Prefabricated column frame, reinforced concrete frame structure and assembly method for assembled buildings

Abstract

The present invention discloses a prefabricated column frame, reinforced concrete frame structure and assembly method for assembled buildings, wherein the prefabricated column frame is assembled on the upper surface of the outer side of the hollow part of the prefabricated reinforced concrete support body, and the prefabricated column frame is connected with a load-bearing column steel bar; the prefabricated column frame is composited with steel wire mesh plate concrete or ribbed steel mesh concrete under the action of a mold, the prefabricated column frame is square, and the outer surface of the prefabricated column frame has three smooth sides; the four corners of the prefabricated column frame are small arc-shaped, the prefabricated column frame is a thin-walled column frame, and the thickness is ≤50mm. The present invention can improve the quality of construction, speed up the construction speed, achieve energy conservation and environmental protection, increase the assembly rate, reduce the cost, and make the structure safe and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated building systems, and in particular to a prefabricated column frame, a reinforced concrete frame structure and an assembly method for prefabricated buildings. Background Art

[0002] In order to adjust the structure of the construction industry, improve the quality of buildings, speed up the construction speed, achieve energy conservation and environmental protection, and reduce the cost of projects, the state has proposed to vigorously promote prefabricated buildings and clarified the specific implementation plan; and requires that they be widely used in reinforced concrete frame structures, reinforced concrete frame shear wall structures, steel structures and steel-concrete composite structure systems, and clarified the structural system and application areas of prefabricated buildings in my country. However, large-span reinforced concrete frame structure prefabricated buildings have just started, and they use ordinary composite floor slabs and double T-plate floor slabs, which result in high costs and are not grounded, restricting the development of the prefabricated building industry.

[0003] For example, the inventor's patent application number CN200410082381.9 discloses a hollow small dense-rib floor slab, in which the hollow filling body is buried in the cast-in-place floor slab to form a "T-shaped" load-bearing section hollow layer, which solves the problems of large span, large space and large load, and lays the foundation for prefabricated building floors.

[0004] In order to promote the development of residential industrialization in my country, the inventor's patent application number CN201620408935.8 discloses an integrated energy-saving system for passive buildings, and expands the cast-in-place concrete hollow floor slab to the field of prefabricated buildings through creative transformation, solving the problems of poor structural integrity of prefabricated buildings, large spans without exposed beams, oversized components, industrialized components, controllable building quality, work efficiency and environmental protection. Although the above technologies have laid the foundation for the process of residential industrialization in my country, there are still problems such as the unidirectional force of long prefabricated assembled cavity plate components, cracks in the gap when two prefabricated assembled cavity plates are spliced, and the connection space of the horizontal steel bars of the bidirectionally stressed cavity floor slab is limited.

[0005] In order to overcome the difficulty of low assembly rate of reinforced concrete prefabricated building structures, the inventor's patent application number CN201710951186.2 discloses a prefabricated building structure, which increases the assembly rate from less than 40% to more than 70%. It has passed the national test acceptance, has strong structural safety and good economy, and has played a positive role in the government's promotion of prefabricated buildings; however, the beams, columns, and floor nodes are all cast-in-place. Although the structure is safe, a large number of temporary supports are required to support the beams, columns, and floor components, and there are many steel bar joints at the intersections of beams and beams, and beams and columns. The steel bar connection is cumbersome and expensive.

[0006] Therefore, there are still many unresolved technical issues in prefabricated buildings with reinforced concrete frame structures, which leads to high construction costs and hinders their promotion. Summary of the invention

[0007] The purpose of the present invention is to provide a prefabricated column frame, reinforced concrete frame structure and assembly method for prefabricated buildings, which can completely solve the problems of shear force and punching resistance of beam-column nodes of prefabricated frame structures, improve building quality, speed up construction, achieve energy conservation and environmental protection, increase assembly rate, reduce construction cost and ensure safe and reliable structure, and give full play to the advantages of innovative prefabricated building technology; prefabricated reinforced concrete support bodies, column frames, main beams, cavity plate components, stairs, wall panels and other prefabricated components produced in factories are assembled on site, and then concrete is poured in the connection spaces such as the nodes outside the prefabricated reinforced concrete support bodies, the inside of the column frames, and the upper flange of the building floor slabs, so as to realize a new technology of prefabricated building overall structure with strong columns and weak beams and then the upper flange superimposed layer of the floor slab, thereby reducing a large number of supporting rods and simplifying the construction process; the existing frame structure, frame core tube structure, steel structure prefabricated superimposed floor slab and double T-plate floor slab technology are transformed and upgraded into a prefabricated building technology with prefabricated reinforced concrete support bodies, so as to optimize the existing prefabricated building structure technology system and overcome a series of defects existing in the existing technical structure.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] The present invention discloses a prefabricated column frame for assembled buildings. The prefabricated column frame is assembled on the upper side of the outer side of the hollow part of the prefabricated reinforced concrete support body, and a load-bearing column steel cage is arranged in the prefabricated column frame. The prefabricated column frame is composited with wire mesh plate concrete or ribbed steel mesh concrete under the action of a mold. The prefabricated column frame is square, and the outer surface of the prefabricated column frame has three smooth sides. The four corners of the prefabricated column frame are in small arc shapes. The prefabricated column frame is a thin-walled column frame with a thickness of ≤50 mm.

[0010] Furthermore, the side length of the prefabricated column frame is ≥600mm.

[0011] Furthermore, the prefabricated reinforced concrete support body is in a diamond shape, and the prefabricated reinforced concrete support body includes a main beam assembly end, diamond edges, diamond corners, reinforced concrete between beams and a main beam connecting steel plate. A square column hole is arranged in the middle of the prefabricated reinforced concrete support body, and the main beam cross steel bars are arranged in the square column hole.

[0012] Furthermore, the prefabricated column frame is filled with post-cast reinforced concrete, and the post-cast reinforced concrete and the inner surface of the prefabricated column frame, which is a rough surface formed by injecting steel mesh concrete into an uneven surface, are organically combined into a column.

[0013] Furthermore, the prefabricated column frame uses a three-sided column outer mold with a blocked end, the column outer mold has a built-in four-sided inner mold, a wire mesh plate is sandwiched between the column outer mold and the built-in four-sided inner mold, and is poured with concrete.

[0014] Furthermore, the prefabricated column frame uses a three-sided column outer mold with a blocked end, and the column outer mold has a ribbed steel mesh cage built in, and the ribbed steel mesh replaces the inner mold, eliminating the need for steel bars and inner molds.

[0015] Furthermore, the prefabricated column frame is produced by a centrifugal force mold, and triangular inner molds are provided at four corners of the centrifugal force mold, and the distance between the triangular inner mold and the centrifugal force mold is equal to the thickness of the prefabricated column frame.

[0016] The present invention also provides a reinforced concrete frame structure, which adopts the prefabricated column frame for assembled buildings, and also includes a prefabricated reinforced concrete support body, a prefabricated main beam, a cavity floor component and column reinforcement. The prefabricated reinforced concrete support body is rhombus-shaped, and the prefabricated reinforced concrete support body includes the main beam assembly end, rhombus edges, rhombus corners, reinforced concrete between beams and main beam connecting steel plates. A square column hole is arranged in the middle of the prefabricated reinforced concrete support body, and the main beam cross reinforcement is arranged in the square column hole; the column reinforcement cage is tied to the foundation column of the ground structure, and the tying length of the column reinforcement cage is greater than the floor height. The prefabricated column frame is sleeved outside the tied column reinforcement cage, and concrete is poured in the prefabricated column frame to form a reinforced concrete composite column; the square column hole of the prefabricated reinforced concrete support body is aligned with the reinforced concrete composite column, and is placed On the upper concrete end of the prefabricated column frame of the reinforced concrete composite column; the main beam assembly end of the prefabricated reinforced concrete support body is aligned with the diamond corner of the prefabricated reinforced concrete support body at the upper end of the adjacent reinforced concrete composite column; the steel plates of the adjacent prefabricated reinforced concrete support bodies are connected after fastening the steel bar joints through the screws in the bolt holes, and assembled to form the main beam; the cavity floor component is placed in the reinforced concrete frame formed by the prefabricated reinforced concrete support body and the main beam, the transverse rib beam steel bars are connected and the longitudinal full-length rib beam steel bars are added in the splicing groove between the plates, and then the flange plate steel bars on the floor and the upper steel bars of the prefabricated reinforced concrete support body are laid, and the square column holes, the main beam assembly ends, the splicing grooves between the cavity floor components, the flange plate steel bars on the floor and the upper steel bars of the prefabricated reinforced concrete support body are poured with concrete to assemble and combine into a reinforced concrete frame structure.

[0017] The present invention also provides a method for assembling a reinforced concrete frame structure, using the reinforced concrete frame structure, comprising the following steps:

[0018] S1. Prefabricated concrete column frames, prefabricated reinforced concrete support bodies, prefabricated main beams and cavity floor slab components required for the frame structure are manufactured in the factory;

[0019] S2. Tie a column reinforcement cage on the ground structure foundation column, the length of which is greater than the floor height; sheath the prefabricated column frame outside the tied column reinforcement cage, calibrate the sheathing position coordinates of the prefabricated column frame, and then pour concrete in the prefabricated column frame to build a reinforced concrete composite column;

[0020] S3, hoist the prefabricated reinforced concrete support body horizontally, align the square column hole in the middle of the prefabricated reinforced concrete support body with the reinforced concrete composite column, and pass through the exposed column steel bars of the reinforced concrete composite column, and place it on the upper concrete of the prefabricated column frame of the reinforced concrete composite column, the four corners of the prefabricated reinforced concrete support body are propped up by vertical support rods, and the main beam assembly end is aligned with the corner of the prefabricated reinforced concrete support body at the upper end of the adjacent reinforced concrete composite column; the steel plates connecting the adjacent prefabricated reinforced concrete support bodies are fastened with the steel bar joints through the screws in the bolt holes, and the main beam is assembled;

[0021] S4. Place the cavity floor slab components in the reinforced concrete frame formed by the precast reinforced concrete support body and the main beam, connect the transverse rib beam steel bars and add longitudinal full-length rib beam steel bars in the splicing grooves between the plates, and then lay the flange plate steel bars on the floor slab and the upper steel bars of the precast reinforced concrete support body; repeatedly tie the extended column steel bar cage, and then put the precast column frame outside the tied column steel bar cage, after correcting the precast column frame fitting position coordinates, pour concrete in the precast column frame to build a reinforced concrete composite column, and then pour concrete on the square column hole, the main beam assembly end, the splicing grooves between the cavity floor slab components, the flange plate steel bars on the floor slab components and the upper steel bars of the precast reinforced concrete support body.

[0022] Furthermore, in step S4, N layers of frames are assembled first and then the cavity floor components and the reinforced concrete are poured.

[0023] Compared with the prior art, the beneficial technical effects of the present invention are:

[0024] The prefabricated column frame, reinforced concrete frame structure and assembly method for prefabricated buildings of the present invention are based on the building structure design drawings, aiming at the geometric dimensions of the main beams, floor slabs and supports of the horizontal structure, and the columns and wall panels of the vertical structure, and the building structure design drawings are decomposed to perform quantitative secondary design or BIM processing on the assembly form. The drawings are decomposed into N columns, beams, prefabricated cavity plate components and wall components, etc. The factory organizes the production of prefabricated components of the specifications and models according to the decomposed drawings, and the components are transported to the project site for assembly and post-casting to form a prefabricated integral building.

[0025] The present invention can enhance the shear force and the ability to resist punching force by arranging the precast reinforced concrete support bodies in the cast-in-place concrete node areas of the beams, columns and floor slabs, and disperse the stress-bearing steel bar nodes of the columns and beams of the post-cast concrete in the middle of the columns and on the main beam assembly ends arranged on the diamond-shaped or triangular corners outside the precast reinforced concrete support bodies; the column stress-bearing steel bars extend upward through the criss-crossing beam stress-bearing steel bars in the square column holes in the middle of the precast reinforced concrete supports, thereby realizing the absence of steel bar joints at the beam and column node parts, greatly reducing the supporting rods, further accelerating the assembly speed, improving the assembly quality, reducing the project cost, and realizing the overall structure of the assembled building with strong columns, weak beams and flange overlapped layers on the post-cast floor slabs, which is a major breakthrough in the new technology system of assembled buildings with reinforced concrete frame structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of a prefabricated column frame for assembled buildings according to Embodiment 1 of the present invention;

[0028] Figure 2 This is a schematic cross-sectional structure diagram of a prefabricated column frame for assembled buildings according to Embodiment 1 of the present invention;

[0029] Figure 3 This is a schematic diagram of the planar structure of the reinforced concrete frame structure of Example 2 of the present invention.

[0030] Explanation of the reference numerals: 1. Frame structure; 2. Precast reinforced concrete support body; 21. Triangular precast reinforced concrete support body; 211. Main beam connection end; 212. Rebar joint; 22. Square column hole; 23. Diamond edge; 24. Main beam assembly end; 25. Diamond corner; 26. Reinforced concrete between beams; 27. Bolt hole; 28. Main beam connecting steel plate; 29. ​​Main beam cross reinforcement; 3. Precast column frame; 31. Column reinforcement; 33. Concrete; 35. Injected concrete; 36. Ribbed steel mesh; 37. Steel wire mesh; 38. Injected concrete; 39. Small arc; 4. Precast main beam; 5. Cavity floor component; 51. Transverse rib beam reinforcement; 52. Longitudinal full-length rib beam reinforcement; 53. Flange plate reinforcement on floor; 54. Joint groove between plates. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "length", "width", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] Example 1

[0036] In order to solve the problem of strong column weak beam and beam-column joints without joints, such as Figure 1 , Figure 2 As shown, the prefabricated column frame 3 for prefabricated buildings of this embodiment 1 is assembled on the upper surface of the outer side of the hollow part of the prefabricated reinforced concrete support body 2, and the load-bearing column steel bars 31 are connected inside the prefabricated column frame 3. The prefabricated column frame 3 is composited by steel wire mesh plate 37 concrete or ribbed steel mesh body 36 concrete under the action of the mold; the prefabricated column frame 3 is square, the side length of the prefabricated column frame 3 is ≥600mm, and the outer surface of the prefabricated column frame 3 is smooth on three sides and the other side is a rough surface combined with the outer wall surface. The inner surface of the prefabricated column frame 3 is injected with steel wire mesh plate 37 concrete or ribbed steel mesh body 36 concrete into an uneven rough surface, which is conducive to the combination of the prefabricated column frame 3 and the post-cast column. The four corners of the prefabricated column frame 3 are small arcs 39; the prefabricated column frame 3 is a thin-walled column frame, and the thickness is ≤50mm.

[0037] Among them, the prefabricated reinforced concrete support body 2 is rhombus-shaped, and the prefabricated reinforced concrete support body 2 includes a main beam assembly end 24, a rhombus edge 23, a rhombus corner 25, reinforced concrete between beams 26 and a main beam connecting steel plate 28, and a square column hole 22 is arranged in the middle of the prefabricated reinforced concrete support body 2, and the main beam cross steel bars 29 are arranged in the square column hole 22.

[0038] In addition, the prefabricated column frame 3 is filled with post-cast reinforced concrete, and the post-cast reinforced concrete and the inner surface of the prefabricated column frame 3, which is a rough surface formed by pouring steel mesh concrete into an uneven surface, are organically combined into a column.

[0039] Optionally, the prefabricated column frame 3 uses a three-sided column outer mold with a blocked end, a four-sided inner mold is built into the column outer mold, a wire mesh plate 37 is sandwiched between the column outer mold and the built-in four-sided inner mold, and concrete is poured; or, the prefabricated column frame 3 uses a three-sided column outer mold with a blocked end, a ribbed steel mesh 36 cage is built into the column outer mold, and the ribbed steel mesh 36 replaces the inner mold, and there is no need to use steel bars and inner molds.

[0040] At this time, the prefabricated column frame 3 is produced by a centrifugal force mold, and a triangular inner mold is provided at the four corners of the centrifugal force mold. The distance between the triangular inner mold and the centrifugal force mold is equal to the thickness of the prefabricated column frame 3.

[0041] In addition, the prefabricated column frame 3 can adopt a centrifugal force mold system to produce a prefabricated column frame 3 with smooth four sides. At this time, local inner molds must be placed at the four inner corners of the centrifugal force mold system; a three-sided outer mold with a seal and a four-sided inner mold can also be placed on a vibration table to produce a prefabricated column frame 3 with smooth three sides, a wire mesh plate 37 is sandwiched between the outer mold and the inner mold, concrete 35 is injected and vibrated to form a prefabricated column frame 3; a three-sided outer mold with a seal and a ribbed steel mesh body 36 can also be used to replace the four-sided inner mold, concrete 38 is injected between the three-sided outer mold and the ribbed steel mesh body 36, and vibration can be used to obtain a prefabricated column frame 3 with four small arc-shaped 39 column corners. At this time, the three outer sides of the prefabricated column frame 3 are smooth, and the four inner sides of the prefabricated column frame 3 are rough, which is conducive to compounding with the post-cast column concrete.

[0042] Example 2

[0043] like Figure 3 As shown, the reinforced concrete frame structure 1 of this embodiment 2 adopts the prefabricated column frame 3 for prefabricated buildings, and also includes a prefabricated reinforced concrete support body 2, a prefabricated main beam 4, a cavity floor component 5 and a column steel bar 31. The prefabricated reinforced concrete support body 2 is rhombus-shaped, and the prefabricated reinforced concrete support body 2 includes a main beam assembly end 24, a rhombus edge 23, a rhombus corner 25, reinforced concrete 26 between beams and a main beam connecting steel plate 28. A square column hole 22 is arranged in the middle of the prefabricated reinforced concrete support body 2, and a main beam cross steel bar 29 is arranged in the square column hole 22; the column steel bar 31 is tied to the foundation column part of the ground structure, and the tying length of the column steel bar 31 is greater than the floor height. The prefabricated column frame 3 is set outside the tied column steel bar 31, and concrete is poured in the prefabricated column frame 3 to form a reinforced concrete composite column; the square column hole 22 of the prefabricated reinforced concrete support body 2 is aligned with the reinforced concrete composite column, and passes through the exposed The column reinforcement 31 is arranged on the upper end concrete of the prefabricated column frame 3 of the reinforced concrete composite column, the four corners 25 of the prefabricated reinforced concrete support body 2 are propped up by vertical support rods, and the main beam assembly end 24 is aligned with the corners 25 of the prefabricated reinforced concrete support body 2 at the upper end of the adjacent reinforced concrete composite column; the steel plates of the adjacent prefabricated reinforced concrete support bodies 2 are connected after being fastened to the steel bar joints 212 by the screws in the bolt holes 27, and assembled to form the main beam; the cavity floor slab component 5 is arranged in the reinforced concrete frame formed by the prefabricated reinforced concrete support body 2 and the main beam, the transverse rib beam reinforcement 51 is connected and the longitudinal through-length rib beam reinforcement 52 is added in the splicing groove 54 between the plates, and then the flange plate reinforcement 53 on the floor slab and the upper reinforcement of the support body are laid, and the square column holes 22, the main beam assembly end 24, the splicing groove between the cavity floor slab components 5, the flange plate reinforcement on the floor slab component and the upper reinforcement of the support body are poured with concrete, and assembled into a reinforced concrete frame structure 1.

[0044] In order to further strengthen the force of the prefabricated reinforced concrete support body 2, axillary beams are applied to the lower bottom of the longitudinal main beam and the transverse main beam of the support.

[0045] Example 3

[0046] The assembly method of the reinforced concrete frame structure 1 of the present embodiment 3 adopts the reinforced concrete frame structure 1, and comprises the following steps:

[0047] S1, in the factory, prefabricated column frames 3, diamond-shaped prefabricated reinforced concrete support bodies 2 or triangular prefabricated reinforced concrete support bodies 21, prefabricated main beams 4, prefabricated stairs, cavity floor slabs 5 and column reinforcements 31 of the prefabricated concrete of the required specifications and models of the frame structure 1 are manufactured, wherein the diamond-shaped prefabricated reinforced concrete support body 2 comprises a main beam assembly end 24, a square column hole 22 in the middle of the support, diamond edges 23, diamond corners 25, reinforced concrete 26 between beams, bolt holes 27, main beam connecting steel plates 28, and main beam cross reinforcements 29 in the square column holes 22 in the middle of the support, and then the prefabricated concrete components of the required specifications and models manufactured in the factory are transported in batches to the frame structure construction site;

[0048] S2, tying column reinforcement 31 on the foundation column of the ground structure, the length of the tying column reinforcement 31 is greater than the floor height, and the prefabricated column frame 3 is set outside the tied column reinforcement 31, and after correcting the position coordinates of the prefabricated column frame 3, concrete 33 is poured in the prefabricated column frame 3 to build a reinforced concrete composite column;

[0049] S3, the prefabricated reinforced concrete support body 2 is hoisted horizontally, the square column hole 22 in the middle of the diamond-shaped prefabricated reinforced concrete support body 2 is aligned with the reinforced concrete composite column, and passes through the exposed column steel bar 31 of the composite column, and is placed on the upper end concrete of the prefabricated column frame 3 of the composite column, the four diamond-shaped prefabricated reinforced concrete support body 2 are supported by vertical support rods, and the main beam assembly end 24 is aligned with the diamond-shaped prefabricated reinforced concrete support body 2 at the upper end of the adjacent composite column; the diamond-shaped prefabricated reinforced concrete support body 2 is placed on the upper end of the adjacent composite column. Support body 2 or triangular prefabricated reinforced concrete support body 21; temporarily overlap the main beam assembly end 24 between the main beam assembly end 24 and the main beam connection end 211 with a positioning square steel pipe, calibrate and position the support; align the prefabricated main beam 4 with the main beam assembly end 24 of the prefabricated reinforced concrete support body 2, connect the steel plate 28 of the longitudinal groove at the bottom of the main beam of the main beam assembly end of the adjacent prefabricated reinforced concrete support body 2, and fasten the steel bar joint 212 with the screw in the bolt hole 27 to assemble and form the main beam;

[0050] S4, install prefabricated stairs, place the cavity floor component 5 in the reinforced concrete frame formed by the prefabricated reinforced concrete support body 2 and the main beam, connect the transverse rib beam steel bars 51 and add the longitudinal full-length rib beam steel bars 52 in the inter-plate splicing groove 54, and then lay the flange plate steel bars 53 on the floor and the upper steel bars of the support; repeatedly tie the extended column steel bars 31, whose length is equal to the floor height, and put the prefabricated column frame 3 on the outside of the tied column steel bars 31. After correcting the coordinates of the prefabricated column frame 3, pour concrete 33 in the prefabricated column frame 3 to build a reinforced concrete composite column, and at the same time pour concrete into the square column hole 22, the main beam assembly end 24, the inter-plate splicing groove 54, the flange plate steel bars 53 on the floor and the upper steel bars of the support; repeat the above steps to assemble and combine into a reinforced concrete frame structure 1.

[0051] Optionally, N layers of frames may be assembled first and then the cavity floor components 5 and the reinforced concrete poured thereafter.

[0052] The present invention can enhance the shear force and the ability to resist punching force by arranging the precast reinforced concrete support bodies in the cast-in-place concrete node areas of the beams, columns and floor slabs, and disperse the stress-bearing steel bar nodes of the columns and beams of the post-cast concrete in the middle of the columns and on the main beam assembly ends arranged on the diamond-shaped or triangular corners outside the precast reinforced concrete support bodies; the column stress-bearing steel bars extend upward through the criss-crossing beam stress-bearing steel bars in the square column holes in the middle of the precast reinforced concrete supports, thereby realizing the absence of steel bar joints at the beam and column node parts, greatly reducing the supporting rods, further accelerating the assembly speed, improving the assembly quality, reducing the project cost, and realizing the overall structure of the assembled building with strong columns, weak beams and flange overlapped layers on the post-cast floor slabs, which is a major breakthrough in the new technology system of assembled buildings with reinforced concrete frame structures.

[0053] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A prefabricated column frame for assembled buildings, characterized in that: The prefabricated column frame is assembled on the outer side of the hollow part of the prefabricated reinforced concrete support body, and a load-bearing column steel cage is arranged inside the prefabricated column frame; the prefabricated column frame is composited with wire mesh plate concrete or ribbed steel mesh concrete under the action of the mold, the prefabricated column frame is square, and the outer surface of the prefabricated column frame has three smooth sides; the four corners of the prefabricated column frame are small arcs, the prefabricated column frame is a thin-walled column frame, and the thickness is ≤50mm.

2. The prefabricated column frame for assembled buildings according to claim 1, characterized in that: The side length of the prefabricated column frame is ≥600mm.

3. The prefabricated column frame for assembled buildings according to claim 1, characterized in that: The prefabricated reinforced concrete support body is in a diamond shape, and comprises a main beam assembly end, diamond edges, diamond corners, reinforced concrete between beams and a main beam connecting steel plate. A square column hole is arranged in the middle of the prefabricated reinforced concrete support body, and main beam cross steel bars are arranged in the square column hole.

4. The prefabricated column frame for assembled buildings according to claim 1, characterized in that: The prefabricated column frame is filled with post-cast reinforced concrete, and the post-cast reinforced concrete and the inner surface of the prefabricated column frame, which is a rough surface formed by injecting steel mesh concrete into an uneven surface, are organically combined into a column.

5. The prefabricated column frame for assembled buildings according to claim 1, characterized in that: The prefabricated column frame uses a three-sided column outer mold with a blocked end, the column outer mold has a built-in four-sided inner mold, a wire mesh plate is sandwiched between the column outer mold and the built-in four-sided inner mold, and is poured with concrete.

6. The prefabricated column frame for assembled buildings according to claim 1, characterized in that: The prefabricated column frame uses a three-sided column outer mold with a blocked end. The column outer mold has a ribbed steel mesh cage built in. The ribbed steel mesh replaces the inner mold, and there is no need to use steel bars and the inner mold.

7. The prefabricated column frame for assembled buildings according to any one of claims 1 to 6, characterized in that: The prefabricated column frame is produced by a centrifugal force mold, and four corners of the centrifugal force mold are provided with triangular inner molds, and the distance between the triangular inner mold and the centrifugal force mold is equal to the thickness of the prefabricated column frame.

8. Reinforced concrete frame structure, characterized in that: The prefabricated column frame for prefabricated buildings according to any one of claims 1 to 7 further includes a prefabricated reinforced concrete support body, a prefabricated main beam, a cavity floor component and column reinforcement, the prefabricated reinforced concrete support body is rhombus-shaped, and the prefabricated reinforced concrete support body comprises a main beam assembly end, rhombus edges, rhombus corners, reinforced concrete between beams and a main beam connecting steel plate, a square column hole is arranged in the middle of the prefabricated reinforced concrete support body, and main beam cross reinforcement is arranged in the square column hole; the column reinforcement cage is tied to the foundation column of the ground structure, the tying length of the column reinforcement cage is greater than the floor height, the prefabricated column frame is sleeved outside the tied column reinforcement cage, and concrete is poured in the prefabricated column frame to form a reinforced concrete composite column; the square column hole of the prefabricated reinforced concrete support body is aligned with the reinforced concrete composite column, and is placed in the The upper end concrete of the precast column frame of the reinforced concrete composite column; the main beam assembly end of the precast reinforced concrete support body is aligned with the diamond corner of the precast reinforced concrete support body at the upper end of the adjacent reinforced concrete composite column; the steel plates of the adjacent precast reinforced concrete support bodies are connected after fastening the steel bar joints through the screws in the bolt holes, and assembled to form the main beam; the cavity floor component is placed in the reinforced concrete frame formed by the precast reinforced concrete support body and the main beam, the transverse rib beam steel bars are connected and the longitudinal full-length rib beam steel bars are added in the splicing groove between the plates, and then the flange plate steel bars on the floor and the upper steel bars of the precast reinforced concrete support body are laid, and the square column holes, the main beam assembly ends, the splicing grooves between the cavity floor components, the flange plate steel bars on the floor and the upper steel bars of the precast reinforced concrete support body are poured with concrete to assemble and combine into a reinforced concrete frame structure.

9. A method for assembling a reinforced concrete frame structure, characterized in that: The reinforced concrete frame structure according to claim 8 comprises the following steps: S1. Prefabricated concrete column frames, prefabricated reinforced concrete support bodies, prefabricated main beams and cavity floor slab components required for the frame structure are manufactured in the factory; S2. Tie a column reinforcement cage on the ground structure foundation column, the length of which is greater than the floor height; sheath the prefabricated column frame outside the tied column reinforcement cage, calibrate the sheathing position coordinates of the prefabricated column frame, and then pour concrete in the prefabricated column frame to build a reinforced concrete composite column; S3, hoist the prefabricated reinforced concrete support body horizontally, align the square column hole in the middle of the prefabricated reinforced concrete support body with the reinforced concrete composite column, and pass through the exposed column steel bars of the reinforced concrete composite column, and place it on the upper concrete of the prefabricated column frame of the reinforced concrete composite column, the four corners of the prefabricated reinforced concrete support body are propped up by vertical support rods, and the main beam assembly end is aligned with the corner of the prefabricated reinforced concrete support body at the upper end of the adjacent reinforced concrete composite column; the steel plates connecting the adjacent prefabricated reinforced concrete support bodies are fastened with the steel bar joints through the screws in the bolt holes, and the main beam is assembled; S4. Place the cavity floor slab components in the reinforced concrete frame formed by the precast reinforced concrete support body and the main beam, connect the transverse rib beam steel bars and add longitudinal full-length rib beam steel bars in the splicing grooves between the plates, and then lay the flange plate steel bars on the floor slab and the upper steel bars of the precast reinforced concrete support body; repeatedly tie the extended column steel bar cage, and then put the precast column frame outside the tied column steel bar cage, after correcting the precast column frame fitting position coordinates, pour concrete in the precast column frame to build a reinforced concrete composite column, and then pour concrete on the square column hole, the main beam assembly end, the splicing grooves between the cavity floor slab components, the flange plate steel bars on the floor slab components and the upper steel bars of the precast reinforced concrete support body.

10. The method for assembling a reinforced concrete frame structure according to claim 9, characterized in that: In step S4, N layers of frames are assembled first, followed by the cavity floor components and the reinforced concrete poured later.

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