A sinking well assembly type formwork support system

Abstract

The application provides a sinking well assembly type formwork support system, and optimizes and innovates a standardized construction technology and a standardized construction technology in view of the problems of poor universality, low construction efficiency, high cost, and insufficient quality stability of a traditional sinking well construction. The technology adopts 1.8m single-layered standardized steel formwork, controls 1.7m effective pouring height of concrete, and implements a standardized construction mode of layered formwork, layered pouring, and sinking in batches. After pouring of every 2-4 sections is completed, sinking operation is implemented in batches. The formwork system is flexibly assembled through hinge connection and wedge-shaped components, can be adapted to sinking well structures of different sizes, has wide application range, is convenient to disassemble and assemble, and can be recycled between multiple working wells and receiving wells. The technology effectively guarantees the size precision of the sinking well structure and the appearance quality of the well wall, greatly reduces material investment, reduces construction cost, significantly improves construction efficiency, realizes coordinated improvement of quality, safety, and economic benefits, and can be widely applied to various sinking well projects, and has high popularization value.

Description

Technical Field

[0001] This invention belongs to the field of caisson construction, specifically relating to a prefabricated formwork support system for caissons. Background Technology

[0002] In caisson foundation construction, the working shaft and receiving shaft often use a uniform inner diameter and wall thickness design, but there are significant differences in shaft height. Currently, caisson formwork is mostly a custom-made, integral support system, which has poor versatility, cannot adapt to construction conditions with different shaft heights, and is cumbersome to assemble and disassemble, resulting in low turnover rate. Traditional formwork structures lack adaptability, easily leading to material waste and reduced construction efficiency, and failing to meet the requirements of standardized, prefabricated construction. Therefore, there is an urgent need to optimize the caisson formwork support structure. Summary of the Invention

[0003] To address the aforementioned issues, the present invention employs a standardized caisson formwork support system for the hoisting of tunnel segments and box culverts. This system allows for flexible construction in 1.8m standard segments, combining different sections, layered pouring, and phased sinking. It ensures both precise structural dimensions and high-quality concrete forming, while also enabling the reuse of multiple caissons. It offers advantages such as quick installation and dismantling, high construction efficiency, good economy, and safety and reliability, effectively adapting to the various caisson construction needs of this project.

[0004] This application relates to a prefabricated formwork support system for caissons, including multiple operating platforms, wherein each operating platform is composed of an outer mold composed of multiple outer formworks, an inner mold composed of multiple inner formworks, and a support bracket; the outer mold and the inner mold are concentric circular structures composed of multiple inner formworks and outer formworks; the inner formwork and the outer formwork are composed of arc-shaped steel formworks.

[0005] Furthermore, the plurality of operating platforms comprises an upper operating platform, a middle operating platform, and a lower operating platform, with a support bracket disposed between the outer mold and the inner mold for supporting and connecting the inner mold and the outer mold.

[0006] Furthermore, the support frame includes support frame 1, support frame 2, and support frame 3. Support frame 1 is used to support the upper operating platform, support frame 2 is used to support the middle operating platform, and support frame 3 is used to support the lower operating platform. The upper operating platform can freely assemble the inner and outer formwork, the middle operating platform is used to accommodate the poured concrete, and the lower operating platform is used to connect the caisson structure and the middle operating platform.

[0007] Furthermore, the supports 1, 2, and 3 are connected by HW-shaped steel 4, channel steel 14, and a footboard platform 5 to form an integral structure. The support 1 includes at least a footboard platform 5, a steel pipe upright 6, and perforated flat steel ears 9; the support 2 includes at least an angle steel 8, ear plates 10, a steel pipe upright 11, a steel sleeve 12, and an adjusting screw 13; the support 3 includes at least a channel steel 14, an angle steel 15, a reinforcing steel plate 16, an angle steel 17, an angle steel 18, and a channel steel 19; each support includes at least one triangular structure, and at least one side of the triangle in each support is different.

[0008] Furthermore, the angle steel 8 and the steel sleeve 12 in the bracket 2 are respectively connected to the pedal platform.

[0009] Furthermore, each arc-shaped steel formwork panel is 1.5m wide and 1.8m long; each steel formwork panel is fixed by at least two sets of cantilever supports and at least four tie rod systems, with the cantilever supports consisting of uprights, diagonal braces, and horizontal connecting beams.

[0010] Furthermore, each steel template consists of a 4mm thick panel, ribs, and flanges. The ribs are spaced no more than 300*300mm apart, and the flange spacing is 150mm. The steel templates are fixedly connected to each other with bolts.

[0011] Furthermore, each steel formwork consists of a 4mm thick panel, ribs, and flanges. The ribs are spaced no more than 300*300mm apart, and the flange spacing is 150mm. The steel formwork is connected to each other by hinges.

[0012] Furthermore, the angle between the connecting surface between the two curved surfaces of the steel formwork and the angle between the two curved surfaces of the arc-shaped steel formwork are different.

[0013] Furthermore, a wedge-shaped component is provided between two adjacent arc-shaped steel templates, wherein the sum of the wedge angle of the wedge component and the two included angles of the inner arc surface of the steel template and the connecting surface is 180°.

[0014] Compared with the prior art, this application has the following advantages: 1. Combined construction, layered pouring and multiple sinking, ensures accurate structural dimensions and concrete forming quality, while also enabling multiple wells to be reused. It has advantages such as quick installation and dismantling, high construction efficiency, good economy, and safety and reliability, and can effectively adapt to the construction needs of various caissons in this project.

[0015] Compared with existing ordinary segment or box culvert lifting tools, this invention patent has the following advantages due to the adoption of the above technical solution: This lifting tool is an integrated lifting tool for segments and box culverts, capable of lifting both segments and box culverts. Ordinary lifting tools require frequent tool changes during use, resulting in a large workload, manual replacement, low efficiency, and high cost. Ordinary lifting tools are mechanical, requiring manual assistance for positioning and gripping segments or box culverts during the lifting process. Ordinary tools use gravity clamping, which has low safety and reliability. The integrated automatic lifting tool can automatically position and clamp segments or box culverts without manual assistance, saving time and reducing labor costs. It also uses hydraulic automatic clamping and can monitor the clamping force. The automatic lifting tool has an automatic rotation function, automatically rotating at a certain angle during clamping and lifting to ensure that the orientation of segments and box culverts meets the requirements during clamping and unloading.

[0016] 2. The system adopts a single-layer standardized formwork with a height of 1.8m, controlling the effective concrete pouring height to 1.7m, achieving standardized construction of layered formwork support, layered pouring, and layered sinking. During construction, the system can be flexibly combined according to the actual depth, structural dimensions, and sinking conditions of each caisson, with sinking carried out after every 2-4 sections are poured. This standardized formwork support system is highly versatile, easy to install and dismantle, and can be reused in multiple working and receiving caissons. While effectively ensuring the accuracy of caisson structural dimensions, the appearance quality of the caisson wall, and construction safety, it significantly reduces material input, improves construction efficiency, and achieves a comprehensive improvement in quality, safety, and efficiency. Furthermore, by utilizing the hinged connections and wedge-shaped components of the steel formwork, the steel formwork can be flexibly configured and erected according to the size of the caisson, exhibiting strong adaptability, good flexibility, and excellent universality, greatly reducing pouring costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] The structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0019] Figure 1 This is a schematic cross-sectional view of the working well template of the present invention.

[0020] Figure 2 This is a schematic cross-sectional view of the support bracket for the working well template of the present invention.

[0021] Figure 3 This is a plan view of the working well template and support frame assembly of the present invention.

[0022] Figure 4 This is a detailed plan view of the cantilever support platform of the present invention.

[0023] Figure 5 This is a schematic diagram of the hinged connection of the template of the present invention.

[0024] Figure 6 This is a top view of the 3D design model of the present invention.

[0025] Figure 7 This is a cross-sectional view of the 3D design model of the present invention.

[0026] Figure 8 This is the actual construction drawing of the present invention.

[0027] The labels for each figure are as follows: 1. Upper operating platform; 2. Middle operating platform; 3. Lower operating platform 4. HW-shaped steel; 5. Pedal platform; 6. Steel pipe uprights. 7. Channel steel; 8. Angle steel; 9. Perforated flat steel ears 10 Ear plate 11 Steel pipe upright 12 Steel sleeve 13 Adjusting screw 14 Channel steel 15 Angle steel 16 Reinforced steel plate 17 Angle steel 18 Angle steel 19 Channel Steel Detailed Implementation The embodiments of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the following description is provided in conjunction with the appendix. Figure 1-7 The present application will be further described in detail with reference to specific embodiments.

[0029] This invention relates to a prefabricated formwork support system for caissons, see attached document. Figure 1 The caisson prefabricated formwork support system includes multiple operating platforms, each of which consists of an outer mold composed of multiple outer formworks, an inner mold composed of multiple inner formworks, and a support frame.

[0030] In one embodiment, the multiple operating platforms consist of an upper operating platform, a middle operating platform, and a lower operating platform, with a support bracket disposed between the outer mold and the inner mold to support and connect the inner mold and the outer mold.

[0031] In one embodiment, the support frame includes a support 1, a support 2, and a support 3. Support 1 supports the upper operating platform, support 2 supports the middle operating platform, and support 3 supports the lower operating platform. Operators can freely assemble the inner and outer formwork on the upper operating platform, the middle operating platform is used to accommodate the poured concrete, and the lower operating platform is used to connect the caisson structure and the middle operating platform.

[0032] In one embodiment, brackets 1, 2, and 3 are connected as a single structure via HW-shaped steel 4, channel steel 14, and a footboard platform 5. Bracket 1 includes at least the footboard platform 5, steel pipe uprights 6, and perforated flat steel ears 9; bracket 2 includes at least angle steel 8, ear plates 10, steel pipe uprights 11, steel sleeves 12, and adjusting screws 13; bracket 3 includes at least channel steel 14, angle steel 15, reinforcing steel plates 16, angle steel 17, angle steel 18, and channel steel 19. Each bracket includes at least one triangular structure, and at least one side of the triangle in each bracket is different. The angle steel 8 and steel sleeve 12 in bracket 2 are respectively connected to the footboard platform; this further enhances the stability of the brackets.

[0033] In one embodiment, the outer mold and the inner mold are concentric circular structures composed of multiple inner and outer templates; and the inner and outer templates are made of arc-shaped steel templates, with a single arc-shaped steel template having a width of 1.5m and a length of 1.8m; each steel template is fixed by at least two sets of cantilever supports and at least four tie rod systems, the cantilever supports being composed of uprights, diagonal braces and horizontal connecting beams, and further, each steel template includes a 4mm thick panel, ribs and flanges, the ribs being distributed at a spacing of no more than 300*300mm, and the flange spacing being 150mm.

[0034] The steel formwork is connected to each other using bolts.

[0035] During assembly, an integrated automatic lifting device is used, which can automatically position and clamp segments or box culverts without manual assistance, saving time and reducing labor costs. It also employs hydraulic automated clamping and can monitor the clamping force. This invention's integrated lifting device for segments and box culverts can lift both segments and box culverts. Ordinary lifting devices require frequent changes, which are labor-intensive, manual, inefficient, and costly. Ordinary lifting devices are mechanical, requiring manual assistance for positioning and clamping segments or box culverts. Ordinary devices use gravity clamping, which is unreliable. The integrated automatic lifting device automatically positions the segments and has an automatic rotation function, rotating at a specific angle during clamping and lifting to ensure the correct orientation during segment and box culvert clamping and unloading.

[0036] The system employs a single-layer standardized formwork with a height of 1.8m, controlling the effective concrete pouring height to 1.7m, achieving standardized construction through layered formwork support, layered pouring, and layered sinking. During construction, the system can be flexibly combined according to the actual depth, structural dimensions, and sinking conditions of each caisson, with sinking implemented after every 2-4 sections poured. This standardized formwork support system is highly versatile, easy to install and dismantle, and can be reused in multiple working and receiving caissons. While effectively ensuring the accuracy of caisson structural dimensions, the quality of the caisson wall appearance, and construction safety, it significantly reduces material input, improves construction efficiency, and achieves a comprehensive improvement in quality, safety, and economic benefits.

[0037] Single-layer molded templates can be connected by either fixed or hinged connections. Referring to the attached diagram, when using a hinged connection, the single-layer molded template has a flat side surface. By using wedge-shaped components at different angles to engage with the side surface of the single-layer molded template, the dimensions of the caisson formed by the side surface of the single-layer molded template can be adjusted to accommodate working wells of different diameters. To better secure the wedge-shaped components, a concave-convex mating structure can be configured between the template side and the wedge-shaped component side, thereby simultaneously securing the wedge-shaped components when the template is fixed.

[0038] It should be noted that, depending on the implementation needs, the various steps / components described in this application can be broken down into more steps / components, or two or more steps / components or parts of the operation of steps / components can be combined into new steps / components to achieve the purpose of this invention.

[0039] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0040] The various embodiments in this specification are described in a progressive, parallel, or combined manner. Each embodiment focuses on its differences from other embodiments, and similar or identical parts between embodiments can be referred to interchangeably. For the apparatuses disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0041] It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes the aforementioned element.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A prefabricated formwork support system for caissons, characterized in that: It includes multiple operating platforms, each of which consists of an outer mold composed of multiple outer templates, an inner mold composed of multiple inner templates, and a support frame; the outer and inner molds are concentric circle structures composed of multiple inner and outer templates; the inner and outer templates are made of arc-shaped steel templates.

2. The support system as described in claim 1, characterized in that: The multiple operating platforms consist of an upper operating platform, a middle operating platform, and a lower operating platform. A support bracket is disposed between the outer mold and the inner mold to support and connect the inner mold and the outer mold.

3. The support system as described in claim 2, characterized in that: The support frame includes support 1, support 2 and support 3. Support 1 is used to support the upper operating platform, support 2 is used to support the middle operating platform, and support 3 is used to support the lower operating platform. The inner and outer formwork can be freely assembled on the upper operating platform, the middle operating platform is used to accommodate the poured concrete, and the lower operating platform is used to connect the caisson structure and the middle operating platform.

4. The support system as described in claim 3, characterized in that: Supports 1, 2, and 3 are connected by HW-shaped steel 4, channel steel 14, and a footboard platform 5 to form an integral structure. Support 1 includes at least a footboard platform 5, a steel pipe upright 6, and perforated flat steel ears 9; support 2 includes at least an angle steel 8, ear plates 10, a steel pipe upright 11, a steel sleeve 12, and an adjusting screw 13; support 3 includes at least a channel steel 14, an angle steel 15, a reinforcing steel plate 16, an angle steel 17, an angle steel 18, and a channel steel 19; each support includes at least one triangular structure, and at least one side of the triangle in each support is different.

5. The support system as described in claim 4, characterized in that: The angle steel 8 and steel sleeve 12 in bracket 2 are respectively connected to the pedal platform.

6. The support system as described in claim 2, characterized in that: Each arc-shaped steel formwork panel is 1.5m wide and 1.8m long. Each steel formwork panel is fixed by at least two sets of cantilever supports and at least four tie rod systems. The cantilever supports consist of uprights, diagonal braces, and horizontal connecting beams.

7. The support system as described in claim 6, characterized in that: Each steel formwork consists of a 4mm thick panel, ribs, and flanges. The ribs are spaced no more than 300*300mm apart, and the flange spacing is 150mm. The steel formwork is fixed to each other with bolts.

8. The support system as described in claim 6, characterized in that: Each steel formwork consists of a 4mm thick panel, ribs, and flanges. The ribs are spaced no more than 300*300mm apart, and the flange spacing is 150mm. The steel formwork is connected to each other by hinges.

9. The support system as described in claim 8, characterized in that: The angle between the connecting surfaces of the two curved surfaces of the steel formwork is different from the angle formed between the two curved surfaces of the curved steel formwork.

10. The support system as described in claim 9, characterized in that: A wedge-shaped component is also provided between two adjacent arc-shaped steel formworks, wherein the sum of the wedge angle of the wedge component and the two included angles of the inner arc surface of the steel formwork and the connecting surface is 180°.

Images