An assembled building structure

Abstract

The present invention discloses an assembled building structure, which solves the problem of splicing of frame beams and columns in large-scale assembly, ensures the connection quality, and improves the assembly efficiency. The adopted technical solution is as follows: The cross-shaped node structure is located at the center of the "field" shape, the L-shaped node structure is located at the four corners of the "field" shape, the T-shaped node structure is located in the middle of the side of the "field" shape, and crossbeams are connected between the L-shaped node structure and the T-shaped node structure, and between the T-shaped node structure and the cross-shaped node structure; Columns are sleeved at both the upper and lower ends of the column-shaped frame body, and the columns are limited by the support platforms. Column connection nodes are occasionally arranged in the middle of the columns. The outer end faces of the mother node and the child node are fixedly connected to the beam or column to be connected. One side of the floor slab body is provided with a stepped connection end, and a plurality of holes are sequentially arranged along the edge direction on the other three sides. Holes are provided on each stepped surface of the connection end, and the stepped shapes of two adjacent floor slab bodies can be matched and connected to be fixed together.

Description

Technical Field

[0001] An assembled building structure of the present invention belongs to the technical field of steel structure connection. Background Art

[0002] A building assembled from prefabricated components at the construction site is called an assembled building. With the continuous progress and development of modern industrialization, assembled buildings have been popularized and applied. The following problems are currently faced by assembled buildings:

[0003] 1. The problem of beam-column splicing;

[0004] To ensure a weak member at a strong joint in beam-column connection, there is currently a problem that the joint size is large, which has a great impact on subsequent decoration.

[0005] 2. The problem of column splicing;

[0006] For column splicing, bolt connection is currently used on-site. The number of bolts is large, the installation is cumbersome and the workload is large. The positioning requirement is high. For beam-column welding on-site, the weld quality in high-altitude operation is difficult to guarantee, and the workload of personnel is large.

[0007] 3. The problem of connection between slab and beam;

[0008] Currently, for the connection between steel structure slab and beam, stud welding is mainly used. The studs need to be welded on-site or in the factory. The pouring of the floor slab and the tying of steel bars both require on-site construction, with a large workload, high cost and long construction period.

[0009] 4. The problem of connection of wall panels;

[0010] The small strip panels currently used in the market have a large workload and a long installation period.

[0011] 5. The problem of assembly method;

[0012] The existing assembly methods in the market also lead to a large overall installation workload, a long installation period, and uneven construction quality. Summary of the Invention

[0013] The present invention overcomes the deficiencies of the prior art, provides an assembled building structure, solves the problem of frame beam-column splicing in large-scale assembly, ensures the connection quality, improves the assembly efficiency, reduces the weight of a single floor slab on the premise of ensuring quality, facilitates transportation and installation, and reduces the cost.

[0014] To solve the above technical problems, the technical solution adopted by the present invention is as follows: An assembled building structure includes a cross beam, an L-shaped node structure, a T-shaped node structure, a cross-shaped node structure, a column, a column connection node, and a floor slab body. The cross beam, L-shaped node structure, T-shaped node structure, and cross-shaped node structure form a main beam unit in the shape of a Chinese character "tian" (field). The cross-shaped node structure is located at the center of the "tian" character, the L-shaped node structures are located at the four corners of the "tian" character, and the T-shaped node structures are located in the middle of the sides of the "tian" character. Cross beams are connected between the L-shaped node structures and the T-shaped node structures, and between the T-shaped node structures and the cross-shaped node structures. The L-shaped node structure, T-shaped node structure, and cross-shaped node structure all include a square columnar frame body and a connecting seat. Among them, the two connecting seats of the L-shaped node structure are arranged on two adjacent side walls of the columnar frame body, the three connecting seats of the T-shaped node structure are sequentially arranged on three adjacent side walls of the columnar frame body, and the four connecting seats of the cross-shaped node structure are respectively arranged on the four side walls of the columnar frame body. The connecting seat is in a stepped shape distributed downward, and the connecting seat is a frame structure. A connection hole for connecting and fixing with the cross beam is arranged on the connecting seat. The connecting seat is a frame structure with one side open, and the open side of the frame structure is used for screwing the connection bolts on the connection surface. Two support platforms are annularly arranged on the side wall of the columnar frame body. The two support platforms are distributed up and down, and the two support platforms are respectively aligned with the upper and lower ends of the connecting seat.

[0015] Columns are sleeved on the upper and lower ends of the columnar frame body. The columns are limited by the support platforms. Column connection nodes are intermittently arranged on the upper part of the columns. The column connection node includes a mother node, a child node, a plurality of F-shaped buckles, and a plurality of wedge-shaped blocks. The mother node and the child node are embedded and locked together into a whole through a plurality of F-shaped buckles and a plurality of wedge-shaped blocks. The outer end faces of the mother node and the child node are fixedly connected to the beam or column to be connected.

[0016] A plurality of the floor slab bodies are matched and spliced and fixed on the cross beam to form a floor slab connection structure. The floor slab body is in a square plate shape. A stepped connection end is arranged on one side of the floor slab body. A plurality of holes are sequentially arranged along the edge direction on the other three sides. The holes may be counterbore structures. The holes on the other three sides of the floor slab body are fixed to the cross beam through bolts. Holes are arranged on each stepped surface of the connection end. The stepped shapes of two adjacent floor slab bodies can be matched and connected and fixed together.

[0017] The upper end of the mother node is provided with a circular hole-shaped concave platform, and a plurality of mother node circular holes are arranged on the upper side wall. The inner side of the mother node is provided with a mother node groove; the lower end of the child node is provided with a cylindrical boss, and a plurality of child node U-shaped grooves are arranged at the bottom of the cylindrical boss. The inner side of the child node is provided with a child node groove; both the upper and lower ends of the F-shaped buckle are provided with buckle bosses; both ends of the wedge are provided with wedge bosses, and a wedge bolt hole is arranged in the middle; the circular hole-shaped concave platform of the mother node is clamped with the cylindrical boss of the child node, and the F-shaped buckles and the wedges are arranged alternately. The buckle bosses and the wedge bosses at their upper and lower ends are respectively clamped with the mother node groove and the child node groove. The mother node, the child node and the wedge are fixedly connected by a bolt two passing through the mother node circular hole, the child node U-shaped groove and the wedge bolt hole.

[0018] The mother node and the child node are directly welded to the two beams or columns to be connected or welded together through other connecting components.

[0019] The middle part of the F-shaped buckle is provided with a buckle bolt hole. The mother node, the child node and the F-shaped buckle are fixedly connected by a bolt one passing through the mother node circular hole, the child node U-shaped groove and the buckle bolt hole.

[0020] The bolt one is an inner hexagonal socket head cap bolt.

[0021] The bolt two is an external hexagonal bolt.

[0022] The cross beam is a frame structure with an opening on one side. Both ends of the cross beam are provided with end connection seats. The end connection seats are in an inverted stepped shape. The end connection seats are connected with the connection seats in a matching manner. The end connection seats are in a frame structure. The end connection seats are provided with connection through holes for fixedly connecting with the connection seats. And the end connection seats are frame structures with an opening on one side. The opening side of the frame structure is used for screwing the connection bolts on the connection surface.

[0023] The stepped structures of the connection seat and the end connection seat have at least two layers for mutual matching support and fixation.

[0024] The columnar frame body, the connection seat and the support platform are either integrally formed or welded and fixed, and the end connection seat and the cross beam are integrally formed.

[0025] Reinforcing rib plates for strengthening the structure are arranged inside the frame structure of the end connection seat.

[0026] The beneficial effects of the present invention compared with the prior art are as follows: The present invention uses the connection seats on the beam ends to match and support the various node structures to form the main beam structure unit. The upper and lower ends of the columnar frame of the node structure are used to insert the corresponding columns, and the stepped structure connection is more accurate and firm, providing a solution to the problem of splicing the frame beams and columns in large-scale assembly, ensuring the connection quality, improving the assembly efficiency, paving the main beam structure, laying two floor slab bodies in the frame of each main beam structure, and the connection surfaces of the two floor slab bodies are lapped with a mutually matching stepped structure and then bolted. The other three sides are bolted to the cross beam of the main beam structure. On the premise of ensuring the quality, the weight of a single floor slab is reduced, which is convenient for transportation and installation, and the cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the drawings.

[0028] Figure 1 It is a schematic structural diagram of the present invention.

[0029] Figure 2 It is a side view of the present invention.

[0030] Figure 3 It is a schematic structural diagram of the main body frame in the present invention.

[0031] Figure 4 It is a three-dimensional schematic diagram of the main beam unit in the present invention.

[0032] Figure 5 It is a three-dimensional schematic diagram of the cross beam in the present invention.

[0033] Figure 6 It is a three-dimensional schematic diagram of the L-shaped node structure in the present invention.

[0034] Figure 7 It is a three-dimensional schematic diagram of the T-shaped node structure in the present invention.

[0035] Figure 8 It is a three-dimensional schematic diagram of the cross-shaped node structure in the present invention.

[0036] Figure 9 It is a split structural schematic diagram of the column connection node in the present invention.

[0037] Figure 10 It is a sectional structural schematic diagram of the column connection node in the present invention.

[0038] Figure 11 It is a top view structural schematic diagram of the column connection node in the present invention.

[0039] Figure 12 It is a top view sectional structural schematic diagram of the column connection node in the present invention.

[0040] Figure 13 This is a schematic cross-sectional structure diagram of the column connection node in the present invention.

[0041] Figure 14 This is a schematic structure diagram of the F-shaped buckle of the column connection node in the present invention.

[0042] Figure 15 This is a schematic structure diagram of the wedge of the column connection node in the present invention.

[0043] In the figure: 1 is the cross beam, 11 is the column-shaped frame, 12 is the connecting seat, 13 is the connecting hole, 14 is the support platform, 2 is the L-shaped node structure, 21 is the end connecting seat, 23 is the connecting through hole, 24 is the reinforcing rib plate, 3 is the T-shaped node structure, 4 is the cross-shaped node structure, 5 is the column, 6 is the column connection node, 61 is the female node, 6101 is the circular hole-shaped concave platform, 6102 is the circular hole of the female node, 6103 is the groove of the female node, 62 is the F-shaped buckle, 6201 is the buckle boss, 6202 is the buckle bolt hole, 63 is the male node, 6301 is the cylindrical boss, 6302 is the U-shaped groove of the male node, 6303 is the groove of the male node, 64 is the first bolt, 65 is the wedge, 6501 is the wedge boss, 6502 is the wedge bolt hole, 66 is the second bolt, 7 is the floor slab body, 8 is the connecting end, 9 is the hole. Detailed implementation manners

[0044] As Figures 1 to 15As shown in the figure, an assembled building structure of the present invention includes a cross beam 1, an L-shaped node structure 2, a T-shaped node structure 3, a cross-shaped node structure 4, a column 5, a column connection node 6, and a floor slab body 7. The cross beam 1, the L-shaped node structure 2, the T-shaped node structure 3, and the cross-shaped node structure 4 form a main beam unit in the shape of a Chinese character "tian" (field). The cross-shaped node structure 4 is located at the center of the "tian" character, the L-shaped node structures 2 are located at the four corners of the "tian" character, and the T-shaped node structures 3 are located in the middle of the sides of the "tian" character. Cross beams 1 are connected between the L-shaped node structures 2 and the T-shaped node structures 3, and between the T-shaped node structures 3 and the cross-shaped node structures 4. The L-shaped node structure 2, the T-shaped node structure 3, and the cross-shaped node structure 4 all include a square columnar frame body 11 and a connecting seat 12. Among them, the two connecting seats 12 of the L-shaped node structure 2 are arranged on two adjacent side walls of the columnar frame body 11. The three connecting seats 12 of the T-shaped node structure 3 are sequentially arranged on three adjacent side walls of the columnar frame body 11. The four connecting seats 12 of the cross-shaped node structure 4 are respectively arranged on the four side walls of the columnar frame body 11. The connecting seat 12 is in a stepped shape distributed downward, and the connecting seat 12 is a frame structure. A connecting hole 13 for connecting and fixing with the cross beam 1 is arranged on the connecting seat 12. The connecting seat 12 is a frame structure with one side open. The open side of the frame structure is used for screwing the connecting bolts on the connecting surface. Two supporting platforms 14 are annularly arranged on the side wall of the columnar frame body 11. The two supporting platforms 14 are distributed up and down, and the two supporting platforms 14 are respectively aligned with the upper and lower ends of the connecting seat 12;

[0045] Columns 5 are sleeved on the upper and lower ends of the columnar frame body 11. The columns 5 are limited by the supporting platforms 14. Column connection nodes 6 are intermittently arranged on the upper part of the columns 5. The column connection node 6 includes a mother node 61, a sub-node 63, a plurality of F-shaped fasteners 62, and a plurality of inclined wedges 65. The mother node 61 and the sub-node 63 are embedded and locked together as a whole through a plurality of F-shaped fasteners 62 and a plurality of inclined wedges 65. The outer end surfaces of the mother node 61 and the sub-node 63 are fixedly connected to the beam or column to be connected;

[0046] A plurality of the floor slab bodies 7 are matched and spliced and fixed on the cross beam 1 to form a floor slab connection structure. The floor slab body 7 is in a square plate structure. A stepped connection end 8 is arranged on one side of the floor slab body 7. A plurality of holes 9 are sequentially arranged along the edge direction on the other three sides. The holes 9 may be counterbore structures, and the holes 9 on the other three sides of the floor slab body 7 are fixed to the cross beam 1 through bolts. A hole 9 is arranged on each stepped surface of the connection end 8. The stepped shapes of two adjacent floor slab bodies 7 can be matched and connected and fixed together.

[0047] The upper end of the mother node 61 is provided with a circular hole-shaped concave platform 6101, and a plurality of mother node circular holes 6102 are provided on the upper side wall. A mother node groove 6103 is provided inside the mother node 61; the lower end of the child node 63 is provided with a cylindrical boss 6301, and a plurality of child node U-shaped grooves 6302 are provided at the bottom of the cylindrical boss 6301. A child node groove 6303 is provided inside the child node 63; the upper and lower ends of the F-shaped buckle 62 are provided with buckle bosses 6201; both ends of the wedge 65 are provided with wedge bosses 6501, and a wedge bolt hole 6502 is provided in the middle; the circular hole-shaped concave platform 6101 of the mother node 61 is clamped with the cylindrical boss 6301 of the child node 63, and the F-shaped buckles 62 and the wedges 65 are arranged alternately, and the buckle bosses 6201 and the wedge bosses 6501 at their upper and lower ends are respectively clamped with the mother node groove 6103 and the child node groove 6303. The mother node 61, the child node 63 and the wedge 65 are fixedly connected by a second bolt 66 passing through the mother node circular hole 6102, the child node U-shaped groove 6302 and the wedge bolt hole 6502.

[0048] The mother node 61 and the child node 63 are directly welded to the two beams or columns to be connected or welded together through other connecting parts.

[0049] A buckle bolt hole 6202 is provided in the middle of the F-shaped buckle 62, and the mother node 61, the child node 63 and the F-shaped buckle 62 are fixedly connected by a first bolt 64 passing through the mother node circular hole 6102, the child node U-shaped groove 6302 and the buckle bolt hole 6202.

[0050] The first bolt 64 is an internal hexagon socket head cap bolt.

[0051] The second bolt 66 is an external hexagon bolt.

[0052] The cross beam 1 is a frame structure with an opening on one side. End connection seats 21 are provided at both ends of the cross beam 1. The end connection seats 21 are in an inverted stepped shape. The end connection seats 21 are matched and connected with the connection seats 12. The end connection seats 21 are in a frame structure. Connection through holes 23 for connecting and fixing with the connection seats 12 are provided on the end connection seats 21. And the end connection seats 21 are frame structures with an opening on one side. The opening side of the frame structure is used for screwing the connection bolts on the connection surface.

[0053] The stepped structures of the connection seat 12 and the end connection seat 21 have at least two layers for mutual matching support and fixation.

[0054] The cylindrical frame body 11, the connection seat 12 and the support platform 14 are either integrally formed or welded and fixed, and the end connection seat 21 and the cross beam 1 are integrally formed.

[0055] A reinforcing rib plate 24 for strengthening the structure is arranged inside the frame structure of the end connection seat 21.

[0056] In the present invention, the beam end is supported and fixed by matching with the connection seats on each node structure to form a main beam structure unit. The upper and lower ends of the columnar frame of the node structure are used for inserting corresponding columns, and the stepped structure connection is more accurate and firm, providing a solution to the problem of frame beam-column splicing in large-scale assembly, ensuring the connection quality, improving the assembly efficiency. The main beam structure is paved, and two floor slab bodies are laid in the frame body of each main beam structure. The connection surfaces of the two floor slab bodies are lapped by a mutually matching stepped structure and then bolted. The other three sides are bolted to the cross beam of the main beam structure. On the premise of ensuring the quality, the weight of a single floor slab is reduced, which is convenient for transportation and installation and reduces the cost.

[0057] In the present invention, the mother node 61 and the child node 63 are locked and connected into a whole by embedding a plurality of F-shaped buckles 62 and a plurality of inclined wedges 65 into the mother node 61 and the child node 63. In this embodiment, four F-shaped buckles 62 and four inclined wedges 65 can be set. The F-shaped buckles 62 clamp the mother node 61 and the child node 63 into a whole, and an inclined wedge 65 is arranged between every two F-shaped buckles 62 to fasten the mother node 61, the child node 63 and the F-shaped buckles 62 into a whole. When it is necessary to connect two beams or columns, only need to place the connection positioning node of this embodiment between the beams or columns, and fixedly connect the lower end face of the mother node 61 and the upper end face of the child node 63 with the beam or column to be connected.

[0058] In the present invention, a round-hole-shaped concave platform 6101 is provided at the upper end of the mother node 61, a plurality of mother-node round holes 6102 are provided on the upper side wall, and a mother-node groove 6103 is provided inside the mother node 61; a cylindrical boss 6301 is provided at the lower end of the child node 63, a plurality of child-node U-shaped grooves 6302 are provided at the bottom of the cylindrical boss 6301, and a child-node groove 6303 is provided inside the child node 63. The upper and lower ends of the F-shaped buckle 62 are provided with buckle bosses 6201, and a buckle bolt hole 6202 is provided in the middle. Both ends of the wedge 65 are provided with wedge bosses 6501, and a wedge bolt hole 6502 is provided in the middle. The round-hole-shaped concave platform 6101 of the mother node 61 is clamped with the cylindrical boss 6301 of the child node 63, so that the mother node and the child node are positioned in cooperation. The F-shaped buckles 62 and the wedges 65 are arranged alternately, and the buckle bosses 6201 and the wedge bosses 6501 at their upper and lower ends are respectively clamped with the mother-node groove 6103 and the child-node groove 6303. The mother node 61, the child node 63 and the wedge 65 are fixedly connected by a second bolt 66 passing through the mother-node round hole 6102, the child-node U-shaped groove 6302 and the wedge bolt hole 6502; the mother node 61, the child node 63 and the F-shaped buckle 62 are fixedly connected by a first bolt 64 passing through the mother-node round hole 6102, the child-node U-shaped groove 6302 and the buckle bolt hole 6202. The above structural settings enable the connection between the mother node and the child node to be locked by using a wedge and an F-shaped buckle. In combination with the mother-node round hole 6102 and the child-node U-shaped groove 6302 on the side wall, screws and bolt holes are used for positioning and locking, so that the mother node and the child node are firmly connected together.

[0059] The first bolt 64 can be an internal hexagon socket head cap screw, and the second bolt 66 can be an external hexagon bolt. When it is necessary to assemble the beams or columns to be connected together, only one node of this embodiment needs to be installed between two beams or columns. The mother node 61 and the child node 63 can be directly welded to the two beams or columns to be connected, or the mother node 61 and the child node 63 can be respectively welded to plates or other connecting components according to the different cross-sections of the beams or columns and then welded to the beams or columns together.

[0060] In the specific installation of each component and the specific implementation manner of the steel structure quick connection and positioning node of this embodiment are as follows:

[0061] 1. The F-shaped buckles 62 are respectively placed into the mother node 61 by clamping the buckle bosses 6201 into the mother-node groove 6103;

[0062] 2. An internal hexagon socket head cap screw is passed through the mother-node round hole 6102 on the side of the mother node 61 and screwed into the buckle bolt hole 6202 of the F-shaped buckle 62, and be careful not to tighten it;

[0063] 3. The wedges 65 are respectively placed into the mother node 61 by clamping the wedge bosses 6501 into the mother-node groove 6103;

[0064] 4. Pass an external hexagon bolt through the round hole 6102 of the female node on the side of the female node 61 and screw it into the wedge bolt hole 6502 of the inclined wedge 65. Note not to tighten it.

[0065] 5. Through the positioning snap connection of the round hole-shaped concave platform 6101 of the female node and the cylindrical convex platform of the male node, place the male node 61 into the female node 61, so that the U-shaped groove of the male node is snap-connected to the external hexagon bolt and the internal hexagon socket head bolt.

[0066] 6. Tighten the internal hexagon socket head bolt and the external hexagon bolt respectively, so that the female node 61 and the male node 63 are fastened together by the F-shaped buckle 62 and the inclined wedge 65 through the bolt.

[0067] 7. During construction, when it is necessary to install and assemble the beam or column to be connected, only need to directly weld the upper end face of the female node 61 and the lower end face of the male node 63 to the beam or column to be connected, or weld them to the beam or column through other connecting parts.

[0068] For the quick connection and positioning node of the steel structure in this embodiment, the F-shaped buckle 62 locks the female node 61 and the male node 63 together, and the inclined wedge 65 presses the F-shaped buckle 62 tightly against the female node 61 and the male node 63, changing the original bolt connection between the beam or column into a buckle-type force-bearing connection, optimizing the node connection positioning and force-bearing methods, and at the same time making the operation of the beam or column in the node connection installation simple and time-saving, effectively improving the installation efficiency.

[0069] The above is only the preferred embodiment of the present invention. For those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can still be made, and these should also be regarded as the protection scope of the present invention.

[0070] All the parts used in the present invention can be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. For those specific connection methods of each part that are not described, the mature bolt, rivet, welding and other conventional means in the prior art are adopted. The machines and equipment all adopt the conventional models in the prior art, and the circuit connection of the equipment adopts the conventional connection method in the prior art. Details are not described here. The content not described in detail in this specification belongs to the prior art well-known to those of ordinary skill in the art.

[0071] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features.

[0072] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. An assembled building structure, characterized in that, it includes a cross beam (1), an L-shaped node structure (2), a T-shaped node structure (3), a cross-shaped node structure (4), a column (5), a column connection node (6) and a floor slab body (7). The cross beam (1), the L-shaped node structure (2), the T-shaped node structure (3) and the cross-shaped node structure (4) form a main beam unit in the shape of a Chinese character 'tian' (square). The cross-shaped node structure (4) is located at the center of the 'tian' character, the L-shaped node structures (2) are located at the four corners of the 'tian' character, the T-shaped node structures (3) are located in the middle of the sides of the 'tian' character. Cross beams (1) are connected between the L-shaped node structures (2) and the T-shaped node structures (3), and between the T-shaped node structures (3) and the cross-shaped node structures (4); the L-shaped node structures (2), the T-shaped node structures (3) and the cross-shaped node structures (4) all include a square columnar frame body (11) and a connecting seat (12). Among them, the two connecting seats (12) of the L-shaped node structure (2) are arranged on two adjacent side walls of the columnar frame body (11), the three connecting seats (12) of the T-shaped node structure (3) are sequentially arranged on three adjacent side walls of the columnar frame body (11), the four connecting seats (12) of the cross-shaped node structure (4) are respectively arranged on the four side walls of the columnar frame body (11). The connecting seats (12) are in a stepped shape distributed downward, and the connecting seats (12) are of a frame structure. Connecting holes (13) for connecting and fixing with the cross beam (1) are arranged on the connecting seats (12). The connecting seats (12) are of a frame structure with one side open, and the open side of the frame structure is used for screwing the connecting bolts on the connecting surface. Two support platforms (14) are annularly arranged on the side wall of the columnar frame body (11). The two support platforms (14) are distributed up and down, and the two support platforms (14) are respectively aligned with the upper and lower ends of the connecting seat (12); A plurality of the floor slab bodies (7) are fixedly connected to the cross beam (1) in a matching and splicing manner to form a floor slab connection structure; the floor slab body (7) is in a square plate-like structure, and a stepped connection end (8) is arranged on one side of the floor slab body (7), and a plurality of holes (9) are sequentially arranged along the edge direction on the other three sides. The holes (9) are counterbore structures, and the holes (9) on the other three sides of the floor slab body (7) are fixed to the cross beam (1) by bolts. Holes (9) are arranged on each stepped surface of the connection end (8), and the stepped shapes of two adjacent floor slab bodies (7) can be connected and fixed to each other in a matching manner; the cross beam (1) is a frame structure with an opening on one side, and end connection seats (21) are arranged at both ends of the cross beam (1). The end connection seats (21) are in an inverted stepped shape, and the end connection seats (21) are connected to the connection seats (12) in a matching manner. The end connection seats (21) are in a frame structure, and connection through holes (23) for connecting and fixing to the connection seats (12) are arranged on the end connection seats (21). Moreover, the end connection seats (21) are frame structures with an opening on one side, and the opening side of the frame structure is used for screwing the connection bolts on the connection surface; the stepped structures of the connection seats (12) and the end connection seats (21) have at least two layers for mutual matching support and fixation.

2. An assembled building structure according to claim 1, characterized in that vertical columns (5) are sleeved on the upper and lower ends of the columnar frame body (11). The vertical columns (5) are limited by the support platforms (14), and column connection nodes (6) are arranged on the vertical columns (5). The column connection nodes (6) include a mother node (61), a child node (63), a plurality of F-shaped fasteners (62) and a plurality of inclined wedges (65). The mother node (61) and the child node (63) are embedded and locked into an integral body by the plurality of F-shaped fasteners (62) and the plurality of inclined wedges (65), and the outer end surfaces of the mother node (61) and the child node (63) are fixedly connected to the beam or column to be connected.

3. An assembled building structure according to claim 2, characterized in that The upper end of the mother node (61) is provided with a circular hole-shaped concave platform (6101), and a plurality of mother node circular holes (6102) are provided on the upper side wall. A mother node groove (6103) is provided inside the mother node (61); the lower end of the child node (63) is provided with a cylindrical boss (6301), and a plurality of child node U-shaped grooves (6302) are provided at the bottom of the cylindrical boss (6301). A child node groove (6303) is provided inside the child node (63); the upper and lower ends of the F-shaped buckle (62) are provided with buckle bosses (6201); both ends of the wedge (65) are provided with wedge bosses (6501), and a wedge bolt hole (6502) is provided in the middle; the circular hole-shaped concave platform (6101) of the mother node (61) is clamped with the cylindrical boss (6301) of the child node (63), and the F-shaped buckle (62) and the wedge (65) are arranged alternately. The buckle bosses (6201) and the wedge bosses (6501) at their upper and lower ends are respectively clamped with the mother node groove (6103) and the child node groove (6303). The mother node (61), the child node (63) and the wedge (65) are fixedly connected by a second bolt (66) passing through the mother node circular hole (6102), the child node U-shaped groove (6302) and the wedge bolt hole (6502).

4. The prefabricated building structure according to claim 2, wherein, the mother node (61) and the child node (63) are directly welded to the two beams or columns to be connected or welded together through connecting components.

5. The prefabricated building structure according to claim 2, wherein, a buckle bolt hole (6202) is provided in the middle of the F-shaped buckle (62), and the mother node (61), the child node (63) and the F-shaped buckle (62) are fixedly connected by a first bolt (64) passing through the mother node circular hole (6102), the child node U-shaped groove (6302) and the buckle bolt hole (6202).

6. The prefabricated building structure according to claim 5, wherein, the first bolt (64) is an internal hexagonal socket head cap bolt.

7. The prefabricated building structure according to claim 3, wherein, the second bolt (66) is an external hexagonal bolt.

8. The prefabricated building structure according to claim 1, wherein, the column-shaped frame body (11), the connecting seat (12) and the support platform (14) are either integrally formed or welded and fixed, and the end connecting seat (21) and the cross beam (1) are integrally formed.

9. The prefabricated building structure according to claim 1, wherein, a reinforcing rib plate (24) for strengthening the structure is arranged inside the frame-shaped structure of the end connecting seat (21).

Images