Municipal pipeline concrete foundation typified formwork and construction method thereof

Abstract

The invention discloses a municipal pipeline concrete foundation typified formwork and a construction method, and relates to the technical field of municipal pipeline construction.The formwork comprises side formworks symmetrically arranged on the two sides of a pipeline, a pipeline connecting piece assembled on the periphery of the pipeline and provided with a connecting part, and a tying component penetrating through the side formworks and the connecting part; during construction, firstly, the pipeline connecting piece is assembled on the periphery of a pipeline, then the side formwork is positioned through the tying component, concrete is poured after the side formwork is fixed through the ground fixing piece, and the component is disassembled and reused after forming. And mounting and dismounting are convenient and fast, the construction efficiency is improved, and the repeated utilization rate of the formwork is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of municipal pipeline construction, in particular to a municipal pipeline concrete foundation forming template and a construction method thereof. BACKGROUND

[0002] In municipal pipeline network engineering, concrete pipelines and reinforced concrete pipelines often adopt concrete foundations, among which 120° concrete foundations are particularly common. At present, when such foundations are constructed, the template support technology mostly uses wooden templates as side templates, increases ground nails on the outside of the templates to fix the position, and uses one end of a square wood to tightly press the side template and the other end to support the ground or the side wall of the trench to resist the lateral pressure during concrete pouring. Although some projects use steel templates as side templates, the fixing method of the side templates is basically the same as that of the wooden templates.

[0003] However, the existing technology has obvious defects: the ground nails and the square wood only bear the lateral pressure on the outside of the template, and the inside of the template cannot be effectively set up a pulling measure due to the obstruction of the pipeline; the square wood needs to be assembled and fixed in multiple ways, and in narrow areas, it needs to be directly supported on the side wall of the trench. If the ground or the side wall of the trench is a soil layer, it is easy to cause the template to run off due to unstable fixation. At the same time, the square wood support process consumes a large amount of labor, is time-consuming and labor-intensive, and seriously affects the construction efficiency and the quality of foundation construction, so there is an urgent need for a template solution that can solve the above problems. SUMMARY

[0004] The present application aims to provide a municipal pipeline concrete foundation forming template and a construction method to solve the problems of low positioning accuracy, complicated installation and disassembly, poor adaptability (difficult to be compatible with different pipe diameters), insufficient stability and low reuse rate of the template in the construction of the existing municipal pipeline concrete foundation. By setting up a pipeline connecting piece with a connecting part and a pulling component, the side template and the pipeline are quickly and accurately positioned and laterally stabilized; by using side templates and pipeline connecting pieces that are compatible with multiple pipe diameters, the versatility of the template is improved; by combining ground fixing pieces to enhance the overall stability, and by simplifying the assembly and disassembly steps to improve the construction efficiency, the template is reused, and the construction cost is reduced.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a municipal pipeline concrete foundation forming template, comprising: at least two side templates, symmetrically arranged on both sides of the municipal pipeline, for defining the forming range of the concrete foundation; a plurality of pipeline connecting pieces assembled on the outer periphery of the municipal pipeline, the pipeline connecting pieces being provided with outwardly extending connecting parts; a pulling component penetrating through the connecting parts of the side templates and the pipeline connecting pieces, for fixedly connecting the side templates and the pipeline connecting pieces to provide lateral pulling force; a plurality of ground fixing pieces assembled on the bottom of the side templates, for fixing the side templates to the ground to achieve overall stability of the template.

[0006] To further optimize this invention, the following technical solutions may be preferred: Preferably, the side formwork is a steel plate, and the height of the side formwork is adapted to the concrete foundation forming requirements of the maximum diameter and below of commonly used municipal pipelines.

[0007] Preferably, the pipe connector has an arc-shaped structure, with its curved section adapted to fit the outer periphery of the municipal pipe, and the connecting part is an extension protruding from both ends of the curved section, with through holes adapted to the tie-in component on the extension section.

[0008] Preferably, each section of municipal pipeline is equipped with no less than 3 of the aforementioned pipe connectors, which are evenly distributed along the pipeline axis.

[0009] Preferably, the tie-in component includes a screw and a nut, the screw is fixed to the connection part of the pipe connector, and the screw is locked and fixed by the nut after passing through the side template.

[0010] Preferably, the ground fixing component is a ground nail structure, and the bottom of the side template is provided with nail holes adapted to the ground nails. The ground nails pass through the nail holes and are driven into the ground to achieve fixation.

[0011] A construction method for a prefabricated formwork for a municipal pipeline concrete foundation includes the following steps: S1: After the municipal pipeline is installed, select pipe fittings that match the pipe diameter and assemble several pipe fittings around the outer perimeter of the municipal pipeline. S2: The side templates are symmetrically arranged on both sides of the pipe, so that the tie-up parts pass through the connection between the side templates and the pipe connectors. The side templates are locked and fixed by the tie-up parts to achieve positioning. S3: Fix the side formwork to the ground using ground fixing components to complete the overall formwork installation; S4: After the concrete pouring is completed and reaches the design strength, dismantle the ground fixing parts and tie parts, separate the side formwork from the pipe connection parts, and transfer them to the next construction section for reuse.

[0012] Preferably, in S1, each section of municipal pipeline is equipped with 3 pipe connectors, which are distributed at equal intervals along the pipeline axis.

[0013] Preferably, in S2, the connecting component is a combination of a screw and a nut. After the screw passes through the screw hole of the side template, the nut is tightened to make the side template and the pipe connector fit tightly together.

[0014] Preferably, in S4, the disassembly sequence is as follows: first remove the ground fixing parts, then loosen the locking structure of the tie parts, and finally separate the side template from the pipe connector.

[0015] The beneficial effects of this invention are mainly reflected in the following aspects: This reinforcement device for lightweight double-rail bridge erecting machines in extreme weather conditions has the following significant advantages compared to existing technologies: 1. Significantly improves formwork stability: By cooperating with pipe connectors and tie components, lateral tie force is provided from the inside of the pipe to the side formwork. Combined with the vertical fixation of the ground fixing components, a stable system with internal and external coordination is formed, which effectively resists the lateral pressure during concrete pouring. This solves the problem that existing processes rely solely on external support, which can easily lead to formwork displacement, and ensures the quality of foundation construction.

[0016] 2. Enhanced adaptability and versatility: The side template height is adapted to the most commonly used maximum pipe diameter and below. The pipe connector adopts an arc structure that can fit the outer circumference of pipes of different diameters. There is no need to customize templates for each pipe diameter, which greatly improves the compatibility of the template with various working conditions and reduces equipment investment costs.

[0017] 3. Improve construction efficiency: Simplify the formwork assembly and disassembly process. The tie-in components enable quick and accurate positioning of the side formwork and pipes. The ground fixing components are easy to install. When disassembling, the components can be separated by following the sequence of operations. This reduces tedious steps such as assembling square timber, saves labor costs, and speeds up the construction progress.

[0018] 4. Improve reusability: The side formwork is made of steel plate, and the pipe connectors, tie parts and ground fixing parts are all durable structures that can be transferred to the next construction section for reuse, reducing material consumption and conforming to the concept of green construction.

[0019] In summary, this invention, through structural optimization and process simplification, simultaneously solves the problems of poor template positioning, insufficient stability, low adaptability, low efficiency, and low reusability in existing templates, and has significant practical and economic value. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of a reinforced concrete pipe foundation. Figure 2 This is a cross-sectional view of a standardized steel formwork for concrete foundations of municipal pipelines. Figure 3 for Figure 2 Enlarged diagram of point A in the diagram; Figure 4 This is an installation application diagram of a standardized steel formwork for concrete foundations of municipal pipelines; Figure 5 This is an overall application diagram of a standardized steel formwork for concrete foundations of municipal pipelines.

[0021] Among them, 1-side formwork; 2-pipe connectors; 3-ground fixing components; 4-reinforced concrete pipes; 5-U-shaped cement blocks; 6-concrete pouring area; 201 - Screw; 202 - Nut. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention.

[0024] Example 1: A standardized formwork for concrete foundations of municipal pipelines, comprising: At least two side formwork panels 1 are symmetrically arranged on both sides of the municipal pipeline to define the forming range of the concrete foundation; Several pipe connectors 2 are assembled on the outer periphery of the municipal pipeline, and the pipe connectors are provided with outwardly extending connecting parts; A tie member, penetrating the connection between the side template and the pipe connector, is used to fix the side template and the pipe connector together to provide lateral tie force; Several ground fixing parts 3 are assembled at the bottom of the side formwork to fix the side formwork to the ground and achieve overall stability of the formwork.

[0025] As a preferred implementation, the side formwork is made of steel plate, and the height of the side formwork is adapted to the concrete foundation forming requirements of the maximum diameter of commonly used municipal pipelines and below.

[0026] As a preferred embodiment, the pipe connector has an arc-shaped structure, with its curved section adapted to fit the outer periphery of the municipal pipe, and the connecting part is an extension protruding from both ends of the curved section, with through holes adapted to the tie-in components on the extension section.

[0027] As a preferred implementation, each section of municipal pipeline is equipped with no less than 3 pipe connectors, which are evenly distributed along the pipeline axis.

[0028] As a preferred embodiment, the tie-in component includes a screw and a nut. The screw is fixed to the connection part of the pipe connector, and the screw is locked and fixed by the nut after passing through the side template.

[0029] As a preferred embodiment, the ground fixing component is a ground nail structure, and the bottom of the side template is provided with nail holes that are compatible with the ground nails. The ground nails pass through the nail holes and are driven into the ground to achieve fixation.

[0030] A construction method for a prefabricated formwork for a municipal pipeline concrete foundation includes the following steps: S1: After the municipal pipeline is installed, select pipe connectors that match the pipe diameter and assemble several pipe connectors on the outer periphery of the municipal pipeline; in S1, each section of municipal pipeline is equipped with 3 pipe connectors, and the pipe connectors are distributed at equal intervals along the pipe axis; S2: The side templates are symmetrically arranged on both sides of the pipe, and the tie-up component passes through the connection between the side template and the pipe connector. The tie-up component is used to lock and fix the side template, thereby achieving the positioning of the side template. In S2, the tie-up component is a combination of a screw and a nut. After the screw passes through the screw hole of the side template, the nut is tightened to make the side template and the pipe connector fit tightly together. S3: Fix the side formwork to the ground using ground fixing components to complete the overall formwork installation; S4: After the concrete pouring is completed and reaches the design strength, dismantle the ground fixing parts and tie parts, separate the side formwork from the pipe connectors, and transfer it to the next construction section for reuse. In S4, the dismantling sequence is as follows: first remove the ground fixing parts, then loosen the locking structure of the tie parts, and finally separate the side formwork from the pipe connectors.

[0031] I. Detailed structural description of components This embodiment is applicable to the construction of 120° concrete foundations for concrete pipes and reinforced concrete pipes 4 in municipal pipeline network projects. The specific design of each component is as follows: Side formwork 1: Made of Q235 steel plate with a thickness of 6mm. Its height is determined to be 500mm with reference to the maximum diameter of commonly used municipal pipelines (DN1200) and the corresponding concrete foundation design requirements. It can adapt to the construction needs of all small and medium-sized pipe diameters in the range of DN300-DN1200. The side formwork 1 has screw holes with a diameter of 16mm at the position corresponding to the pipe connection 2. A nail hole with a diameter of 20mm is opened every 500mm along the length of the bottom for the installation of ground fixing parts 3.

[0032] Pipe connector 2: It is an arc-shaped steel pipe clamp, made of seamless steel pipe. The bending radius is adapted to the outer circumference of the pipe of the corresponding diameter to ensure that the bent section fits tightly with the outer wall of the pipe. The connection part is an extension protruding from both ends of the bent section. The length of the extension is customized according to the design width of the concrete foundation corresponding to different pipe diameters (e.g., the extension length corresponding to DN600 pipe is 300mm). The end of the extension is provided with a through hole with a diameter of 16mm that is adapted to the tie component.

[0033] Tie-in components: including screw 201 and nut 202. Screw 201 is an M16 high-strength bolt, one end of which is welded and fixed to the through hole of the extended section of pipe connector 2. Its length exceeds the thickness of side template 1 + nut thickness + 20mm adjustment allowance. Nut 202 is a matching hexagonal nut, which is used with a flat washer to enhance the locking effect. Ground fixing component 3: It is a steel ground nail, made of Q235 steel, with a diameter of 20mm and a length of 350mm. It has a hammer cap on the top and a pointed cone shape at the bottom for easy driving into the ground.

[0034] Auxiliary components: A U-shaped cement pad 5 is provided below the reinforced concrete pipe 4 to support the pipe and ensure the thickness of the foundation pouring. The concrete pouring area 6 is the area defined between the side formwork 1 and the pipe.

[0035] II. Specific Construction Steps Combined with appendix Figures 1-5 The construction process of this invention is as follows: 1. Step S1: Pipe Connector Installation After the reinforced concrete pipe 4 is installed to the preset axis position and fixed, select the appropriate pipe connector 2 (arc-shaped steel pipe clamp) according to the current pipe diameter. Assemble 3 pipe connectors 2 at equal intervals along the axial direction for each pipe section. The spacing between adjacent pipe connectors 2 is 1 times the pipe diameter (e.g., 600mm for DN600 pipes). During assembly, ensure that the curved section of the pipe connector 2 fits tightly against the outer wall of the pipe without any loose gaps.

[0036] 2. Step S2: Side Template Assembly and Positioning. Arrange two side templates 1 symmetrically on both sides of the pipe. Adjust the verticality and horizontal position of the side templates 1 so that the screw holes on the side templates 1 correspond one-to-one with the screws 201 on the extended section of the pipe connector 2. Push the side templates 1 towards the pipe so that the six screws 201 (three on each side) pass through the corresponding screw holes. Place a flat washer and a nut 202 on the end of each screw 201 in sequence. Tighten the nut 202 with a wrench to ensure a tight fit between the side templates 1 and the extended section of the pipe connector 2, forming a stable lateral tension force and completing the precise positioning of the side templates 1.

[0037] 3. Step S3: Take the ground fixing part 3 (steel ground nail) to fix the side formwork, align it with the nail hole at the bottom of the side formwork 1, and use a hammer to vertically strike the hammer cap on the top of the ground nail so that the ground nail is embedded in the ground to a depth of not less than 200mm (not less than 1 / 3 of the height of the side formwork). Each side formwork 1 should be equipped with at least 2 ground nails along the length direction to ensure that the side formwork 1 is vertically stable and does not shake. At this point, the overall installation of the formwork is completed, forming a closed concrete pouring area 6.

[0038] 4. Step S4: Concrete Pouring and Formwork Removal. Pour concrete into the concrete pouring area 6, controlling the pouring speed during the process to avoid impacting the side formwork 1. After the concrete has cured to the design strength (usually 7 days), remove the formwork in the following order: First, use a nail puller to remove all ground fixing parts 3; then, use a wrench to loosen all nuts 202, remove the flat washers, and pull out the connection between the bolts 201 and the side formwork 1; finally, smoothly separate the side formwork 1 from the pipe connection parts 2 in the direction away from the pipe, clean all parts, and transfer them to the next construction section for reuse.

[0039] III. Precautions During the assembly process, the verticality deviation of the side formwork 1 must be ensured to be no more than 3‰ to avoid affecting the quality of the concrete foundation molding.

[0040] The tightening torque of nut 202 should be controlled at 30-40 N·m to ensure sufficient tension without damaging the components.

[0041] When dismantling the formwork, handle it gently to avoid collisions with the already formed concrete foundation and ensure that the foundation surface is flat and intact.

[0042] This specific embodiment is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any improvements or substitutions made by conventional technical means under the design concept of the present invention should fall within the scope of protection of the present invention.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A standardized formwork for concrete foundations of municipal pipelines, characterized in that, include: At least two side formwork panels are symmetrically arranged on both sides of the municipal pipeline to define the forming range of the concrete foundation. Several pipe connectors are assembled on the outer periphery of a municipal pipeline, and the pipe connectors are provided with outwardly extending connecting portions; A tie member extends through the connection between the side template and the pipe connector, and is used to fix the side template and the pipe connector together to provide lateral tie force; Several ground fixing components are assembled at the bottom of the side formwork to fix the side formwork to the ground and achieve overall stability of the formwork.

2. The standardized formwork for municipal pipeline concrete foundations according to claim 1, characterized in that, The side formwork is made of steel plate, and the height of the side formwork is adapted to the concrete foundation forming requirements of the maximum diameter and below of commonly used municipal pipelines.

3. The standardized formwork for municipal pipeline concrete foundations according to claim 1, characterized in that, The pipe connector has an arc-shaped structure, and its curved section is adapted to fit the outer periphery of the municipal pipe. The connecting part is an extension protruding from both ends of the curved section, and the extension section is provided with through holes adapted to the tie-in component.

4. The municipal pipeline concrete foundation formwork according to claim 3, characterized in that, Each section of municipal pipeline is equipped with no fewer than three of the aforementioned pipe connectors, which are evenly distributed along the pipeline axis.

5. The standardized formwork for municipal pipeline concrete foundations according to claim 1, characterized in that, The tie-in component includes a screw and a nut. The screw is fixed to the connection part of the pipe connector, and the screw is locked and fixed by the nut after passing through the side template.

6. The standardized formwork for municipal pipeline concrete foundations according to claim 1, characterized in that, The ground fixing component is a ground nail structure. The bottom of the side template is provided with nail holes that are compatible with the ground nails. The ground nails pass through the nail holes and are driven into the ground to achieve fixation.

7. A construction method for a standardized formwork for a municipal pipeline concrete foundation as described in any one of claims 1-6, characterized in that, Includes the following steps: S1: After the municipal pipeline is installed, select pipe fittings that match the pipe diameter and assemble several pipe fittings around the outer perimeter of the municipal pipeline. S2: The side templates are symmetrically arranged on both sides of the pipe, so that the tie-up parts pass through the connection between the side templates and the pipe connectors. The side templates are locked and fixed by the tie-up parts to achieve positioning. S3: Fix the side formwork to the ground using ground fixing components to complete the overall formwork installation; S4: After the concrete pouring is completed and reaches the design strength, dismantle the ground fixing parts and tie parts, separate the side formwork from the pipe connection parts, and transfer them to the next construction section for reuse.

8. A construction method for a prefabricated formwork for a municipal pipeline concrete foundation according to claim 7, characterized in that, In S1, each section of municipal pipeline is equipped with 3 pipe connectors, which are distributed at equal intervals along the pipeline axis.

9. A construction method for a prefabricated formwork for a municipal pipeline concrete foundation according to claim 7, characterized in that, In S2, the connecting component is a combination of a screw and a nut. After the screw passes through the screw hole of the side template, the nut is tightened to make the side template fit tightly with the pipe connector.

10. A construction method for a prefabricated formwork for a municipal pipeline concrete foundation according to claim 7, characterized in that, In S4, the disassembly sequence is as follows: first remove the ground fixing parts, then loosen the locking structure of the tie parts, and finally separate the side template from the pipe connection parts.

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