Assembled integral type beam-slab integrated frame structure

Abstract

The utility model relates to an assembled integral type beam and slab integrated frame structure. The frame structure comprises prefabricated columns, prefabricated beams and prefabricated beam and slab units. The beam-column joints of the prefabricated columns are joint areas which are connected through vertical steel bars and are not poured with concrete; a node connecting assembly is arranged at the lower part of the node area; the node connecting assembly is of an inverted-T-shaped structure, the precast beam is erected on the node connecting assembly, a U-shaped bracket is arranged on the side wall of the precast beam, a rib beam of the precast beam plate unit is supported on the node connecting assembly or the U-shaped bracket, and a second L-shaped steel plate of the rib beam is welded to the node connecting assembly. And concrete is poured in the node area, the stirrup area of the precast beam and the overhanging stirrup area of the ribbed beam. According to the invention, quick connection of common nodes of the multi-layer prefabricated column, the prefabricated beam and the prefabricated beam plate unit can be realized, and a temporary support is not needed in the connection process.

Description

Technical Field

[0001] The utility model relates to the field of assembled buildings, in particular to an assembled integral beam-slab integrated frame structure. Background Art

[0002] In existing prefabricated reinforced concrete structures, prefabricated columns are usually prefabricated in layers according to the floors, and sleeve grouting and other technologies are used at the beam-column nodes of each floor to achieve on-site connection of the column vertical reinforcement. The column reinforcement connection of the layered prefabrication scheme is costly and difficult. In addition, due to the limitation of the process level, the reliability of the sleeve grouting connection fluctuates greatly, which limits the engineering application of prefabricated concrete structures. At the same time, the integrity of the layered prefabrication scheme is poor. After completing the connection of the prefabricated columns and prefabricated beams, concrete needs to be cast in place to ensure the strength of the nodes before the prefabricated components of the next floor can be installed.

[0003] The beam-column joint is the intersection of many steel bars, with dense steel bars, making construction difficult. The existing prefabrication scheme uses the same direction of the prefabricated beam end protruding steel bars to anchor into the nodes separately, and adopts the left-right avoidance or up-down avoidance method in spatial arrangement. While solving the installation possibility, it increases the number of node steel bars, making the node construction more difficult;

[0004] CN117926914A discloses an assembled integral beam-slab integrated frame structure and an installation method thereof, which solves the above-mentioned problems. However, the scheme only solves the connection relationship between single-layer prefabricated columns and prefabricated beams. There is currently no better solution for the connection method of multi-layer prefabricated columns, prefabricated beams and prefabricated beam-slab units at the nodes. Utility Model Content

[0005] The purpose of the utility model is to provide an assembled integral beam-slab integrated frame structure, which can realize the rapid connection of the common nodes of multi-layer prefabricated columns, prefabricated beams and prefabricated beam-slab units, and the connection process does not require the provision of temporary supports.

[0006] The utility model is realized by the following technical scheme: an assembled integral beam-slab integrated frame structure, characterized in that it comprises a prefabricated column 1, a prefabricated beam 2 and a prefabricated beam-slab unit 3;

[0007] The precast column 1 is a reinforced concrete column structure, and the beam-column node of the precast column 1 is a node area 11 connected by vertical steel bars 12 and not poured with concrete; stirrups 13 enclosed by the vertical steel bars 12 are arranged from top to bottom at the node area 11;

[0008] A node connection assembly 4 is provided at the lower part of the node area 11; the node connection assembly 4 includes a back plate 41, a full-length steel plate 42, a bottom plate 43, a vertical plate 44 and bolts 45, and a plurality of bolts 45 are connected to the two side surfaces of the full-length steel plate 42; the front and rear sides of the full-length steel plate 42 are connected to the back plate 41, and the full-length steel plate 42 is perpendicular to the back plate 41; the bottom plate 43 is connected to the outer side surface of the back plate 41, and the vertical plate 44 is also connected to the middle part of the outer side surface of the back plate 41, and the bottom edge of the back plate is connected to the surface of the bottom plate 43, so that an inverted T-shaped supporting structure is formed between the vertical plate 44 and the bottom plate 43; the full-length steel plate 42 and the back plate 41 are both cast in the concrete of the precast column 1; so that the bottom plate 43 and the vertical plate 44 of the node connection assembly 4 extend to intersect the side wall surface of the precast column 1;

[0009] The node connection assembly 4 is further divided into a node connection assembly 4 arranged transversely and a node connection assembly 4 arranged longitudinally. The horizontal height of the node connection assembly 4 arranged transversely is lower than that of the corresponding node connection assembly 4 arranged longitudinally. The node connection assembly 4 arranged transversely is used to support the precast beam 2, and the node connection assembly 4 arranged longitudinally is used to precast the beam-slab unit 3.

[0010] The precast beam 2 is a rectangular reinforced concrete beam structure, and a beam stirrup 21 extending upward is provided on the beam surface of the precast beam 2; the bottom of the precast beam 2 is provided with a beam bottom reinforcement 22, and an avoidance groove 23 adapted to the vertical plate 44 is provided at the middle position of the bottom of both ends of the precast beam 2; both sides of the bottom of both ends of the precast beam 2 are also provided with an avoidance gap 24, and a first L-shaped steel plate 25 is installed at the avoidance gap 24, and the transverse part of the first L-shaped steel plate 25 is attached to the bottom surface of the precast beam 2 and is welded to the beam bottom reinforcement 22 as a whole;

[0011] A diversion chute 26 is provided at the upper part of both ends of the precast beam 2, extending from the surface of the precast beam 2 to the end surface of the precast beam 2; U-shaped brackets 27 are provided on the front and rear sides of the precast beam 2;

[0012] The prefabricated beam-slab unit 3 is a reinforced concrete structure, which is divided into a flat plate 31 and rib beams 32 extending downwardly provided on the left and right sides of the flat plate 31; a groove 33 is provided on the outer edge of the top surface of the rib beam 32, a rib beam stirrup is provided in the rib beam 32, and the part of the rib beam stirrup extending out of the groove 33 forms an outwardly extending stirrup 34, and a rib beam bottom rib 37 connected to the rib beam stirrup is provided at the bottom of the rib beam 32; cutting notches 35 are also provided on the inner side surface and the bottom surface of the bottom of both ends of the rib beam bottom rib 37, and a second L-shaped steel plate 36 is installed at the cutting notch 35, wherein the transverse part of the second L-shaped steel plate 36 is attached to the bottom surface of the cutting notch 35 and is welded to the rib beam bottom rib 37 as a whole;

[0013] The precast columns 1 are arranged in an array, and a precast beam 2 is installed between any two adjacent precast columns 1. The precast beam 2 is supported on the node connection assembly 4, and the first L-shaped steel plate 25 of the precast beam 2 is welded to the bottom plate 43 and the back plate 41;

[0014] The precast beam unit 3 is installed between the adjacent precast beams 2 on the left and right, the rib beam 32 of the precast beam unit 3 is supported on the node connection assembly 4 or the U-shaped bracket 27, and the second L-shaped steel plate 36 of the rib beam 32 is welded to the bottom plate 43 and the back plate 41;

[0015] The beam stirrups 21 of the precast beam 2 and the extended stirrups 34 of the rib beam 32 are provided with full-length beam surface reinforcements 5, and the beam surface reinforcements 5 pass through the node area 11;

[0016] Concrete is poured in the node area 11 , the area of ​​the beam stirrups 21 of the precast beam 2 , and the area of ​​the extended stirrups 34 of the rib beam 32 .

[0017] Compared with the previous technology, the beneficial effects of the utility model are:

[0018] 1. The setting of node connection components can ensure the reliable transmission of shear force between prefabricated columns and prefabricated beams, and also ensure the reliable transmission of shear force between prefabricated columns and prefabricated beam-slab units. At the same time, it can realize the installation of prefabricated components without the need for temporary supports. While realizing green construction, it can improve the safety and installation efficiency of the structural construction process.

[0019] 2. Prefabrication of multi-layer concrete columns can reduce the number of hangers and significantly improve the installation efficiency of prefabricated structures. Due to the integrated prefabrication, there are also significant advantages in installation accuracy. Since the number of on-site steel bar connections is reduced, the installation cost can be significantly reduced.

[0020] 3. The first L-shaped steel plate is welded to the bottom reinforcement of the beam, and the second L-shaped steel plate is welded to the bottom reinforcement of the rib beam, both of which can ensure the reliable transmission of the tensile force of the steel bars.

[0021] 4. Set diversion chute on precast beam to guide concrete flow into node area. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a prefabricated column;

[0023] Figure 2 This is a structural diagram of a precast beam;

[0024] Figure 3 It is the structural schematic diagram of the precast beam-slab unit;

[0025] Figure 4 This is a perspective view of the precast column;

[0026] Figure 5 A perspective view of the node connection assembly located inside the precast column;

[0027] Figure 6 It is a structural schematic diagram of the connection between the precast beam and the node;

[0028] Figure 7 It is a structural schematic diagram of the connection between the precast beam-slab unit and the node;

[0029] Figure 8 is a schematic diagram of step 1;

[0030] Fig. 9 for Figure 8 Enlarged view of the precast column node;

[0031] Fig.10 is a schematic diagram of step 2;

[0032] Fig.11 for Fig.10 A magnified view of the midpoint;

[0033] Fig.12 is a schematic diagram of step 3;

[0034] Fig.13 for Fig.12 A magnified view of the midpoint;

[0035] Fig.14 This is a schematic diagram of laying out beam reinforcement at the precast beam-slab unit in step 4;

[0036] Fig.15 This is a schematic diagram of laying out beam reinforcement at the precast beam in step 4.

[0037] Description of labels:

[0038] 1-precast column, 11-node area, 12-vertical reinforcement, 121 inclined section, 13-stirrup;

[0039] 2-precast beam, 21-beam stirrups, 22-beam bottom reinforcement, 23-avoidance groove, 24-avoidance gap, 25-first L-shaped steel plate, 26-diversion chute, 27-U-shaped corbel, 28 closed hoop;

[0040] 3-precast beam-slab unit, 31-slab, 32-rib beam, 33-groove, 34-extended stirrup, 35-cut notch, 36-second L-shaped steel plate;

[0041] 4-node connection assembly, -41 back plate, 42 full-length steel plate, 43 bottom plate, 44 vertical plate, 45 bolts;

[0042] 5-Beam gluten. DETAILED DESCRIPTION

[0043] The utility model is described in detail below with reference to the accompanying drawings:

[0044] like Figure 1-7As shown: an assembled integral beam-slab integrated frame structure, comprising a prefabricated column 1, a prefabricated beam 2 and a prefabricated beam-slab unit 3;

[0045] The precast column 1 is a reinforced concrete column structure, and the beam-column node of the precast column 1 is a node area 11 connected by vertical steel bars 12 and not poured with concrete; stirrups 13 enclosed by the vertical steel bars 12 are arranged from top to bottom at the node area 11;

[0046] A node connection assembly 4 is provided at the lower part of the node area 11; the node connection assembly 4 includes a back plate 41, a full-length steel plate 42, a bottom plate 43, a vertical plate 44 and bolts 45, and a plurality of bolts 45 are connected to the two side surfaces of the full-length steel plate 42; the front and rear sides of the full-length steel plate 42 are connected to the back plate 41, and the full-length steel plate 42 is perpendicular to the back plate 41; the bottom plate 43 is connected to the outer side surface of the back plate 41, and the vertical plate 44 is also connected to the middle part of the outer side surface of the back plate 41, and the bottom edge of the back plate is connected to the surface of the bottom plate 43, so that an inverted T-shaped supporting structure is formed between the vertical plate 44 and the bottom plate 43; the full-length steel plate 42 and the back plate 41 are both cast in the concrete of the precast column 1; so that the bottom plate 43 and the vertical plate 44 of the node connection assembly 4 extend to intersect the side wall surface of the precast column 1;

[0047] The node connection assembly 4 is further divided into a node connection assembly 4 arranged transversely and a node connection assembly 4 arranged longitudinally. The horizontal height of the node connection assembly 4 arranged transversely is lower than that of the corresponding node connection assembly 4 arranged longitudinally. The node connection assembly 4 arranged transversely is used to support the precast beam 2, and the node connection assembly 4 arranged longitudinally is used to precast the beam-slab unit 3.

[0048] The precast beam 2 is a rectangular reinforced concrete beam structure, and a beam stirrup 21 extending upward is provided on the beam surface of the precast beam 2; the bottom of the precast beam 2 is provided with a beam bottom reinforcement 22, and an avoidance groove 23 adapted to the vertical plate 44 is provided at the middle position of the bottom of both ends of the precast beam 2; both sides of the bottom of both ends of the precast beam 2 are also provided with an avoidance gap 24, and a first L-shaped steel plate 25 is installed at the avoidance gap 24, and the transverse part of the first L-shaped steel plate 25 is attached to the bottom surface of the precast beam 2 and is welded to the beam bottom reinforcement 22 as a whole;

[0049] A diversion chute 26 is provided at the upper part of both ends of the precast beam 2, extending from the surface of the precast beam 2 to the end surface of the precast beam 2; U-shaped brackets 27 are provided on the front and rear sides of the precast beam 2;

[0050] The prefabricated beam-slab unit 3 is a reinforced concrete structure, which is divided into a flat plate 31 and rib beams 32 extending downwardly provided on the left and right sides of the flat plate 31; a groove 33 is provided on the outer edge of the top surface of the rib beam 32, a rib beam stirrup is provided in the rib beam 32, and the part of the rib beam stirrup extending out of the groove 33 forms an outwardly extending stirrup 34, and a rib beam bottom rib 37 connected to the rib beam stirrup is provided at the bottom of the rib beam 32; cutting notches 35 are also provided on the inner side surface and the bottom surface of the bottom of both ends of the rib beam bottom rib 37, and a second L-shaped steel plate 36 is installed at the cutting notch 35, wherein the transverse part of the second L-shaped steel plate 36 is attached to the bottom surface of the cutting notch 35 and is welded to the rib beam bottom rib 37 as a whole;

[0051] The precast columns 1 are arranged in an array, and a precast beam 2 is installed between any two adjacent precast columns 1. The precast beam 2 is supported on the node connection assembly 4, and the first L-shaped steel plate 25 of the precast beam 2 is welded to the bottom plate 43 and the back plate 41;

[0052] The precast beam unit 3 is installed between the adjacent precast beams 2 on the left and right, the rib beam 32 of the precast beam unit 3 is supported on the node connection assembly 4 or the U-shaped bracket 27, and the second L-shaped steel plate 36 of the rib beam 32 is welded to the bottom plate 43 and the back plate 41;

[0053] The beam stirrups 21 of the precast beam 2 and the extended stirrups 34 of the rib beam 32 are provided with full-length beam surface reinforcements 5, and the beam surface reinforcements 5 pass through the node area 11;

[0054] Concrete is poured in the node area 11 , the area of ​​the beam stirrups 21 of the precast beam 2 , and the area of ​​the extended stirrups 34 of the rib beam 32 .

[0055] In this solution, a node area 11 without concrete is also set on the precast column 1. A node connection component 4 is provided at the bottom of the node area 11 to support the precast beam 2 and the precast beam plate unit 3. Here, the node connection component 4 extends out of the side wall of the precast column to form an inverted T-shaped supporting structure. The precast beam 2 is supported on the inverted T-shaped supporting structure. Correspondingly, an avoidance groove 23 adapted to the vertical plate 44 is provided at the middle position of the bottom of both ends of the precast beam 2. It should be noted that the avoidance groove 23 will not affect the height of the connection of the precast beam 2, ensuring the strength of the connection of the precast beam. The first L-shaped steel plate 25 provided on the corresponding precast beam 2 is welded to the beam bottom reinforcement 22 and the node connection component 4 at the same time, ensuring the transmission of shear force at the node and tension force at the beam bottom.

[0056] The front and rear sides of the precast beam 2 are provided with U-shaped brackets 27 for supporting the rib beams of the precast beam-slab unit 3 .

[0057] Based on the above principle, a second L-shaped steel plate 36 is also provided at the end of the precast beam-slab unit 3, and the second L-shaped steel plate 36 is welded to the rib bottom reinforcement 37 and the node connection assembly 4 at the same time, thereby ensuring the shear force transmission at the node.

[0058] Finally, by setting the beam surface reinforcement 5 passing through the node area 11, the beam surface tension transmission at the node is also achieved.

[0059] The diversion chute 26 provided here can guide the concrete to flow toward the node area 11 .

[0060] Part of the vertical reinforcement 12 of the prefabricated column 1 located in the node area is tilted to form a stiffness reinforcement unit 121, which is used to prevent the prefabricated column from being excessively deformed in the node area during production, transportation and installation.

[0061] Two symmetrical closed hoops 28 are embedded in the diversion chute 26 of the precast beam 2 to ensure the shear resistance of the precast beam.

[0062] A method for installing an assembled integral beam-slab integrated frame structure comprises the following steps:

[0063] Step 1: Install the prefabricated column 1 array at the designated location (such as Figure 8 , 9 shown);

[0064] Step 2, hoist the precast beam 2 so that the end of the precast beam 2 is supported on the node connection component 4; wherein the avoidance groove 23 of the precast beam 2 is inserted into the vertical plate 44 of the node connection component 4, and the first L-shaped steel plate 25 of the precast beam 2 is welded to the bottom plate 43 and the back plate 41 as a whole (such as Fig.10 , 11 shown);

[0065] Step 3, hoist the precast beam unit 3, so that the end of the rib beam 32 of the precast beam 2 is supported on the node connection component 4 or the U-shaped bracket 27, and the second L-shaped steel plate 36 of the rib beam 32 is welded to the bottom plate 43 and the back plate 41 as a whole (such as Fig.12 , 13 shown);

[0066] Step 4: Arrange the beam surface reinforcement 5 at the beam stirrups 21 of the precast beam 2 and the extended stirrups 34 of the rib beam 32. The beam surface reinforcement 5 passes through the node area 11 (such as Fig.14 , 15 shown);

[0067] Step 5, laying formwork on both sides of the precast beam 2 and around the node area 11, pouring concrete in the node area 11, the area of ​​the beam stirrups 21 of the precast beam 2 and the area of ​​the extended stirrups 34 of the rib beam 32.

[0068] In step 5, the height of the poured concrete is flush with the upper surface of the node area 11, thereby ensuring the axial force transmission of the concrete column.

[0069] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembled integral beam-slab integrated frame structure, characterized in that: It comprises a prefabricated column (1), a prefabricated beam (2) and a prefabricated beam-slab unit (3); The prefabricated column (1) is a reinforced concrete column structure, and the beam-column joint of the prefabricated column (1) is a node area (11) connected by vertical steel bars (12) and not poured with concrete; stirrups (13) are arranged from top to bottom in the node area (11) and enclosed by the vertical steel bars (12); A node connection assembly (4) is provided at the lower part of the node area (11); the node connection assembly (4) comprises a back plate (41), a full-length steel plate (42), a bottom plate (43), a vertical plate (44) and bolts (45); a plurality of bolts (45) are connected to two side surfaces of the full-length steel plate (42); the front and rear sides of the full-length steel plate (42) are connected to the back plate (41), and the full-length steel plate (42) is perpendicular to the back plate (41); the bottom plate (43) is connected to the back plate ( The vertical plate (44) is also connected to the middle of the outer side of the back plate (41), and the bottom edge of the back plate is connected to the surface of the bottom plate (43), so that an inverted T-shaped supporting structure is formed between the vertical plate (44) and the bottom plate (43); the full-length steel plate (42) and the back plate (41) are cast in the concrete of the precast column (1); so that the bottom plate (43) and the vertical plate (44) of the node connection component (4) extend and intersect the side wall surface of the precast column (1); The node connection assembly (4) is further divided into a node connection assembly (4) arranged transversely and a node connection assembly (4) arranged longitudinally. The horizontal height of the node connection assembly (4) arranged transversely is lower than that of the corresponding node connection assembly (4) arranged longitudinally. The node connection assembly (4) arranged transversely is used to support the precast beam (2), and the node connection assembly (4) arranged longitudinally is used to precast the beam-slab unit (3). The precast beam (2) is a rectangular reinforced concrete beam structure, and a beam stirrup (21) extending upward is provided on the beam surface of the precast beam (2); a beam bottom reinforcement (22) is provided at the bottom of the precast beam (2), and an avoidance groove (23) adapted to the vertical plate (44) is provided at the middle position of the bottom of both ends of the precast beam (2); avoidance notches (24) are also provided on both sides of the bottom of both ends of the precast beam (2), and a first L-shaped steel plate (25) is installed at the avoidance notch (24), and the transverse part of the first L-shaped steel plate (25) is attached to the bottom surface of the precast beam (2) and is welded to the beam bottom reinforcement (22) as a whole; A diversion chute (26) is provided at the upper part of both ends of the prefabricated beam (2) and extends from the surface of the prefabricated beam (2) to the end surface of the prefabricated beam (2); and U-shaped brackets (27) are provided on the front and rear sides of the prefabricated beam (2); The prefabricated beam-slab unit (3) is a reinforced concrete structure, which is divided into a flat plate (31) and rib beams (32) extending downwardly provided on the left and right sides of the flat plate (31); a groove (33) is provided on the outer edge of the top surface of the rib beam (32); rib beam stirrups are provided in the rib beam (32), and the part of the rib beam stirrups extending out of the groove (33) forms an outwardly extending stirrup (34); a rib beam bottom rib (37) connected to the rib beam stirrups is provided at the bottom of the rib beam (32); cutting notches (35) are also provided on the inner side surface and the bottom surface of the bottom of both ends of the rib beam bottom rib (37); a second L-shaped steel plate (36) is installed at the cutting notch (35), wherein the transverse part of the second L-shaped steel plate (36) is attached to the bottom surface of the cutting notch (35) and is welded to the rib beam bottom rib (37) as a whole; The prefabricated columns (1) are arranged in an array, and a prefabricated beam (2) is installed between any two adjacent prefabricated columns (1) in front and behind. The prefabricated beam (2) is supported on a node connection assembly (4), and a first L-shaped steel plate (25) of the prefabricated beam (2) is welded to a bottom plate (43) and a back plate (41); The precast beam-slab unit (3) is installed between the left and right adjacent precast beams (2), the rib beam (32) of the precast beam-slab unit (3) is supported on the node connection assembly (4) or the U-shaped bracket (27), and the second L-shaped steel plate (36) of the rib beam (32) is welded to the bottom plate (43) and the back plate (41); A beam surface reinforcement (5) with a full length is provided at the beam stirrups (21) of the precast beam (2) and the extended stirrups (34) of the rib beam (32), and the beam surface reinforcement (5) passes through the node area (11); Concrete is poured in the node area (11), the area of ​​the beam stirrups (21) of the precast beam (2), and the area of ​​the extended stirrups (34) of the rib beam (32).

2. The assembled integral beam-slab integrated frame structure according to claim 1, characterized in that: Part of the vertical steel bars (12) of the prefabricated column (1) located in the node area is inclined to form a stiffness reinforcement unit (121).

3. The assembled integral beam-slab integrated frame structure according to claim 1, characterized in that: Two symmetrical closed hoops (28) are buried in the diversion chute (26) of the prefabricated beam (2).

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