Shear wall construction formwork structure

Abstract

The utility model provides a shear wall construction template structure, which changes a heavy shear wall template used in the conventional construction, so that the template can be simultaneously built on shear walls on two sides for construction, the difficulty of safety protection and dynamic management of upper and lower layers of an operation site is reduced, the potential safety hazard is eliminated, and the construction efficiency is improved. The utility model relates to a construction method of an expansion joint, belongs to the field of engineering construction industry, and discloses a construction method of an expansion joint, which can effectively shorten the construction period, solves the problems of mounting and dismounting of templates on two sides of the expansion joint, narrow working face and incapability of completing construction by using a conventional construction method, and comprises walls, the expansion joint and a pouring template, a horizontal limiting device is arranged between the wall body and the pouring formwork and longitudinally arranged on the upper end face of the wall body. The pouring template is arranged on the limiting device in parallel; a plurality of horizontal fixing holes are transversely formed in the pouring formwork, and a mounting pipe is arranged in each fixing hole in a sleeved mode. A matched fixing clamp is mounted in the mounting pipe; the fixing clamp penetrates through the pouring formwork.

Description

Technical Field

[0001] This utility model belongs to the field of engineering construction industry, and specifically relates to a shear wall construction formwork structure. Background Technology

[0002] During the construction of residential buildings, due to structural issues, expansion joints need to be left between the shear walls on both sides. Usually, formwork is used to pour concrete for the shear walls, but due to the size of the expansion joints, there are still many construction problems.

[0003] Due to the problem of excessively small expansion joints, the construction of formwork for shear walls on both sides of the expansion joint in previous projects was limited to the staggered construction method of shear walls on both sides, or the formwork was erected on site and then hoisted to the location of the shear wall to be poured. This made dynamic management of the operation site very difficult, the formwork installation cost high, and the construction cycle also had unstable factors. Utility Model Content

[0004] The purpose of this utility model is to provide a shear wall construction formwork structure that changes the heavy shear wall formwork used in the past. This allows for the simultaneous construction of formwork on both sides of the shear wall, reducing the difficulty of upper and lower level safety protection and dynamic management at the work site, eliminating safety hazards, and effectively shortening the construction cycle. It also solves the problems of installing and dismantling formwork on both sides of the expansion joint and the narrow working surface, which make it impossible to complete the construction using conventional construction methods.

[0005] To achieve the above objectives, this utility model provides a shear wall construction formwork structure, including a wall, an expansion joint, and a casting formwork, wherein the expansion joint is located between the left and right walls; a horizontal limiting device is provided between the wall and the casting formwork, and the limiting device is longitudinally arranged on the outer end face of the wall;

[0006] The casting template is vertically installed above the wall;

[0007] The casting template has multiple horizontal fixing holes in the longitudinal direction, and each fixing hole is provided with an installation pipe, which penetrates the casting template.

[0008] Each of the installation pipes is equipped with a matching fixing clamp, which penetrates the casting template.

[0009] Furthermore, the limiting device includes two U-shaped channel steels, with the openings of the two channel steels arranged opposite to each other;

[0010] A longitudinal limiting plate is fixedly provided on the upper end face of the channel steel, and the length of the limiting plate is the same as the length of the channel steel.

[0011] The inner end face of the channel steel is also provided with multiple mounting holes.

[0012] Furthermore, the casting template includes an outer wall template close to the expansion joint and an inner wall template away from the expansion joint. The outer wall template and the inner wall template are arranged parallel to each other, and the inner end face of the outer wall template is flush with the inner end face of the channel steel.

[0013] The outer end face of the exterior wall formwork is provided with multiple vertical back ribs at equal intervals, and the vertical back ribs are arranged along the length direction of the cast formwork.

[0014] Furthermore, the fixing holes are equidistantly provided on the outer wall formwork and the inner wall formwork;

[0015] The fixing holes are staggered with the vertical back ribs.

[0016] Furthermore, the fixing clamp includes a pull screw, the head end of which is fitted with an umbrella-shaped clip, and the tail end of which is fixedly fitted with a fixing nut;

[0017] The inner hole of the fixing nut is perpendicular to the direction of the pull screw.

[0018] The umbrella-shaped clip is threadedly connected to the pull screw.

[0019] The tail end of the fixing clamp passes through the fixing hole of the inner wall template and protrudes from the outer wall template.

[0020] Furthermore, a longitudinal fastening steel bar is fixedly provided at the tail end of the fixing clamp;

[0021] The fastening reinforcing bar passes sequentially from the front fixing nut through the rear fixing nut.

[0022] Furthermore, the installation pipe is made of PVC material and penetrates the casting template.

[0023] The advantages of this utility model are: This utility model provides a simple template processing system, which uses channel steel as the base support and special tie bolts and fixing clamps to reinforce the template. It enables simultaneous construction of the concrete shear walls on both sides of the expansion joint, ensuring the quality of the template support and the construction quality of the concrete shear wall at the expansion joint, and also meeting the design and use functions of the expansion joint.

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] Figure 2 This is a front view schematic diagram of this utility model.

[0027] Figure 3 This is an enlarged view of point A.

[0028] Figure 4 This is a schematic diagram of the limiting device structure.

[0029] Figure 5 This is a schematic diagram of the casting formwork structure.

[0030] Figure 6 This is a schematic diagram of the fixed clamp structure.

[0031] Explanation of reference numerals in the attached drawings: 1. Wall; 2. Expansion joint; 3. Casting formwork; 31. Exterior wall formwork; 32. Interior wall formwork; 33. Vertical back brace; 4. Limiting device; 41. Channel steel; 42. Limiting plate; 43. Mounting hole; 5. Fixing hole; 6. Mounting pipe; 7. Fixing clamp; 71. Tie rod; 72. Umbrella clip; 73. Fixing nut; 8. Fastening steel bar. Detailed Implementation

[0032] To further illustrate the technical means and effects of this utility model in achieving its intended purpose, the specific implementation methods, structural features and effects of this utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0034] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "aligned", "overlapping", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] Example 1

[0037] This embodiment provides, for example Figures 1-6 The shear wall construction formwork structure shown includes a wall 1, an expansion joint 2, and a casting formwork 3. The expansion joint 2 is located between the outer walls of the left and right walls 1. Horizontal limiting devices 4 are installed on the outer walls of the left and right walls 1. Specifically, the limiting devices 4 serve as limiting and fixing devices for installing the casting formwork 3 and are installed longitudinally on the wall 1.

[0038] The casting formwork 3, serving as the casting mold for the shear wall, is vertically installed above the limiting device 4 and the wall 1, and the installation direction of the casting formwork 3 is the same as that of the limiting device 4.

[0039] Compared to the heavy back ribs required by traditional molds, a new vertical back rib 33 is used to fix the casting template 3, and a special fixing clamp 7 is used to fasten the vertical back rib 33. Multiple horizontal fixing holes 5 are opened longitudinally on the casting template 3, and an installation tube 6 is fitted into each fixing hole 5. The installation tube 6 penetrates the casting template 3 to ensure that concrete does not fill into the fixing hole 5 when the shear wall is poured, thus affecting the later demolding and the installation of the fixing clamp 7. Each installation tube 6 is fitted with a matching fixing clamp 7, and the fixing clamp 7 is installed through the casting template 3, so that the fixing clamp 7 has sufficient stroke to fasten the casting template 3.

[0040] Furthermore, such as Figure 1 and Figure 2 As shown, the limiting device 4 includes two U-shaped channel steels 41 with their openings facing each other, that is, the channel steel 41 on the left wall 1 opens to the right and the channel steel 41 on the right wall 1 opens to the left. Both channel steels 41 are installed inside the expansion joint 2.

[0041] A longitudinal limiting plate 42 is welded to the upper end face of the channel steel 41. The limiting plate 42 is installed in the L-shaped groove formed by the limiting plate 42 and the channel steel 41 near the expansion joint 2 in the casting template 3. The limiting plate 42 serves as a limiting and positioning device for the casting template 3, and its length is the same as that of the channel steel 41, that is, the length is also the length of the casting template 3.

[0042] The inner end face of the channel steel 41 is also provided with multiple mounting holes 43, i.e. waist holes, for fastening the limiting device 4. The inner end face of the channel steel 41 is the end face where the channel steel 41 connects with the wall 1. During construction, since the channel steel 41 has no supporting structure underneath, it is necessary to insert screws into the mounting holes 43 to fix the channel steel 41.

[0043] Furthermore, such as Figure 1 and Figure 2As shown, the casting template 3 includes an outer wall template 31 near the expansion joint 2 and an inner wall template 32 away from the expansion joint 2. The outer wall template 31 and the inner wall template 32 are parallel to each other. Specifically, the outer wall template 31 is installed at the L-shaped groove formed between the limiting plate 42 and the inner end face of the channel steel 41, and the inner wall template 32 is installed on the upper end face of the wall 1. The inner end face of the outer wall template 31 and the outer end face of the inner wall template 32 are the pre-embedded steel reinforcement structure for the shear wall to be cast. Therefore, it is necessary to make the inner end face of the outer wall template 31 flush with the inner end face of the channel steel 41 to ensure the casting accuracy of the upper shear wall.

[0044] Multiple vertical back ribs 33 are equidistantly arranged on the outer end face of the exterior wall formwork 31. The vertical back ribs 33 are arranged along the length of the casting formwork 3. The vertical back ribs 33 are used to prevent the exterior wall formwork 31 from tilting. At the same time, composite plywood is used as the material for the exterior wall formwork 31 and the interior wall formwork 32. This ensures the strength of the casting formwork 3 itself while reducing the weight of the formwork itself. In addition, the material makes the formwork more workable, and drilling is simpler without damaging the structural performance of the formwork itself.

[0045] Furthermore, such as Figure 1 and Figure 5 As shown, the fixing holes 5 are equidistantly opened on the outer wall formwork 31 and the inner wall formwork 32 to ensure that each part of the casting formwork 3 is secured by the fixing clamp 7; at the same time, the fixing holes 5 and the vertical back rib 33 are staggered so that the fixing clamp 7 can extend out of the fixing holes 5, and then the fixing clamp 7 is used to further secure the casting formwork 3.

[0046] Furthermore, such as Figure 6 As shown, the fixing clamp 7 includes a pull screw 71, an umbrella-shaped clip 72 is sleeved on the head end of the pull screw 71, and a fixing nut 73 is welded to the tail end of the pull screw 71.

[0047] The umbrella-shaped clip 72 is threadedly connected to the tie rod 71. The umbrella-shaped clip 72 can rotate on the tie rod 71. By adjusting the stroke, the fastening steel bar 8 at the tail end of the tie rod 71 can be tightened.

[0048] The inner hole of the fixing nut 73 is perpendicular to the direction of the tie rod 71. The tail end of the fixing clamp 7 passes through the fixing hole 5 of the inner wall template 32 and exits from the outer wall template 31. The tie rod 71 is transverse and passes through the casting template 3. That is, the inner hole of the fixing nut 73 is always on the same plane as the casting template 3. When the tie rod 71 is rotated so that the inner hole of the fixing nut 73 is longitudinal, the fastening steel bar 8 can be inserted into it, and finally the inner wall template 32 and the outer wall template 31 are fastened and installed.

[0049] Furthermore, the tail end of the fixing clamp 7 is fixed with a longitudinal fastening steel bar 8. The fastening steel bar 8, together with the vertical back rib 33, improves the reliability of the casting template 3 and also applies an inward force to the outer wall template 31 to further prevent the outer wall template 31 from tilting or changing position and affecting the overall structure of the casting template 3.

[0050] The fastening steel bar 8 passes through the front fixing nut 73 and the rear fixing nut 73 in sequence. This method allows the fixing clamp 7 and the fastening steel bar 8 to play the role of the traditional heavy back rib through a simple structure, so that the pouring formwork 3 can be erected on both sides of the expansion joint 2 at the same time.

[0051] Furthermore, the installation pipe 6 is made of PVC material. Since the fixing clamp 7 needs to be removed from the pouring template 3 after the pouring is completed, the use of PVC pipe can ensure that the concrete can flow smoothly during the pouring process without affecting the strength of the final shear wall. It also facilitates the removal of the fixing clamp 7 after the concrete has solidified, as well as the installation and subsequent removal of the fixing clamp 7.

[0052] When in use: Since there is no supporting structure directly supporting the channel steel 41 in the limiting device 4, before pouring the lower layer of concrete, a tapered nut needs to be pre-embedded at the top of the outer wall formwork 31. The front of the nut is tightly attached to the outer wall formwork 31, and the back has a round steel anchor foot with a bend and a size of φ10. They are inserted into the concrete together. After the lower shear wall 1 is poured, the pre-embedded tapered nut can be screwed into a screw rod with a size of φ14 for fixing the limiting device 4.

[0053] First, the limiting device 4 needs to be installed. The limiting device 4 is installed longitudinally on the outer wall surface of the poured wall 1, and the upper end face of the channel steel 41 is flush with the upper end face of the poured wall 1. After the two channel steels 41 are placed, the screw is passed through the mounting hole 43 of the channel steel 41 and screwed into the pre-embedded conical nut, thus completing the installation of the limiting device 4.

[0054] Next, the outer wall template 31 of the casting template 3 is placed into the L-shaped groove formed by the limiting plate 42 and the inner end face of the channel steel 41. After ensuring that it is in place, the installation pipes 6 are inserted one by one into the fixing holes 5 with a size of φ50 that are opened at equal intervals on the casting template 3. The tail end of the customized fixing clamp 7 is inserted into the installation pipe 6 until it extends out and exceeds the vertical back rib 33 on the outer wall template 31. After the fixing nut 73 of the fixing clamp 7 is horizontally inserted into the fastening steel bar 8, the umbrella-shaped clip 72 on the inner side of the wall 1 is used to complete the overall structural fastening of the casting template 3.

[0055] After the inspection is completed, the concrete can be poured. Once the concrete has set, the inserted fixing clamps 7 and installation pipes 6 need to be removed. Then, the holes in the shear wall can be filled.

[0056] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A shear wall construction formwork structure, comprising a wall (1), an expansion joint (2), and a casting formwork (3), characterized in that: The expansion joint (2) is located between the left and right walls (1); A horizontal limiting device (4) is fixedly installed on the outer end face of both the left and right walls (1), and the limiting device (4) is closely attached to the outer end face of the wall (1); The casting template (3) is vertically positioned above the wall (1); The casting template (3) has multiple horizontal fixing holes (5) longitudinally provided, and each fixing hole (5) is provided with an installation pipe (6), which penetrates the casting template (3). Each of the installation pipes (6) is equipped with a matching fixing clamp (7), which penetrates the casting template (3).

2. The shear wall construction formwork structure as described in claim 1, characterized in that: The limiting device (4) includes two U-shaped channel steels (41), with the openings of the two channel steels (41) arranged opposite to each other; A longitudinal limiting plate (42) is fixedly provided on the upper end face of the channel steel (41), and the length of the limiting plate (42) is the same as the length of the channel steel (41). The inner end face of the channel steel (41) is also provided with multiple mounting holes (43).

3. The shear wall construction formwork structure as described in claim 2, characterized in that: The casting template (3) includes an outer wall template (31) close to the expansion joint (2) and an inner wall template (32) away from the expansion joint (2). The outer wall template (31) and the inner wall template (32) are arranged in parallel, and the inner end face of the outer wall template (31) is flush with the inner end face of the channel steel (41). The outer end face of the external wall template (31) is provided with multiple vertical back ribs (33) at equal intervals, and the vertical back ribs (33) are arranged along the length direction of the casting template (3).

4. A shear wall construction formwork structure as described in claim 3, characterized in that: The fixing holes (5) are equally spaced on the outer wall template (31) and the inner wall template (32); The fixing hole (5) is misaligned with the vertical back rib (33).

5. A shear wall construction formwork structure as described in claim 4, characterized in that: The fixing clamp (7) includes a pull screw (71), the first end of the pull screw (71) is fitted with an umbrella-shaped clip (72), and the tail end of the pull screw (71) is fixedly provided with a fixing nut (73); The inner hole of the fixing nut (73) is perpendicular to the direction of the pull screw (71); The umbrella-shaped clip (72) is threadedly connected to the pull screw (71); The tail end of the fixing clamp (7) passes through the fixing hole (5) of the inner wall template (32) and protrudes from the outer wall template (31).

6. A shear wall construction formwork structure as described in claim 5, characterized in that: The tail end of the fixing clamp (7) is fixedly provided with a longitudinal fastening steel bar (8); The fastening steel bar (8) passes through the fixing nut (73) at the front end and then through the fixing nut (73) at the rear end.

7. A shear wall construction formwork structure as described in claim 1, characterized in that: The mounting tube (6) is made of PVC material.

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