Foldable shear wall formwork for narrow spaces

Abstract

This utility model relates to a foldable shear wall formwork for narrow spaces, comprising a middle formwork, side formwork, a reinforcing space frame, back rib brackets, and back ribs. The outer end faces of both the middle and side formworks are fixedly connected to the reinforcing space frame. The left and right sides of the middle formwork are hinged to the side formwork via hinged hinges, allowing the side formworks to fold outwards onto the outer end face of the middle formwork. The outer end faces of the reinforcing space frame on both the middle and side formworks are fixedly connected to the back rib brackets, each with a groove. The back ribs are horizontally mounted on multiple back rib brackets on the same horizontal line, thus confining the middle and side formworks to the same vertical plane. This utility model, by hingedly connecting the side formworks to the left and right sides of the middle formwork, allows the side formworks to fold outwards onto the outer end face of the middle formwork. In the folded state, the overall width is reduced, enabling the middle and side formworks to be folded and transported within narrow spaces.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a foldable shear wall formwork for use in narrow spaces. Background Technology

[0002] In sewage treatment plant pools, pipe corridors and other projects, double shear wall structures are commonly used, which often results in the construction passage clearance of the shear wall being 800 mm or less, forming a narrow space and making the working environment very cramped.

[0003] Due to limited clearance in passageways, conventional large-slab formwork is often difficult to implement. During the laying or adjustment of the formwork, the edges and corners are prone to rubbing against the wall or reinforcing bars, which not only affects the efficiency of formwork support but also causes damage to the formwork and reduces its turnover rate.

[0004] Especially in pool and pipe gallery structures, the passages often have L-shaped corners, which limit the length of the formwork and make it difficult for conventional formwork to pass through the corners during transportation, thus preventing it from entering the intended construction position.

[0005] Therefore, it is necessary to study a foldable shear wall formwork for narrow spaces. Utility Model Content

[0006] Therefore, the purpose of this utility model is to provide a foldable shear wall formwork for narrow spaces, which can effectively solve the problems of existing formwork being prone to bumps and collisions in narrow spaces and having difficulty passing through corners.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A foldable shear wall formwork for narrow spaces includes a middle formwork, side formwork, reinforcing space frame, back rib bracket, and back rib. The outer end faces of the middle template and side templates are all fixedly connected to reinforcing mesh frames. The left and right sides of the central template are hinged to the side templates via hinged hinges. The two wings of the hinge are respectively fixed to the outer end faces of the corresponding two reinforcing grid frames, so that the two side templates can be folded outwards to the outer end face of the middle template. The outer end faces of the reinforcing space frame located on the middle and side formwork are all fixedly connected with back rib brackets. At least one set of back rib brackets is set on the middle and side formwork on the same horizontal line. Each back rib bracket is provided with a U-shaped groove with an upper opening. The back bracing is horizontally erected on multiple back bracing brackets located on the same horizontal line to limit the middle template and side template to the same vertical plane.

[0008] Furthermore, the reinforcing grid includes several vertically intersecting longitudinal and transverse bars, with rectangular cavities formed between the longitudinal and transverse bars.

[0009] Furthermore, a longitudinal web rod is fixedly connected in a rectangular cavity located on the same straight line, and the back brace bracket is fixed to the outer end face of the longitudinal web rod; The back brace extends outward into a rectangular cavity, and the U-shaped slot is formed in the area where the back brace extends into the rectangular cavity.

[0010] Furthermore, the back rib brackets located on the side template and the corresponding back rib brackets located on the middle template are staggered left and right, so that after the side template is folded to the outer end face of the middle template, the back rib brackets are staggered in the rectangular cavity.

[0011] Furthermore, water-stop grooves are provided at both ends of the inner end face of the middle template, and an installation groove is provided on the side of the inner end face of the side template facing the middle template. The installation groove is connected to the water-stop groove, and a water-stop shoulder plate is fixedly connected in the installation groove. The water-stop shoulder plate extends out of the installation groove towards the middle template and fits against the bottom of the water-stop groove to cover the splice between the side template and the middle template.

[0012] Furthermore, a flexible sealing gasket is fixed to the bottom of the water-stop groove.

[0013] Furthermore, it also includes a snap-fit ​​structure, which includes a snap head and a snap groove. The snap groove is fixed on the outer end face of the reinforcing space frame located in the middle template, and the snap head is fixed on the outer end face of the reinforcing space frame located in the side template. When the side template is folded outward to the outer end face of the middle template, the snap head is inserted into the snap groove.

[0014] The beneficial effects of the above technical solution are: This invention connects the side formwork to the left and right sides of the central formwork via hinges, allowing the side formwork to fold outwards to the outer end face of the central formwork. The overall width is reduced in the folded state, enabling the central and side formwork to be folded and transported in narrow spaces. This allows for smooth passage through shear wall construction spaces with small clearances, avoiding the collisions with walls or reinforcing bars that can occur with conventional formwork during transport due to its excessive length. It also allows for smooth passage through corners, ensuring the formwork can be used in confined environments. The reinforcing grid, fixedly connected to the outer end faces of the central and side formwork, improves the formwork's resistance to deformation. Back rib brackets are fixedly connected to the outer surface of the reinforcing grid; multiple back rib brackets form a U-shaped support groove to support the back ribs. In the unfolded state, the back ribs are horizontally placed on the back rib brackets, limiting the positioning of the central and side formwork and keeping the formwork flat in the vertical plane. This enhances the support strength and ensures the stability and flatness of the formwork during concrete pouring, thus achieving both convenient transportation and installation, and reliable support for forming in confined spaces. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 for Figure 1 The front view; Figure 3 for Figure 2 Top view; Figure 4 This is a top sectional view of one side of the template after it has been folded up. Figure 5 This is a schematic diagram of the snap-fit ​​structure.

[0016] Reference numerals: 1. Middle template; 2. Side template; 3. Reinforcing space frame; 4. Back rib bracket; 5. Back rib; 6. Hinged joint; 7. Clip head; 8. Clip groove; 101. Water-stop groove; 102. Sealing gasket; 201. Mounting groove; 202. Water-stop shoulder plate; 301. Longitudinal bar; 302. Horizontal bar; 303. Longitudinal web bar; 304. Rectangular cavity. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: This embodiment aims to provide a foldable shear wall formwork for narrow spaces. It is mainly suitable for the construction of double shear wall structures with a spacing of 800mm or less, such as sewage treatment plant pools and pipe corridors. It addresses the problem that existing formwork is prone to bumping and collisions in narrow spaces and has difficulty passing through corners.

[0018] A foldable shear wall formwork for use in confined spaces, such as Figure 1 and Figure 2 The system includes a central template 1, side templates 2, a reinforcing space frame 3, a back rib bracket 4, and a back rib 5. The left and right sides of the central template 1 are hinged to the side templates 2 via hinged hinges 6. The central template 1 is made of steel plate with a cross-sectional dimension of 600mm × 1830mm × 3mm, and the side templates 2 are made of steel plate with a cross-sectional dimension of 300mm × 1830mm × 3mm. The central template 1 and side templates 2 in the attached diagram do not have tie rod holes for tie bolts. This is mainly because conventional tie bolts are difficult to install in narrow spaces. Therefore, temporary supports are usually installed on the outside of the template to support and limit its movement. In other embodiments, tie rod holes can also be provided on the template to accommodate tie rods or tie structures that can overcome the challenges of narrow spaces. This embodiment mainly focuses on the template structure; the support and fixing methods for the template all adopt existing technologies and will not be elaborated here.

[0019] The outer ends of both the middle formwork 1 and the side formwork 2 are fixedly connected to a reinforcing space frame 3, with the outer end face being the side away from the shear wall being poured. The reinforcing space frame 3 includes several vertically staggered welded longitudinal bars 301 and transverse bars 302, both of which are square tube structures, forming a rectangular cavity 304 between them.

[0020] Hinged hinge 6 uses a 180° folding hinge, such as Figure 3 and Figure 4 The two wings of the hinge 6 are fixed to the outer end faces of the corresponding two reinforcing mesh frames 3, so that the two side templates 2 can be folded outward to the outer end face of the middle template 1 for folding and storage.

[0021] The outer end faces of the reinforcing space frame 3 located on the middle formwork 1 and the side formwork 2 are fixedly connected with back rib brackets 4. Specifically, longitudinal web members 303 are fixedly connected in the rectangular cavity 304 located on the same straight line, and the back rib brackets 4 are welded and fixed to the outer end faces of the longitudinal web members 303. The back rib brackets 4 are provided with U-shaped slots with upper openings. Three sets of back rib brackets 4 are arranged at intervals along the vertical direction. At least one set of back rib brackets 4 is set on the middle formwork 1 and the side formwork 2 on the same horizontal line so that the back ribs 5 can be horizontally erected on multiple back rib brackets 4 located on the same horizontal line, so as to limit the middle formwork 1 and the side formwork 2 to the same vertical plane.

[0022] like Figure 3 The back brace bracket 4 extends outward into a rectangular cavity 304, and a U-shaped bracket is opened in the area where the back brace bracket 4 extends into the rectangular cavity 304, so as to facilitate the erection of the back brace 5.

[0023] However, the length of the rectangular cavity 304 extended by the back brace bracket 4 is less than or equal to the depth of a rectangular cavity 304, so that after the side template 2 is folded, the back brace bracket 4 can be located in another rectangular cavity 304 directly opposite, so that the side template 2 can be folded flat and flipped onto the outer end face of the middle template 1 after folding 180°.

[0024] like Figure 2 The longitudinal web members 303 and back rib brackets 4 located on the side template 2 are staggered from the corresponding longitudinal web members 303 and back rib brackets 4 located on the middle template 1. This results in the back rib brackets 4 being staggered in the rectangular cavity 304 after the side template 2 is folded to the outer end face of the middle template 1. This avoids the two sets of back rib brackets 4 being symmetrical about a hinged joint 6, which would cause the two back rib brackets 4 to interfere with each other after the side template 2 is folded, and thus prevent it from being folded to a flat state.

[0025] like Figure 4 The outer end faces of the middle template 1 and the side template 2 are provided with a snap-fit ​​structure at the relative positions after folding. The snap-fit ​​structure includes a snap head 7 and a snap groove 8. The snap groove 8 is fixed on the outer end face of the reinforcing grid 3 located on the middle template 1, and the snap head 7 is fixed on the outer end face of the reinforcing grid 3 located on the side template 2. When the side template 2 is folded outward to the outer end face of the middle template 1, the snap head 7 is inserted into the snap groove 8.

[0026] like Figure 3 and Figure 4The inner end face of the middle template 1 has L-shaped water-stop grooves 101 at both ends. The inner end face faces the shear wall to be poured. The inner end face of the side template 2 has an L-shaped installation groove 201 on the side facing the middle template 1. The installation groove 201 abuts against and communicates with the water-stop groove 101. A water-stop shoulder plate 202 is fixedly connected in the installation groove 201. The water-stop shoulder plate 202 extends out of the installation groove 201 towards the middle template 1 and fits against the bottom of the water-stop groove 101. The bottom of the water-stop groove 101 is the side away from the shear wall. The water-stop shoulder plate 202 is set in the vertical direction to cover the splice between the side template 2 and the middle template 1.

[0027] Furthermore, a flexible sealing gasket 102 is fixed to the bottom of the water-stop groove 101, so that when the side template 2 is flipped to be on the same vertical plane as the middle template 1, the water-stop shoulder plate 202 presses the sealing gasket 102 to seal the joint and improve the water-stopping effect.

Claims

1. A foldable shear wall form for use in tight spaces, characterized by: Includes middle formwork, side formwork, reinforced space frame, back rib brackets, and back ribs; The outer end faces of the middle template and side templates are all fixedly connected to reinforcing mesh frames. The left and right sides of the central template are hinged to the side templates via hinged hinges. The two wings of the hinge are respectively fixed to the outer end faces of the corresponding two reinforcing grid frames, so that the two side templates can be folded outwards to the outer end face of the middle template. The outer end faces of the reinforcing space frame located on the middle template and side template are all fixedly connected with back rib brackets. At least one set of back rib brackets is set on the middle template and side template on the same horizontal line. Each back rib bracket is provided with a U-shaped groove with an upper opening. The back bracing is horizontally erected on multiple back bracing brackets located on the same horizontal line to limit the middle template and side template to the same vertical plane.

2. The foldable shear wall formwork for narrow space according to claim 1, wherein: The reinforced space frame includes several vertically intersecting longitudinal and transverse bars, forming a rectangular cavity between the longitudinal and transverse bars.

3. The foldable shear wall formwork for narrow spaces according to claim 2, wherein: A longitudinal web rod is fixedly connected in a rectangular cavity located on the same straight line, and the back rib bracket is fixed to the outer end face of the longitudinal web rod; The back brace extends outward into a rectangular cavity, and the U-shaped slot is formed in the area where the back brace extends into the rectangular cavity.

4. A foldable shear wall formwork for narrow spaces according to claim 3, characterized in that: The back rib brackets located on the side template and the corresponding back rib brackets located on the middle template are staggered left and right, so that after the side template is folded to the outer end face of the middle template, the back rib brackets are staggered in the rectangular cavity.

5. The foldable shear wall formwork for narrow spaces according to any one of claims 1-4, characterized in that: Water-stop grooves are provided at both ends of the inner end face of the middle template, and an installation groove is provided on the side of the inner end face of the side template facing the middle template. The installation groove is connected to the water-stop groove, and a water-stop shoulder plate is fixedly connected in the installation groove. The water-stop shoulder plate extends out of the installation groove towards the middle template and fits against the bottom of the water-stop groove.

6. The foldable shear wall formwork for narrow spaces according to claim 5, wherein: The bottom of the water-stop groove is fixed with a flexible sealing gasket.

7. The foldable shear wall formwork for narrow spaces according to any one of claims 1-4, characterized in that: It also includes a snap-fit ​​structure, which includes a snap head and a snap groove. The snap groove is fixed on the outer end face of the reinforcing space frame located in the middle template, and the snap head is fixed on the outer end face of the reinforcing space frame located in the side template. When the side template is folded outward to the outer end face of the middle template, the snap head is inserted into the snap groove.

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