Prefabricated hollow column structure of welding assembly non-dismantling formwork

Abstract

The utility model belongs to the technical field of assembly type building engineering, and particularly relates to a welding assembly disassembly-free formwork prefabricated hollow column structure. Comprising a column body reinforcing steel bar system, reinforcing steel bar protective layer cushion blocks and a formwork-removal-free hollow column, the column body reinforcing steel bar system is arranged on the inner side of the formwork-removal-free hollow column, the column body reinforcing steel bar system and the formwork-removal-free hollow column are isolated through the multiple reinforcing steel bar protective layer cushion blocks, and the formwork-removal-free hollow column is of a cuboid structure formed by welding four independently-formed formwork-removal-free formworks in an enclosing mode. According to the utility model, the rigidity is strong, the processing precision of the reinforcing steel bar and the forming precision of the non-dismantling template are controllable, and the forming precision of the assembled prefabricated part is high; pre-embedding of wire pipes, wire boxes and the like is convenient to realize, the production efficiency is high, and the cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of assembled building engineering, and particularly relates to a prefabricated hollow column structure of a welded assembly of non-disassembly templates. Background Art

[0002] Prefabricated buildings are buildings that are formed by prefabricating the basic components of a building, such as beams, slabs, columns, and walls, in factories and then assembling them on site. Frame structures are a type of building, in which the vertical structure is frame columns and the horizontal structure is frame beams and floor slabs. Traditional prefabricated columns are solid concrete structures, which are gradually replaced by prefabricated hollow columns due to their heavy weight and difficulty in connecting upper and lower steel bars.

[0003] The existing prefabricated hollow column structures include: four-sided overlapping hollow columns, two-sided overlapping two-sided free-form hollow columns, and four-sided free-form hollow columns, etc. Among them, the four-sided overlapping hollow columns are formed by centrifugal method, which requires large equipment investment. Concrete thin plates are poured around the column steel cage, and the middle of the column is hollowed out. The column steel bars are located in the surrounding concrete. It is difficult to form a rough concrete surface in the inner cavity of the four-sided overlapping hollow column, which affects the overlapping effect of the secondary pouring, and the weight is too large. The structure of the two-sided overlapping two-sided free-form hollow column is that the two sides of the column steel cage are concrete slabs, and the other two sides are free-form formwork; it is formed by four flips, and the production efficiency is low. The material requirements of the free-form formwork are extremely high, the cost is high, and it cannot be used to make large components. The steel cage of the four-sided free-form hollow column is wrapped with free-form formwork on all four sides. The forming process is through the flipping and pouring process, that is, the steel cage is flipped three times, and the free-form formwork casting material is poured three times to form it. The prefabricated column has low rigidity, is easily deformed during transportation and hoisting, and has poor forming accuracy. The four-sided free-form formwork is extremely expensive, and it is difficult to pre-embed wire pipes and box boxes, and the production efficiency is low. It is very easy to expand the mold during the second pouring. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a prefabricated hollow column structure with a welded assembly of non-removal formwork, so as to solve the problems of existing hollow columns with four-sided non-removal formwork, low rigidity, easy deformation during transportation and hoisting, poor molding accuracy, low production efficiency, and easy mold expansion during secondary pouring.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a welded prefabricated hollow column structure with a non-removal formwork, comprising a column reinforcement system, a reinforcement protection layer pad and a non-removal formwork hollow column, wherein the column reinforcement system is arranged on the inner side of the non-removal formwork hollow column, the column reinforcement system and the non-removal formwork hollow column are isolated by a plurality of reinforcement protection layer pads, and the non-removal formwork hollow column is a rectangular structure enclosed and welded by four non-removal formworks.

[0007] The non-disassembly formwork comprises a non-disassembly formwork body and end inlays covering both sides of the non-disassembly formwork body, wherein the non-disassembly formwork body is cast by concrete, and the end inlays are cast as one piece with the non-disassembly formwork body.

[0008] The end inlays are arranged along the length direction of the non-disassembly template body and are fixed by right-angle inlay or oblique-angle inlay.

[0009] The end inlay is formed by bending a metal plate, and comprises an inlay base plate and an inlay end plate at an acute angle or a right angle, wherein the inlay base plate is coated on the outer surface of the non-disassembly formwork body, and the inlay end plate is coated on the outer side of the side end surface of the non-disassembly formwork body.

[0010] The end of the inlay end plate is bent inwardly to form an end plate fold, and the end plate fold is parallel to the inlay bottom plate. The thickness of the non-disassembly template body is controlled by the end plate fold and the inlay bottom plate.

[0011] The end of the inlay bottom plate is bent inwardly to form a bottom plate fold, and the bottom plate fold is cast inside the non-disassembly template body.

[0012] The outer surface of the inlay bottom plate and the non-disassembly template body are coplanar; the folded edge of the end plate and the inner surface of the non-disassembly template body are coplanar.

[0013] The end inlays of two adjacent non-disassembly templates are fitted together, the inner sides are connected through the internal welding points of the non-disassembly template, and the outer sides are connected through the external welding points of the non-disassembly template.

[0014] The non-disassembly template body is provided with a reserved hole.

[0015] The two opposite non-disassembly templates are connected by tension bolts passing through the reserved holes.

[0016] The advantages and beneficial effects of the utility model are as follows: the utility model provides a welded assembly of non-disassembly formwork prefabricated hollow column structure, which has strong rigidity, and the steel bar processing accuracy and the non-disassembly formwork forming accuracy can be controlled, and the prefabricated components formed by assembly have high forming accuracy; pre-buried wire tubes, wire boxes, etc. are easy to realize, with high production efficiency and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a prefabricated hollow column structure of a welded assembly of a non-disassembly formwork according to the utility model;

[0018] Figure 2 This is a partial enlarged view of a prefabricated hollow column structure of a welded assembly of a non-disassembly template of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the non-disassembly template in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the end inlay in the utility model;

[0021] Figure 5 It is a schematic diagram of the splicing of the non-disassembly template in the utility model.

[0022] In the figure: 1 is the column reinforcement system, 2 is the reinforcement protective layer pad, 3 is the non-disassembly formwork, 301 is the non-disassembly formwork body, 302 is the end inlay, 3021 is the inlay base plate, 3022 is the inlay end plate, 3023 is the end plate folding edge, 3024 is the base plate folding edge, 303 is the reserved hole, 4 is the tension bolt, 5 is the internal welding point of the non-disassembly formwork, and 6 is the external welding point of the non-disassembly formwork. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 , Figure 2 As shown, the utility model provides a welded assembly of a prefabricated hollow column structure with a non-removal formwork, comprising a column reinforcement system 1, a reinforcement protective layer pad 2 and a non-removal formwork hollow column, wherein the column reinforcement system 1 is arranged on the inner side of the non-removal formwork hollow column, the column reinforcement system 1 and the non-removal formwork hollow column are isolated by a plurality of reinforcement protective layer pads 2, and the non-removal formwork hollow column is a rectangular structure enclosed and welded by four independently formed non-removal formworks 3.

[0025] like Figure 3 As shown, in the embodiment of the utility model, the non-disassembly formwork 3 includes a non-disassembly formwork body 301 and end inlays 302 covering both sides of the non-disassembly formwork body 301, wherein the non-disassembly formwork body 301 is cast by concrete, and the end inlays 302 are cast as one with the non-disassembly formwork body 301. Specifically, the end inlays 302 are arranged along the length direction of the non-disassembly formwork body 301, and are fixed by right-angle inlay or oblique-angle inlay.

[0026] like Figure 3 , Figure 4 As shown, in an embodiment of the utility model, the end inlay 302 is formed by bending a metal plate, and includes an inlay base plate 3021 and an inlay end plate 3022 at an acute angle or a right angle, wherein the inlay base plate 3021 is coated on the outer surface of the non-disassembly template body 301, and the inlay end plate 3022 is coated on the outer side of the side end surface of the non-disassembly template body 301, and embedded parts are embedded on both sides of the non-disassembly template body 301 to facilitate welding and forming.

[0027] Furthermore, the end of the inlay end plate 3022 is bent inwardly to form an end plate fold 3023, and the end plate fold 3023 is parallel to the inlay bottom plate 3021. The thickness H of the free-disassembly template body 301 is controlled by the end plate fold 3023 and the inlay bottom plate 3021. The design of the end plate fold 3023 improves the end forming accuracy of the free-disassembly template 3. The end of the inlay bottom plate 3021 is bent inwardly to form a bottom plate fold 3024, and the bottom plate fold 3024 is cast inside the free-disassembly template body 301. The bottom plate fold 3024 increases the anchoring force between the inlay and the free-disassembly template 3.

[0028] Furthermore, the outer surfaces of the inlay bottom plate 3021 and the non-removal template body 301 are coplanar; the end plate folding edge 3023 and the inner surface of the non-removal template body 301 are coplanar, so as to improve the flatness of the non-removal template 3. The thickness and strength of the inlay bottom plate 3021 are designed and determined according to the process requirements, and are preferably made of a patterned steel plate with a rough surface inside.

[0029] Preferably, the angle A between the inlay bottom plate 3021 and the inlay end plate 3022 is 45°.

[0030] like Figures 3 to 5 As shown, during welding, the end inlays 302 of two adjacent non-removable templates 3 are fitted together through the inlay end plates 3022, the inner sides are connected through the internal welding points 5 of the non-removable template, and the outer sides are connected through the external welding points 6 of the non-removable template, as shown in FIG. Figure 2 shown.

[0031] like Figure 1 , Figure 3 As shown, in the embodiment of the utility model, a reserved hole 303 is provided on the non-disassembly formwork body 301. The reserved hole 303 is formed by placing a PVC pipe in advance when pouring the non-disassembly formwork 3. It has various functions, such as a hoisting hole, a temporary fixing hole, and a pulling hole, etc. The specific function is determined according to the process requirements.

[0032] Furthermore, when the size of the hollow column without disassembly formwork is large, the two relative non-disassembly formworks 3 are connected by tension bolts 4 passing through the reserved holes 303, and the tension force is used to constrain the outward deformation of the non-disassembly formworks 3. The arrangement is determined by mechanical calculations, and the tension bolts 4 can be removed and reused.

[0033] Specifically, the column reinforcement system 1 includes a plurality of vertically arranged main bars and stirrups connecting the plurality of main bars. The column reinforcement system 1 is a traditional process and will not be described in detail here. The reinforcement protection layer pad 2 is made of plastic material. The function of the reinforcement protection layer pad 2 is to ensure that the outer periphery of the column reinforcement system 1 is wrapped with a certain amount of concrete to prevent the column reinforcement system 1 from rusting.

[0034] Furthermore, the non-removal formwork 3 is made of cement-based materials, such as high-strength materials compatible with concrete, such as UHPC (ultra-high performance concrete), high-strength cement fiberboard, etc. The end insert 302 is integrally formed of a weldable material plate, such as steel, aluminum alloy, etc. The end insert 302 is cast together with the non-removal formwork body 301, and has a firm connection measure, so as to bear force together on the basis of ensuring the molding accuracy.

[0035] The utility model provides a prefabricated hollow column structure of a welded assembly without disassembly template, and the preparation process is as follows:

[0036] Design stage: including the design of column reinforcement system 1 and non-removal formwork 3;

[0037] Preparation of column reinforcement system 1;

[0038] Preparation of the end insert 302: integrally formed from a steel plate;

[0039] Preparation of the non-disassembly formwork 3: the end inlay 302 is used as the side formwork, the PVC pipe is pre-buried (with reserved holes), the non-disassembly formwork molding material is poured, and the molding material is cured and formed for standby use;

[0040] Lay the bottom non-removal formwork 3, put the two side non-removal formwork 3 in place and weld them into shape, such as Figure 5 As shown;

[0041] Install column reinforcement system 1;

[0042] Install the steel bar protective layer pad 2;

[0043] Install side tension bolts 4 (if necessary);

[0044] Install the top surface non-removal formwork 3 and perform external corner welding 6;

[0045] Install the tension bolts 4 on the other side (if necessary), and take connection measures between the upper and lower ends of the four assembled non-disassembly formworks 3 and the column reinforcement system 1 to prevent separation and falling off during hoisting;

[0046] Finishing;

[0047] Prefabricated components are completed, such as Figure 1 shown.

[0048] The utility model provides a hollow column structure prefabricated by welding and assembling a non-disassembly formwork, which has strong rigidity, simple preparation process and no need for special equipment; the column reinforcement system 1 and the non-disassembly formwork 3 are produced in parallel, and are assembled and formed, which greatly improves production efficiency; the reinforcement processing accuracy and the non-disassembly formwork forming accuracy are both controllable, and the prefabricated components formed by assembly have high forming accuracy; and pre-buried wire pipes, wire boxes, etc. are easy to implement.

[0049] The above description is only an implementation method of the utility model and is not intended to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, expansion, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.

Claims

1. A prefabricated hollow column structure with welded assembly and non-disassembly template, characterized in that: The invention comprises a column reinforcement system (1), a reinforcement protection layer pad (2) and a formwork-free hollow column, wherein the column reinforcement system (1) is arranged inside the formwork-free hollow column, the column reinforcement system (1) and the formwork-free hollow column are isolated by a plurality of reinforcement protection layer pads (2), and the formwork-free hollow column is a rectangular parallelepiped structure enclosed and welded by four formworks (3).

2. The prefabricated hollow column structure of welded assembly and non-disassembly formwork according to claim 1 is characterized in that: The non-disassembly formwork (3) comprises a non-disassembly formwork body (301) and end inlays (302) covering both sides of the non-disassembly formwork body (301), wherein the non-disassembly formwork body (301) is cast by concrete, and the end inlays (302) and the non-disassembly formwork body (301) are cast as one body.

3. The prefabricated hollow column structure of welded assembly and non-disassembly formwork according to claim 2 is characterized in that: The end inlay piece (302) is arranged along the length direction of the non-disassembly template body (301) and is fixed by right-angle inlay or oblique-angle inlay.

4. The prefabricated hollow column structure of welded assembly and non-disassembly formwork according to claim 3 is characterized in that: The end inlay (302) is formed by bending a metal plate, and comprises an inlay base plate (3021) and an inlay end plate (3022) at an acute angle or a right angle, wherein the inlay base plate (3021) is coated on the outer surface of the non-disassembly template body (301), and the inlay end plate (3022) is coated on the outer side of the side end surface of the non-disassembly template body (301).

5. The prefabricated hollow column structure of welded assembly and non-disassembly formwork according to claim 4 is characterized in that: The end of the inlay end plate (3022) is bent inward to form an end plate folding edge (3023), and the end plate folding edge (3023) is parallel to the inlay bottom plate (3021). The thickness of the non-disassembly template body (301) is controlled by the end plate folding edge (3023) and the inlay bottom plate (3021).

6. The prefabricated hollow column structure of welded assembly and non-disassembly formwork according to claim 4 or 5, characterized in that: The end of the inlay bottom plate (3021) is bent inwardly to form a bottom plate folding edge (3024), and the bottom plate folding edge (3024) is cast inside the non-disassembly template body (301).

7. The prefabricated hollow column structure of welded assembly and non-disassembly formwork according to claim 5 is characterized in that: The outer surface of the inlay base plate (3021) and the non-disassembly template body (301) are coplanar; the inner surface of the end plate folding edge (3023) and the non-disassembly template body (301) are coplanar.

8. The prefabricated hollow column structure of welded assembly and non-disassembly formwork according to claim 2 is characterized in that: The end inlays (302) of two adjacent non-disassembly templates (3) are fitted together, connected on the inside via the non-disassembly template inner welding points (5), and on the outside via the non-disassembly template outer welding points (6).

9. The prefabricated hollow column structure of welded assembly and non-disassembly formwork according to claim 2 is characterized in that: The non-disassembly template body (301) is provided with a reserved hole (303).

10. The prefabricated hollow column structure of welded assembly and non-disassembly formwork according to claim 9 is characterized in that: The two opposite non-disassembly templates (3) are connected via tension bolts (4) passing through the reserved holes (303).

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