Step-shaped independent foundation assembly type formwork structure

Abstract

The utility model discloses a step-shaped independent foundation assembly type formwork structure which comprises a concrete foundation cushion layer, the top of the concrete foundation cushion layer is provided with a first vertical formwork structure composed of four formworks, the cross section of the first vertical formwork structure is in a square shape, and the top of the first vertical formwork structure is provided with a horizontal formwork structure. The horizontal formwork structure is composed of four horizontal formworks which are placed along the horizontal edges of the first vertical formwork structure respectively, the four horizontal formworks are sequentially connected end to end, the axial direction of each horizontal formwork is connected with the axial direction of the adjacent horizontal formwork in a right-angle mode, the inward sides of the four horizontal formworks define square holes respectively, and the square holes are communicated with the first vertical formwork structure. The horizontal formworks are fixedly connected through fixing parts. The step-shaped foundation concrete pouring process is assisted to be continuous, one-time forming is achieved, construction is convenient, the step-shaped foundation construction efficiency and quality are improved, and the step-shaped foundation concrete pouring device can be widely applied to the field of independent foundation construction.

Description

Technical Field

[0001] The utility model relates to the construction of one-time casting and forming of independent foundations, in particular to a prefabricated formwork structure for stepped independent foundations. Background Technique

[0002] Stepped independent foundations are widely used in areas with good geological conditions of construction sites. Generally, the construction of stepped independent foundations mostly adopts the method of multiple pourings. Multiple pourings take a long time, there are bonding surfaces in the horizontal direction of the foundation, and the integrity is poor. One-time casting and forming mostly adopts the method of suspended formwork closure. After the formwork is set up, it is difficult to ensure the vibration quality of the poured concrete and the appearance quality of the concrete. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the above background technique and provide a prefabricated formwork structure for stepped independent foundations, so as to solve the problems that the integrity is difficult to ensure and the construction efficiency is low in the pouring process of the existing technology for stepped independent foundations, realize the rapid splicing and assembly of the formwork, close the top of the bottom step of the stepped independent foundation in a short time, facilitate the continuous pouring process of the stepped foundation concrete, form it at one time, facilitate construction, and improve the construction efficiency and quality of the stepped foundation.

[0004] A prefabricated formwork structure for stepped independent foundations provided by the utility model includes a concrete foundation cushion. A first vertical formwork structure with a square cross-section composed of four formworks is arranged on the top of the concrete foundation cushion. A horizontal formwork structure is arranged on the top of the first vertical formwork structure. The horizontal formwork structure is composed of four horizontal formworks respectively placed along each horizontal edge of the first vertical formwork structure. The four horizontal formworks are connected end to end in sequence. The axial direction of each horizontal formwork is connected at a right angle to the axial direction of the adjacent horizontal formwork. Square holes are respectively enclosed on the inner sides of the four horizontal formworks. The horizontal formworks are fixedly connected to each other by fixing components.

[0005] In the above technical solution, the fixing component includes a wooden square backrest with its length direction arranged along the axial direction of each horizontal formwork and its bottom connected to the top of the horizontal formwork. The wooden square backrests in the four directions are connected end to end in sequence. The overall horizontal formwork is in a vertical and horizontal structure, and the adjacent wooden square backrests are connected by a mortise and tenon structure.

[0006] In the above technical solution, the length of the wooden square backrest in each direction is greater than the axial dimension of the horizontal formwork. The tail of the wooden square backrest in this direction is flush with the tail of the horizontal formwork, and the head of the wooden square backrest in this direction extends out of the head of the horizontal formwork and is connected to the tail of the adjacent horizontal formwork and abuts against the outer side of the tail of the adjacent horizontal formwork.

[0007] In the above technical solution, a groove is provided at the bottom of each wooden square back brace between the head of the coaxial horizontal formwork and the tail of the adjacent horizontal formwork. A cover plate is embedded in the groove, and the cross-section of the cover plate in the length direction is arranged along the axial direction of the wooden square back brace. One side of the cover plate covers the head of the horizontal formwork coaxial with the wooden square back brace, and the other side covers the tail of the adjacent horizontal formwork. The cover plate seals the gap between the horizontal formwork coaxial with the wooden square back brace and the adjacent horizontal formwork.

[0008] In the above technical solution, an upward-opening mortise upper opening is provided at the tail of each wooden square back brace close to the coaxial horizontal formwork, and a downward-opening mortise lower opening is provided at the head of each wooden square back brace close to the adjacent horizontal formwork. The mortise lower opening at the head of one wooden square back brace is inserted into the corresponding mortise upper opening of the adjacent wooden square back brace.

[0009] In the above technical solution, second vertical formwork structures with a square cross-section composed of four formworks are respectively provided at the edges of the square holes surrounded by the four horizontal formworks.

[0010] In the above technical solution, the horizontal formwork is connected to the corresponding formworks in the first vertical formwork structure and the second vertical formwork structure through formwork fixing devices. The formwork fixing devices include connecting rods in a "U" shape or an "L" shape. Openings facing outwards are respectively provided at both ends of the connecting rod, and the two ends of the "U" shape cover are parallel to the connecting rod respectively. An expansion nut embedded in the horizontal formwork or the vertical formwork is provided on the outer side of one end of the "U" shape cover. An expansion screw is provided between the two ends of the "U" shape cover. The body of the expansion screw is perpendicular to the connecting rod. The expansion bolt formed by the cooperation of the expansion nut and the expansion screw fixedly connects the horizontal formwork to the first vertical formwork structure or the second vertical formwork structure.

[0011] In the above technical solution, the side walls of the first vertical formwork structure and the second vertical formwork structure are fixedly connected to the pit wall through multiple round steel pipes.

[0012] In the above technical solution, each round steel pipe is connected through multiple short pipes, and the short pipes are connected through steel pipe fasteners. The end of each round steel pipe is connected to the pit wall through a wooden square gasket.

[0013] In the above technical solution, the horizontal formwork, the wooden square back brace and the cover plate are connected through iron nails; a horizontal formwork structure is provided at the top of the second vertical formwork structure.

[0014] The stepped independent foundation assembled formwork structure of the present utility model has the following beneficial effects:

[0015] First, the utility model is reasonably designed. The modular assembled formwork, wooden square back ribs and cover plate are fixed through the formwork fixing device, which greatly simplifies the formwork installation process, improves the formwork installation efficiency, and increases the reuse rate of the formwork due to the assembled module installation, thus saving costs and being more economically beneficial.

[0016] Second, the stepped independent foundation adopting the utility model can be cast in one time, ensuring the integrity of the concrete foundation structure and being beneficial to structural safety.

[0017] Third, after the bottom layer of concrete is poured and vibrated compactly, the top formwork can be closed in the utility model, avoiding the problem of non-compact vibration of the bottom layer of concrete in one-time forming pouring and ensuring one-time pouring. Therefore, the utility model not only improves the construction efficiency but also ensures the construction quality.

[0018] In summary, the utility model provides a stepped independent foundation assembled formwork structure, which is convenient for rapid on-site installation, ensures the quality of one-time pouring, solves the problems of non-compact vibration of the bottom layer of concrete in one-time pouring, low construction efficiency and poor integrity in multiple pourings. It helps to improve the formwork construction efficiency and ensure the construction quality of the stepped independent foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of the stepped independent foundation assembled formwork structure of the utility model;

[0020] Figure 2 is Figure 1 the structural top view of;

[0021] Figure 3 is the structural schematic diagram of a single-piece horizontal formwork in the stepped independent foundation assembled formwork structure of the utility model;

[0022] Figure 4 is the structural connection schematic diagram of a single-piece horizontal formwork and the wooden square back ribs connected thereto in the stepped independent foundation assembled formwork structure of the utility model;

[0023] Figure 5 is Figure 4 the structural sectional view of;

[0024] Figure 6 is the structural schematic diagram of the wooden square back ribs in the stepped independent foundation assembled formwork structure of the utility model;

[0025] Figure 7 is Figure 6 the structural top view of;

[0026] Figure 8 is the structural schematic diagram of a single-piece cover plate in the stepped independent foundation assembled formwork structure of the utility model;

[0027] Figure 9 This is the front view of the structure of the formwork fixing device in the stepped independent foundation assembled formwork structure of the present utility model;

[0028] Figure 10 This is the right view of the structure of the formwork fixing device in the stepped independent foundation assembled formwork structure of the present utility model;

[0029] Figure 11 This is the top view of the structure of the formwork fixing device in the stepped independent foundation assembled formwork structure of the present utility model;

[0030] Figure 12 This is the schematic diagram of the structure of each round steel pipe in the stepped independent foundation assembled formwork structure of the present utility model;

[0031] Figure 13 This is the schematic diagram of the short pipe structure of each round steel pipe in the stepped independent foundation assembled formwork structure of the present utility model;

[0032] Figure 14 This is the schematic diagram of the steel pipe fastener structure of each round steel pipe in the stepped independent foundation assembled formwork structure of the present utility model. Specific embodiments

[0033] The present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments, but the embodiments should not be construed as limiting the present utility model.

[0034] See Figure 1 As shown in, a stepped independent foundation assembled formwork structure of the present utility model includes a concrete foundation cushion 1. A first vertical formwork structure 2 with a square cross-section composed of four formworks is provided on the top of the concrete foundation cushion 1. A horizontal formwork structure, a fixing member, a formwork fixing device 10 and multiple round steel pipes 15 are respectively provided on the first vertical formwork structure 2.

[0035] See Figures 2 to 3 As shown in, the horizontal formwork structure is composed of four horizontal formworks 3 respectively placed along each horizontal edge of the first vertical formwork structure 2. The four horizontal formworks 3 are connected end to end in sequence. The axial direction of each horizontal formwork 3 is connected at a right angle to the axial direction of the adjacent horizontal formwork 3. The inner sides of the four horizontal formworks 3 enclose a square hole respectively. The horizontal formworks 3 are fixedly connected to each other by fixing members.

[0036] See Figures 4 to 5, the fixing member includes a wooden square back brace 4 whose length direction is arranged along the axial direction of each horizontal formwork 3, and the bottom of which is connected to the top of the horizontal formwork 3. In one or more embodiments, two wooden square back braces 4 are provided on the top of each horizontal formwork 3. The wooden square back braces 4 in the four directions are connected end to end in sequence. The horizontal formwork 3 as a whole has a vertical and horizontal structure, and adjacent wooden square back braces 4 are connected by a mortise and tenon structure. In one or more embodiments, refer to Figures 6 to 7 , an upward-opening mortise upper mouth 7 is provided at the tail of each wooden square back brace 4 close to the horizontal formwork 3 in the same axial direction, and a downward-opening mortise lower mouth 8 is provided at the head of each wooden square back brace 4 close to the adjacent horizontal formwork 3. The mortise lower mouth 8 at the head of one wooden square back brace 4 is inserted into the corresponding mortise upper mouth 7 of the adjacent wooden square back brace 4.

[0037] The length of the wooden square back brace 4 in each direction is greater than the axial dimension of the horizontal formwork 3. The tail of the wooden square back brace 4 in this direction is flush with the tail of the horizontal formwork 3, and the head of the wooden square back brace 4 in this direction extends beyond the head of the horizontal formwork 3 and is connected to the tail of the adjacent horizontal formwork 3 and reaches the outer side edge of the tail of the adjacent horizontal formwork 3.

[0038] Refer to Figure 8 , a groove 5 is provided at the bottom of each wooden square back brace 4 between the head of the horizontal formwork 3 in the same axial direction and the tail of the adjacent horizontal formwork 3. A cover plate 6 whose length direction is arranged along the axial section of the wooden square back brace 4 is embedded in the groove 5. One side of the cover plate 6 covers the head of the horizontal formwork 3 in the same axial direction as the wooden square back brace 4, and the other side covers the tail of the adjacent horizontal formwork 3. The cover plate 6 seals the gap between the horizontal formwork 3 in the same axial direction as the wooden square back brace 4 and the adjacent horizontal formwork 3.

[0039] The horizontal formwork structure is composed of the horizontal formwork 3 and the cover plate 6. The fixing member is composed of the wooden square back braces 4. Grooves are opened on the wooden square back braces 4 and they are spliced together through a mortise and tenon structure, which can realize the mutual mortise and tenon connection and fixation between the horizontal formwork structure and the fixing member. Through the reinforcement of the formwork fixing device 10, the rapid assembly construction of the formwork is realized, and then the first vertical formwork structure 2 and the second vertical formwork structure 9 are fixed by using multiple round steel pipes 15 to form a complete stepped independent foundation assembled formwork structure.

[0040] Second vertical formwork structures 9 whose cross-sections are square and composed of four formworks are respectively provided at the edges of the square holes surrounded by the four horizontal formworks 3. In one or more embodiments, a horizontal formwork structure is provided at the top of the second vertical formwork structure 9.

[0041] The horizontal formwork 3, cover plate 6, and wooden square back ribs 4 are all standard parts, and the shapes and sizes of the same type of components are the same. Two slots are cut on the same side at one end of the wooden square back ribs 4, with a depth of not less than 30 mm, and two slots are cut on the other side at the other end, with a depth of not less than 30 mm. The slots at both ends are symmetrically arranged on the wooden square back ribs 4, enabling mortise and tenon connection between the slots on the wooden square back ribs 4 and the slots on the wooden square back ribs 4 in different directions of another horizontal formwork structure.

[0042] The horizontal formwork structures are interconnected, and a cover plate 6 with a width of 100 mm is embedded at the joint of the bottom horizontal formwork 3 to ensure that the joint at the joint of the horizontal formwork 3 is tight and flat. In one or more embodiments, both the horizontal formwork 3 and the cover plate 6 are plywood.

[0043] The horizontal formworks 3 in the horizontal formwork structure are interconnected, and their positional relationship is perpendicular to each other and connected end to end.

[0044] The horizontal formwork structure and the fixing components are fixed by iron nails with the 15 - 18 mm horizontal formwork 3, cover plate 6, and wooden square back ribs 4 with a height of not less than 100 mm. The fixing should be firm and the joints should be flat.

[0045] The wooden square back ribs 4 should be slotted at the specified position, with a slot depth of not less than 50 mm, facilitating the rapid assembly between the horizontal formwork 3 and the cover plate 6 in the later stage.

[0046] The horizontal formwork structure and the fixing components are all firmly fixed by iron nails to form a whole.

[0047] The horizontal formwork structure is alternately laminated through the slots of the wooden square back ribs 4 thereon, and the formwork fixing device 10 is used to assemble 4 horizontal formworks 3 and the cover plate 6 into the formwork for the upper surface of the step of a closed stepped independent foundation.

[0048] The corresponding formworks of the horizontal formwork 3 and the first vertical formwork structure 2 and the second vertical formwork structure 9 are connected by the formwork fixing device 10. Refer to Figures 9 to 11 , the formwork fixing device 10 includes a connecting rod 11 in a "U" shape or an "L" shape. Both ends of the connecting rod 11 are respectively provided with a "U" - shaped cover 12 with an opening facing outwards. Both ends of the "U" - shaped cover 12 are parallel to the connecting rod 11 respectively. An expansion nut 13 embedded in the horizontal formwork 3 or the vertical formwork is provided on the outer side of one end of the "U" - shaped cover 12. An expansion screw 14 is provided between both ends of the "U" - shaped cover 12. The rod body of the expansion screw 14 is perpendicular to the connecting rod 11. The expansion bolt formed by the cooperation of the expansion nut 13 and the expansion screw 14 fixes and connects the horizontal formwork 3 and the first vertical formwork structure 2 or the second vertical formwork structure 9.

[0049] The template fixing device 10 is machined from a steel plate with a thickness of not less than 4 mm, and the fixing width range of the nut snap clamp on each template is not less than 100 mm.

[0050] The side walls of the first vertical formwork structure 2 and the second vertical formwork structure 9 are fixedly connected to the pit wall through a plurality of round steel pipes 15. In one or more embodiments, see Figures 12 to 14 Each of the round steel pipes 15 is connected through a plurality of short pipes, and the short pipes are connected to each other through steel pipe fasteners 16 . The end of each of the round steel pipes 15 is connected to the pit wall through a wooden square gasket 17 .

[0051] The first vertical formwork structure 2 , the horizontal formwork structure and the second vertical formwork structure 9 are fixed to the foundation pit slope by a plurality of round steel pipes 15 .

[0052] See also Figures 1 to 14 An embodiment of the utility model provides a stepped independent foundation assembled formwork structure. In this embodiment, the horizontal formwork 3 and the corresponding formworks in the first vertical formwork structure 2 and the second vertical formwork structure 9 are fixed into shape by a formwork fixing device 10 and connected to a round steel pipe 15 to transmit the force to the foundation pit slope.

[0053] When constructing a step-shaped independent foundation, the first vertical formwork structure 2 and the second vertical formwork structure 9 are first supported on the concrete foundation cushion layer 1, and fixed to the foundation pit slope through the round steel pipe 15. Then the bottom layer concrete is poured, and after vibrating and compacting, the assembled formwork at the top of the bottom layer step is closed with the horizontal formwork 3, the wooden back rib 4 and the cover plate 6, and fixed with the formwork fixing device 10, and the upper layer step concrete is poured continuously.

[0054] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0055] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A step-shaped independent foundation assembled formwork structure, comprising a concrete foundation cushion layer (1), characterized in that: A first vertical formwork structure (2) with a square cross-section composed of four formworks is provided on the top of the concrete foundation cushion layer (1); a horizontal formwork structure is provided on the top of the first vertical formwork structure (2); the horizontal formwork structure is composed of four horizontal formworks (3) respectively placed along the horizontal edges of the first vertical formwork structure (2); the four horizontal formworks (3) are connected end to end in sequence; each horizontal formwork (3) is axially connected to the adjacent horizontal formwork (3) at a right angle; the four horizontal formworks (3) respectively enclose a square hole on one side facing inwards; and the horizontal formworks (3) are fixedly connected by fixing components.

2. The step-shaped independent foundation assembled formwork structure according to claim 1 is characterized in that: The fixing component comprises a wooden back rib (4) which is arranged along the axial direction of each horizontal template (3) in the length direction and connected to the top of the horizontal template (3) at the bottom. The wooden back ribs (4) in the four directions are connected end to end in sequence. The horizontal template (3) is a vertical and horizontal structure as a whole. Adjacent wooden back ribs (4) are connected by mortise and tenon structures.

3. The step-shaped independent foundation assembled formwork structure according to claim 2 is characterized in that: The length of the wooden back rib (4) in each direction is greater than the axial dimension of the horizontal template (3), the tail of the wooden back rib (4) in this direction is flush with the tail of the horizontal template (3), and the head of the wooden back rib (4) in this direction extends out of the head of the horizontal template (3) and is connected to the tail of the adjacent horizontal template (3) and directly reaches the outer edge of the tail of the adjacent horizontal template (3).

4. The step-shaped independent foundation assembled formwork structure according to claim 3 is characterized in that: A groove (5) is provided at the bottom of each of the wooden back ribs (4) located between the head of the coaxial horizontal template (3) and the tail of the adjacent horizontal template (3), and a cover plate (6) is embedded in the groove (5) and is arranged along the axial section of the wooden back ribs (4) in the length direction. One side of the cover plate (6) covers the head of the coaxial horizontal template (3) with the wooden back ribs (4), and the other side covers the tail of the adjacent horizontal template (3). The cover plate (6) closes the gap between the coaxial horizontal template (3) with the wooden back ribs (4) and the adjacent horizontal template (3).

5. The step-shaped independent foundation assembled formwork structure according to claim 4 is characterized in that: Each of the wooden side ribs (4) is provided with an upwardly opening mortise and tenon upper opening (7) near the tail of the coaxial horizontal formwork (3), and each of the wooden side ribs (4) is provided with a downwardly opening mortise and tenon lower opening (8) near the head of the adjacent horizontal formwork (3), and the mortise and tenon lower opening (8) at the head of one wooden side rib (4) is inserted into the corresponding mortise and tenon upper opening (7) of the adjacent wooden side rib (4).

6. The step-shaped independent foundation assembled formwork structure according to claim 5 is characterized in that: The edges of the square holes surrounded by the four horizontal templates (3) are respectively provided with second vertical template structures (9) composed of four templates and having a square cross-section.

7. The step-shaped independent foundation assembled formwork structure according to claim 6 is characterized in that: The horizontal formwork (3) is connected to the corresponding formworks in the first vertical formwork structure (2) and the second vertical formwork structure (9) via a formwork fixing device (10). The formwork fixing device (10) comprises a U-shaped or L-shaped connecting rod (11). The two ends of the connecting rod (11) are respectively provided with U-shaped covers (12) with openings facing outwards. The two ends of the U-shaped cover (12) are respectively parallel to the connecting rod (11). An expansion nut (13) pre-buried in the horizontal formwork (3) or the vertical formwork is provided on the outer side of one end of the U-shaped cover (12). An expansion screw (14) is provided between the two ends of the U-shaped cover (12). The shaft of the expansion screw (14) is perpendicular to the connecting rod (11). The expansion bolt formed by the expansion nut (13) and the expansion screw (14) cooperates to fix the horizontal formwork (3) with the first vertical formwork structure (2) or the second vertical formwork structure (9).

8. The step-shaped independent foundation assembled formwork structure according to claim 7 is characterized in that: The side walls of the first vertical formwork structure (2) and the second vertical formwork structure (9) are fixedly connected to the pit wall via a plurality of round steel pipes (15).

9. The step-shaped independent foundation assembled formwork structure according to claim 8, characterized in that: Each of the round steel pipes (15) is connected via a plurality of short pipes, and the short pipes are connected via steel pipe fasteners (16). The end of each of the round steel pipes (15) is connected to the pit wall via a wooden square gasket (17).

10. The step-shaped independent foundation assembled formwork structure according to claim 9, characterized in that: The horizontal formwork (3), the wooden back ribs (4) and the cover plate (6) are connected by iron nails; a horizontal formwork structure is provided on the top of the second vertical formwork structure (9).

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