Structure of prefabricated three-surface laminated hollow column

Abstract

The utility model discloses a structure of a prefabricated three-surface superposed hollow column, which comprises a rectangular middle reinforcing steel bar frame assembly, an additional reinforcing steel bar mesh is arranged on one side wall of the middle reinforcing steel bar frame assembly, and the additional reinforcing steel bar mesh is connected with two adjacent surfaces of the middle reinforcing steel bar frame assembly. Post-poured composite columns are arranged on the middle steel bar frame assembly on the opposite side and the two adjacent sides of the additional steel bar net, and a post-poured non-dismantling formwork is arranged with the additional steel bar net as a supporting framework. The frame column has high industrialization and high integration, and can solve the problems of heavy weight, complex process, high cost and poor overall stress of the frame column in the prior art.

Description

Technical Field

[0001] This utility model relates to a structure of a prefabricated three-sided stacked hollow column, belonging to the field of hollow column technology. Background Technology

[0002] Prefabricated construction, simply put, is building houses like manufacturing cars. The basic components of the house—beams, slabs, columns, and walls—are prefabricated in a factory and then transported to the construction site for assembly. This represents the future direction of industrialized construction. Prefabricated concrete buildings are generally divided into two main categories based on structural type: frame structures and shear wall structures. In frame structures, the vertical load-bearing components are the frame columns, and the horizontal load-bearing components are the frame beams and floor slabs.

[0003] For frame columns, existing precast column structures include three types: solid columns, hollow columns, and hollow columns that do not require formwork removal. Specifically:

[0004] Precast solid columns: Using molds, reinforcing steel bars are poured together with concrete to form solid precast columns; the technical defects of this structure and process are: the components are heavy, and the transportation and installation costs are high; the reinforcing steel bars can only be connected by "sleeve grouting", which is costly and the quality is not easy to guarantee.

[0005] Precast hollow columns involve pouring concrete around the perimeter of the column, creating a cavity in the center. The reinforcing steel bars are then poured together with the surrounding concrete to form a composite structure. After being transported to the construction site, a second layer of concrete is poured inside the cavity. The technical drawbacks of this structure and process are: only the center is hollowed out, resulting in limited weight reduction; prefabrication and installation costs are relatively high; the process is complex, production efficiency is low, and equipment investment is large; and the surface roughness of the composite concrete within the cavity is difficult to guarantee, affecting the bonding of the second layer of concrete and compromising overall load-bearing capacity.

[0006] Meanwhile, precast hollow columns without dismantling formwork: using formwork without dismantling, the steel reinforcement system of the column is pre-wrapped to form the entire cavity, and the whole column is transported to the construction site for concrete pouring; its disadvantages include low rigidity of hollow columns, easy damage during transportation and hoisting; and easy bulging of the formwork during on-site pouring.

[0007] In other words, there is a need for a prefabricated three-sided composite hollow column structure that is highly industrialized and integrated, and can solve the problems of heavy weight, complex process, high cost and poor overall load-bearing capacity of existing frame columns. Utility Model Content

[0008] In view of this, the purpose of this utility model is to provide a prefabricated three-sided composite hollow column structure, which is highly industrialized and highly integrated, and can solve the problems of heavy weight, complex process, high cost and poor overall stress of existing frame columns; it can overcome the shortcomings of the existing technology.

[0009] The objective of this utility model is achieved through the following technical solution:

[0010] This utility model discloses a structure of a prefabricated three-sided composite hollow column, which includes a rectangular central steel reinforcement frame assembly. An additional steel reinforcement mesh is provided on one side wall of the central steel reinforcement frame assembly. The additional steel reinforcement mesh is connected to the two adjacent sides of the central steel reinforcement frame assembly. A post-cast composite column is provided on the central steel reinforcement frame assembly on the opposite side of the additional steel reinforcement mesh and on the adjacent two sides. A post-cast, non-removable formwork is provided with the additional steel reinforcement mesh as a supporting skeleton.

[0011] The aforementioned additional steel mesh is a "C" shaped structure, with its left and right ends located within the post-cast composite column.

[0012] The aforementioned additional steel mesh is provided with a U-shaped hoop in the middle to enhance the connection strength with the central steel frame assembly.

[0013] The two ends of the aforementioned U-shaped hoop are connected to additional steel mesh, and longitudinal steel bars are distributed along the longitudinal direction on the central steel frame assembly. The longitudinal steel bars are confined within the notch of the U-shaped hoop.

[0014] The inner wall of the aforementioned composite column has a rough surface.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention employs a three-stage flipping molding process to create a precast hollow column that is as large as possible while minimizing mold bulging, thus reducing weight. Simultaneously, the post-cast, three-sided enclosed composite column encloses three sides of the central steel reinforcement frame assembly. Then, a post-cast, non-removable formwork is used to form the combined hollow column. Compared to existing structural forms and construction techniques, its advantages are: First, the process is simple, with easy flipping molding, improving production efficiency; second, the non-removable formwork design increases the cavity size, significantly reducing the weight of precast components; third, the three-sided enclosed composite column encloses the load-bearing central steel reinforcement frame assembly, ensuring column rigidity; fourth, sufficient surface roughness is guaranteed, and the non-removable formwork is sealed after the composite column's roughened surface is completed; fifth, the number of steel reinforcement connection methods is increased, facilitating construction; sixth, it has a large production capacity, facilitating widespread application; and seventh, it reduces costs.

[0017] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings, wherein:

[0019] Figure 1 This is a schematic diagram of the structure of the additional steel mesh in this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the U-shaped hoop of this utility model.

[0021] Figure 3 This is a schematic diagram of the connection structure between the central steel reinforcement frame assembly and the additional steel mesh of this utility model.

[0022] Figure 4 This is a schematic diagram of the connection structure after the composite slab is cast on the middle steel frame assembly on the adjacent side of the additional steel mesh according to this utility model.

[0023] Figure 5 This is a schematic diagram of the connection structure after the composite slab is cast on the middle steel frame assembly on both sides of the additional steel mesh according to this utility model.

[0024] Figure 6 This is a schematic diagram of the connection structure after the composite slab is cast on the middle steel frame assembly on the adjacent sides and opposite sides of the additional steel mesh according to this utility model.

[0025] Figure 7 In order to be in Figure 6 The diagram shows the connection structure after adding the non-removable mold based on the original design.

[0026] Among them, the central steel frame assembly is 1; additional steel mesh is 2; composite column is 3; formwork that does not need to be removed is 4; U-shaped hoop is 5; longitudinal steel bar is 6. Detailed Implementation

[0027] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0028] like Figures 1-7As shown, this utility model discloses a prefabricated three-sided composite hollow column structure, which includes a rectangular central steel reinforcement frame assembly 1. An additional steel reinforcement mesh 2 is provided on one side wall of the central steel reinforcement frame assembly 1. The additional steel reinforcement mesh 2 is connected to two adjacent sides of the central steel reinforcement frame assembly 1. Post-cast composite columns 3 are provided on the central steel reinforcement frame assembly 1 on the opposite side and adjacent sides of the additional steel reinforcement mesh 2. The inner wall of the composite column 3 has a rough surface. A post-cast, non-removable template 4 is provided with the additional steel reinforcement mesh 2 as a supporting framework. This structure allows the three sides of the central steel reinforcement frame assembly 1 to be enclosed by the post-cast, three-sided composite column 3. Then, the post-cast, non-removable template 4 forms a combined hollow column, ensuring the strength of the column. Simultaneously, the non-removable template 4 is only cast on the additional steel reinforcement mesh 2, and its thickness can be minimized. There is a gap between its inner wall and the central steel reinforcement frame assembly 1, thus ensuring overall connection strength while minimizing overall weight.

[0029] Furthermore, the additional steel mesh 2 has a "C" shaped structure, with both ends of the additional steel mesh 2 located inside the post-cast composite column 3. This way, after the post-cast composite column 3 is formed, both ends of the additional steel mesh 2 can be firmly fixed inside the composite column 3, which helps to enhance the overall strength.

[0030] Furthermore, the middle part of the additional steel mesh 2 is provided with a U-shaped hoop 5 to enhance the connection strength with the central steel frame assembly 1; specifically, the two ends of the U-shaped hoop 5 are connected to the additional steel mesh 2, and longitudinal steel bars 6 are distributed along the longitudinal direction on the central steel frame assembly 1. The longitudinal steel bars 6 are confined within the notch of the U-shaped hoop 5. This structure, through the U-shaped hoop 5, can further enhance the connection structure between the additional steel mesh 2 and the central steel frame assembly 1.

[0031] The manufacturing process of this prefabricated three-sided composite hollow column includes the following steps:

[0032] Step 1: Design and tie the central steel frame assembly 1 and the additional steel mesh 2 according to the dimensions of the hollow column;

[0033] Step 2: Attach the additional steel mesh 2 to one side of the central steel frame assembly 1, and tie both ends of the additional steel mesh 2 to the central steel frame assembly 1 with wire. At the same time, tie the U-shaped hoop 5 to the central steel frame assembly 1 and the additional steel mesh 2 with wire.

[0034] Step 3: Place one side of the additional steel mesh 2 on the bottom side of the forming mold, pour concrete for the overlapping column 3 on the adjacent side of the additional steel mesh 2, and cure it.

[0035] Step 4: Flip the composite column and the entire central steel frame assembly 1 formed in Step 3 by 180°, pour concrete for the composite column 3 on the other adjacent side of the additional steel mesh 2, and cure it.

[0036] Step 5: After the composite columns 3 on both adjacent sides of the additional steel mesh 2 are formed, based on step 4, the central steel frame assembly 1 is rotated 90°, and concrete is poured for the composite columns 3 on the opposite side of the additional steel mesh 2, and then cured and formed.

[0037] In steps 3-5, after each pour of the composite column 3, its surface must be roughened. In step 6, after the composite columns 3 on both adjacent sides and the opposite side of the additional reinforcing mesh 2 are formed, the central reinforcing frame assembly 1 is rotated 180° to pour concrete without removing the formwork 4, and then cured. The above steps are as follows: Figures 4-7 As shown.

[0038] This structure and process, through three flipping moldings, forms a precast hollow column that is as large as possible and not prone to bulging, which helps reduce weight. Simultaneously, the post-cast, three-sided enclosed composite column 3 can wrap around the three sides of the central steel frame assembly 1. Then, through the post-cast, non-removable formwork 4, a combined hollow column is formed. Compared with existing structural forms and construction processes, its advantages are: First, the process is simple, easy to flip and form, and production efficiency is improved; Second, the non-removable formwork design increases the cavity size, significantly reducing the weight of precast components; Third, the three-sided enclosed composite column 3 encloses the stressed central steel frame assembly 1, ensuring column rigidity; Fourth, sufficient surface roughness is ensured, and the non-removable formwork 4 is sealed after the surface roughening of the composite column is completed; Fifth, the number of steel reinforcement connection methods is increased, facilitating construction; Sixth, the production capacity is huge, making it easy to promote and apply; Seventh, the cost is reduced.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to restrict the present utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments without departing from the technical solution of the present utility model and based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A prefabricated three-face composite hollow column structure comprising a rectangular middle reinforced frame assembly (1), characterized in that, In one side wall of the middle reinforced frame assembly (1), an additional reinforced net (2) is arranged, the additional reinforced net (2) is connected with two adjacent surfaces of the middle reinforced frame assembly (1), on the middle reinforced frame assembly (1) on the opposite side and the adjacent two sides of the additional reinforced net (2), a post-poured composite column (3) is arranged, and a post-poured formwork (4) is arranged with the additional reinforced net (2) as a supporting framework.

2. The precast three-lamella sandwich hollow column structure according to claim 1, characterized in that, The additional reinforced net (2) is a "C" type structure, and the left and right ends of the additional reinforced net (2) are located in the post-poured composite column (3).

3. The precast three-lamella sandwich hollow column structure according to claim 1, characterized in that, The middle part of the additional reinforced net (2) is provided with a U-shaped hoop (5) for enhancing the connection strength with the middle reinforced frame assembly (1).

4. The precast three-lamella sandwich hollow column structure according to claim 3, characterized in that, The two ends of the U-shaped hoop (5) are connected with the additional reinforced net (2), and longitudinal steel bars (6) distributed along the longitudinal direction are arranged on the middle reinforced frame assembly (1), and the longitudinal steel bars (6) are limited in the recess of the U-shaped hoop (5).

5. The prefabricated three-face composite hollow column structure according to any one of claims 1-4, characterized in that, The inner wall of the composite column (3) is provided with a rough surface.

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