An assembled reinforced concrete structure and connection joints

Abstract

To solve the problem of difficult steel bar avoidance caused by the longitudinal beam steel bars of precast beams extending into precast columns in the prior art, an embodiment of the present invention provides a connection node of an assembled reinforced concrete structure. At least two sides of each side of the precast column of the connection node are respectively connected with precast beams, and the precast beams are fixedly connected to the precast column. The embodiment of the present invention overcomes the problem of difficult steel bar avoidance caused by the longitudinal beam steel bars of precast beams extending into precast columns in the prior art, thereby avoiding the defect that the cross-sections of precast beams and precast columns have to be increased due to steel bar placement problems.

Description

Technical Field

[0001] The present invention relates to a prefabricated reinforced concrete structure and a connection node. Background Art

[0002] For reinforced concrete structures, the common practice for connecting precast concrete beams and columns is as follows: the longitudinal bars of the precast beam extend into the core area of the column through the anchorage plate, the longitudinal bars of the column are concentrated at the corners to make room for the longitudinal bars of the beam and the anchorage plate, and finally, the core area of the beam-column joint is cast with concrete to achieve the connection.

[0003] Reference Figure 6 As shown, in the prior art, two existing precast beams 101 are connected to an existing precast column 102 of a connection node. The longitudinal bars of the two existing precast beams 101 respectively pass through the existing precast column 102 of the connection node horizontally and vertically. There are multiple longitudinal bars of the beam passing through the precast column, and the ends of the longitudinal bars of the beam in the precast column are provided with longitudinal bar anchorage plates 103.

[0004] This connection node has the following obvious deficiencies: the concentration of the longitudinal bars of the precast beam and the precast column in the connection node area is high. The longitudinal bars of the beam extend into the precast column, resulting in difficulty in avoiding the steel bars in the precast column. Then, the concrete of the node is poured, which affects the construction quality. Summary of the Invention

[0005] To solve the problem in the prior art that the longitudinal bars of the precast beam extending into the precast column cause difficulty in avoiding the steel bars in the precast column, a prefabricated reinforced concrete structure and a connection node are provided.

[0006] The present invention is achieved through the following technical solutions:

[0007] In a first aspect, an embodiment of the present invention provides a connection node of a prefabricated reinforced concrete structure. At least two sides of each side of the precast column of the connection node are respectively connected with precast beams, and the precast beams are fixedly connected to the precast column.

[0008] Optionally, the longitudinal bars of the precast beam are respectively fixedly connected to at least two sides of each side of the precast column.

[0009] Optionally, U-shaped grooves are respectively provided on at least two sides of each side of the precast column. The U-shaped grooves are used to fixedly connect the concrete structure at one end of the precast column and the precast beam. A longitudinal bar connecting plate is provided in the U-shaped groove, and the longitudinal bars at one end of each precast beam are connected to the precast column through the longitudinal bar connecting plate.

[0010] Optionally, a cross partition is provided in the precast column. The cross partition in the precast column and the column stirrups of the precast column divide the column into four column longitudinal bar areas, and multiple column longitudinal bars are provided in each column longitudinal bar area.

[0011] Optionally, column side vertical plates are provided on at least two sides of each side of the precast column, and the U-shaped grooves and longitudinal bar connecting plates are both arranged on the column side vertical plates.

[0012] Optionally, a plurality of tension bolts are longitudinally and horizontally arranged in the precast column, and the plurality of tension bolts are welded to the side vertical plate of the precast column.

[0013] Optionally, shear studs are welded on the side vertical plate of the precast column, and the shear studs are arranged staggeredly with the tension bolts.

[0014] Optionally, the cross section of the precast column is a rectangular structure.

[0015] In a second aspect, an embodiment of the present invention provides an assembled reinforced concrete structure including the connection node described above.

[0016] Compared with the prior art, the embodiment of the present invention has the following advantages and beneficial effects:

[0017] For a connection node of an assembled reinforced concrete structure, at least two sides of each side of the precast column of the connection node are respectively connected with precast beams, and the precast beams are fixedly connected with the precast column, overcoming the problem of difficult reinforcement avoidance caused by the beam longitudinal bars of the precast beam extending into the precast column in the prior art, thereby avoiding the defect that the cross sections of the precast beam and the precast column have to be increased due to the problem of steel bar placement.

[0018] By adopting the above connection node, an assembled reinforced concrete structure according to an embodiment of the present invention improves the production efficiency and reduces the in-situ casting of the node and the operation of the grouting sleeve for the column longitudinal bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not limit the embodiments of the present invention. In the drawings:

[0020] Figure 1 It is a connection schematic diagram of the precast column and the precast beam of the connection node.

[0021] Figure 2 It is Figure 1 The structural schematic diagram of the A-A section in.

[0022] Figure 3 It is Figure 1 The structural schematic diagram of the steel member of the A-A section in.

[0023] Figure 4 It is Figure 3 The structural schematic diagram of the B-B section in.

[0024] Figure 5 It is the overall structural schematic diagram of the connection node.

[0025] Figure 6 It is a schematic diagram of the connection between a precast column and a precast beam in an existing connection node.

[0026] Labels in the attached drawings and corresponding component names:

[0027] Among them, 1 - the first precast beam, 2 - the second precast beam, 3 - the third precast beam, 4 - the fourth precast beam, 5 - the precast column, 6 - the longitudinal column reinforcement, 7 - the longitudinal beam reinforcement, 8 - the U-shaped groove, 9 - the longitudinal reinforcement connection plate, 10 - the column side vertical plate, 11 - the cross partition, 12 - the tension anchor bolt, 13 - the stud, 14 - the column stirrup, 15 - the beam stirrup, 16 - the triangular rib plate, 101 - the existing precast beam, 102 - the existing precast column, 103 - the longitudinal reinforcement anchorage plate. Specific embodiments

[0028] To make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with embodiments and the attached drawings. The illustrative embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0029] Embodiment

[0030] To solve the problem in the prior art that the longitudinal beam reinforcement 7 of the precast beam extends into the precast column, resulting in difficult avoidance of the steel bars (longitudinal beam reinforcement and longitudinal column reinforcement) in the precast column, the embodiment of the present invention provides a connection node of an assembled reinforced concrete structure, which is solved by connecting precast beams to at least two sides of each side of the precast column of the connection node, and fixedly connecting the precast beam to the precast column.

[0031] Refer to Figure 1 As shown, in the prior art, the longitudinal column reinforcement of the precast column passes through the precast column, and the longitudinal beam reinforcement of the precast beam also passes through, resulting in a large number of steel bars in the precast column. Therefore, it increases the difficulty of construction grouting at the junction of the precast column and the beam, making it difficult to control the quality.

[0032] The embodiment of the present invention adopts a new precast column structure, changing the practice of the traditional connection node. That is, the longitudinal beam reinforcement of the precast beam does not pass through the precast column, but the longitudinal beam reinforcement of the corresponding side of the precast beam is connected together through the longitudinal reinforcement connection plates on at least two sides of each side outside the precast column.

[0033] Refer to Figures 1-5 As shown, optionally, the longitudinal beam reinforcement of the precast beam is fixedly connected to at least two sides of each side of the precast column.

[0034] Fixing the longitudinal beam reinforcement 7 of the precast beam to at least two sides of each side of the precast column avoids the problem of difficult avoidance of the steel bars in the precast column caused by the longitudinal beam reinforcement 7 passing through the interior of the precast column.

[0035] Optionally, at least two sides of each side of the precast column are respectively provided with U-shaped grooves, and the U-shaped grooves are used for fixedly connecting the precast column with the concrete structure at one end of the precast beam close to the precast column; longitudinal bar connecting plates are arranged in the U-shaped grooves, and the longitudinal bars at one end of each precast beam are connected to the precast column through the longitudinal bar connecting plates.

[0036] The precast column can be connected to the precast beam in the above manner on one side, two sides, or more than two sides. The cross-section of the precast column is a rectangular structure.

[0037] Reference Figures 1-5 As shown in the figure, the four sides of the precast column 5 are respectively connected with the first precast beam 1, the second precast beam 2, the third precast beam 3, and the fourth precast beam 4. U-shaped grooves 8 are respectively arranged on the four sides of the precast column. The concrete structure parts at one end of the first precast beam 1, the second precast beam 2, the third precast beam 3, and the fourth precast beam 4 close to the precast column are respectively fixed through the U-shaped grooves 8; longitudinal bar connecting plates 9 are arranged in the U-shaped grooves, and the beam longitudinal bars at one end of each precast beam close to the precast column are connected to the precast column through the longitudinal bar connecting plates.

[0038] Optionally, beam stirrups 15 are arranged in the U-shaped grooves.

[0039] Optionally, a cross partition is arranged in the precast column. The cross partition in the precast column and the column stirrups of the precast column separate four column longitudinal bar areas, and multiple column longitudinal bars are arranged in each column longitudinal bar area.

[0040] Reference Figure 1 As shown in the figure, the cross partition in the precast column and the column stirrups 14 of the precast column enclose 4 column longitudinal bar areas, and multiple column longitudinal bars 6 pass through each column longitudinal bar area; optionally, there are 3 column longitudinal bars in each column longitudinal bar area, and the 3 column longitudinal bars are distributed at three right angles of the column longitudinal bar area.

[0041] Optionally, a plurality of tension bolts are arranged longitudinally and transversely in the precast column, and the plurality of tension bolts are welded to the side plates of the precast column.

[0042] Reference Figure 1 As shown in the figure, a cross partition 11 is arranged in the precast column 5, and tension bolts 12 are arranged longitudinally and transversely in the precast column 5. The tension bolts 12 are welded to the side plates of the precast column through plug welding with holes.

[0043] Optionally, shear studs are welded on the side plates of the precast column, and the shear studs are arranged staggered with the tension bolts.

[0044] Optionally, there are two cross partitions. The two cross partitions are respectively arranged at both ends of the precast column. Tension bolts 12 are arranged longitudinally and transversely in the part of the precast column between the two cross partitions, and each tension bolt is welded to the side plate of the precast column through plug welding with holes.

[0045] The column stirrups 14 of the precast column are used to hoop the column longitudinal bars inside the precast column.

[0046] Reference Figure 3 As shown Figure 3 All the components in it are made of steel. All the steel component plates are integrally welded by full penetration welding. A triangular gusset plate 16 is provided on the lower side of the cross partition 11.

[0047] Optionally, at least two sides of each side of the precast column are provided with column side vertical plates 10, and the U-shaped grooves and longitudinal bar connecting plates are both arranged on the column side vertical plates 10.

[0048] Optionally, each column side vertical plate 10 of the precast column is welded into a whole by tie rods and upper and lower cross partitions. The reinforced concrete column can be precast in a precast factory in one go for 1 - 3 floors, and then the U-shaped grooves outside the precast column are welded to the column side vertical plates. During on-site construction, the beam longitudinal bars of the precast beam are welded into a whole with the column side vertical plates by welding longitudinal bar connecting plates at the ends. Finally, the cavity part in the U-shaped groove is poured together with the superposed layer of the precast beam and the floor slab concrete (i.e., the concrete structure at one end close to the precast column) to form a structurally sound main body.

[0049] This node method has the following advantages: ① The beam longitudinal bars 7 of the precast beam at the connection node are connected outside the column through the longitudinal bar connecting plates, and the beam longitudinal bars and column longitudinal bars do not interfere with each other, solving the problem of difficult reinforcement avoidance.

[0050] ② The cross-sections of the precast beam and precast column can be designed according to the amount of reinforcement of their respective components. The cross-sections will be smaller than those of the precast beam and column connected by the cast-in-place node, especially when the components are more heavily reinforced.

[0051] ③ The precast column can be precast in multiple layers at the factory at one time, which better ensures the pouring quality of the concrete in the node area. At the same time, the number of precast column components is reduced, the grouting sleeves and their corresponding on-site grouting work are less, and the factory production and on-site hoisting efficiency are higher.

[0052] ④ The cast-in-place nodes between the beam and column are significantly reduced, correspondingly reducing the on-site cast-in-place operations, saving costs and construction time.

[0053] ⑤ The U-shaped supporting plates on the outside of the column can be used as the end supports of the precast beam and the side formwork of the beam end cast-in-place area, saving the beam bottom support.

[0054] In a second aspect, an embodiment of the present invention provides a prefabricated reinforced concrete structure including the connection node.

[0055] The prefabricated reinforced concrete structure of the embodiment of the present invention has obvious industrialization and assembly characteristics, high node bearing capacity, strong adaptability, and shows various conveniences and advantages for building construction.

[0056] The specific embodiments described above further elaborate on the objective, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A connecting node of a prefabricated reinforced concrete structure, characterized in that, Prefabricated columns of the connection node are respectively connected with prefabricated beams on at least two sides of each side, and the prefabricated beams are fixedly connected with the prefabricated columns; U-shaped grooves are respectively arranged on at least two sides of each side of the prefabricated column, and the U-shaped grooves are used for fixedly connecting the concrete structures at one end of the prefabricated column and the prefabricated beam; longitudinal bar connecting plates are arranged in the U-shaped grooves, and the longitudinal bars at one end of each prefabricated beam are connected with the prefabricated column through the longitudinal bar connecting plates; Column side vertical plates are arranged on at least two sides of each side of the prefabricated column, and the U-shaped grooves and the longitudinal bar connecting plates are both arranged on the column side vertical plates; A plurality of tension bolts are arranged vertically and horizontally in the prefabricated column, and the plurality of tension bolts are welded to the side vertical plates of the prefabricated column; Beam stirrups are arranged in the U-shaped grooves.

2. The connection node of the prefabricated reinforced concrete structure according to claim 1, wherein The beam longitudinal bars of the prefabricated beam are respectively fixedly connected with at least two sides of each side of the prefabricated column.

3. The connection node of the prefabricated reinforced concrete structure according to claim 1, wherein A cross partition is arranged in the prefabricated column, and the cross partition in the prefabricated column and the column stirrups of the prefabricated column divide four column longitudinal bar areas, and a plurality of column longitudinal bars are arranged in each column longitudinal bar area.

4. The connection node of the prefabricated reinforced concrete structure according to claim 1, wherein, Shear studs are welded on the side vertical plates of the prefabricated column, and the shear studs and the tension bolts are arranged staggeredly.

5. The connection node of the prefabricated reinforced concrete structure according to any one of claims 1-4, characterized in that, The cross section of the prefabricated column is a rectangular structure.

6. An assembled reinforced concrete structure, characterized in that, Including the connection node according to any one of claims 1-3.

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