Assembly type integral hoisting multi-hole box culvert foundation template

Abstract

The utility model discloses an assembly type integral hoisting multi -hole box culvert foundation template, including outer wall template, axillary template, outer mould vertical frame, upper truss. Single fastener is welded on the axillary template and outer wall template, and the outer mould vertical frame is connected with the upper truss through single fastener and rotary fastener respectively, and the upper truss is connected through bolt and steel pipe scissors support between, forms integral support system. The template can be preassembled outside the working face, and after the reinforcement binding is completed, the whole is hoisted to the working face, and when the concrete strength satisfies the requirement of form removal, the whole is hoisted to remove the form, for the box culvert foundation of two holes and above, can realize the quick extension through the additional axillary template and upper truss. The structure is convenient to install and detach, and the construction efficiency is high, can effectively guarantee the concrete forming quality, reduces the labor intensity and safety risk, has stronger practicality and popularization value.

Description

Technical Field

[0001] This utility model relates to the field of municipal and water conservancy engineering construction technology, and in particular to a prefabricated integral hoisting multi-hole box culvert foundation formwork. Background Technology

[0002] Existing box culvert foundation construction typically uses wooden or steel formwork for support. While wooden formwork is cheaper, it lacks strength, is prone to deformation, and has a low reuse rate. Steel formwork, while stronger, is heavy, difficult to transport, and often requires modular assembly during construction. This leads to cumbersome installation and disassembly processes, high labor intensity, numerous joints, and significant grout leakage, making it difficult to guarantee the quality of concrete forming.

[0003] In the construction of large-scale, multi-span box culverts, the erection period for modular formwork is long, requiring a large number of temporary supports on site, occupying a large space, and making operation even more difficult when the construction site is limited, thus increasing safety risks. After the concrete is poured, the formwork needs to be dismantled piece by piece, which is inefficient and prone to damage during reuse and transportation.

[0004] Especially for multi-span box culvert projects with two or more spans, the existing formwork system lacks flexibility and scalability, often requiring redesign and reprocessing, which further increases construction costs and time.

[0005] Therefore, there is an urgent need for a prefabricated box culvert foundation formwork that can be assembled as a whole outside the working face, hoisted into place, and can achieve rapid assembly and overall demolding, in order to improve construction efficiency, ensure the quality of concrete forming, and reduce safety risks. Summary of the Invention

[0006] The purpose of this utility model is to overcome the above-mentioned shortcomings of the existing technology and provide a prefabricated integral hoisting multi-hole box culvert foundation formwork with reasonable structure, convenient assembly, and the ability to be hoisted and demolded as a whole.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an integral hoisting multi-hole box culvert foundation formwork, including an upper truss, armpit formworks equidistantly distributed at the bottom of the upper truss along the length direction of the upper truss, and outer wall formworks respectively connected to both ends of the upper truss. The armpit formworks are arranged perpendicular to the upper truss, and the upper truss is equidistantly distributed on the armpit formworks. The ends of the upper truss are all vertically fixedly connected to the outer formwork support frame, and the outer wall formwork is located at the angle between the upper truss and the outer formwork support frame.

[0008] Preferably, the upper truss includes an upper truss two located in the middle and an upper truss one connected to both ends of the upper truss two. The upper truss one and the upper truss two are located on the same vertical plane. The connecting ends of the upper truss one and the upper truss two are both equipped with channel steel and are fixedly connected by high-strength bolts.

[0009] Preferably, the armpit templates are distributed in pairs, and the bottom of both the upper truss one and the upper truss two are connected to a pair of armpit templates. The armpit templates are arranged at an angle, and the bottom distance between the two pairs of armpit templates is smaller than the top distance.

[0010] Preferably, a triangular connecting structure is fixedly connected to the top inner side of the armpit template. The connecting structure is fixedly connected to the bottom of the upper truss by a single fastener, and at least two single fasteners are configured on a single connecting structure.

[0011] Preferably, the bottom of the outer formwork support is fixedly connected to the outer side wall of the outer wall template by a single fastener, and the bottom of the outer formwork support is provided with an extended end, which is connected to the bottom of the outer wall template.

[0012] Preferably, steel pipes are connected between adjacent upper trusses, and the steel pipes are connected to the top of the upper trusses by swivel fasteners.

[0013] Preferably, all the steel pipes are arranged in a shear bracing structure, and the corners of the shear bracing structure are distributed along the top edge of the entire foundation formwork.

[0014] This utility model provides an integral hoisting multi-hole box culvert foundation formwork, which has the following beneficial effects.

[0015] 1. The formwork and support are connected as a whole, which has high rigidity and good stability, and can effectively ensure the quality of concrete molding.

[0016] 2. The formwork can be pre-assembled outside the working surface, and only overall hoisting is required on site, which greatly shortens the construction cycle and reduces labor intensity.

[0017] 3. The entire mold can be ejected, avoiding disassembly piece by piece, which is efficient and reduces safety hazards.

[0018] 4. The formwork system is scalable and can adapt to the construction of multi-span box culverts. It is highly versatile and reduces construction costs.

[0019] 5. The templates are reusable, saving resources and resulting in significant economic benefits.

[0020] 6. Its own structural stability can reduce the use of external diagonal bracing and other accessories, further simplifying the construction process and improving overall safety. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a structural schematic diagram of the prefabricated integral hoisting two-span box culvert foundation template of this utility model.

[0022] Figure 2This is a structural schematic diagram of the prefabricated integral hoisting three-hole box culvert foundation template of this utility model.

[0023] Figure 3 This is a schematic diagram showing the connection between the external wall formwork and the external formwork support.

[0024] Figure 4 This is a schematic diagram of the connection of the upper truss 1-4.

[0025] Figure 5 This is a schematic diagram of the connection of the upper truss 25.

[0026] Figure 6 This is a schematic diagram of the bolt and scissor brace connections between the upper trusses of a two-span box culvert.

[0027] Figure 7 This is a schematic diagram of the bolt and scissor brace connections between the upper trusses of a three-span box culvert.

[0028] In the diagram: 1. Exterior wall formwork; 2. Armhole formwork; 3. External formwork support frame; 4. Upper truss one; 5. Upper truss two; 6. Single fastener; 7. Swivel fastener; 8. Steel pipe. Detailed Implementation

[0029] like Figures 1-5 As shown, a prefabricated, integrally hoisted multi-span box culvert foundation formwork includes an outer wall formwork 1, a side formwork 2, an outer formwork support 3, an upper truss 4, and an upper truss 5. Single fasteners 6 are welded to both the outer wall formwork 1 and the side formwork 2; the outer formwork support 3 is connected to the outer wall formwork 1 via the single fasteners 6; the upper truss 4 and upper truss 5 are connected to the side formwork 2 via the single fasteners 6; the upper truss 4 and upper truss 5 are connected by bolts; the outer formwork support 3 is connected to the upper truss 4 and upper truss 5 via swivel fasteners 7; the upper truss 4 and upper truss 5 are connected by steel pipes 8 and swivel fasteners 7 in a scissor bracing manner, making the entire formwork and support system an integral whole.

[0030] The construction process of this utility model includes the following steps: Assembly process: The entire structure is assembled externally on the construction work surface. First, the outer wall formwork 1, outer formwork support 3, and upper truss 4 are connected using single couplers 6 and swivel couplers 7 to form the outer section; simultaneously, the underarm formwork 2 and upper truss 5 are connected using single couplers 6 to form the inner section. Then, upper truss 4 and upper truss 5 are connected using high-strength bolts to form the overall frame. Finally, steel pipes 8 and swivel couplers 7 are used to connect upper truss 4 and upper truss 5 in a scissor bracing manner to enhance overall stability.

[0031] hoisting process: After the template system is assembled, it is hoisted to the box culvert foundation construction location using hoisting equipment, and concrete is poured after adjustment and positioning.

[0032] Disassembly process: After the concrete strength reaches the design requirement for demolding strength, first disconnect the high-strength bolt connection and scissor bracing between the upper truss 4 and the upper truss 5, and then hoist and dismantle the inner and outer parts of the formwork system respectively.

[0033] Therefore, the prefabricated, integrally hoisted multi-hole box culvert foundation formwork system provided by this utility model possesses both excellent overall rigidity and flexible expansion performance. It can be quickly assembled off-site, hoisted as a whole, and efficiently demolded, significantly shortening the construction cycle of the box culvert foundation. This system not only effectively ensures the forming quality and appearance of the concrete structure, but also greatly reduces the safety risks and labor intensity caused by high-altitude operations and repeated disassembly and assembly. At the same time, its reusability and adaptability to multi-hole structures further improve economic efficiency and the level of green construction. It has important application value for promoting the standardization and prefabricated construction of cast-in-place box culverts in municipal and water conservancy projects.

Claims

1. A prefabricated, integrally hoisted multi-hole box culvert foundation formwork, characterized in that: It includes an upper truss, armpit templates (2) that are equidistantly distributed at the bottom of the upper truss along the length of the upper truss, and outer wall templates (1) that are respectively connected to both ends of the upper truss. The armpit templates (2) are arranged perpendicular to the upper truss, and the upper truss is equidistantly distributed on the armpit templates (2). The ends of the upper truss are all vertically fixedly connected to the outer formwork frame (3). The outer wall template (1) is located at the angle between the upper truss and the outer formwork frame (3).

2. The prefabricated integral hoisting multi-hole box culvert foundation formwork as described in claim 1, characterized in that: The upper truss includes an upper truss two (5) located in the middle and an upper truss one (4) connected to both ends of the upper truss two (5). The upper truss one (4) and the upper truss two (5) are located on the same vertical plane. The connection ends of the upper truss one (4) and the upper truss two (5) are both equipped with channel steel and are fixedly connected by high-strength bolts.

3. The prefabricated integral hoisting multi-hole box culvert foundation formwork as described in claim 2, characterized in that: The armpit templates (2) are distributed in pairs. The bottom of the upper truss one (4) and the upper truss two (5) are each connected to a pair of armpit templates (2). The armpit templates (2) are arranged at an angle, and the bottom distance of the same pair of armpit templates (2) is smaller than the top distance.

4. The prefabricated integral hoisting multi-hole box culvert foundation formwork as described in claim 3, characterized in that: The inner top of the armpit template (2) is fixedly connected to a triangular connecting structure. The connecting structure is fixedly connected to the bottom of the upper truss by a single fastener (6), and at least two single fasteners (6) are configured on a single connecting structure.

5. The prefabricated integral hoisting multi-hole box culvert foundation formwork as described in claim 1, characterized in that: The bottom of the outer formwork support (3) is fixedly connected to the outer wall of the outer wall template (1) by a single fastener (6). The bottom of the outer formwork support (3) is provided with an extended end, which is connected to the bottom of the outer wall template (1).

6. The prefabricated integral hoisting multi-hole box culvert foundation formwork as described in claim 1, characterized in that: A steel pipe (8) is connected between adjacent upper trusses, and the steel pipe (8) is connected to the top of the upper truss by a swivel coupler (7).

7. The prefabricated integral hoisting multi-hole box culvert foundation formwork as described in claim 6, characterized in that: All the steel pipes (8) are arranged in a shear bracing structure, and the corners of the shear bracing structure are distributed along the top edge of the entire foundation template.

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