A mortise quick-release beam-column connecting device for fabricated steel structure

Abstract

The application discloses a mortise quick-release beam-column connecting device for fabricated steel structures and belongs to the technical field of prefabricated building structures. The device comprises a prefabricated channel steel beam, a prefabricated steel column, a sleeve, a beam-sleeve connecting piece, a column end limiting cylinder and prefabricated blocks. The prefabricated steel column is connected with the sleeve through the column end limiting cylinder, and the prefabricated channel steel beam, the beam-sleeve connecting piece and the sleeve are sequentially inserted and fixed through the prefabricated blocks. The quick positioning and installation of the beam column can be realized through the insertion and cooperation of the building-shaped grooves, rectangular blocks and grooves on the components and the clamping and limiting of the column end limiting cylinder. The final fixation is completed by embedding the prefabricated blocks into the combined grooves. The device does not need bolts and expanding agents, has high on-site assembly efficiency, can realize lossless disassembly and component reuse, significantly reduces the cost, and has stable node structure, excellent bearing capacity and excellent anti-seismic performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of prefabricated building structures, and in particular to a mortise quick-release beam-column connecting device for fabricated steel structures. BACKGROUND

[0002] With the promotion of residential industrialization, the fabricated building produced in an industrialized manner and assembled on the construction site has become the development trend of the industry. The fabricated frame structure has the advantages of large rigidity, high bearing capacity, good integrity, fast construction speed, and saving of materials and labor, and has become one of the key ways to realize residential industrialization. The basic idea is to disassemble the frame structure into columns, beams, floors and other components, complete standardized prefabrication in a prefabricated component factory, transport to the construction site for installation and connection, and finally form a whole frame structure. In this process, the performance of the connecting joint between the prefabricated beam and the prefabricated column directly determines the overall bearing capacity and stability of the fabricated frame structure, therefore, it is crucial to design a beam-column connecting device with good load-bearing performance and convenient construction performance.

[0003] At present, the connection between the prefabricated column and the prefabricated beam in the fabricated steel structure mostly uses a large number of bolt connections, on-site welding or the use of bolt expanders. These methods have significant defects:

[0004] 1) Complicated construction: each bolt hole needs to be injected with an expander for reinforcement, and a large number of bolts are required, which need to be precisely positioned and installed one by one, the process is complex, and it seriously affects the construction efficiency.

[0005] 2) Inconvenient disassembly: the expander solidifies to form a rigid connection between the bolt and the component, making the component unable to be disassembled without damage, and only can be disassembled by forced destruction, causing the component to be scrapped.

[0006] 3) High cost: the consumption of a large number of bolts and expanders, combined with the labor and equipment costs of welding construction, significantly increases the total project cost.

[0007] In summary, the existing beam-column connection method cannot meet the core needs of efficient assembly, convenient disassembly, low cost and high quality of fabricated buildings, and a new type of connecting device needs to be designed to solve the above problems. SUMMARY

[0008] The purpose of the present application is to provide a mortise quick-release beam-column connecting device for fabricated steel structures, which solves the problems raised in the background art, avoids a large number of bolts and the use of expanders, facilitates installation and disassembly, greatly reduces the degree of difficulty of construction, and also reduces costs; and also achieves the efficient speed of assembly and disassembly of fabricated buildings, which can be quickly assembled on site after factory processing.

[0009] In order to achieve the above object, the application provides a mortise quick-release beam-column connecting device for fabricated steel structure, which comprises 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 connected in sequence through insertion and are all fixed through the prefabricated block.

[0010] Preferably, the sleeve is a three-dimensional frame structure containing 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 protruding outward and a rectangular groove recessed inward, and the other two adjacent sides are both 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 near the two adjacent sides, a first groove-shaped groove is formed below the half-brick-shaped through groove and the half-brick-shaped groove, and a through groove is formed in the middle of the connecting part.

[0011] Preferably, the rectangular block and the rectangular groove are distributed in the horizontal and vertical directions at equal distances.

[0012] Preferably, the upper and lower surfaces of the prefabricated channel steel beam are both provided with a complete brick-shaped groove at the corresponding positions.

[0013] Preferably, the beam-sleeve connecting piece is symmetrically provided with a complete brick-shaped groove, a half-brick-shaped through groove and a second groove-shaped groove; the half-brick-shaped through groove is located at the upper and lower end surfaces of the beam-sleeve connecting piece; and the complete brick-shaped groove is located in the middle of the upper and lower surfaces of the beam-sleeve connecting piece.

[0014] Preferably, the prefabricated steel column comprises a first prefabricated steel column and a second prefabricated steel column inserted into the upper and lower ends of the sleeve respectively, the four sides of the first prefabricated steel column are all 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 both provided with a circular groove matched with the end of the column end limiting cylinder.

[0015] Preferably, the column end limiting cylinder is a cylindrical 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 inserted into the circular grooves in the ends of the first prefabricated steel column and the second prefabricated steel column respectively for connection and limiting.

[0016] Preferably, the prefabricated block is a trapezoidal block with asymmetric height, the height of one end is half of the height of the other end.

[0017] Preferably, the prefabricated channel steel beams and the beam-sleeve connectors are provided with four whole beam-column nodes, which are symmetrically distributed in the four horizontal directions of the connecting parts on the two adjacent sides of the sleeve after being inserted and connected.

[0018] Preferably, the prefabricated channel steel beams and the beam-sleeve connectors are connected by equal-height blocks in the two horizontal directions of each connecting part after being inserted and connected.

[0019] Therefore, the present application adopts the above-mentioned tenon fitting quick disassembly beam-column connecting device for fabricated steel structure, which has the following specific advantages:

[0020] (1) The construction efficiency is greatly improved: without using a large number of bolts and expanding agents, all parts are standardized prefabricated in the factory, and only need to be assembled by inserting and fixing blocks on site, which is simple in process and convenient to operate, and can greatly shorten the construction time of beam-column nodes;

[0021] (2) Realize non-destructive disassembly and component reuse: when disassembled, only the prefabricated blocks need to be removed, and then the parts can be separated in turn, without forced destruction operation, and the core components such as prefabricated channel steel beams, prefabricated steel columns and sleeves can be reused in multiple projects, reducing building material waste;

[0022] (3) The cost is significantly reduced: on the one hand, the material cost of consumables such as bolts and expanding agents is reduced, and on the other hand, the construction process is simplified, reducing labor and equipment costs;

[0023] (4) Excellent structural stability: through the insertion and cooperation of the sleeve, beam-sleeve connector and the rigid fixation of the prefabricated block, a stable node structure with multiple force points is formed, and the overall bearing capacity and seismic performance are better than that of the traditional bolt connection node.

[0024] The technical solutions of the present application will be further described in detail below through the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the overall structure schematic diagram of the connecting device of the embodiment of the present application;

[0026] Figure 2 is the exploded structure schematic diagram of the connecting device of the embodiment of the present application;

[0027] Figure 3 is the structure schematic diagram of the first angle of the sleeve of the embodiment of the present application;

[0028] Figure 4 is the structure schematic diagram of the second angle of the sleeve of the embodiment of the present application;

[0029] Figure 5 is the structure schematic diagram of the third angle of the sleeve of the embodiment of the present application;

[0030] Figure 6 is a structural schematic diagram of a prefabricated channel steel beam of an embodiment of the present application;

[0031] Figure 7 is a structural schematic diagram of a beam-sleeve connecting piece of an embodiment of the present application;

[0032] Figure 8 is a structural schematic diagram of a column end limiting sleeve of an embodiment of the present application;

[0033] Figure 9 is a structural schematic diagram of a prefabricated building block of an embodiment of the present application;

[0034] Figure 10 is a structural schematic diagram of an equal-height building block of an embodiment of the present application;

[0035] Reference Signs

[0036] 1, prefabricated channel steel beam; 2, prefabricated steel column; 3, sleeve; 4, beam-sleeve connecting piece; 5, column end limiting sleeve; 6, prefabricated building block; 7, rectangular block; 8, rectangular groove; 9, connecting part; 10, half-laid concave groove; 11, first groove-shaped groove; 12, through groove; 13, complete-laid concave groove; 14, second groove-shaped groove; 15, first prefabricated steel column; 16, second prefabricated steel column; 17, half-laid concave groove; 18, circular groove; 19, convex circular ring; 20, annular limiting plate; 21, equal-height building block. DETAILED DESCRIPTION

[0037] The technical solutions of the present application are further described below by means of the accompanying drawings and embodiments.

[0038] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the common meaning understood by one of ordinary skill in the art to which the present application pertains. The first, second and similar words used in the present application do not represent any order, number or importance, but are only used to distinguish different components. The words such as including or comprising mean that the components or objects appearing before the words cover the components or objects listed after the words and their equivalents, and do not exclude other components or objects. The words such as connected or linked do not limit to physical or mechanical connection, but can include electrical connection, whether direct or indirect. The words such as up, down, left, right, etc. are only used to represent relative positional relationship, which can change accordingly when the absolute position of the described object changes.

[0039] The specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the mechanical, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0040] Embodiment

[0041] As Figures 1-10 shown, the embodiment provides a mortise quick-release beam-column connection device for fabricated steel structure, which comprises a prefabricated channel steel beam 1, a prefabricated steel column 2, a sleeve 3, a beam-sleeve connecting piece 4, a column end limiting cylinder 5 and a prefabricated block 6. All components are standardized prefabricated in the factory and can be directly transported to the site for assembly without secondary processing on site, which can reduce the complex operation of construction links and provide a basis for rapid assembly. Among them, the end of the prefabricated steel column 2 is connected by inserting the column end limiting cylinder 5 and the sleeve 3, the prefabricated channel steel beam 1 and the beam-sleeve connecting piece 4 are connected by inserting and fixed by the prefabricated block 6, and the beam-sleeve connecting piece 4 and the sleeve 3 are also connected by inserting and fixed by the prefabricated block 6. The prefabricated block 6 is a trapezoidal block with asymmetric height, one end of which is half the height of the other end. The height difference design can make it form a self-locking effect after being embedded in the combined space of the grooves of each component, preventing the prefabricated block 6 from loosening and falling under vibration or load. Without additional reinforcing parts, stable fixation can be achieved, further simplifying the assembly process.

[0042] Among them, the prefabricated steel column 2 comprises a first prefabricated steel column 15 and a second prefabricated steel column 16, which are respectively inserted and connected at the upper and lower ends of the sleeve 3. The lower end of the first prefabricated steel column 15 and the upper end of the second prefabricated steel column 16 are both provided with a circular groove 18. The column end limiting cylinder 5 is a cylindrical structure with a radial protruding ring 19 in the middle, which can be clamped with the ring-shaped limiting plate 20 pre-set inside the sleeve 3. The upper and lower ends are inserted into the circular grooves 18 of the first prefabricated steel column 15 and the second prefabricated steel column 16, respectively. Through this structure, the radial displacement of the column end limiting cylinder 5 in the sleeve 3 can be accurately limited, ensuring the coaxiality of the prefabricated steel column 2 and the sleeve 3, avoiding the node deformation caused by the vertical force deviation, and effectively improving the overall stability of the structure.

[0043] The sleeve 3 is a cuboid frame structure with four sides, and a half-laid semi-penetrating groove 10 is formed in the top end of each side, which can be connected with the structure of the first prefabricated steel column 15. Rectangular blocks 7 and rectangular grooves 8 are respectively arranged on two adjacent sides of the sleeve 3, and the rectangular blocks 7 and the rectangular grooves 8 are distributed equidistantly in the horizontal direction and the vertical direction. When the sleeve 3 is subjected to horizontal load, the stress can be dispersed through the bite of the rectangular blocks 7 and the surrounding components and the buffering effect of the rectangular grooves 8 on the load, so as to avoid the damage of the structure caused by excessive local stress and enhance the lateral displacement resistance of the sleeve 3. The other two adjacent sides of the sleeve 3 are extended to form a connecting part 9, and a half-laid semi-penetrating groove 10 and a half-laid groove 17 are respectively formed in the adjacent two sides of the upper and lower surfaces of the connecting part 9. A first groove 11 is formed below the half-laid semi-penetrating groove 10 and the half-laid groove 17, and a through groove 12 is formed in the middle of the connecting part 9. The beam-sleeve connecting piece 4 and the sleeve 3 are connected by inserting the above grooves and are fixed by the prefabricated blocks 6. The end of the prefabricated block 6 of the beam-sleeve connecting piece 4 in the lower horizontal direction of each side of the connecting part 9 of the sleeve 3 is welded to the half-laid semi-penetrating groove 10 of the lower surface of the connecting part 9 of the sleeve 3.

[0044] A complete laid groove 13 is formed in the corresponding position of the upper and lower surfaces of the prefabricated channel steel beam 1. The complete laid groove 13, the half-laid semi-penetrating groove 10 and the second groove 14 are symmetrically arranged on the beam-sleeve connecting piece 4. The half-laid semi-penetrating groove 10 is located at the upper and lower surfaces of the beam-sleeve connecting piece 4, and the complete laid groove 13 is located in the middle of the upper and lower surfaces. Four prefabricated channel steel beams 1 and four beam-sleeve connecting pieces 4 are arranged at the whole beam-column joint, which correspond to the four upper and lower horizontal directions of the connecting part 9 on the two adjacent sides of the sleeve 3, so that the stress of the joint is evenly distributed on the components in four directions, avoiding local stress concentration, and forming a multi-directional support system to improve the torsional performance and overall carrying capacity of the joint. Specifically, the prefabricated channel steel beam 1 and the beam-sleeve connecting piece 4 inserted and connected in the upper and lower horizontal directions of each side of the connecting part 9 are connected by an equal-height block 21. The equal-height block 21 is a trapezoidal block with the same height on the left and right sides, and the size and height of the trapezoidal block are the same as the height of the high end of the prefabricated block 6. The prefabricated channel steel beam 1 and the beam-sleeve connecting piece 4 inserted and connected in the lower horizontal direction of each side of the connecting part 9 are also connected by the prefabricated block 6. One end of the prefabricated block 6 is welded to the half-laid semi-penetrating groove 10 of the beam-sleeve connecting piece 4.

[0045] During installation, first, the prefabricated channel steel beam 1 is taken, and the right half of the complete masonry groove 13 on its upper and lower surfaces is aligned with the half masonry through groove 10 on the end of the beam-sleeve connecting piece 4 upper and lower surfaces, and is inserted after ensuring the accurate position, forming a horizontal connecting unit composed of the prefabricated channel steel beam 1 and the beam-sleeve connecting piece 4. Four prefabricated channel steel beams 1 and four beam-sleeve connecting pieces 4 are arranged at the whole beam-column joint, corresponding to the four upper and lower horizontal directions of the connecting part 9 on the two adjacent sides of the sleeve 3 respectively. The prefabricated channel steel beam 1 and the beam-sleeve connecting piece 4 horizontal connecting unit between the two upper and lower horizontal directions of each side connecting part 9 is embedded with the equal height masonry block 21 to form a stable connection. For the horizontal connecting unit of the lower horizontal direction of each side, one end of the prefabricated masonry block 6 is welded with the half masonry through groove 10 of the beam-sleeve connecting piece 4, ensuring that the prefabricated masonry block 6 will not fall due to gravity and ensuring that the connection point has higher shear capacity and stability. These horizontal connecting units are moved to the side of the sleeve 3, and the complete masonry groove 13 on the middle of the upper and lower surfaces of the beam-sleeve connecting piece 4 is aligned with the half masonry through groove 10 of the connecting part 9 on the adjacent side of the sleeve 3, and after confirming the alignment, the beam-sleeve connecting piece 4 is inserted into the sleeve 3, completing the connection of the horizontal connecting unit with the sleeve 3. The end of the prefabricated masonry block 6 of the beam-sleeve connecting piece 4 of the lower horizontal direction of the connecting part 9 of each side of the sleeve 3 is welded with the half masonry through groove 10 on the lower surface of the connecting part 9 of the sleeve 3, which realizes the fixation of the sleeve 3, and also ensures that the prefabricated masonry block 6 will not fall due to gravity and ensures that the connection point has higher shear capacity and stability. Then, the column end limiting sleeve 5 is put into the sleeve 3, and the protruding circular ring 19 is clamped with the annular limiting plate 20 inside the sleeve 3 to fix the position of the column end limiting sleeve 5. Then, the first prefabricated steel column 15 is taken, and the circular groove 18 at the lower end is aligned with the end of the column end limiting sleeve 5 at the upper end of the sleeve 3, and is inserted into the sleeve 3, while ensuring that the lower half of the complete masonry groove 13 on the four surfaces of the first prefabricated steel column 15 corresponds to the half masonry through groove 10 on the four surfaces of the top end of the sleeve 3. Similarly, the second prefabricated steel column 16 is taken, and the circular groove 18 at the upper end is aligned with the end of the column end limiting sleeve 5 at the lower end of the sleeve 3, and is inserted into the sleeve 3, completing the vertical connection of the prefabricated steel column 2 with the sleeve 3. Finally, the prefabricated masonry block 6 is embedded in all aligned groove combinations, and its asymmetric trapezoidal structure is clamped at each connecting part to prevent loosening. During disassembly, the prefabricated masonry block 6 is tapped from the side of the groove using a crowbar, so that it is pulled out horizontally, and then the prefabricated channel steel beam 1 is pulled out horizontally to separate it from the beam-sleeve connecting piece 4, and then the beam-sleeve connecting piece 4 is pulled out horizontally to separate it from the sleeve 3. Finally, the first prefabricated steel column 15 is lifted upwards and the second prefabricated steel column 16 is lowered downwards to separate them from the column end limiting sleeve 5, so that all components can be disassembled without damage.

[0046] Therefore, the application has the beneficial effects of high construction efficiency, non-destructive disassembly, low cost, good structural stability and the like. All components are prefabricated in the factory, and only need to be inserted and fixed with the blocks on site, without bolts and expanding agent, which greatly shortens the construction period and reduces the material and labor costs. The disassembly process does not damage the components, which can be reused and reduce resource waste. At the same time, through the mortise connection and block locking, a multi-point force structure is formed, which has good bearing capacity and seismic performance.

[0047] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can still be modified or replaced by equivalents, and these modifications or equivalent replacements should not make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present application.

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. The sleeve is a three-dimensional frame structure with four sides, half-brick-shaped through grooves are formed in the four sides of the top end of the sleeve, rectangular blocks and rectangular grooves are arranged on two adjacent sides of the sleeve, respectively protruding outward and recessing inward, and connecting parts extending outward are arranged on the other two adjacent sides, half-brick-shaped through grooves and half-brick-shaped grooves are arranged on the upper and lower surfaces of the connecting parts close to the two adjacent sides, first groove-shaped grooves are formed below the half-brick-shaped through grooves and the half-brick-shaped grooves, and through grooves are formed in the middle of the connecting parts. Complete-brick-shaped grooves, half-brick-shaped through grooves and second groove-shaped grooves are symmetrically arranged on the beam-sleeve connecting piece; the half-brick-shaped through grooves are located at the upper and lower end surfaces of the beam-sleeve connecting piece; and the complete-brick-shaped grooves are located in the middle of the upper and lower surfaces of the beam-sleeve connecting piece. The prefabricated steel column comprises a first prefabricated steel column and a second prefabricated steel column inserted into the upper and lower ends of the sleeve, respectively, complete-brick-shaped grooves are formed in the four sides of the first prefabricated steel column, and circular grooves matched with the end of the column end limiting cylinder are formed in the lower end of the first prefabricated steel column and the upper end of the second prefabricated steel column.

2. The mortise quick-release beam-column connection device for fabricated steel structures of claim 1, wherein: The rectangular blocks and the rectangular grooves are distributed equidistantly in the horizontal and vertical directions.

3. The mortise quick release beam-column connection device for fabricated steel structures according to claim 1, characterized in that: Complete-brick-shaped grooves are formed in the corresponding positions of the upper and lower surfaces of the prefabricated channel steel beam.

4. The mortise quick release beam-column connection device for fabricated steel structures of claim 1, 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 inserted into the circular grooves in the ends of the first prefabricated steel column and the second prefabricated steel column to be connected and limited.

5. 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, the height of one end is half of the height of the other end.

6. The mortise quick release beam-column connection device for fabricated steel structures of claim 2, wherein: Four prefabricated channel steel beams and four beam-sleeve connecting pieces are arranged at the whole beam-column joint, and are symmetrically distributed in the four horizontal directions of the connecting parts on the two adjacent sides of the sleeve after being connected through insertion.

7. The mortise quick release beam-column connection device for fabricated steel structures of claim 6, wherein: The prefabricated channel steel beams and the beam-sleeve connecting pieces in the two horizontal directions of each connecting part after being connected through insertion are connected through equal-height blocks.

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