Buckling welding forming formwork-removal-free prefabricated hollow column

Abstract

The utility model belongs to the technical field of assembly type constructional engineering, and particularly relates to a buckling welding forming formwork-removal-free prefabricated hollow column. Comprising a column reinforcing steel bar system, a reinforcing steel bar protective layer cushion block and two mold-stripping-free shells, the two mold-stripping-free shells are buckled on the outer side of the column reinforcing steel bar system, the butt joint positions are welded, and the mold-stripping-free shells and the column reinforcing steel bar system are separated through the reinforcing steel bar protective layer cushion block. The non-dismantling formwork is fully prefabricated and formed through one-time splicing, and the production efficiency is high; no welding seam exists at the corner of the disassembly-free template, and the precision of the disassembly-free template for positioning and prefabricating the mold and the precision of a formed product are guaranteed; and secondary covering is carried out in abutted seam welding, and the appearance effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of assembled building engineering, and particularly relates to a prefabricated hollow column formed by butt-jointed welding and free-disassembly formwork. 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. Prefabricated hollow columns are popular vertical prefabricated components today, and are divided into two structural forms: solid and hollow. Prefabricated hollow columns have advantages in transportation and hoisting due to their light weight. The non-dismantling formwork hollow column is the latest form of prefabricated hollow column. It is a lightweight and high-strength non-dismantling formwork installed around the column reinforcement system. It is lighter in weight, more convenient to connect the reinforcement system, and has more competitive advantages in practical applications.

[0003] The existing structural forms of prefabricated hollow columns with no-disassembly formwork include four-sided cast-in-place structure, two-sided prefabrication and two-sided casting structure, four-sided prefabricated splicing structure, etc. Among them, the thickness of the four-sided no-disassembly formwork of the four-sided cast-in-place structure is inconsistent and the precision is poor. The reason is that during the preparation process, after the steel bar system is tied, the tension connectors are assembled, and then it is flipped three times and the no-disassembly formwork casting material is poured four times to finally form it. Due to the casting with a steel cage, it is extremely difficult to ensure the consistency of the thickness of the no-disassembly formwork, and special flipping equipment is required for multiple flippings. There are many procedures, high investment costs, and low production efficiency; especially the large positioning deviation of the steel cage makes the overall forming accuracy of the four-sided cast-in-place structure poor. The two-sided prefabrication and two-sided casting structures use the method of anchoring the no-disassembly formwork on the two sides (usually the two side faces) of the prefabricated steel cage, and the other two sides are formed by flipping and pouring. It is difficult to ensure the joint connection between the prefabricated non-disassembly formwork and the cast non-disassembly formwork, that is, gaps are very likely to appear at the junction, so that the two-sided prefabricated and two-sided cast structures leak during concrete pouring; because special flipping equipment is required, the production efficiency is low; the casting surface after the second flip is difficult to feed, and it is difficult to ensure the casting accuracy of the two-sided prefabricated and two-sided cast structures. The four-sided prefabricated splicing structure is to splice the prefabricated four-sided non-disassembly formwork on the outside of the steel bar system. It is easy to misalign at the four-sided corner splicing, and the molding accuracy is poor. After splicing, the four-sided through-seam welding is required, which greatly reduces the molding efficiency; after welding, the four-sided through-seam needs to be modified for a second time, which is difficult and has a poor appearance; the overall cost is high. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a simple and efficient prefabricated hollow column formed by a non-disassembly mold shell by interlocking welding, so as to solve the problems of low forming accuracy and high production cost of the existing structural form of prefabricated hollow columns without disassembly mold shells.

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

[0006] The utility model provides a prefabricated hollow column formed by a disassembly-free formwork shell by butt-joint welding, comprising a column reinforcement system, a reinforcement protection layer pad and two disassembly-free formwork shells, wherein the two disassembly-free formwork shells are buckled on the outside of the column reinforcement system and welded at the butt joints, and the disassembly-free formwork shells and the column reinforcement system are separated by the reinforcement protection layer pad.

[0007] The non-disassembly formwork shell includes a non-disassembly formwork bottom plate and non-disassembly formwork side plates vertically arranged on both sides of the non-disassembly formwork bottom plate, and the butt ends of the non-disassembly formwork side plates are embedded with joint embedded steel plates, and the two non-disassembly formwork shells are welded together through the joint embedded steel plates.

[0008] The pre-buried steel plates at the joint ends of the two non-disassembly formworks are welded by connecting welding plates.

[0009] An L-shaped joint groove is provided on the outer side of the butt joint end of the formwork-free side panel, one end of the joint embedded steel plate is embedded in the formwork-free side panel, and the other end is located in the joint groove, the connecting welding plate is fully accommodated in the joint groove, and both sides are respectively welded to the corresponding joint embedded steel plates.

[0010] The joint groove opening is filled with a joint groove repair material.

[0011] The non-disassembly formwork is a C-shaped or L-shaped prefabricated part formed by one-time casting of a high-strength material compatible with concrete.

[0012] The prefabricated hollow column formed by the butt-jointed welding and non-disassembly formwork shell is a rectangular parallelepiped structure.

[0013] The advantages and beneficial effects of the utility model are as follows: the utility model provides a prefabricated hollow column with a non-disassembly mold shell formed by butt-jointed welding, two non-disassembly molds are fully prefabricated and spliced ​​into shape at one time, there are no welds at the corners of the non-disassembly molds, the mold positioning prefabrication non-disassembly mold accuracy, the precision of the formed product is guaranteed, and the production efficiency is high; the seam welding is used for secondary covering, and the appearance effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a prefabricated hollow column formed by butt-joint welding and without disassembly of the mold shell according to the utility model;

[0015] Figure 2 for Figure 1 A partial enlarged view of the middle part;

[0016] Figure 3 It is a structural schematic diagram of the non-disassembly template in the utility model;

[0017] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0018] Figure 5This is one of the schematic diagrams of the preparation process of a prefabricated hollow column formed by butt-joint welding and without disassembly of the mold shell according to the utility model;

[0019] Figure 6 This is the second schematic diagram of the preparation process of a prefabricated hollow column formed by butt-jointed welding and without disassembly of the mold shell according to the utility model.

[0020] In the figure: 1-column reinforcement system, 2-rebar protective layer pad, 3-non-removal formwork shell, 301 is non-removal formwork bottom plate, 302 is non-removal formwork side plate, 303 is joint embedded steel plate, 304 is joint notch, 4-connecting welding plate, 5-joint groove repair material, 6-tension bolts. DETAILED DESCRIPTION

[0021] 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.

[0022] like Figure 1 , Figure 2 As shown, the utility model provides a prefabricated hollow column formed by a butt-jointed welding and non-disassembly formwork, comprising a column reinforcement system 1, a reinforcement protective layer pad 2 and two non-disassembly formworks 3, wherein the two non-disassembly formworks 3 are buckled on the outside of the column reinforcement system 1 and welded at the butt joint, and the non-disassembly formwork 3 and the column reinforcement system 1 are separated by the reinforcement protective layer pad 2.

[0023] In the embodiment of the utility model, the prefabricated hollow column formed by the butt-jointed welding and non-disassembly formwork is a rectangular parallelepiped structure. The column reinforcement system 1 is a rectangular parallelepiped structure, including main reinforcement and transverse stirrups connecting the main reinforcement. The reinforcement protection layer pad 2 is preferably made of plastic material, and the reinforcement protection layer pad 2 is padded between the column reinforcement system 1 and the non-disassembly formwork 3 to ensure that the outer periphery of the column reinforcement system 1 is wrapped with a certain amount of concrete to prevent the reinforcement from rusting.

[0024] like Figure 3 , Figure 4 As shown, in the embodiment of the utility model, the non-disassembly formwork 3 includes a non-disassembly formwork bottom plate 301 and non-disassembly formwork side plates 302 vertically arranged on both sides of the non-disassembly formwork bottom plate 301, and the butt ends of the non-disassembly formwork side plates 302 are embedded with joint embedded steel plates 303, and the two non-disassembly formwork shells 3 are welded together through the joint embedded steel plates 303.

[0025] Furthermore, the joint embedded steel plates 303 at the butt ends of the two non-disassembly formworks 3 are welded by connecting welding plates 4, and the connecting welding plates 4 ensure the joint connection between the two joint embedded steel plates 303, that is, no gap will appear at the junction, avoiding leakage during concrete pouring.

[0026] like Figure 2 , Figure 4As shown, in the embodiment of the utility model, an L-shaped joint notch 304 is provided on the outside of the butt end of the side plate 302 free of mold removal, one end of the joint embedded steel plate 303 is embedded inside the side plate 302 free of mold removal, and the other end is located in the joint notch 304, and the exposed part of the joint embedded steel plate 303 is convenient for seam welding. The connecting welding plate 4 is accommodated in the joint notch 304 throughout its length, and the two sides are respectively welded to the two joint embedded steel plates 303, and the joint notch 304 is convenient for joint welding operation.

[0027] Furthermore, the joint groove repair material 5 is filled in the joint groove 304 to provide secondary coverage for the joint welding to ensure the beautiful appearance.

[0028] In an embodiment of the utility model, the non-disassembly formwork 3 is a C-shaped or L-shaped prefabricated part formed by one-time casting of a high-strength material compatible with concrete. The high-strength material is UHPC (ultra-high performance concrete), high-strength cement fiberboard, etc. Because the two non-disassembly formworks 3 are connected in a buckle form, they can be two C-shaped buckles, or two L-shaped buckles, that is, two triangular buckles. This structural form allows the corners of the non-disassembly formwork 3 to be integrally formed, avoiding the problem of easy misalignment at the splicing of the four-sided corners and poor forming accuracy. Specifically, the column reinforcement system 1 and the non-disassembly formwork 3 are produced in parallel, assembled and formed, and the production efficiency is greatly improved; at the same time, pre-buried wire pipes, wire boxes, etc. are conveniently implemented.

[0029] The utility model provides a prefabricated hollow column formed by buckle welding without disassembly of the mold shell, and the preparation process is as follows:

[0030] Design stage: including the design of column reinforcement system 1 and non-removable formwork 3;

[0031] Prepare a column reinforcement system 1;

[0032] Preparation of non-disassembly mold shell 3: using traditional technology, both flat mold and vertical mold production are possible;

[0033] 3 pairs of mold shells without disassembly:

[0034] a) Install the first piece of free-to-remove mold shell 3;

[0035] b) The column reinforcement system 1 is placed in the non-removal formwork 3, and the column reinforcement system 1 and the non-removal formwork 3 are separated by the reinforcement protective layer pad 2, such as Figure 5 As shown;

[0036] c) Invert another non-disassembly formwork 3, and weld or tie the two ends of the non-disassembly formwork 3 to firmly connect the column reinforcement system 1 and the non-disassembly formwork 3 to prevent the two from separating and falling off;

[0037] The welding plates 4 are respectively welded in the joint notches 304 on both sides of the non-disassembly mold shell 3;

[0038] The joint notches 304 on both sides are filled with joint repair materials 5 respectively;

[0039] When the section of the prefabricated hollow column is too large, it is necessary to install additional tension bolts 6 to prevent the mold from expanding during concrete pouring. Figure 6 As shown;

[0040] The finishing is done and the prefabricated components are completed.

[0041] The utility model provides a prefabricated hollow column formed by a non-disassembly mold shell with butt-jointed welding. The non-disassembly mold shell is completely prefabricated and formed by one-time splicing. There is no weld at the corner of the non-disassembly mold shell. The mold positioning prefabrication non-disassembly mold accuracy is guaranteed, the precision of the formed product is guaranteed, and the production efficiency is high. The splicing welding is used for secondary covering, and the appearance effect is good.

[0042] 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 formed by butt-joint welding without disassembly of the mold shell, characterized in that: The invention comprises a column reinforcement system (1), a reinforcement protection layer pad (2) and two non-removal formworks (3), wherein the two non-removal formworks (3) are buckled onto the outside of the column reinforcement system (1) and welded at the joint, and the non-removal formworks (3) and the column reinforcement system (1) are separated by the reinforcement protection layer pad (2).

2. The prefabricated hollow column formed by butt-joint welding and non-disassembly mold shell according to claim 1 is characterized in that: The non-disassembly formwork shell (3) comprises a non-disassembly formwork bottom plate (301) and non-disassembly formwork side plates (302) vertically arranged on both sides of the non-disassembly formwork bottom plate (301), and joint pre-embedded steel plates (303) are embedded at the butt ends of the non-disassembly formwork side plates (302), and the two non-disassembly formwork shells (3) are welded together via the joint pre-embedded steel plates (303).

3. The prefabricated hollow column formed by buckle welding and non-disassembly formwork according to claim 2 is characterized in that: The joint embedded steel plates (303) at the butt ends of the two non-disassembly mold shells (3) are welded via a connecting welding plate (4).

4. The prefabricated hollow column formed by buckle welding and non-disassembly formwork according to claim 3 is characterized in that: An L-shaped joint notch (304) is provided on the outer side of the butt joint end of the mold-free side plate (302); one end of the joint pre-embedded steel plate (303) is pre-embedded inside the mold-free side plate (302), and the other end is located in the joint notch (304); the connecting welding plate (4) is accommodated in the joint notch (304) throughout its length, and the two sides are respectively welded to the corresponding joint pre-embedded steel plates (303).

5. The prefabricated hollow column formed by buckle welding and free-to-disassemble mold shell according to claim 4 is characterized in that: The joint groove opening (304) is filled with a joint groove repair material (5).

6. The prefabricated hollow column formed by buckle welding and free-to-disassemble shell according to claim 2 is characterized in that: The non-disassembly formwork (3) is a C-shaped or L-shaped prefabricated part formed by one-time casting of a high-strength material compatible with concrete.

7. The prefabricated hollow column formed by buckle welding and non-disassembly formwork according to any one of claims 1 to 6, characterized in that: The prefabricated hollow column formed by the butt-jointed welding and non-disassembly formwork shell is a rectangular parallelepiped structure.

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