Fabricated formwork of concrete prefabricated bridge deck slab

Abstract

The utility model relates to an assembly type formwork of a concrete prefabricated bridge deck slab, and belongs to the technical field of prefabricated bridge deck slab construction. The device comprises a steel mould table, the steel reinforcement framework is arranged on the steel mould table; the side formwork set is used for fixing the reinforcement cage to the steel formwork table, and the side formwork set comprises two sets of oppositely-arranged first side formworks and two sets of oppositely-arranged second side formworks; the first side mold is detachably arranged on the steel mold table and comprises a first bottom plate, a first vertical plate arranged on the first bottom plate and a step-shaped plate piece arranged on the outer side of the first vertical plate, and clamping grooves used for clamping the steel reinforcement framework are formed in the side walls of the first vertical plate and the step-shaped plate piece; and the second side mold is vertically arranged on the first side mold, is detachably arranged on the steel mold table and comprises an L-shaped bottom plate and a second vertical plate arranged on the L-shaped bottom plate, and the second vertical plate is provided with an open hole used for allowing the steel reinforcement framework to penetrate through.

Description

Technical Field

[0001] This application relates to the technical field of precast bridge deck construction, and particularly to an assembled formwork for a concrete precast bridge deck. Background Art

[0002] The bridge deck plays a key role in bridge engineering. It directly bears the vehicle load and effectively transfers the vehicle load to the steel-concrete composite beam to ensure the normal operation and safe operation of the overall bridge structure. Precast bridge decks have become the primary choice in bridge engineering, and the progress in their design and construction technologies will directly affect the durability of the bridge structure and construction efficiency. Precast bridge decks have advantages such as controllable quality and simplified construction sites in industrial production. In addition, the steel formwork of precast bridge decks has high strength and high durability, and can withstand the pressure and vibration generated during concrete pouring, ensuring the smooth and flat surface of the bridge deck.

[0003] In the context of rapid erection and assembled production in bridge engineering, concrete precast bridge decks will become the main development direction, and the stepped assembled formwork for precast bridge decks has broad application prospects. However, there are still some deficiencies in the existing precast bridge deck construction technologies, such as inconvenient formwork disassembly and low construction efficiency. Therefore, the research and development of a simple, convenient, easy-to-assemble and disassemble assembled formwork and construction method is of great significance for promoting the large-scale application of concrete precast bridge decks. Summary of the Invention

[0004] The embodiments of this application provide an assembled formwork for a concrete precast bridge deck to solve the problem in the related technologies that the assembly of concrete precast bridge decks is not convenient enough, affecting construction efficiency.

[0005] The embodiments of this application provide an assembled formwork for a concrete precast bridge deck, including:

[0006] A steel formwork table;

[0007] A steel bar framework, which is arranged on the steel formwork table;

[0008] A side formwork group for fixing the steel bar framework to the steel formwork table, which includes two sets of oppositely arranged first side formworks and two sets of oppositely arranged second side formworks;

[0009] The first side formwork is detachably arranged on the steel formwork table and includes a first bottom plate, a first vertical plate arranged on the first bottom plate, and a stepped plate member arranged outside the first vertical plate. The first vertical plate and the side wall of the stepped plate member are provided with clamping grooves for clamping the steel bar framework;

[0010] The second side mold is vertically arranged on the first side mold and is detachably arranged on the steel mold table. It includes an "L"-shaped bottom plate and a second vertical plate arranged on the "L"-shaped bottom plate. An opening for passing through the steel bar framework is arranged on the second vertical plate.

[0011] In some embodiments, it further includes multiple groups of outer edge shear groove templates and core mold templates. Grooves for clamping and fixing with the steel bar framework are arranged on both the outer edge shear groove templates and the core mold templates.

[0012] In some embodiments, the first side mold and the second side mold are fixed by G-type clamps.

[0013] In some embodiments, multiple steel profiles for support are arranged at intervals at the bottom of the steel mold table.

[0014] In some embodiments, the first bottom plate is fixed to the steel mold table by a magnetic absorber.

[0015] In some embodiments, the "L"-shaped bottom plate is fixed to the steel mold table by a magnetic absorber.

[0016] In some embodiments, the stepped plate member and the first bottom plate are fixedly connected by a bolt plate.

[0017] In some embodiments, bolt grooves for matching the bolt plate are arranged on both the stepped plate member and the first bottom plate.

[0018] In some embodiments, a baffle for preventing cement from overflowing is arranged on one side of the first bottom plate.

[0019] In some embodiments, stiffening plates are vertically arranged along the length direction on both the "L"-shaped bottom plate and the second vertical plate.

[0020] The beneficial effects brought by the technical solution provided by this application include:

[0021] An embodiment of the present application provides an assembled formwork for a precast concrete bridge deck, which includes a steel formwork table; a steel bar framework disposed on the steel formwork table; a side formwork group for fixing the steel bar framework to the steel formwork table, which includes two sets of oppositely arranged first side formworks and two sets of oppositely arranged second side formworks; the first side formwork is detachably disposed on the steel formwork table and includes a first bottom plate, a first vertical plate disposed on the first bottom plate, and a stepped plate member disposed outside the first vertical plate, and clamping grooves for clamping the steel bar framework are formed in the first vertical plate and the side wall of the stepped plate member; the second side formwork is vertically disposed on the first side formwork and is detachably disposed on the steel formwork table, and includes an "L"-shaped bottom plate and a second vertical plate disposed on the "L"-shaped bottom plate, and an opening for passing through the steel bar framework is formed in the second vertical plate.

[0022] In actual use, the steel formwork table serves as the basic support platform for the entire formwork system, ensuring the stability and load-bearing capacity of the formwork. The steel bar framework is pre-placed on the steel formwork table to form the framework structure of the bridge deck, providing support for concrete pouring. The side formwork group is responsible for firmly fixing the steel bar framework on the steel formwork table to ensure the stable position of the steel bar framework during the concrete pouring process. It consists of two sets of oppositely arranged first side formworks and two sets of oppositely arranged second side formworks, jointly forming a complete side formwork structure. The first side formwork is detachably installed on the steel formwork table, facilitating the assembly and disassembly of the formwork. It includes a first bottom plate, a first vertical plate, and a stepped plate member. The first bottom plate provides a connection interface with the steel formwork table. The first vertical plate is perpendicular to the first bottom plate, and clamping grooves are formed in its side wall for clamping the steel bar framework. In practice, hook structures are provided on both sides of the steel bar framework, and clamping grooves are provided on the side walls of both the first vertical plate and the stepped plate member for clamping the hook structures of the steel bar framework. After the clamping installation is completed, components such as structural adhesive can be used for perfusion to ensure the airtightness and integrity of the structure. This stepped setting of the stepped plate member can improve the stability of the structure while reducing the occupied space. The second side formwork is vertically disposed on the first side formwork to form another side of the formwork. It is detachably installed on the steel formwork table and includes an "L"-shaped bottom plate and a second vertical plate. The "L"-shaped bottom plate provides a connection interface with the steel formwork table and ensures the stability of the second side formwork. The second vertical plate is perpendicular to the "L"-shaped bottom plate, and an opening is formed thereon for passing through the steel bars of the steel bar framework to achieve the fixation of the steel bar framework. The assembled formwork for the precast concrete bridge deck of the present application realizes the rapid and convenient disassembly and assembly of the formwork through the fixing method of the side formwork group and the steel bar framework, significantly improving the construction efficiency. At the same time, the formwork system also has high stability and load-bearing capacity, ensuring the construction quality of the precast bridge deck. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure provided by the embodiment of the present application;

[0025] Figure 2 is Figure 1 the top view of;

[0026] Figure 3 is Figure 1 the side view of;

[0027] Figure 4 is Figure 1 the front view of;

[0028] Figure 5 is Figure 1 a schematic diagram of the outer edge shear groove formwork in;

[0029] Figure 6 is Figure 1 a schematic diagram of the core formwork in.

[0030] Reference numerals:

[0031] 1. Steel formwork table; 2. Section steel; 3. Steel bar cage; 4. First vertical plate; 5. Stepped plate member; 6. First bottom plate; 7. Second vertical plate; 8. "L"-shaped bottom plate; 9. Magnetic absorber; 10. Bolt plate; 11. Bolt groove; 12. Bolt; 13. Baffle; 14. Connecting side plate; 15. Stiffening plate; 16. Outer edge shear groove formwork; 17. Core formwork. Specific embodiments

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0033] The embodiment of the present application provides an assembled formwork for a precast concrete bridge deck, which can solve the problems of inconvenience and low construction efficiency existing in the assembly process of precast concrete bridge decks in related technologies.

[0034] See Figure 1 andFigure 2 As shown in Figure 2 , an assembled formwork for a precast concrete bridge deck provided by an embodiment of the present application includes: a steel formwork table 1; a steel bar framework 3 disposed on the steel formwork table 1; and a side formwork group for fixing the steel bar framework 3 to the steel formwork table 1, which includes two sets of oppositely arranged first side forms and two sets of oppositely arranged second side forms. The first side form is detachably disposed on the steel formwork table 1 and includes a first bottom plate 6, a first vertical plate 4 disposed on the first bottom plate 6, and a stepped plate member 5 disposed outside the first vertical plate 4. The first vertical plate 4 and the side wall of the stepped plate member 5 are provided with clamping grooves for clamping the steel bar framework 3. The second side form is vertically disposed on the first side form and is detachably disposed on the steel formwork table 1, and includes an "L"-shaped bottom plate 8 and a second vertical plate 7 disposed on the "L"-shaped bottom plate 8. An opening for passing through the steel bar framework 3 is provided on the second vertical plate 7.

[0035] In actual use, the steel formwork table 1 serves as the basic support platform for the entire formwork system, ensuring the stability and load-bearing capacity of the formwork. The steel bar framework 3 is pre-placed on the steel formwork table 1 to form the framework structure of the bridge deck, providing support for concrete pouring. The side formwork group is responsible for firmly fixing the steel bar framework 3 on the steel formwork table 1 to ensure the stable position of the steel bar framework 3 during the concrete pouring process. It consists of two sets of oppositely arranged first side forms and two sets of oppositely arranged second side forms, jointly forming a complete side form structure. The first side form is detachably installed on the steel formwork table 1, facilitating the assembly and disassembly of the formwork. It includes a first bottom plate 6, a first vertical plate 4, and a stepped plate member 5. The first bottom plate 6 provides a connection interface with the steel formwork table 1. The first vertical plate 4 is perpendicular to the first bottom plate 6, and its side wall is provided with a clamping groove for clamping the steel bar framework 3. In practice, hook structures are provided on both sides of the steel bar framework 3. The side walls of the first vertical plate 4 and the stepped plate member 5 are both provided with clamping grooves for clamping the hook structures of the steel bar framework 3. After the clamping installation is completed, components such as structural adhesive can be used for perfusion to ensure the airtightness and integrity of the structure. The stepped shape of the stepped plate member 5 can improve the stability of the structure while reducing the occupied space. The second side form is vertically disposed on the first side form to form another side of the formwork. It is detachably installed on the steel formwork table 1 and includes an "L"-shaped bottom plate 8 and a second vertical plate 7. The "L"-shaped bottom plate 8 provides a connection interface with the steel formwork table 1 and ensures the stability of the second side form. The second vertical plate 7 is perpendicular to the "L"-shaped bottom plate 8, and an opening for passing through the steel bars of the steel bar framework 3 is provided thereon to realize the fixation of the steel bar framework 3. The assembled formwork for the precast concrete bridge deck of the present application realizes the rapid and convenient disassembly and assembly of the formwork through the fixing method of the side formwork group and the steel bar framework 3, significantly improving the construction efficiency. At the same time, the formwork system also has high stability and load-bearing capacity, ensuring the construction quality of the precast bridge deck.

[0036] In some alternative embodiments, such as Figures 1 to 4As shown, the first side formwork and the second side formwork are fixed by G-clamps. The use of G-clamps to fix between the first side formwork and the second side formwork can enhance the stability and firmness of the formwork system. This design method can ensure that during the concrete pouring process, the side formwork group can maintain a stable structural form, effectively preventing formwork deformation or displacement, thus guaranteeing the construction quality of the precast bridge deck. In actual use, the first side formwork and the second side formwork are reinforced through the connecting side plate 14 to ensure the stability of the structural connection.

[0037] As a commonly used connecting piece, the G-clamp has the advantages of simple structure, easy operation, and firm connection. In the embodiment of the present application, by reasonably arranging the position and quantity of the G-clamps, a tight connection between the first side formwork and the second side formwork can be achieved, ensuring the stability and safety of the formwork system during the construction process. At the same time, the easy disassembly of the G-clamps also facilitates the subsequent disassembly, assembly, and reuse of the formwork, improving the construction efficiency.

[0038] In some alternative embodiments, as Figure 1 , Figure 5 and Figure 6 shown, it further includes multiple groups of outer edge shear groove formwork 16 and core formwork 17. Both the outer edge shear groove formwork 16 and the core formwork 17 are provided with notches for clamping and fixing with the steel bar framework 3. To further enhance the structural performance and construction convenience of the precast bridge deck, the assembled formwork in the embodiment of the present application further adds multiple groups of outer edge shear groove formwork 16 and core formwork 17. The designs of these two types of formwork fully consider the effective connection and fixation with the steel bar framework 3. Specifically, notches are provided on both the outer edge shear groove formwork 16 and the core formwork 17, and these notches match the corresponding parts on the steel bar framework 3, enabling precise clamping and fixing. Such a design not only ensures the stable position of the steel bar framework 3 within the formwork but also effectively transmits the shear force, enhancing the overall structural performance of the precast bridge deck. During the manufacturing process of the core formwork 17, holes for shear studs need to be reserved on the formwork according to the design requirements. The size and shape of the holes should match the shear studs to ensure that the shear studs can be accurately and firmly installed on the formwork.

[0039] During the actual construction process, the design of these notches also makes the installation and fixation of the steel bar framework 3 more convenient and fast, further improving the construction efficiency. At the same time, the addition of the outer edge shear groove formwork 16 and the core formwork 17 also provides more diverse construction options for the precast bridge deck, meeting different engineering requirements.

[0040] In some alternative embodiments, as Figures 1 to 4As shown, multiple steel profiles 2 for support are arranged at intervals at the bottom of the steel formwork table 1. At the bottom of the steel formwork table 1, multiple steel profiles 2 are arranged at intervals as supports. Such an arrangement not only enhances the overall stability and load-bearing capacity of the steel formwork table 1, but also effectively prevents the formwork from deforming or displacing during concrete pouring, thereby ensuring the construction quality and precision of the precast bridge deck.

[0041] In some alternative embodiments, the first bottom plate 6 is fixed to the steel formwork table 1 by a magnetic fixture 9. Fixing with the magnetic fixture 9 enables quick and convenient connection between the first bottom plate 6 and the steel formwork table 1. This connection method not only simplifies the disassembly and assembly process of the formwork, improves the construction efficiency, but also ensures the stable position of the first bottom plate 6 during concrete pouring, preventing the formwork from moving or deforming.

[0042] In some alternative embodiments, as Figures 1 to 4 shown, the "L"-shaped bottom plate 8 is fixed to the steel formwork table 1 by a magnetic fixture 9. Similarly, the magnetic fixture 9 is used to form the connection between the "L"-shaped bottom plate 8 and the steel formwork table 1. Such a design makes the installation and disassembly of the second side form more convenient and fast, further improving the construction efficiency. At the same time, the strong magnetic force of the magnetic fixture 9 also ensures the stable position of the "L"-shaped bottom plate 8 during concrete pouring.

[0043] In some alternative embodiments, the stepped plate member 5 and the first bottom plate 6 are connected and fixed by a bolt plate 10. This connection method not only ensures the stable position of the stepped plate member 5, but also effectively prevents it from loosening or falling off during concrete pouring, thus guaranteeing the construction quality of the precast bridge deck.

[0044] In some alternative embodiments, as Figure 1 shown, bolt grooves 11 for matching the bolt plate 10 are provided on both the stepped plate member 5 and the first bottom plate 6. Bolt grooves 11 for matching the bolt plate 10 are provided on the stepped plate member 5 and the first bottom plate 6. Such a design enables the bolt plate 10 to be accurately installed in the predetermined position and tightly connected to the stepped plate member 5 and the first bottom plate 6, thus achieving a more firm and stable formwork structure. In use, bolts 12 for fixing are provided on the bolt plate 10.

[0045] In some alternative embodiments, as Figure 1 shown, a baffle 13 for preventing cement from overflowing is provided on one side of the first bottom plate 6. In order to prevent cement from overflowing during concrete pouring, a baffle 13 is provided on one side of the first bottom plate 6. The height and width of the baffle 13 can be adapted to the construction process. To ensure that it can effectively block the overflow of cement and keep the inside of the formwork clean and orderly.

[0046] In some alternative embodiments, stiffening plates 15 are vertically arranged along the length direction of the "L"-shaped bottom plate 8 and the second vertical plate 7. To further enhance the rigidity and stability of the "L"-shaped bottom plate 8 and the second vertical plate 7, stiffening plates 15 are vertically arranged along their length directions. The material and thickness of the stiffening plates 15 can be set according to actual requirements to ensure that they can withstand the pressure and vibration generated during concrete pouring and maintain the shape and position of the formwork stable and unchanged. Such a design not only improves the load-bearing capacity of the formwork but also effectively extends its service life.

[0047] During the actual construction process, this assembled formwork can be utilized for construction through the following steps:

[0048] 1. Use a hoisting device to hoist the steel formwork table 1 above the profiled steel 2 according to the designed position. Immediately after that, clean the surface of the formwork table, apply a release agent on the surface of the formwork table, and then hoist the pre-bundled steel bar framework 3 onto the steel formwork table;

[0049] 2. Install the external side formwork box body according to the position of the steel bar framework 3. Connect the first bottom plate 6 of the first side form and the "L"-shaped bottom plate 8 of the second side form to the steel formwork table 1 through the magnetic absorber 9. Then, splice the stepped plate member 5, the first vertical plate 4, and the second vertical plate 7 to the first bottom plate 6 and the "L"-shaped bottom plate 8 respectively to form a complete first side form and second side form, and clamp and fix them with a G-type clamp. At this time, this assembled formwork is a semi-closed box structure with an upper opening;

[0050] 3. Manually install the outer edge shear groove formwork 16 with a notch and the core formwork 17 with a reserved shear stud along the vertical direction onto the steel bar framework 3, and achieve precise clamping through the notch and the tied steel bar framework 33. For the tiny holes formed by the reserved steel bar channels, insert elastic foam boards to prevent slurry leakage. Apply a release agent on the surface of this assembled formwork to ensure the good appearance of the concrete after demoulding, that is, complete the installation of the assembled formwork for the precast concrete bridge deck;

[0051] 4. After the concrete is mixed and transported to the formwork construction area, use this assembled formwork as the basis for the construction of the precast concrete bridge deck.

[0052] 5. After the concrete is cured to a certain age, remove the assembled formwork, that is, complete the construction of the precast concrete bridge deck.

[0053] In step 4, the steps of pouring the cement-based material into the forming mold are as follows:

[0054] When pouring the concrete, a truck-mounted concrete pump is used to place the concrete in two layers. During the placement of the first layer, internal vibrators are used simultaneously. The vibration frequency can be 200 Hz, and the vibration time can be 10 - 15 s. After the placement of the first layer is completed, the surface layer is placed, and then the concrete is vibrated by external vibrators for 30 s at a vibration frequency of 150 Hz. After the placement and vibration process is completed, the surface is leveled, and at the same time, the concrete surface is covered with a film. Finally, all construction processes are completed.

[0055] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0056] It should be noted that in the present application, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0057] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An assembled formwork for a precast concrete bridge deck, characterized in that Including: Steel formwork table (1); Steel bar framework (3), the steel bar framework (3) is arranged on the steel formwork table (1); Side formwork group, the side formwork group is used to fix the steel bar framework (3) to the steel formwork table (1), and it includes two groups of oppositely arranged first side forms and two groups of oppositely arranged second side forms; The first side form is detachably arranged on the steel formwork table (1), and includes a first bottom plate (6), a first vertical plate (4) arranged on the first bottom plate (6), and a stepped plate member (5) arranged on the outer side of the first vertical plate (4). The first vertical plate (4) and the side wall of the stepped plate member (5) are provided with clamping grooves for clamping the steel bar framework (3); The second side form is vertically arranged on the first side form and is detachably arranged on the steel formwork table (1), and includes an "L"-shaped bottom plate (8) and a second vertical plate (7) arranged on the "L"-shaped bottom plate (8). An opening for passing through the steel bar framework (3) is arranged on the second vertical plate (7).

2. The assembled formwork for a precast concrete bridge deck according to claim 1, characterized in that: It further includes multiple groups of outer edge shear groove formworks (16) and core formwork templates (17). Both the outer edge shear groove formworks (16) and the core formwork templates (17) are provided with notches for clamping and fixing with the steel bar framework (3).

3. The assembled formwork for a precast concrete bridge deck according to claim 1, characterized in that: The first side form and the second side form are fixed by G-type clamps.

4. The assembled formwork for a precast concrete bridge deck according to claim 1, characterized in that: Multiple steel profiles (2) for support are spacedly arranged at the bottom of the steel formwork table (1).

5. The assembled formwork for a precast concrete bridge deck according to claim 1, characterized in that: The first bottom plate (6) is fixed to the steel formwork table (1) by a magnetic absorber (9).

6. The assembled formwork for a precast concrete bridge deck according to claim 1, characterized in that: The "L"-shaped bottom plate (8) is fixed to the steel formwork table (1) by a magnetic absorber (9).

7. The assembled formwork for a precast concrete bridge deck according to claim 1, characterized in that: The stepped plate member (5) and the first bottom plate (6) are connected and fixed by a bolt plate (10).

8. The assembled formwork for a precast concrete bridge deck according to claim 7, characterized in that: Both the stepped plate member (5) and the first bottom plate (6) are provided with bolt grooves (11) for matching the bolt plate (10).

9. The assembled formwork for a precast concrete bridge deck according to claim 1, characterized in that: A baffle (13) for preventing cement overflow is arranged on one side of the first bottom plate (6).

10. The assembled formwork for a precast concrete bridge deck according to claim 1, characterized in that: Stiffening plates (15) are vertically arranged along the length direction on both the "L"-shaped bottom plate (8) and the second vertical plate (7).

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