Standard knot shaft prefabricated steel formwork

Abstract

The utility model provides a standard knot shaft prefabricated steel formwork, relates to the technical field of assembly type buildings, and aims to improve construction efficiency and guarantee safety and quality. The formwork is composed of a cylindrical steel formwork body with an inner ring and an outer ring separable, annular angle steel and a U-shaped groove are arranged between the cylindrical steel formwork body and the cylindrical steel formwork body, and the gap width is accurately matched so as to form a rapid splicing structure. The construction method is characterized in that the construction method comprises flexible arrangement of annular components and symmetrical split design of the formworks, the outer-ring formwork is fixed through end face bolts, the inner-ring formwork is provided with gaps and movable baffles, the formworks can be conveniently taken out after deformation, the concrete pouring quality is not affected, and meanwhile the reusability of the formworks is guaranteed. According to the design, the pouring process of the standard knot shaft is simplified, the construction speed is increased, the assembling and disassembling efficiency of the formwork and the cyclic utilization rate of materials are improved through the modular design, and an efficient and safe solution is provided for a complex construction site.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled buildings, in particular to a prefabricated steel template for a standard-section shaft. Background Art

[0002] In the current construction of outdoor water supply and drainage systems in large factories (mines), we are faced with a series of complex and huge engineering challenges. Specifically, these projects cover a wide range of subsystems, including domestic water supply, production water supply, recycled water circulation, fire water supply, domestic sewage discharge, rainwater collection, oily wastewater treatment, and different types of production wastewater treatment. Each subsystem is independent of each other but interrelated to form a water supply and drainage system. With the acceleration of the industrialization process, the construction of these systems is not only huge in number, but also puts forward higher requirements for the efficiency, safety and economy of construction.

[0003] In particular, the standard circular inspection wells that are indispensable in outdoor water supply and drainage projects have become a key link in construction. Some factory projects require the construction of thousands of standard circular inspection wells, and accordingly, the cumulative length of standard section wells is as high as tens of thousands of meters. This data directly reflects the heavy workload of the project. Under the traditional construction method, on-site pouring of inspection wells is not only time-consuming and inefficient, but also greatly affected by weather and environmental factors, making it difficult to ensure construction quality and progress consistency, while also increasing construction costs and safety risks. Utility Model Content

[0004] The utility model aims to provide a standard section shaft prefabricated steel template, which can adapt to complex and changeable on-site working conditions, improve construction efficiency, and ensure construction safety and quality control.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A standard section shaft prefabricated steel template, characterized in that it comprises a cylindrical inner ring template and an outer ring template, the outer ring template is sleeved outside the inner ring template, and there is a gap between the inner ring template and the outer ring template;

[0007] An annular angle steel and an annular U-shaped groove are installed between the inner ring template and the outer ring template, and the sum of the widths of the annular angle steel and the annular U-shaped groove is equal to the width of the gap between the inner ring template and the outer ring template;

[0008] The annular angle steel is installed at the bottom of the inner ring template and the annular U-shaped groove is installed at the top of the outer ring template; or, the annular angle steel is installed at the bottom of the outer ring template and the annular U-shaped groove is installed at the top of the inner ring template.

[0009] Furthermore: the inner ring template, the outer ring template, the annular U-shaped groove, and the annular angle steel are all separated into two symmetrical parts along the same diameter direction.

[0010] Furthermore, an end face 1 is provided at the separation position of the outer ring template, and the end faces 1 on the two parts of the outer ring template are fitted to each other.

[0011] Furthermore, the end faces on the two outer ring templates are fixed by bolts.

[0012] Further: the separation part of the inner ring template is provided with an end face 2, and a gap and a baffle for blocking the gap are provided between the end faces 2 on the two parts of the inner ring template, and the baffle is connected to one part of the inner ring template. The remaining margin can be slightly bent inward when the inner ring template is disassembled, so that its diameter becomes smaller and it is convenient to take out; the baffle is used to block the concrete from flowing out of the gap when pouring the standard section shaft, and when the inner ring template is bent inward, the thin baffle can be staggered between the inner ring template and the prefabricated standard section shaft, which does not affect the inward bending of the inner ring template and also helps to separate the inner ring template from the prefabricated standard section shaft.

[0013] Furthermore, the end faces of the two inner ring templates are fixed by bolts.

[0014] Furthermore, the annular U-shaped groove is connected to the outer ring template or the inner ring template by bolts.

[0015] Compared with the original technology, the utility model has the following beneficial effects:

[0016] 1. The utility model can be used to quickly cast a standard prefabricated section shaft with a quick joint interface. It only needs to pour concrete into the gap between the inner ring template and the outer ring template. The annular U-shaped groove and the annular angle steel are respectively used to form the male head and the female head of the quick joint interface.

[0017] Second, in the utility model, the outer ring template, the inner ring template and the annular U-shaped groove are designed to be separated and fixed by bolts, which is convenient for disassembly and assembly, and is conducive to disassembly and assembly of the template when recycling the template.

[0018] 3. There is a gap between the two parts of the inner circle template. The remaining margin can be used to slightly bend the inner circle template inward when removing the inner circle template, so that its diameter becomes smaller and it is easier to remove. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic top view of the utility model;

[0020] Figure 2 It is a semi-section schematic diagram of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the outer ring template;

[0022] Figure 4 It is a structural schematic diagram of the inner circle template;

[0023] In the figure:

[0024] 1. Outer ring template; 1.1. End face one; 2. Inner ring template; 2.1. End face two; 2.2. Baffle; 3. Annular U-shaped groove; 4. Annular angle steel; 5. Standard section wellbore. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] like Figure 1 As shown: a prefabricated steel template for a standard section shaft 5, characterized in that: it includes a cylindrical inner ring template 2 and an outer ring template 1, the outer ring template 1 is sleeved outside the inner ring template 2, and there is a gap between the inner ring template 2 and the outer ring template 1; an annular angle steel 4 and an annular U-shaped groove 3 are installed between the inner ring template 2 and the outer ring template 1, and the sum of the widths of the annular angle steel 4 and the annular U-shaped groove 3 is equal to the width of the gap between the inner ring template 2 and the outer ring template 1; the annular angle steel 4 is installed at the bottom of the outer ring template 1 in affixed manner to the outer ring template 1, and the annular U-shaped groove 3 is installed at the top of the inner ring template 2 in affixed manner to the inner ring template 2

[0028] The inner ring template 2, the outer ring template 1, the annular U-shaped groove 3, and the annular angle steel 4 are all separated into two symmetrical parts along the same diameter direction. The separation of the outer ring template 1 is provided with an end face 1.1, and the end faces 1.1 on the two parts of the outer ring template 1 fit each other; the end faces 1.1 on the two parts of the outer ring template 1 are fixed by bolts. The separation of the inner ring template 2 is provided with an end face 2.1, and a gap and a baffle 2.2 for blocking the gap are provided between the end faces 2.1 on the two parts of the inner ring template 2, and the baffle 2.2 is connected to one part of the inner ring template 2; the end faces 2.1 on the two parts of the inner ring template 2 are fixed by bolts.

[0029] The annular U-shaped groove 3 is connected to the inner ring template 2 by bolts.

[0030] The working principle of the utility model is as follows:

[0031] First, according to the design requirements, the standard section shaft 5 prefabricated steel formwork is composed of an inner ring formwork 2 and an outer ring formwork 1, which form a cylindrical shape, and a certain gap is reserved between them to accommodate concrete. The inner ring formwork 2 and the outer ring formwork 1 are each divided into two symmetrical parts along the diameter direction, and an end face is provided at the separation point for easy connection. The two parts of the outer ring formwork 1 are attached to each other through the end face 1.1 and fastened with bolts to ensure the sealing and stability of the outside. Similarly, the two parts of the inner ring formwork 2 are also matched through the end face 2.1, and a baffle 2.2 and a gap are provided in the middle to allow fine-tuning of the inner diameter size, which is convenient for flexible removal of the formwork during disassembly, and then the two parts are also fixed with bolts.

[0032] Inside the template, the annular angle steel 4 is precisely installed at the bottom or top of the outer ring template 1 to fit it, while the annular U-shaped groove 3 is installed at the top of the outer ring template 1 to correspond to it. The sum of the widths of the two structural parts, the annular angle steel 4 and the annular U-shaped groove 3, matches the gap between the inner and outer templates to form the quick splicing interface structure required for the prefabrication of the standard section shaft 5, that is, the male and female head shapes.

[0033] During construction, the prefabricated inner and outer ring templates 1 are assembled into a complete cylindrical structure by bolts to ensure that all parts fit tightly and correctly. Then, a release agent is evenly applied to the annular cavity formed by the inner and outer templates, and then concrete is poured into the cavity until it is filled. A gap is left between the two parts of the inner ring template 2, and the remaining margin can be slightly bent inward when the inner ring template 2 is removed, so that its diameter becomes smaller and it is convenient to remove. The baffle 2.2 is used to prevent concrete from flowing out of the gap when pouring the standard section shaft 5, and when the inner ring template 2 is bent inward, the thin baffle 2.2 can be staggered between the inner ring template 2 and the prefabricated standard section shaft 5, which does not affect the inward bending of the inner ring template 2 and also helps to separate the inner ring template 2 from the prefabricated standard section shaft 5. After the concrete is cured to a sufficient strength (usually 80% of the design strength), the outer template is removed and the mold surface is cleaned for reuse.

[0034] The presence of the annular U-shaped groove 3 and the annular angle steel 4 not only improves the stability and precision of the prefabricated parts as structural reinforcements, but also pre-forms a standard quick-joining interface, so that the prefabricated shaft segments can be quickly and accurately connected during on-site installation, greatly improving the construction efficiency, while ensuring the sealing of the interface and the integrity of the structure, which is conducive to construction safety and quality control. The entire design fully considers the reusability of the template and the convenience of on-site construction. Through modular design and bolt connection, the installation and disassembly process is simplified, and the construction difficulty and cost are reduced.

[0035] The above implementation is only to illustrate the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A standard section shaft prefabricated steel formwork, characterized in that: It includes a cylindrical inner ring template and an outer ring template, the outer ring template is sleeved outside the inner ring template, and there is a gap between the inner ring template and the outer ring template; An annular angle steel and an annular U-shaped groove are installed between the inner ring template and the outer ring template, and the sum of the widths of the annular angle steel and the annular U-shaped groove is equal to the width of the gap between the inner ring template and the outer ring template; The annular angle steel is installed at the bottom of the inner ring template and the annular U-shaped groove is installed at the top of the outer ring template; or, the annular angle steel is installed at the bottom of the outer ring template and the annular U-shaped groove is installed at the top of the inner ring template.

2. A standard section shaft prefabricated steel formwork according to claim 1, characterized in that: The inner ring template, the outer ring template, the annular U-shaped groove and the annular angle steel are all separated into two symmetrical parts along the same diameter direction.

3. A standard section shaft prefabricated steel formwork according to claim 2, characterized in that: An end face one is arranged at the separation position of the outer ring template, and the end faces one on the two parts of the outer ring template are fitted to each other.

4. A standard section shaft prefabricated steel formwork according to claim 3, characterized in that: The end faces on the two outer ring templates are fixed by bolts.

5. The standard section shaft prefabricated steel formwork according to claim 2 is characterized in that: The separation position of the inner ring template is provided with end face two, and a gap and a baffle for blocking the gap are provided between the end faces two on the two parts of the inner ring template, and the baffle is connected to one part of the inner ring template.

6. A standard section shaft prefabricated steel formwork according to claim 5, characterized in that: The end faces on the two inner ring templates are fixed by bolts.

7. The standard section shaft prefabricated steel formwork according to claim 1 is characterized by: The annular U-shaped groove is connected to the outer ring template or the inner ring template by bolts.

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