Disassembly-free prefabricated constructional column concrete formwork structure and construction method thereof

Abstract

The invention discloses a disassembly-free prefabricated constructional column concrete formwork structure and a construction method thereof.The disassembly-free prefabricated constructional column concrete formwork structure comprises six kinds of prefabricated formworks, and on the premise that the size of an original constructional column structure is not changed, the concrete formworks are used for replacing a traditional wood formwork structure, the positions of the formworks are reasonably distributed, and the construction efficiency is improved. The problem of constructional column pouring quality caused by deformation due to repeated use of the formwork in secondary structure constructional column construction is solved, and meanwhile the problems that the construction period is too long, the labor, formwork and scaffold renting cost is high, and the formwork damage rate is high are solved. The method has the advantages of being convenient to operate, easy to install, high in precision, environmentally friendly and the like, and has high practical application and popularization value.

Description

Technical Field

[0001] The present invention relates to the field of building construction, and in particular to a disassembly-free prefabricated structural column concrete formwork structure and a construction method thereof. Background Art

[0002] Structural columns are widely used in modern buildings as a building structure that can enhance the integrity and stability of buildings. Secondary structural columns are usually constructed using wooden formwork and steel pipe keel scaffolding as the column formwork system. The installation process is cumbersome. During concrete pouring, the formwork is struck with a rubber hammer while the concrete is being poured. Repeated use can cause the formwork to deform, easily affecting the pouring quality of the structural column. Furthermore, due to the construction cycle, the rental period for formwork and scaffolding is long, resulting in high measures and labor costs. This construction method also results in a high formwork damage rate, which is not in line with modern green and environmentally friendly concepts. Therefore, how to complete structural column construction in a short period of time while ensuring quality and quantity while reducing construction costs is a problem that needs to be solved. Summary of the Invention

[0003] The purpose of the present invention is to provide a disassembly-free prefabricated structural column concrete formwork structure and a construction method thereof, so as to solve the problem of structural column casting quality caused by repeated use and deformation of the formwork in the construction of secondary structure structural columns, and also to solve the problems of long construction period, high labor, formwork, and scaffolding rental costs, and high formwork damage rate.

[0004] To achieve the above object, the present invention includes the following contents: The present invention provides a disassembly-free prefabricated structural column concrete formwork structure, which is characterized by: The concrete formwork is divided into 6 types, namely 1# formwork, 2# formwork, 3# formwork, 4# formwork, 5# formwork and 6# formwork.

[0005] Preferably, the cross section of the 1# formwork (1) is U-shaped, the formwork length is 260 mm, the width is 200 mm, the height is 250 mm, and the thickness is 25 mm. The concrete strength is equivalent to the design strength of the structural column concrete.

[0006] Preferably, the cross section of the 2# formwork (2) is U-shaped, the formwork length is 200 mm, the width is 200 mm, the height is 250 mm, and the thickness is 25 mm. The concrete strength is equivalent to the design strength of the structural column concrete.

[0007] Preferably, the cross section of the 3# formwork (3) is U-shaped, the formwork length is 260 mm, the width is 200 mm, the height is 250 mm, and the thickness is 25 mm. The concrete strength is equivalent to the design strength of the structural column concrete. A 100 mm * 100 mm casting hole is provided at the upper end of one long side of the formwork.

[0008] Preferably, the cross section of the 4# formwork (4) is U-shaped, the formwork length is 320 mm, the width is 200 mm, the height is 250 mm, and the thickness is 25 mm. The concrete strength is equivalent to the design strength of the structural column concrete.

[0009] Preferably, the cross section of the 5# formwork (5) is convex, with a convex single-side opening, a formwork length of 320 mm, a width of 200 mm, a height of 250 mm, and a thickness of 25 mm, and the concrete strength is equivalent to the design strength of the structural column concrete.

[0010] Preferably, the cross section of the 6# formwork (6) is cross-shaped, with a single-side opening, a formwork length of 320 mm, a width of 200 mm, a height of 250 mm, and a thickness of 25 mm, and the concrete strength is equivalent to the design strength of the structural column concrete.

[0011] The present invention also provides a construction method for a disassembly-free prefabricated structural column concrete formwork structure, which is characterized by comprising the following steps: S1: Deepen the drawings and design the position and specific dimensions of the structural columns according to the construction drawings.

[0012] S2: Prefabrication of structural column concrete formwork: Determine the size and strength of the structural column concrete formwork according to the detailed design drawings, calculate the required quantity of various structural column concrete formworks and prefabricate them according to demand.

[0013] S3: Measurement and layout: Lay out the walls according to the construction drawings and complete the acceptance.

[0014] S4: Anchoring of structural columns: Tie structural column reinforcement according to the construction drawings. The structural column reinforcement is equipped with main reinforcement and stirrups. The upper and lower main reinforcements of the structural column are anchored and overlapped. The stirrups in the overlapped connection area are denser. When overlapping the reinforcement joints, all longitudinal reinforcements are overlapped in the same connection area. The overlap length is not less than 50 times the diameter of the reinforcement. The anchoring depth of the wall beam is 15 times the diameter of the longitudinal reinforcement. The anchoring depth of the slab is the slab thickness minus the thickness of the bottom protective layer and is not less than 12 times the diameter of the reinforcement.

[0015] S5: Wall construction: After the reinforcement of the structural column is tied, the concrete formwork of the structural column is built at the structural column position. The concrete formwork is divided into 6 categories, namely 1# formwork, 2# formwork, 3# formwork, 4# formwork, 5# formwork, and 6# formwork; when starting to lay the wall, first place the corresponding 1# formwork, 4# formwork, 5# formwork, and 6# formwork on the first layer of the structural column position, place 2# formwork on the second layer, place 1# formwork, 4# formwork, 5# formwork, and 6# formwork on the third layer, and place 2# formwork on the fourth layer, and then construct in sequence according to the wall height; place the corresponding structural column formwork in sequence for every 250mm increase in the masonry height, and place 3# formwork when the last layer of the structural column formwork is laid.

[0016] S6: Casting of structural columns: After the construction of the structural column wall is completed, let it stand still. After the standing still is completed, pour concrete through the casting holes reserved on the 3# formwork.

[0017] Furthermore, the step S2 includes: S21: Use BIM software to classify the types of structural columns in the design drawings and calculate the size and strength of the concrete formwork.

[0018] S22: Determine the prefabrication site for the structural column formwork and prepare the prefabrication raw materials.

[0019] S23: According to the detailed design drawings, prefabricate the structural column formwork at the prefabrication site according to the construction process, and transport it to the construction site after passing the quality inspection.

[0020] Furthermore, step S4 includes: S41: When tying the reinforcement of the structural columns, tie reinforcement should be reserved in the wall.

[0021] S42: After the tie reinforcement is tied, reserve the tooth pattern according to the position in the construction drawing.

[0022] Furthermore, step S5 further includes: S51: After the wall is built, clean up the debris at the base of the column and rinse it with a high-pressure water gun to keep the casting surface clean.

[0023] S52: The masonry and structural column formwork of each layer should be accurately positioned without leaving any gaps.

[0024] S53: Concrete pads are provided between the precast blocks and the structural column reinforcements.

[0025] Compared with the prior art, the present invention has the following beneficial effects: 1. A disassembly-free prefabricated structural column concrete formwork structure is adopted, which has the advantages of easy operation, simple installation, high precision, etc., and has strong practical application and promotion value.

[0026] 2. No formwork scaffolding is required during the construction of the structural column, which improves the construction progress. The construction method is safe and reliable, and the quality is guaranteed. The formwork is used as the template, and the materials used for supporting the structural column formwork scaffolding in the existing construction method are reduced, thereby avoiding material waste, reducing formwork consumption, and being green and environmentally friendly.

[0027] 3. The corresponding and matching formwork can be prefabricated according to the different design requirements of the construction site. It has strong versatility. The prefabricated structural column concrete formwork is easy to make, energy-saving and environmentally friendly, and easy to install in actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Figure 1 Schematic diagram of the 1# formwork in the prefabricated structural column concrete formwork structure that does not require disassembly.

[0030] Figure 2 Schematic diagram of the 2# formwork in the prefabricated structural column concrete formwork structure that does not require disassembly.

[0031] Figure 3 Schematic diagram of the 3# formwork in the prefabricated structural column concrete formwork structure that does not require disassembly.

[0032] Figure 4 Schematic diagram of the 4# formwork in the prefabricated structural column concrete formwork structure that does not require disassembly.

[0033] Figure 5 Schematic diagram of the 5# formwork in the prefabricated structural column concrete formwork structure that does not require disassembly.

[0034] Figure 6 Schematic diagram of the 6# formwork in the prefabricated structural column concrete formwork structure that does not require disassembly.

[0035] Figure 7 This is a plan diagram of the first layer of concrete wall construction for structural columns.

[0036] Figure 8 This is a plan diagram of the second floor of structural column concrete wall construction.

[0037] Figure 9 This is a schematic diagram of the facade of the structural column concrete wall.

[0038] Reference numerals: 1-1# mold shell, 2-2# mold shell, 3-3# mold shell, 4-4# mold shell, 5-5# mold shell, 6-6# mold shell. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention. Example

[0040] According to the above-mentioned non-disassembly prefabricated structural column concrete formwork structure: The concrete formwork is divided into 6 types, namely 1# formwork, 2# formwork, 3# formwork, 4# formwork, 5# formwork and 6# formwork.

[0041] In this embodiment, refer to Figure 1 The cross section of the 1# formwork 1 is U-shaped, with a formwork length of 260mm, a width of 200mm, a height of 250mm, and a thickness of 25mm. The concrete strength is equivalent to the design strength of the structural column concrete.

[0042] In this embodiment, refer to Figure 2 The cross section of the 2# formwork 2 is U-shaped, with a formwork length of 200mm, a width of 200mm, a height of 250mm, and a thickness of 25mm. The concrete strength is equivalent to the design strength of the structural column concrete.

[0043] In this embodiment, refer to Figure 3 The cross section of the 3# formwork 3 is U-shaped, with a formwork length of 260mm, a width of 200mm, a height of 250mm, and a thickness of 25mm. The concrete strength is equivalent to the design strength of the structural column concrete. A 100mm*100mm casting hole is provided at the upper end of one side of the long side of the formwork.

[0044] In this embodiment, refer to Figure 4 The cross section of the 4# formwork 4 is U-shaped, with a formwork length of 320mm, a width of 200mm, a height of 250mm, and a thickness of 25mm. The concrete strength is equivalent to the design strength of the structural column concrete.

[0045] In this embodiment, refer to Figure 5 The cross section of the 5# formwork 5 is convex, with a convex single-side opening. The formwork length is 320mm, width is 200mm, height is 250mm, and thickness is 25mm. The concrete strength is equivalent to the design strength of the structural column concrete.

[0046] In this embodiment, refer to Figure 6 The cross section of the 6# formwork 6 is cross-shaped, with a single-side opening. The formwork length is 320mm, width is 200mm, height is 250mm, and thickness is 25mm. The concrete strength is equivalent to the design strength of the structural column concrete.

[0047] The present invention also provides a construction method for a disassembly-free prefabricated structural column concrete formwork structure, the construction steps of which include: S1: Deepen the drawings and design the position and specific dimensions of the structural columns according to the construction drawings.

[0048] S2: Prefabrication of structural column concrete formwork: Determine the size and strength of the structural column concrete formwork according to the detailed design drawings, calculate the required quantity of various structural column concrete formworks and prefabricate them according to demand.

[0049] Meanwhile, step S2 includes: S21: Use BIM software to classify the types of structural columns in the design drawings and calculate the size and strength of the concrete formwork.

[0050] S22: Determine the prefabrication site for the structural column formwork and prepare the prefabrication raw materials.

[0051] S23: According to the detailed design drawings, prefabricate the structural column formwork at the prefabrication site according to the construction process, and transport it to the construction site after passing the quality inspection.

[0052] S3: Measurement and layout: Lay out the walls according to the construction drawings and complete the acceptance.

[0053] S4: Anchoring of structural columns: The structural column reinforcement is tied according to the construction drawings. The structural column reinforcement is equipped with main reinforcement and stirrups. The upper and lower main reinforcements of the structural column are anchored and overlapped. The stirrups in the overlapped connection area are denser. When the reinforcement is overlapped, all longitudinal reinforcements are overlapped in the same connection area. The overlap length is not less than 50 times the diameter of the reinforcement. After the structural column reinforcement is tied, the wall should be built first and then the concrete should be poured. At the structural column, tie bars should be left in the wall.

[0054] Before pouring concrete for structural columns, debris at the base of the columns should be cleaned and flushed with pressurized water before pouring concrete.

[0055] The depth of embedded reinforcement for wall beams is 15 times the diameter of the longitudinal reinforcement, and the depth of embedded reinforcement for slabs is the slab thickness minus the thickness of the bottom protective layer and is not less than 12 times the diameter of the reinforcement.

[0056] Meanwhile, step S4 includes: S41: When tying the reinforcement of the structural columns, tie reinforcement should be reserved in the wall.

[0057] S42: After the tie reinforcement is tied, reserve the tooth pattern according to the position in the construction drawing.

[0058] S5: Wall construction: refer to Figure 6-9After the structural column reinforcement is tied, the structural column concrete formwork is built at the structural column position. The concrete formwork is divided into 6 categories, namely 1# formwork 1, 2# formwork 2, 3# formwork 3, 4# formwork 4, 5# formwork 5, and 6# formwork 6; among them, 1# formwork 1, 2# formwork 2, and 4# formwork 4 have similar shapes, all of which are U-shaped, with only different lengths, and are suitable for masonry application scenarios with different numbers of floors. When starting masonry, first place the corresponding 1# formwork 1, 4# formwork 4, 5# formwork 5, and 6# formwork 6 at the first layer of the structural column. As the masonry height increases by 250mm, place the second layer of 2# formwork 2 at the structural column. The masonry height increases by another 250mm. Place the third layer of 1# formwork 1, 4# formwork 4, 5# formwork 5, and 6# formwork 6 at the structural column. The masonry height increases by another 250mm. Place the fourth layer of 2# formwork 2 at the structural column. Then, proceed sequentially according to the wall height. For every 250mm increase in masonry height, place the corresponding structural column formwork in sequence, layer by layer. Each layer of masonry ensures reliable and precise contact with the structural column formwork, leaving no gaps. Concrete pads are placed between the precast blocks and the structural column steel bars to ensure the thickness of the steel bar protective layer. Place 3# formwork 3 when the last layer of formwork for the structural column is laid.

[0059] At the same time, step S5 also includes: S51: After the wall is built, clean up the debris at the base of the column and rinse it with a high-pressure water gun to keep the casting surface clean.

[0060] S52: The masonry and structural column formwork of each layer should be accurately positioned without leaving any gaps.

[0061] S53: Concrete pads are provided between the precast blocks and the structural column reinforcements.

[0062] S6: Casting of structural columns: After the construction of the structural column wall is completed, it is left to stand. After the standing is completed, concrete is poured through the casting holes reserved on the 3# formwork 3. After the casting of the structural column is completed, the use of this structural column formwork is completed.

[0063] It should also be noted that, based on the construction progress within the building structure, before the construction of the structural column structure, various structural column types will be randomly selected as experimental areas, with the structure with the largest number of structures being mandatory. A total of 10 experimental areas will be tested, and the finished products in the experimental areas will be tested. Only after passing the tests can formal construction begin.

[0064] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A disassembly-free prefabricated structural column concrete formwork structure, characterized by: The concrete formwork structure is divided into 6 types, namely 1# formwork (1), 2# formwork (2), 3# formwork (3), 4# formwork (4), 5# formwork (5), and 6# formwork (6); The cross section of the 1# formwork (1) is U-shaped, with a formwork length of 260 mm, a width of 200 mm, a height of 250 mm, and a thickness of 25 mm. The concrete strength is equivalent to the design strength of the structural column concrete; The cross section of the 2# formwork (2) is U-shaped, with a formwork length of 200 mm, a width of 200 mm, a height of 250 mm, and a thickness of 25 mm. The concrete strength is equivalent to the design strength of the structural column concrete; The cross section of the 3# formwork (3) is U-shaped, with a formwork length of 260 mm, a width of 200 mm, a height of 250 mm, and a thickness of 25 mm. The concrete strength is equivalent to the design strength of the structural column concrete. A 100 mm * 100 mm casting hole is provided at the upper end of one long side of the formwork; The cross section of the 4# formwork (4) is U-shaped, the formwork length is 320 mm, the width is 200 mm, the height is 250 mm, and the thickness is 25 mm. The concrete strength is equivalent to the design strength of the structural column concrete. The cross section of the 5# formwork (5) is convex, with a convex single-side opening, a formwork length of 320 mm, a width of 200 mm, a height of 250 mm, and a thickness of 25 mm, and the concrete strength is equivalent to the design strength of the structural column concrete; The cross section of the 6# formwork (6) is cross-shaped, with a single-side opening. The formwork has a length of 320 mm, a width of 200 mm, a height of 250 mm, and a thickness of 25 mm. The concrete strength is equivalent to the design strength of the structural column concrete.

2. A construction method for realizing the non-disassembly prefabricated structural column concrete formwork structure according to claim 1, characterized in that: The following steps are involved: S1: Drawing deepening, deepening the design of the position and specific dimensions of the structural columns according to the construction drawings; S2: Prefabrication of structural column concrete formwork: Determine the size and strength of the structural column concrete formwork according to the detailed design drawings, calculate the required quantity of various structural column concrete formworks and prefabricate them according to demand; S3: Measurement and layout: Layout the walls according to the construction drawings and complete the acceptance inspection; S4: Structural column anchoring: Tie the structural column reinforcement according to the construction drawings. The structural column reinforcement is equipped with main bars and stirrups. The upper and lower main bars of the structural column are anchored and overlapped. The stirrups in the overlapped connection area are denser. When overlapping the steel bars, all longitudinal steel bars are overlapped in the same connection area, and the overlap length is not less than 50 times the steel bar diameter. The anchoring depth of the wall beam is 15 times the steel bar diameter of the longitudinal steel bar. The anchoring depth of the slab is the slab thickness minus the bottom cover thickness and is not less than 12 times the steel bar diameter. S5: Wall construction: After the structural column reinforcement is tied, the structural column concrete formwork is built at the structural column position. The concrete formwork is divided into 6 categories, namely 1# formwork (1), 2# formwork (2), 3# formwork (3), 4# formwork (4), 5# formwork (5), and 6# formwork (6); when starting to build, first place the corresponding 1# formwork (1), 4# formwork (4), 5# formwork (5), and 6# formwork (6) at the first layer of the structural column position, place 2# formwork (2) at the second layer, place 1# formwork (1), 4# formwork (4), 5# formwork (5), and 6# formwork (6) at the third layer, and place 2# formwork (2) at the fourth layer, and then build the wall in sequence according to the height; place the corresponding structural column formwork in sequence every time the building height increases by 250mm, and place 3# formwork (3) when the last layer of structural column formwork is built; S6: Casting of structural columns: After the masonry of the structural column wall is completed, it is left to stand. After the standing is completed, concrete is cast through the casting holes reserved on the 3# formwork (3).

3. The construction method of a non-disassembly prefabricated structural column concrete formwork structure according to claim 2, characterized in that: Step S2 includes: S21: Use BIM software to classify the types of structural columns in the design drawings and calculate the size and strength of the concrete formwork; S22: Determine the prefabrication site for the structural column formwork and prepare prefabrication raw materials; S23: According to the detailed design drawings, prefabricate the structural column formwork at the prefabrication site according to the construction process, and transport it to the construction site after passing the quality inspection.

4. The construction method of a non-disassembly prefabricated structural column concrete formwork structure according to claim 2, characterized in that: Step S4 includes: S41: When tying the structural column reinforcement, tie reinforcement should be reserved in the wall; S42: After the tie reinforcement is tied, reserve the tooth pattern according to the position in the construction drawing.

5. The construction method of a non-disassembly prefabricated structural column concrete formwork structure according to claim 2, characterized in that: Step S5 also includes: S51: After the wall is built, clean up the debris at the base of the column and rinse with a high-pressure water gun to keep the casting surface clean; S52: Each layer of construction masonry and structural column formwork should be accurately positioned without leaving any gaps; S53: Concrete pads are provided between the precast blocks and the structural column reinforcements.

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