A prefabricated formwork structure for a building engineering wall

Abstract

The utility model discloses a kind of construction engineering wall prefabricated form structures, including prefabricated form structure, prefabricated form structure includes a pair of interval length formwork and a pair of interval width formwork, further include first tensioning structure for length formwork pair tensioning, second tensioning structure for width formwork pair tensioning;The outside of width formwork, length formwork is respectively touched pressure by several compression die mechanism;The compression die mechanism includes base, the inside of base is hingedly installed with pressure support, the outside of base is respectively hingedly with several extrusion pressure support arm, pressure arm is tensioned by tensioning structure.Tensioning structure is tensioned by the compression die mechanism of the above structure, and the technical defect of expansion mould is solved essentially by the compression die mechanism design, and lightweight, energy-saving prefabricated formwork can be applied to a large amount of concrete pouring construction.

Description

Technical Field

[0001] This utility model belongs to the field of wall casting formwork technology, specifically relating to a prefabricated template structure for building walls. Background Technology

[0002] In building construction, formwork-supported concrete pouring is very common. For example, wall structures, including shear walls and auxiliary walls, are constructed using this method. Specifically, after the reinforcing cage of the wall is tied, workers erect wooden formwork on the outside of the cage on-site, and then use tie rods to prevent bulging during concrete pouring.

[0003] Most publicly available formwork methods involve on-site formwork, while building walls are often of standardized dimensions, requiring formwork of uniform size. Therefore, to improve construction efficiency, precast formwork is increasingly being used. Unlike on-site formwork, precast formwork is a prefabricated structure directly supported on-site against the outside of the reinforcing cage. This method increases construction efficiency.

[0004] However, in actual engineering construction, although prefabricated formwork can improve efficiency, for wall construction with high structural strength requirements, such as shear walls of high-rise buildings, manual on-site formwork is still used. Specifically, manual formwork can be reinforced with tie rods, support rods, and other strengthening structures as needed during construction to ensure that the formwork does not bulge during pouring.

[0005] Most precast formwork is a standard structure and can be used for most structural walls. However, for special requirements such as thicker or wider (longer) walls, the amount of concrete poured is large. In addition, the formwork is mostly made of lightweight and energy-saving materials. Due to the large amount of concrete poured, the formwork often cannot withstand the expansion and pressure of the concrete, causing it to swell and break open.

[0006] In actual work, concrete expansion formwork often expands from any end of the formwork. However, the tie rods, support rods and other structures on traditional precast formwork are difficult to fully and seamlessly support the entire formwork along its height. Utility Model Content

[0007] Based on the above background, the purpose of this utility model is to provide a prefabricated template structure for building walls.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A precast template structure for building wall construction includes a precast template structure, which includes a pair of spaced-apart length templates and a pair of spaced-apart width templates, and further includes a first tie structure for pulling the length templates together and a second tie structure for pulling the width templates together. The outer sides of the width template and the length template are pressed by several pressing mechanisms. The molding mechanism includes a base, with a pressing bracket hinged to the inner side of the base, and several pressing arms that compress the pressing bracket are hinged to the outer side of the base. The pressing arms are tensioned by a tensioning structure.

[0009] Preferably, the first tie structure includes a plurality of first tie plates arranged at vertical intervals; Several tie rods are installed between the first tie plates, and tension nuts are threaded to both ends of each tie rod.

[0010] Preferably, the outer side wall of the length template is integrally formed with a plurality of reinforcing ribs distributed along the length direction; The first pair of tie plates is fixedly installed on the reinforcing rib by a number of screws.

[0011] Preferably, the outer wall of the width template is integrally formed with a plurality of reinforcing ribs distributed along the length direction; The second tie structure includes a plurality of second tie plates respectively installed at the end positions of the first tie plate; The second pull plate abuts against the reinforcing rib; The second pull plate is tightened to the first pair of pull plates by a tensioning structure.

[0012] Preferably, the tensioning structure includes a sliding opening at the end of the first pair of pull plates, and the two ends of the second pull plate are slidably connected within the sliding opening; A tensioning screw is fixedly connected inside the sliding port. An adjustment sliding port is provided on the second pull plate. The tensioning screw passes through the adjustment sliding port and a locking nut is threaded onto the tensioning screw.

[0013] Preferably, the pressure-bearing bracket presses against the outer side of the second pull plate and the first pull plate.

[0014] Preferably, the outer side of the base is hinged with an outer pressure arm that presses against the upper end of the pressure support, and the base also includes an inner pressure arm hinged to the inner side of the outer pressure arm; The inner pressure arm presses against the lower end of the pressure support.

[0015] Preferably, the tensioning structure includes long adjustment ports respectively opened on the inner pressure arm and the outer pressure arm; It also includes a slanted fixing screw that runs through the long adjustment port; The top of the base is fixedly connected to a screw bracket for fixing and mounting inclined screws; The inclined fixing screw is threaded with pressing nuts that press down the inner pressing arm and the outer pressing arm respectively.

[0016] Preferably, the base is anchored to the ground.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the technical defect that after the precast formwork of lightweight and energy-saving materials is erected, the expansion force of the concrete is large when a large amount of concrete is poured, and the formwork is prone to bulging.

[0018] 2. The molding mechanism includes a base, with a pressing bracket hinged to the inner side of the base. Several pressing arms for compressing the pressing bracket are hinged to the outer side of the base, and these arms are tensioned by a tensioning structure. The pressing bracket presses against the outer sides of the second tie plate and the first tie plate. This ensures that after the mold is erected, the pressing bracket provides comprehensive support along the height direction of the width and length of the template. In contrast, traditional methods using temporarily installed diagonal support rods are cumbersome to install due to limited support points, and the support effect cannot be guaranteed.

[0019] 3. The outer and inner pressure arms press down along the upper and lower ends of the support bracket to tension it. The greater the downward tension force exerted by the outer and inner pressure arms on the support bracket, the greater the pressure on the second tie plate and the first pair of tie plates, and the higher the stability of the second tie plate and the first pair of tie plates supporting the formwork. This structural method cleverly solves the problem of high risk of formwork bulging caused by large concrete pouring during precast formwork erection.

[0020] 4. The formwork is fully tightened by the first and second tie structures, which further increases the stability of the formwork structure and prevents the technical defects of formwork bulging. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the molding mechanism in an embodiment of the present invention; Figure 3 This is a schematic diagram of the first and second tie structures in the embodiments of this utility model; Figure 4 This is a schematic diagram of the tensioning structure in an embodiment of the present invention; Figure 5 This is an embodiment of the present utility model. Figure 1The right view in the middle; Figure 6 This is an embodiment of the present utility model. Figure 1 Top view in the middle; Figure 7 This is a schematic diagram of the structure of the second pull plate in an embodiment of this utility model.

[0023] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] 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 protection scope of the present utility model.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0027] Example 1: like Figure 1-6 As shown, a precast formwork structure for building walls includes a precast formwork structure, which is the same as existing precast formwork structures. The precast formwork structure includes a pair of spaced-apart length formworks 11 and a pair of spaced-apart width formworks 12. Similar to existing formwork support methods, the length formworks 11 support the left and right sides of the wall reinforcement cage, and the width formworks 12 support the front and rear sides (the pair of length formworks 11 and the pair of width formworks 12 form a sealed formwork structure).

[0028] To ensure proper formwork tension during concrete pouring, especially for walls with large dimensions (such as load-bearing walls, shear walls, extended or widened walls), and given the large volume of concrete being poured, and the precast formwork being made of lightweight, energy-efficient materials, the risk of formwork bulging is very high. Therefore, this invention offers the following improvements: It also includes a first tie structure 3 for pulling the length template 11 together, and a second tie structure for pulling the width template 12 together. Specifically, the first tie structure 3 includes a plurality of first tie plates 31 arranged vertically at intervals.

[0029] Several tie rods 32 are installed between the first tie plates 31, and tension nuts are threaded to both ends of each tie rod 32.

[0030] Specifically, the outer wall of the length template 11 is integrally formed with several reinforcing ribs distributed along its length (to increase the structural strength of the template). Through holes for mates with the tie rods 32 are made on the reinforcing ribs and the template. After the length template 11 is initially erected, the tie rods 32 are inserted through the through holes (similarly, through holes are made on the first tie plate 31), and tensioned using tension nuts. In actual construction, a plastic tube is fitted onto the tie rods 32. The plastic tube is subsequently poured directly into the concrete. The tie rods 32 can be directly pulled out from the plastic tube for recycling after demolding.

[0031] This method avoids the drawback of having to cut off the protruding parts of the screws on the wall later.

[0032] Meanwhile, the first pair of pull plates 31 are fixedly mounted on the reinforcing ribs by several screws. Specifically, threaded grooves are opened on the reinforcing ribs, and screws are pre-installed in the threaded grooves. When the first pair of pull plates 31 are installed, the through holes on the first pair of pull plates 31 corresponding to the screws are aligned with the screws to achieve the length template 11 on the first pair of pull plates 31. Then, the pull screws 32 are tightened in the above manner.

[0033] After the tie rod 32 is pulled in, the nut on the rod is screwed on and pressed against the side wall of the first tie plate 31.

[0034] Through the aforementioned structure, the first tie plate 31 is installed at fixed points on the length template 11. Double reinforcement, including tensioning with tie rods 32 and locking with bolts, increases the resistance and support of the first tie plate 31 to the template. This is because the length template 11 experiences the greatest expansion force from the concrete during pouring (as it supports the main surface of the wall's reinforcing cage). Therefore, the multi-point, double-locking method significantly increases the stability of the first tie plate 31's support for the length template 11.

[0035] Example 2: like Figure 1-7As shown, in this embodiment, based on the structure of embodiment 1, similarly, the outer wall of the width template 12 is integrally formed with several reinforcing ribs distributed along the length direction (which similarly serve to increase the strength of the template structure).

[0036] Unlike the length template 11, the width template 12 is supported on the narrow side (width side) of the wall. Therefore, during the pouring process, the area of ​​the width template 12 is small, and it is not easy to expand after being subjected to the expansion force of concrete.

[0037] Specifically, the aforementioned second tie structure includes several second tie plates 33 respectively installed at the end positions of the first tie plate 31; similarly, the second tie plates 33 abut against the reinforcing ribs.

[0038] At the same time, the second pull plate 33 and the first pair of pull plates 31 are tightened together by a tensioning structure.

[0039] Specifically, the tensioning structure includes a sliding opening 311 at the end of the first pair of tension plates 31, and the two ends of the second tension plate 33 are slidably connected within the sliding opening 311. When the first tension plate is tensioned, the two ends of the second tension plate 33 are guided along the sliding openings 311 of the first pair of tension plates 31 on both sides.

[0040] Meanwhile, a tensioning screw 3111 is fixedly connected inside the sliding port 311. Correspondingly, an adjustment sliding port A is opened on the second pull plate 33. The tensioning screw passes through the adjustment sliding port A, and a locking nut is threaded onto the tensioning screw 3111.

[0041] Specifically, when the second pull plate 33 is introduced along the slide 311, the tensioning screw passes through the adjustment slide A of a certain length (the adjustment slide A has a certain length, so if the length templates 11 need to be adjusted and tightened again later, the length template 11 - the first pair of pull plates 31 - the tensioning screw can be finely adjusted and slid relative to the adjustment slide A).

[0042] As the locking nut is continuously tightened inward, it continuously pushes the second pull plate 33 to press against the width template 12.

[0043] In actual work, in order to facilitate the tightening of the locking nut, a wing nut can be used. During the operation, the operator can use a tool to pry the wing of the wing nut.

[0044] The above structure achieves mutual locking between the second tie plate 33 and the first tie plate. Since the first tie plate supports the length template 11 and the second tie plate 33 supports the width template 12, the entire formwork structure, including the width and length templates 11, forms an integrated reinforced formwork structure under the mutual locking of the second tie plate 33 and the first tie plate. This structural method has higher stability, and during the subsequent concrete pouring process, the integrated structure of the formwork forms a more stable structure resistant to the expansion force of concrete.

[0045] Example 3: like Figure 1-6 As shown, this embodiment, based on the structure of embodiment 2, often uses lightweight and energy-saving materials for prefabricated formwork, considering its cost, transportation cost, and installation efficiency. However, once the amount of concrete poured is large, the drawbacks of lightweight and energy-saving materials gradually become apparent. The main issue is that with a large amount of concrete, the expansion force of the concrete is greater, making the formwork prone to bulging.

[0046] Therefore, in order to further increase the stability of the formwork, while avoiding the use of heavy materials such as steel plates for formwork, and thus retaining the advantages of using lightweight and energy-saving prefabricated formwork while addressing its shortcomings, this utility model is improved as follows: The outer sides of the width template 12 and the length template 11 are pressed by several pressing mechanisms 2.

[0047] Specifically, the molding mechanism 2 includes a base 21, with a pressing bracket 22 hinged to the inner side of the base 21, and a plurality of pressing arms that press against the pressing bracket 22 are hinged to the outer side of the base 21, and the pressing arms are tensioned by a tensioning structure.

[0048] Specifically, the pressure-resistant bracket 22 presses against the outer side of the second tie plate 33 and the first tie plate 31. That is, after the formwork is erected, the pressure-resistant bracket 22 provides comprehensive support along the height direction of the width template 12 and the length template 11 without any blind spots. In contrast, the traditional method of using temporarily installed diagonal support rods is not only cumbersome to install due to the limited number of support points, but also cannot guarantee the support effect.

[0049] During the operation of the hinged mounting support 22, the pressing mechanism 2 is placed and brought close to the template. Then the support 22 is flipped to a vertical position and pushed further inward to press against the corresponding second pull plate 33 and first pair of pull plates 31 (all the second pull plates 33 and first pair of pull plates 31 from top to bottom can be pressed against).

[0050] Subsequently, the outer and inner pressure arms are used to press down and tension the pressure support 22 along the upper and lower ends of the pressure support 22. The greater the downward tensioning force of the outer and inner pressure arms on the pressure support 22, the greater the pressure on the second pull plate 33 and the first pair of pull plates 31, and the higher the stability of the second pull plate 33 and the first pair of pull plates 31 supporting the template.

[0051] The above structural method cleverly solves the problem of high risk of formwork bulging caused by large concrete pouring volume during the precast formwork support process.

[0052] Specifically, the outer side of the base 21 is hinged with an outer pressure arm 23 that presses against the upper end of the pressure support 22, and also includes an inner pressure arm 24 that is hinged to the inner side of the outer pressure arm 23; the inner pressure arm 24 presses against the lower end of the pressure support 22.

[0053] The inner and outer pressure arms 23 are used to tension both ends of the pressure support 22 to increase the tensioning effect.

[0054] Meanwhile, the tensioning structure includes long adjustment ports A respectively opened on the inner pressure arm 24 and the outer pressure arm 23; it also includes a slanted fixing screw 26 passing through the long adjustment ports A; correspondingly, the top of the base 21 is fixedly connected to a screw bracket 25 for fixing the slanted fixing screw 26; the slanted fixing screw 26 is threaded with a pressing nut that presses down the inner pressure arm 24 and the outer pressure arm 23 respectively.

[0055] During operation, the outer pressure arm 23 is first flipped down so that it presses against the upper end of the pressure bracket 22. Then, the nut at the upper end of the inclined fixing screw 26 is turned downwards until it presses against the outer pressure arm 23 (just enough to keep it from loosening). With the upper nut blocking the movement, the outer pressure arm 23 is firmly pressed against the upper end of the pressure bracket 22.

[0056] Then, the inner pressure arm 24 is flipped over to further lock the lower end of the pressure bracket 22 in the same manner.

[0057] The upper and lower ends of the pressure support 22 are subjected to the compressive force of the outer and inner pressure arms 24. Therefore, the hinged pressure support 22 (made of thickened steel plate) is firmly pressed against the second tie plate 33 and the first tie plate 31. During the concrete pouring process in this way, there will be no bulging of the formwork, because bulging of the formwork must overcome the compressive force of the pressure support 22.

[0058] Similar to existing methods, the base 21 is anchored to the ground. Specifically, in actual operation, mounting holes can be made on the base 21 as in existing methods. After adjusting the position of the molding mechanism 2, an expansion bolt can be directly inserted through the mounting hole and screwed into the ground. Alternatively, a chisel can be used for anchoring.

[0059] The aforementioned pressure support 22 and the outer and inner pressure arms are hinged to the base as follows: three hinge seats are welded on the base, and the lower ends of the pressure support 22 and the outer and inner pressure arms are hinged to the hinge seats by pins.

[0060] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A precast formwork structure for building walls, comprising a precast formwork structure, the precast formwork structure including a pair of spaced-apart length formworks and a pair of spaced-apart width formworks, characterized in that... ； It also includes a first tie structure for pulling the length template together, and a second tie structure for pulling the width template together; The outer sides of the width template and the length template are pressed by several pressing mechanisms. The molding mechanism includes a base, with a pressing bracket hinged to the inner side of the base, and several pressing arms that compress the pressing bracket are hinged to the outer side of the base. The pressing arms are tensioned by a tensioning structure.

2. The prefabricated formwork structure for building walls according to claim 1, characterized in that, The first tie structure includes a plurality of first tie plates arranged at vertical intervals; Several tie rods are installed between the first tie plates, and tension nuts are threaded to both ends of each tie rod.

3. The precast formwork structure for building walls according to claim 2, characterized in that, The outer wall of the length template is integrally formed with several reinforcing ribs distributed along the length direction; The first pair of tie plates is fixedly installed on the reinforcing rib by a number of screws.

4. The precast formwork structure for building walls according to claim 3, characterized in that, The outer wall of the width template is integrally formed with several reinforcing ribs distributed along the length direction; The second tie structure includes a plurality of second tie plates respectively installed at the end positions of the first tie plate; The second pull plate abuts against the reinforcing rib; The second pull plate is tightened to the first pair of pull plates by a tensioning structure.

5. The precast formwork structure for building walls according to claim 4, characterized in that, The tensioning structure includes a sliding opening at the end of the first pair of pull plates, and the two ends of the second pull plate are slidably connected in the sliding opening; A tensioning screw is fixedly connected inside the sliding port. An adjustment sliding port is provided on the second pull plate. The tensioning screw passes through the adjustment sliding port and a locking nut is threaded onto the tensioning screw.

6. The precast formwork structure for building walls according to claim 5, characterized in that, The pressure-resistant bracket presses against the outer side of the second pull plate and the first pair of pull plates.

7. The precast formwork structure for building walls according to claim 6, characterized in that, The base is hinged to the outer side of an external pressure arm that presses against the upper end of the pressure support, and also includes an inner pressure arm hinged to the inner side of the external pressure arm. The inner pressure arm presses against the lower end of the pressure support.

8. The precast formwork structure for building walls according to claim 7, characterized in that, The tensioning structure includes long adjustment ports respectively opened on the inner pressure arm and the outer pressure arm; It also includes a slanted fixing screw that runs through the long adjustment port; The top of the base is fixedly connected to a screw bracket for fixing and mounting inclined screws; The inclined fixing screw is threaded with pressing nuts that press down the inner pressing arm and the outer pressing arm respectively.

9. The precast formwork structure for building walls according to claim 1, characterized in that, The base is anchored to the ground.

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