preferably, a complete masonry groove is formed at corresponding positions on the upper and lower surfaces of the precast channel steel beam.

[0012] Preferably, the beam-sleeve connector is symmetrically provided with a complete masonry groove, a semi-masonry through groove, and a second groove; wherein, the semi-masonry through groove is located at the ends of the upper and lower surfaces of the beam-sleeve connector; and the complete masonry groove is located at the middle of the upper and lower surfaces of the beam-sleeve connector.

[0013] Preferably, the precast steel column includes a first precast steel column and a second precast steel column respectively inserted at the upper and lower ends of the sleeve. The first precast steel column has complete masonry grooves on all four sides. The lower end of the first precast steel column and the upper end of the second precast steel column have circular grooves that match the end of the column end limiting cylinder.

[0014] Preferably, the column end limiting cylinder is disposed inside the sleeve and is a columnar structure with a radially protruding ring in the middle. The protruding ring is engaged with the annular limiting plate inside the sleeve, and its upper and lower ends are respectively inserted into the circular grooves at the ends of the first precast steel column and the second precast steel column for connection and limiting.

[0015] Preferably, the precast block is a trapezoidal block with asymmetrical height on the left and right sides, wherein the height of one end is half the height of the other end.

[0016] Preferably, the precast channel steel beam and the beam-sleeve connector are provided with four of each beam-column joint, which are symmetrically distributed in four horizontal directions on the connection parts of the two adjacent sides of the sleeve after being inserted and connected.

[0017] Preferably, the two precast channel steel beams inserted and connected in the vertical and horizontal directions of each connection part and the beam-sleeve connector are connected by blocks of equal height.

[0018] Therefore, the present invention employs the above-mentioned tenon-and-mortise quick-release beam-column connection device for prefabricated steel structures, and the specific beneficial effects are as follows: (1) Construction efficiency is greatly improved: There is no need to use a large number of bolts and expansion agents. All components are prefabricated in the factory in a standardized manner. On-site assembly is only required by inserting and fixing blocks. The process is simple and convenient, which can greatly shorten the construction time of beam-column joints. (2) Achieve non-destructive disassembly and component reuse: During disassembly, only the precast blocks need to be removed, and each component can be separated in sequence without forced destruction. Core components such as precast channel steel beams, precast steel columns, and sleeves can be reused in multiple projects, reducing the waste of building materials; (3) Significantly reduced costs: On the one hand, it reduces the material costs of consumables such as bolts and expansion agents; on the other hand, it simplifies the construction process and reduces labor and equipment costs. (4) Excellent structural stability: Through the insertion and matching of sleeves, beam-sleeve connectors and rigid fixing of precast blocks, a stable node structure with multiple stress points is formed, and the overall bearing capacity and seismic performance are better than traditional bolt connection nodes.

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the connecting device according to an embodiment of the present invention; Figure 2 This is an exploded structural diagram of the connecting device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the sleeve at the first angle according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the second angle of the sleeve according to an embodiment of the present invention; Figure 5 This is a structural schematic diagram of the sleeve at the third angle according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the prefabricated channel steel beam according to an embodiment of the present invention; Figure 7 This is a structural schematic diagram of the beam-sleeve connector according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the column end limiting cylinder according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the precast blocks according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the equal-height masonry block according to an embodiment of the present invention; Figure Labels 1. Precast channel steel beam; 2. Precast steel column; 3. Sleeve; 4. Beam-sleeve connector; 5. Column end limiting sleeve; 6. Precast block; 7. Rectangular block; 8. Rectangular groove; 9. Connecting part; 10. Semi-masonry through groove; 11. First groove type groove; 12. Through groove; 13. Complete masonry groove; 14. Second groove type groove; 15. First precast steel column; 16. Second precast steel column; 17. Semi-masonry groove; 18. Circular groove; 19. Raised ring; 20. Annular limiting plate; 21. Equal height block. Detailed Implementation

[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "include" or "comprising" mean that the element or object preceding the term covers the element or object listed following the term and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "up," "down," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding that are mature in existing technology. The machinery, parts and equipment all adopt conventional models in existing technology. In addition, the circuit connection adopts conventional connection methods in existing technology, which will not be described in detail here.

[0024] Example like Figures 1-10As shown, this embodiment provides a mortise and tenon quick-release beam-column connection device for prefabricated steel structures, including a precast channel steel beam 1, a precast steel column 2, a sleeve 3, a beam-sleeve connector 4, a column end limiting sleeve 5, and precast blocks 6. All components are prefabricated in a standardized factory and can be directly transported to the site for assembly without secondary processing on site, reducing the complexity of construction operations and providing a foundation for rapid assembly. Specifically, the end of the precast steel column 2 is inserted and connected to the sleeve 3 via the column end limiting sleeve 5; the precast channel steel beam 1 and the beam-sleeve connector 4 are inserted and connected and fixed by the precast blocks 6; the beam-sleeve connector 4 and the sleeve 3 are also inserted and connected and fixed by the precast blocks 6. The precast block 6 is a trapezoidal block with asymmetrical height on the left and right sides. The height of one end is half the height of the other end. The height difference design allows it to be embedded into the combination space of the grooves of each component to form a self-locking effect, preventing the precast block 6 from loosening and falling off under vibration or load. Stable fixation can be achieved without additional fasteners, further simplifying the assembly process.

[0025] The precast steel column 2 includes a first precast steel column 15 and a second precast steel column 16, which are respectively inserted and connected to the upper and lower ends of the sleeve 3. The lower end of the first precast steel column 15 and the upper end of the second precast steel column 16 are both provided with circular grooves 18. The column end limiting cylinder 5 is set inside the sleeve 3 and is a columnar structure with a radially protruding circular ring 19 in the middle. Its protruding circular ring 19 can be engaged with the pre-set annular limiting plate 20 inside the sleeve 3. The upper and lower ends are respectively inserted into the circular grooves 18 of the first precast steel column 15 and the second precast steel column 16. Through this structural cooperation, the radial displacement of the column end limiting cylinder 5 in the sleeve 3 can be precisely limited, ensuring the coaxiality of the precast steel column 2 and the sleeve 3, avoiding node deformation caused by vertical force displacement, and effectively improving the overall stability of the structure.

[0026] The sleeve 3 is a three-dimensional frame structure with four sides. The top of the sleeve 3 has semi-masonry through grooves 10 on all four sides, which can be structurally adapted and connected to the first precast steel column 15. On two adjacent sides of the sleeve 3, there are rectangular blocks 7 protruding outward and rectangular grooves 8 recessed inward, and the rectangular blocks 7 and rectangular grooves 8 are equidistant in the horizontal and vertical directions. This distribution can disperse stress when the sleeve 3 is subjected to horizontal loads through the interlocking action of the rectangular blocks 7 with the surrounding components and the buffering effect of the rectangular grooves 8 on the load, so as to avoid structural damage caused by excessive local stress and enhance the lateral displacement resistance of the sleeve 3. The other two adjacent sides of the sleeve 3 extend outward to form connecting parts 9. The upper and lower surfaces of the connecting parts 9 are respectively provided with semi-masonry through grooves 10 and semi-masonry grooves 17 near the outer adjacent sides. The bottom of the semi-masonry through grooves 10 and semi-masonry grooves 17 are respectively provided with first groove-shaped grooves 11. A through groove 12 is also provided in the middle of the connecting parts 9. The beam-sleeve connector 4 and the sleeve 3 are connected by insertion through the above groove and fixed by the precast block 6. Furthermore, one end of the precast block 6 that is fixed to the sleeve 3 in the lower horizontal direction of the beam-sleeve connector 4 of each side connection part 9 of the sleeve 3 is welded to the semi-masonry through groove 10 on the lower surface of the connection part 9 of the sleeve 3.

[0027] Each of the upper and lower surfaces of the precast channel steel beam 1 has a complete masonry groove 13 at corresponding positions. The beam-sleeve connector 4 is symmetrically equipped with complete masonry grooves 13, semi-masonry through grooves 10, and a second groove 14. The semi-masonry through grooves 10 are located at the ends of the upper and lower surfaces of the beam-sleeve connector 4, while the complete masonry grooves 13 are located in the middle of their upper and lower surfaces. A total of four precast channel steel beams 1 and four beam-sleeve connectors 4 are provided at the beam-column joint, corresponding to the four horizontal directions of the connection portion 9 on two adjacent sides of the sleeve 3. This ensures that the stress on the joint is evenly distributed across the four directions of the components, avoiding localized stress concentration and forming a multi-directional support system, thereby improving the torsional resistance and overall load-bearing capacity of the joint. Specifically, the precast channel steel beams 1 and beam-sleeve connectors 4 connected in the upper and lower horizontal directions of each side connection portion 9 are connected by equal-height masonry blocks 21. The equal-height masonry blocks 21 are trapezoidal blocks with the same height on both sides, and the size and height of these trapezoidal blocks are the same as the higher end of the precast masonry block 6. The precast channel steel beam 1 and the beam-sleeve connector 4, which are inserted and connected in the lower horizontal direction of each side connection part 9, are also connected by precast blocks 6. One end of the precast block 6 is welded to the semi-masonry through groove 10 of the beam-sleeve connector 4.

[0028] During installation, first, take the precast channel steel beam 1 and align the right half of the complete masonry groove 13 on its upper and lower surfaces with the half-masonry through groove 10 at the ends of the upper and lower surfaces of the beam-sleeve connector 4. After ensuring accurate positioning, insert it to form a horizontal connection unit composed of the precast channel steel beam 1 and the beam-sleeve connector 4. A total of four precast channel steel beams 1 and four beam-sleeve connectors 4 are set at the entire beam-column joint, corresponding to the four upper and lower horizontal directions of the connection part 9 on two adjacent sides of the sleeve 3. Equal-height masonry blocks 21 are embedded between the horizontal connection units of the precast channel steel beam 1 and the beam-sleeve connector 4 in the upper and lower horizontal directions of each side connection part 9 to form a stable connection. For the horizontal connection unit in the lower horizontal direction of each side, one end of the precast masonry block 6 is welded to the half-masonry through groove 10 of the beam-sleeve connector 4 to ensure that the precast masonry block 6 will not fall due to gravity and to ensure that the connection point has higher shear resistance and stability. Move these horizontal connecting units to the sleeve 3, aligning the complete masonry groove 13 in the middle of the upper and lower surfaces of the beam-sleeve connector 4 with the semi-masonry through groove 10 on the connecting part 9 on the adjacent side of the sleeve 3. After confirming the alignment, insert the beam-sleeve connector 4 into the sleeve 3 to complete the connection between the horizontal connecting units and the sleeve 3. Weld one end of the precast block 6, which is fixed to the sleeve 3 on the lower horizontal direction of the beam-sleeve connector 4 on each side of the sleeve 3, to the semi-masonry through groove 10 on the lower surface of the connecting part 9 of the sleeve 3. This ensures that the precast block 6 will not fall due to gravity and guarantees that the connection point has higher shear resistance and stability. Next, place the column end limiting cylinder 5 inside the sleeve 3, so that its protruding ring 19 engages with the annular limiting plate 20 inside the sleeve 3 to fix the position of the column end limiting cylinder 5. Next, take the first precast steel column 15, align the circular groove 18 at its lower end with the end of the column end limiting sleeve 5 at the upper end of the sleeve 3, and insert the sleeve 3. At the same time, ensure that the lower half of the complete masonry groove 13 on all four sides of the first precast steel column 15 corresponds to the semi-masonry through groove 10 on all four sides of the top of the sleeve 3. Similarly, take the second precast steel column 16, align the circular groove 18 at its upper end with the end of the column end limiting sleeve 5 at the lower end of the sleeve 3, and insert the sleeve 3 to complete the vertical connection between the precast steel column 2 and the sleeve 3. Finally, embed the precast block 6 into all the aligned groove combinations, using its asymmetrical trapezoidal structure to clamp each connection part and prevent loosening. During disassembly, use a pry bar to gently tap the precast block 6 from the side of the groove to make it come out, then pull the precast channel steel beam 1 horizontally to separate it from the beam-sleeve connector 4, and then pull the beam-sleeve connector 4 horizontally to separate it from the sleeve 3. Finally, the first precast steel column 15 is lifted upwards and the second precast steel column 16 is lowered downwards to separate them from the column end limiting cylinder 5, thereby achieving non-destructive disassembly of all components.

[0029] Therefore, the mortise and tenon quick-release beam-column connection device for prefabricated steel structures described above offers advantages such as high construction efficiency, non-destructive disassembly, low cost, and good structural stability. All components are prefabricated in the factory, requiring only insertion and fixing to the blocks on-site, eliminating the need for bolts and expansion agents, significantly shortening the construction cycle and reducing material and labor costs. The disassembly process does not damage the components, allowing for reuse and reducing resource waste. Simultaneously, the mortise and tenon connection and block locking form a multi-point load-bearing structure with excellent load-bearing capacity and seismic performance.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A mortise and tenon quick-release beam-column connection device for prefabricated steel structures, characterized in that: The application relates to a prefabricated channel steel beam, a prefabricated steel column, a sleeve, a beam-sleeve connecting piece, a column end limiting cylinder and a prefabricated block, the end of the prefabricated steel column is connected with the sleeve through the column end limiting cylinder, the prefabricated channel steel beam, the beam-sleeve connecting piece and the sleeve are sequentially connected through insertion and are fixed through the prefabricated block.

2. The mortise quick-release beam-column connection device for fabricated steel structures according to claim 1, characterized in that: The sleeve is a three-dimensional frame structure with four sides, the top end of the sleeve is provided with a half-brick-shaped through groove, two adjacent sides of the sleeve are respectively provided with a rectangular block and a rectangular groove, the other two adjacent sides are respectively provided with a connecting part extending outward, the upper and lower surfaces of the connecting part are respectively provided with a half-brick-shaped through groove and a half-brick-shaped groove, the first groove-type groove is arranged below the half-brick-shaped through groove and the half-brick-shaped groove, and the through groove is arranged in the middle of the connecting part.

3. The mortise quick release beam-column connection device for fabricated steel structures according to claim 2, characterized in that: The rectangular block and the rectangular groove are distributed in the horizontal and vertical directions.

4. The mortise quick release beam-column connection device for fabricated steel structures of claim 1, wherein: The upper and lower surfaces of the prefabricated channel steel beam are respectively provided with a complete brick-shaped groove.

5. The mortise quick release beam-column connection device for fabricated steel structures of claim 2, wherein: The beam-sleeve connecting piece is symmetrically provided with a complete brick-shaped groove, a half-brick-shaped through groove and a second groove-type groove; the half-brick-shaped through groove is arranged at the upper and lower surface ends of the beam-sleeve connecting piece; and the complete brick-shaped groove is arranged in the middle of the upper and lower surfaces of the beam-sleeve connecting piece.

6. The mortise quick release beam-column connection device for fabricated steel structures of claim 1, wherein: The prefabricated steel column comprises a first prefabricated steel column and a second prefabricated steel column which are respectively inserted into the upper and lower ends of the sleeve, the four sides of the first prefabricated steel column are provided with a complete brick-shaped groove, and the lower end of the first prefabricated steel column and the upper end of the second prefabricated steel column are provided with a circular groove matched with the end of the column end limiting cylinder.

7. The mortise quick release beam-column connection device for fabricated steel structures of claim 6, wherein: The column end limiting cylinder is arranged in the sleeve and is a columnar structure with a radial protruding ring in the middle, the protruding ring is clamped with a ring limiting plate in the sleeve, and the upper and lower ends are respectively inserted into the circular grooves of the first prefabricated steel column and the second prefabricated steel column to be connected and limited.

8. The mortise quick release beam-column connection device for fabricated steel structures of claim 1, wherein: The prefabricated block is a trapezoidal block with asymmetric heights, one end of the block is half the height of the other end.

9. The mortise quick release beam-column connection device for fabricated steel structures of claim 2, wherein: The prefabricated channel steel beam and the beam-sleeve connecting piece are provided with four column-beam joints, and the four column-beam joints are symmetrically arranged in the four horizontal directions of the connecting parts on the two adjacent sides of the sleeve.

10. The mortise quick release beam-column connection device for fabricated steel structures of claim 9, wherein: The prefabricated channel steel beam and the beam-sleeve connecting piece are connected through the equal-height blocks.

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