Front fulcrum guy cable hanging basket template system

Abstract

The utility model discloses a front fulcrum guy cable hanging basket template system which comprises a main longitudinal beam, a bottom die, an inner side die, a bottom die lead screw and a side die lead screw, wherein the bottom die is connected with the main longitudinal beam; the inner side die is connected with the main longitudinal beam; the bottom die lead screw is connected with the bottom die; according to the front fulcrum guy cable hanging basket formwork system, the main longitudinal beam, the bottom formwork, the inner side formwork and the corresponding lead screw connecting mechanism are adopted, so that the formwork system can be more stable and easy to adjust, the number of times of disassembly and assembly of formworks in the construction process is effectively reduced, the overall construction efficiency is improved, and by reasonably arranging the bottom formwork lead screws, the side formwork lead screws and the side formwork trusses, the construction efficiency is improved. The adjustability of the formwork system is enhanced, repeated cutting adjustment caused by unreasonable formwork design is avoided, errors in the construction process are reduced, and the appearance quality of concrete forming is improved.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, specifically to a front-support cable-stayed formwork system. Background Technology

[0002] The front-support cable-stayed formwork is a key piece of equipment in the cantilever construction of the main girder of a cable-stayed bridge. It utilizes the stay cables of the girder segment to be poured as the front support point of the formwork to provide bearing force, while simultaneously anchoring the rear end of the formwork to the already poured girder segment. This allows the stay cables and the already poured girder segment to jointly bear the weight of the concrete in the segment to be poured. Compared to traditional formwork construction methods, this technology transforms the stress distribution of the cantilever beam from cantilever stress to simply supported beam stress, improving the structure's load-bearing capacity and significantly increasing the cantilever length and load-bearing capacity of the segments, thereby accelerating the construction progress.

[0003] In the existing construction process of cable-stayed formwork at the front support point, the formwork system mainly consists of bottom formwork, outer formwork, inner formwork, flange plates, and end formwork. The bottom formwork, outer formwork, inner formwork, and flange plates typically use standardized steel formwork, while the end formwork uses bamboo plywood. Current construction methods usually utilize bridge cranes to hoist and assemble the formwork piece by piece into a complete formwork assembly. However, after construction, the formwork still needs to be hoisted and unloaded piece by piece, which not only increases construction steps but also leads to low work efficiency and affects construction progress. Furthermore, pre-embedded steel guide pipes for the main beam stay cables are distributed in the beam ribs of the standard main beam segments. These guide pipes penetrate the bottom formwork and form anchor blocks, sharing the load with the main beam rib concrete. Simultaneously, each standard main beam segment is designed with longitudinal prestressed steel strands, whose prestressing tensioning ends are usually located on the inner side of the beam rib concrete, i.e., the tensioning groove penetrates the inner formwork. Therefore, the design requirements for the formwork are relatively high. However, under current technological conditions, due to imperfect template design, multiple template cuts are often required during construction, which not only increases construction costs but also affects the appearance quality of concrete structures. Utility Model Content

[0004] The purpose of this utility model is to provide a front-support cable-stayed basket formwork system to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a front-support cable-stayed basket formwork system, comprising:

[0006] Main longitudinal beam;

[0007] The bottom formwork is connected to the main longitudinal beam;

[0008] The inner mold is connected to the main longitudinal beam;

[0009] Bottom mold lead screw, which is connected to the bottom mold;

[0010] Side mold screw, which is connected to the inner mold.

[0011] Preferably, the output end of the bottom mold lead screw is fixedly connected to the bottom mold.

[0012] Preferably, the output end of the side mold screw is fixedly connected to the inner mold.

[0013] Preferably, the bottom mold is also connected to an outer mold, and the bottom ends of the bottom mold and the outer mold are provided with side mold trusses.

[0014] Preferably, a rack is provided at the top of the side formwork truss, and a handle is connected to one end of the rack.

[0015] Preferably, the end of the rack away from the handle is fixed with an outer mold and a bottom mold.

[0016] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0017] This front-support cable-stayed formwork system, through the use of main longitudinal beams, bottom formwork, inner side formwork, and corresponding screw connection mechanisms, makes the formwork system more stable and easier to adjust, effectively reducing the number of formwork assembly and disassembly operations during construction and improving overall construction efficiency. The rational arrangement of bottom formwork screws, side formwork screws, and side formwork trusses enhances the adjustability of the formwork system, avoiding multiple cutting and adjustments due to unreasonable formwork design, reducing errors during construction, and improving the appearance quality of the concrete. The use of a side formwork truss structure, with trusses set at the bottom ends of the bottom and outer side formworks, improves the overall stability of the formwork system. Simultaneously, the installation of racks and handles at the top of the side formwork trusses makes formwork adjustment more convenient, further improving construction accuracy and safety. Optimizing the formwork connection method makes assembly and disassembly more efficient, reducing on-site hoisting operation time, increasing the reusability of formwork, and lowering construction costs. This invention has significant advantages in improving construction efficiency, optimizing formwork stress distribution, improving concrete appearance quality, enhancing formwork system stability, and facilitating installation and disassembly, effectively improving the overall quality and construction progress of cantilever construction of cable-stayed bridge main beams. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the plan layout of the hanging basket template system of this utility model;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a side view of the hanging basket template system of this utility model;

[0021] Figure 4This is a schematic diagram of the block-shaped template for the cable-stayed basket of this utility model;

[0022] Figure 5 This is a schematic diagram of the truss structure of the cable-stayed formwork system of this utility model.

[0023] In the diagram: 1. Bottom mold lead screw; 2. Side mold truss; 3. Side mold lead screw; 4. Rack; 5. Bottom mold; 6. Outer mold; 7. Inner mold; 8. Handle; 9. Main longitudinal beam. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-5 As shown, a front-support cable-stayed formwork system includes: a main longitudinal beam 9; a bottom formwork 5 connected to the main longitudinal beam 9; an inner formwork 7 connected to the main longitudinal beam 9; a bottom formwork screw 1 connected to the bottom formwork 5; and a side formwork screw 3 connected to the inner formwork 7. The main longitudinal beam 9 serves as the load-bearing structure of the formwork system, providing support and connection for the overall formwork. The bottom formwork 5, fixed to the main longitudinal beam 9, shapes the concrete base slab, while the inner formwork 7, fixed to the main longitudinal beam 9, supports and constrains the concrete sidewalls. The bottom formwork screw 1, connected to the bottom formwork 5, allows adjustment of the bottom formwork 5's height by rotating the bottom formwork screw 1 to adapt to the construction requirements of different bridge structures. The side formwork screw 3 is used to adjust the position of the inner formwork 7 to ensure the fit and verticality of the sidewall formwork. The entire system employs a front-support cable-stayed fixing method, enabling the formwork to be stably suspended in the construction position, avoiding the cumbersome construction of traditional support scaffolding and improving construction safety and efficiency. Through the precise adjustment functions of the bottom formwork screw 1 and side formwork screw 3, the construction accuracy of the formwork system can be effectively improved, ensuring that the dimensions and quality of the concrete structure meet design requirements. Secondly, the front-support cable-stayed suspension fixing method makes formwork installation and dismantling more convenient, reducing construction time and labor costs, and improving construction efficiency. Furthermore, the main longitudinal beam 9 provides robust support, ensuring the stability of the entire formwork system in a suspended state, reducing the risk of formwork deformation and improving construction safety. Simultaneously, this system is suitable for various bridge and box girder constructions, especially in construction environments requiring long-distance suspended support, demonstrating greater adaptability and flexibility. Finally, compared to traditional scaffolding formwork, this system reduces the need for temporary support structures, thereby reducing material consumption and construction costs, and improving economic efficiency.

[0026] The material of the main longitudinal beam 9 can be selected according to construction needs, such as high-strength steel, aluminum alloy, or composite materials, to meet different load-bearing requirements. For example, aluminum alloy can be used to reduce the self-weight of the formwork system, while corrosion-resistant composite materials can be used in highly corrosive environments. Secondly, the adjustment mechanisms of the bottom formwork screw 1 and the side formwork screw 3 can be replaced by hydraulic cylinders or electric screws to improve adjustment accuracy and the degree of construction automation, making them suitable for large-scale mechanized construction. Thirdly, the fixing method of the front support cable can be adjusted according to the construction environment, such as using rigid supports or sliding supports, to adapt to the stress requirements of different bridge constructions. In addition, the formwork system can be supplemented with outer formwork to form a complete box girder formwork structure to meet the needs of full-section casting of box girders and improve construction efficiency. Finally, the connection method between the main longitudinal beam 9 and the bottom formwork 5 and the inner side formwork 7 can be welding, bolting, or plugging to enhance the flexibility of formwork assembly and disassembly and construction adaptability.

[0027] The output end of the bottom formwork screw 1 is fixedly connected to the bottom formwork 5. The working principle of this embodiment is that the output end of the bottom formwork screw 1 is directly fixedly connected to the bottom formwork 5, allowing the bottom formwork screw 1 to stably drive the bottom formwork 5 to rise, fall, or make fine adjustments during adjustment. By rotating the bottom formwork screw 1, the height of the bottom formwork 5 can be adjusted to meet the needs of different construction stages. For example, during concrete pouring, the horizontal height of the bottom formwork 5 can be precisely adjusted to ensure the dimensional accuracy of the structure and the uniformity of the concrete. The fixed connection ensures that the bottom formwork 5 will not shift or loosen during adjustment, improving the overall stability and reliability of the formwork system. After the output end of the bottom formwork screw 1 is fixedly connected to the bottom formwork 5, the adjustment process of the bottom formwork 5 can be made more precise and stable, avoiding construction errors caused by loose connections or excessive gaps. In addition, this fixed connection enhances the overall stability of the system, preventing unnecessary displacement or sinking of the bottom formwork when bearing the weight of concrete, thus improving construction safety. At the same time, this structure simplifies the formwork adjustment process, allowing construction personnel to adjust the position of the bottom formwork 5 more quickly, improving construction efficiency. The output end of the bottom formwork screw 1 can be fixedly connected to the bottom formwork 5 using threaded connection, welding, or flange connection to meet different construction needs. For example, threaded or flange connections can be used when disassembly and maintenance are required, while welding can be used in long-term fixed formwork structures to enhance connection strength. Secondly, the bottom formwork screw 1 can be replaced with an electric screw or hydraulic lifting mechanism to achieve more precise and automated adjustments, improving the level of intelligent construction. In addition, to enhance structural stability, a reinforcing plate or limiting mechanism can be added at the connection between the bottom formwork screw 1 and the bottom formwork 5 to improve the impact resistance and durability of the connection.

[0028] The output end of the side mold screw 3 is fixedly connected to the inner mold 7. The working principle of this embodiment is that the output end of the side mold screw 3 is directly fixedly connected to the inner mold 7, allowing the side mold screw 3 to precisely adjust the position of the inner mold 7 to ensure that the shape and size of the concrete sidewall meet design requirements. By rotating the side mold screw 3, the inner mold 7 can be pushed inwards or outwards, thereby applying appropriate constraint force to the formwork during concrete pouring and forming to prevent deformation or displacement of the side mold under pressure. Furthermore, the fixed connection ensures uniform force transmission when adjusting the inner mold 7, avoiding misalignment of the formwork due to loose connections and improving the overall rigidity and stability of the formwork system. The beneficial effects of this embodiment are that the fixed connection between the output end of the side mold screw 3 and the inner mold 7 ensures the adjustment accuracy of the inner mold 7, improving the quality and stability of the concrete sidewall forming. The fixed connection reduces errors caused by side mold movement or uneven force, ensuring that the side mold remains in the set position during construction and avoiding defects such as uneven thickness or surface unevenness in the concrete sidewall. Furthermore, this design improves the operability of construction, allowing construction personnel to more easily adjust the position of the inner mold 7, reducing construction errors, improving construction efficiency, and enhancing the overall safety and durability of the formwork system. The output end of the side mold screw 3 can be fixedly connected to the inner mold 7 using threaded connections, welding, flange connections, or quick-disassembly structures to meet different construction needs. For example, in cases requiring frequent adjustments, flange or threaded connections can be used for easy installation and disassembly; while in long-term fixed construction environments, welding can be used to enhance the stability of the connection. Secondly, the side mold screw 3 can be replaced with a hydraulic cylinder or electric push rod to achieve automated adjustment, improving construction efficiency and the accuracy of formwork adjustment. In addition, a reinforcing plate or limiting device can be added at the connection between the side mold screw 3 and the inner mold 7 to improve the stability and impact resistance of the connection, preventing the side mold from shifting or deforming during concrete pouring.

[0029] The bottom formwork 5 is also connected to the outer formwork 6, and side formwork trusses 2 are provided at the bottom ends of both the bottom formwork 5 and the outer formwork 6. The working principle of this embodiment is that, based on the original bottom formwork 5 and inner formwork 7, an outer formwork 6 is added to further improve the formwork system, enabling it to simultaneously support the outer surface of the concrete structure. The outer formwork 6, through its connection with the bottom formwork 5, achieves overall support for the entire formwork system and ensures the forming accuracy of the concrete sidewalls. Furthermore, side formwork trusses 2 are provided at the bottom ends of both the bottom formwork 5 and the outer formwork 6. As an important supporting structure of the formwork system, the side formwork trusses 2 can improve the rigidity of the side formwork and distribute the concrete pressure borne by the side formwork, preventing deformation or misalignment due to uneven stress. Simultaneously, the side formwork trusses 2 contribute to the overall stability of the formwork, allowing the formwork system to better adapt to the construction needs of long-span, large-section concrete structures. The beneficial effect of this embodiment is that the addition of the outer formwork 6 allows the formwork system to simultaneously support the inner and outer sides of the concrete structure, improving the integrity of the formwork and construction efficiency, and making it suitable for the construction of various bridge structures such as box girders and T-beams. The addition of side formwork truss 2 enhances the structural strength of the side formwork, improves its load-bearing capacity and stability, and effectively prevents deformation due to lateral pressure during concrete pouring. Furthermore, this design reduces reliance on additional support structures, thereby lowering construction costs while improving the durability and reusability of the formwork system.

[0030] The material of the outer formwork 6 can be selected from steel, aluminum alloy, or composite material formwork according to construction needs, to adapt to different construction environments and load-bearing requirements. Secondly, the connection between the outer formwork 6 and the bottom formwork 5 can be achieved through bolted connections, plug-in structures, or welding to improve the ease of installation and disassembly. Thirdly, the structural form of the side formwork truss 2 can be adjusted according to specific construction needs; for example, a single-layer truss, double-layer truss, or lattice truss can be used to adapt to different construction load conditions. Furthermore, the side formwork truss 2 can be replaced with rigid support rods or adjustable support devices to enhance construction flexibility and improve the adaptability and load-bearing capacity of the formwork system.

[0031] A rack 4 is provided at the top of the side formwork truss 2, and a handle 8 is connected to one end of the rack 4. The working principle of this embodiment is that by setting a rack 4 at the top of the side formwork truss 2 and connecting it to the handle 8, precise adjustment and positioning of the side formwork truss 2 can be achieved. As part of the adjustment mechanism, the rack 4 can be fine-tuned within a certain range by rotating or moving the handle 8 to adapt to different construction needs. During construction, workers can operate the rack 4 through the handle 8 to more accurately match the position of the side formwork truss 2 with the position of the side formwork, ensuring the stability and forming quality of the formwork during concrete pouring. Furthermore, the rack 4 enables precise linear adjustment, making the adjustment of the side formwork smoother, reducing construction defects caused by formwork errors, and improving construction efficiency. The beneficial effect of this embodiment is that by adding a rack 4 to the top of the side formwork truss 2 and adjusting it using the handle 8, workers can more easily fine-tune the formwork system, improving the installation accuracy and construction quality of the formwork. The design of handle 8 simplifies the adjustment process, allowing for quick adjustment of the position of the side formwork truss 2 without the need for additional tools, thus improving construction efficiency. Furthermore, this design enhances the operational flexibility of the formwork system, enabling it to adapt to the construction of concrete structures of different specifications and sizes, while reducing errors during construction and improving the overall safety and reliability of the construction.

[0032] First, the rack 4 can be made of high-strength steel, stainless steel, or wear-resistant alloy to adapt to different construction environments and ensure its durability and stability during long-term use. Second, the handle 8 can be designed as a detachable structure or replaced with an electric drive device to achieve a more automated and precise adjustment method. Furthermore, the connection between the rack 4 and the side formwork truss 2 can be achieved through welding, bolting, or an adjustable slide structure to adapt to different installation requirements and improve construction flexibility and convenience. Finally, the rack 4 can be replaced with a lead screw mechanism, hydraulic cylinder, or electric actuator to provide more precise and automated adjustment functions, improving the intelligence level of the formwork system and construction efficiency.

[0033] The end of the rack 4 furthest from the handle 8 is fixed to the outer mold 6 and the bottom mold 5. The working principle of this embodiment is that one end of the rack 4 is adjusted via the handle 8, while the end furthest from the handle 8 is fixedly connected to the outer mold 6 and the bottom mold 5. Through this fixing method, when the construction worker rotates or pushes the handle 8, the rack 4 can drive the outer mold 6 and the bottom mold 5 to move synchronously, thereby achieving precise adjustment of the formwork system. During concrete pouring and formwork positioning, this structure ensures the synchronous adjustment of the outer mold 6 and the bottom mold 5, allowing the overall formwork system to be finely adjusted according to construction needs, improving construction accuracy and the convenience of formwork installation. Furthermore, this structure helps ensure the stability of the formwork system under stress, preventing misalignment or deformation of the formwork during pouring, and improving molding quality. The adjustment of the rack 4 achieves the linkage control of the outer mold 6 and the bottom mold 5, improving the overall coordination of the formwork system and enabling it to more accurately adapt to different construction needs. The operation of the handle 8 allows construction workers to easily adjust the formwork position without additional tools, improving construction efficiency. Furthermore, the fixed connection structure of rack 4 ensures the stability of the formwork system under stress, reduces the risk of formwork deformation or displacement during concrete pouring, and improves the quality of concrete forming. At the same time, this structure simplifies the construction adjustment process, reduces construction difficulty, and makes the formwork system more suitable for the construction needs of long-span bridges or box girders.

[0034] First, the connection between the end of the rack 4 furthest from the handle 8 and the outer mold 6 and bottom mold 5 can be achieved through bolting, welding, or plugging to improve the convenience of installation and disassembly. Second, the rack 4 can be replaced with a lead screw, hydraulic actuator, or electric drive device to achieve more precise automated adjustment, improving construction efficiency and adjustment accuracy. Furthermore, the operation of the handle 8 can be adjusted to electric control or remote adjustment to reduce manual workload and improve the level of intelligent construction. Finally, to enhance the load-bearing capacity and durability of the rack 4, its material can be high-strength steel, stainless steel, or wear-resistant alloy to adapt to different construction environments and usage requirements, improving the system's reliability and service life.

[0035] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A front-support cable-stayed basket formwork system, characterized in that, include: Main longitudinal beam (9); Bottom mold (5), which is connected to the main longitudinal beam (9); The inner mold (7) is connected to the main longitudinal beam (9); Bottom mold lead screw (1), which is connected to the bottom mold (5); Side mold screw (3), which is connected to the inner mold (7).

2. The front-support cable-stayed formwork system according to claim 1, characterized in that: The output end of the bottom mold lead screw (1) is fixedly connected to the bottom mold (5).

3. The front-support cable-stayed formwork system according to claim 1, characterized in that: The output end of the side mold lead screw (3) is fixedly connected to the inner mold (7).

4. The front-support cable-stayed formwork system according to claim 1, characterized in that: The bottom mold (5) is also connected to the outer mold (6), and the bottom ends of the bottom mold (5) and the outer mold (6) are provided with side mold trusses (2).

5. A front-support cable-stayed formwork system according to claim 4, characterized in that: The top of the side formwork truss (2) is provided with a rack (4), and one end of the rack (4) is connected to a handle (8).

6. The front-support cable-stayed formwork system according to claim 5, characterized in that: The rack (4) is fixed with an outer mold (6) and a bottom mold (5) at the end away from the handle (8).

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