A construction platform for installing air-ductless steel longitudinal beams in cable-stayed bridges

Abstract

This utility model discloses a construction platform for installing air-ductless steel longitudinal beams in cable-stayed bridges, relating to the field of cable-stayed bridge steel beam installation technology. It includes a construction platform with a side support fixedly connected to one side of its top. Telescopic horizontal bars are installed at the four corners of the top of the platform, with pulleys installed at the ends of the horizontal bars. Steel longitudinal beams are installed on the side supports, and side protective components are installed around the perimeter of the platform. This utility model solves the problems of complex construction and difficult movement of traditional platforms by integrating the construction platform and telescopic horizontal bars. It is convenient to install and allows for flexible position adjustment, significantly accelerating the installation progress of the steel longitudinal beams. Furthermore, the side protective components reduce the risk of worker falls. The fixed connection between the side supports and the steel longitudinal beams ensures precise alignment between the platform and the main beam of the cable-stayed bridge. It adapts to the special structure of air-ductless steel longitudinal beams, and the telescopic horizontal bars can smoothly pass through the transverse diaphragms of the steel longitudinal beams.

Description

Technical Field

[0001] This utility model relates to the field of installation and construction technology of steel beams for cable-stayed bridges, and in particular to a construction platform for installing air-ventless steel longitudinal beams for cable-stayed bridges. Background Technology

[0002] In the construction of steel-concrete composite beams for cable-stayed bridges, the installation of air-ductless steel longitudinal beams is a core step. However, traditional construction methods face multiple challenges: the construction platform is cumbersome to set up and lacks stability; the lack of flexible moving devices makes position adjustment difficult and construction efficiency low; the working space is cramped when connecting steel longitudinal beams and tightening high bolts, resulting in significant safety risks; existing platforms are difficult to adapt to the special structure of air-ductless steel longitudinal beams, and there are structural obstacles when passing through the transverse diaphragms of the steel longitudinal beams.

[0003] Therefore, this utility model provides a construction platform for installing wind-ventless steel longitudinal beams of cable-stayed bridges to solve the problems existing in the prior art. Utility Model Content

[0004] To achieve the above objectives, the present invention provides the following solution: The present invention provides a construction platform for installing wind-nozzle-type steel longitudinal beams of cable-stayed bridges, including a construction platform, a side support fixedly connected to one side of the top of the construction platform, telescopic horizontal bars respectively provided at the four corners of the top of the construction platform, pulleys installed at the ends of the telescopic horizontal bars, steel longitudinal beams installed on the side support, and side protection components installed around the construction platform.

[0005] Optionally, the construction platform includes a support frame, with several load-bearing beams spaced apart at the bottom of the support frame. The two ends of the load-bearing beams are fixedly connected to the support frame, and a load-bearing plate is provided between two adjacent load-bearing beams. The load-bearing beams and the load-bearing plates are fixedly connected.

[0006] Optionally, the support frame is formed by fixing several steel sections together, the side support is fixedly connected to the side wall of the support frame, and the telescopic horizontal bar is fixedly connected to the top of the support frame.

[0007] Optionally, the telescopic horizontal bar is composed of an outer square steel shell and an inner square steel core, with one end of the inner square steel core extending into the outer square steel shell, and the inner square steel core sliding along the inner wall of the outer square steel shell.

[0008] Optionally, the side support includes diagonal bracing, on which several columns are equally spaced and vertically arranged. The diagonal bracing is fixedly connected to the columns to enhance the structural strength and stability of the construction platform.

[0009] Optionally, the column material is square steel, and the diagonal brace material is angle steel.

[0010] Optionally, a step is provided on one side of the side support for workers to pass through, and the step is fixedly connected to the side support.

[0011] Optionally, the side protection component is fixedly connected to the support frame, and the side protection component is used to prevent construction workers from accidentally falling.

[0012] The present invention discloses the following technical effects:

[0013] 1. Significantly improved construction efficiency and convenience: By integrating components such as construction platforms and telescopic horizontal bars, the problems of complex construction and difficult movement of traditional platforms are solved. Installation is convenient and the position can be flexibly adjusted, which greatly speeds up the installation progress of steel longitudinal beams.

[0014] 2. Comprehensive optimization of safety performance and structural adaptability: Side protection components reduce the risk of falls; side supports and pulleys are compatible with wind-nozzle-type steel longitudinal beam structures; telescopic horizontal bars can pass smoothly through the steel longitudinal beam diaphragms; the construction platform expands the operating space; the columns, diagonal braces and other structures of the side supports enhance stability; and the steps ensure the safety of personnel passage. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the horizontal structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of this utility model when installed longitudinally;

[0019] In the diagram: 1. Construction platform; 2. Side protection components; 3. Telescopic horizontal bar; 4. Pulley; 5. Side support; 6. Steel longitudinal beam; 11. Load-bearing beam; 12. Load-bearing plate; 13. Support frame; 31. Outer square steel; 32. Inner core square steel; 51. Steps; 52. Column; 53. Diagonal brace. Detailed Implementation

[0020] 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.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Reference Figures 1-3 As shown, this embodiment provides a construction platform for installing wind-free steel longitudinal beams of cable-stayed bridges, including a construction platform 1. A side support 5 is fixedly connected to one side of the top of the construction platform 1. Telescopic horizontal bars 3 are respectively set at the four corners of the top of the construction platform 1. Pulleys 4 are installed at the ends of the telescopic horizontal bars 3. Steel longitudinal beams 6 are installed on the side support 5. Side protection components 2 are installed around the construction platform 1.

[0023] This utility model integrates components such as a construction platform 1 and a telescopic horizontal bar 3. The telescopic horizontal bar 3 facilitates the passage of the transverse diaphragm of the steel longitudinal beam 6. The pulley 4 can act as a force transmission component to reduce friction during the movement of the steel longitudinal beam 6, thus solving the problems of complex construction and difficult movement of traditional platforms. It is easy to install and flexible in position adjustment, which greatly speeds up the installation progress of the steel longitudinal beam 6. In addition, the side protection component 2 can reduce the risk of workers falling. The fixed connection between the side support 5 and the steel longitudinal beam 6 ensures the precise docking of the platform with the main beam of the cable-stayed bridge. It is adapted to the special structure of the wind-nozzle type steel longitudinal beam 6, and the telescopic horizontal bar 3 can smoothly pass through the transverse diaphragm of the steel longitudinal beam 6.

[0024] Further refining the design, the construction platform 1 includes a support frame 13. Several load-bearing beams 11 are spaced apart at the bottom of the support frame 13. Both ends of each load-bearing beam 11 are fixedly connected to the support frame 13. A load-bearing plate 12 is placed between adjacent load-bearing beams 11, and the load-bearing beams 11 and load-bearing plates 12 are fixedly connected. The spaced arrangement of the load-bearing beams 11 and their fixed connection to the load-bearing plates 12 forms a distributed load-bearing structure, improving the overall bending stiffness of the platform and reducing localized deformation.

[0025] Further refining the design, the support frame 13 is formed by several steel sections fixedly connected together. The side supports 5 are fixedly connected to the side walls of the support frame 13, and the telescopic horizontal bar 3 is fixedly connected to the top of the support frame 13. The support frame 13 is the force transmission component of the construction platform 1. When the construction platform 1 is in use, the load is transmitted to the load-bearing beam 11 through the load-bearing plate 12, and then to the support frame 13 through the load-bearing beam 11. The support frame 13, as a force transmission component, transmits the force to the side supports 5 and the telescopic horizontal bar 3.

[0026] Further refining the design, the telescopic horizontal bar 3 consists of an outer square steel shell 31 and an inner square steel core 32. One end of the inner square steel core 32 extends into the outer square steel shell 31, and the inner square steel core 32 can slide along the inner wall of the outer square steel shell 31. As a force transmission and movement component, the inner square steel core 32 is retracted or extended sequentially for adjustment when passing the transverse diaphragm of the steel longitudinal beam 6, adapting to the fine-tuning requirements during the installation of the steel longitudinal beam 6. The square steel cross-section provides high shear resistance, ensuring that the horizontal bar does not fail under lateral loads. A limit switch (not shown in the figure) is provided between the inner square steel core 32 and the outer square steel shell 31 to prevent slippage.

[0027] Further refining the design, the side support 5 includes diagonal braces 53, with several columns 52 evenly spaced on the diagonal braces 53. The columns 52 are vertically positioned, and the diagonal braces 53 are fixedly connected to the columns 52 to enhance the structural strength and stability of the construction platform 1. The diagonal braces 53 and the columns 52 form a triangular stability system, effectively resisting the lateral overturning moment of the construction platform 1 caused by eccentric loads. At the same time, the evenly spaced columns 52 convert concentrated loads into uniformly distributed loads, reducing the risk of local stress concentration.

[0028] Further refining the design, the material for column 52 is square steel, and the material for diagonal brace 53 is angle steel. Square steel column 52 has excellent compressive strength and low cost, while angle steel diagonal brace 53 has high torsional stiffness. The combination of the two ensures safety while controlling material costs.

[0029] The design is further refined by adding a staircase 51 on one side of the side support 5, allowing workers to move up and down. The staircase 51 is fixedly connected to the side support 5. The fixed staircase 51 replaces the temporary ladder, reducing the time workers spend going up and down and improving the continuity of construction.

[0030] Furthermore, a safety back cage is fixedly installed on step 51 to ensure the safety of personnel passing through.

[0031] The design is further refined, with the side protection component 2 fixedly connected to the supporting frame 13. The side protection component 2 is used to prevent construction workers from accidentally falling. The fixed connection between the side protection component 2 and the frame forms a rigid protective barrier to prevent tools or personnel from falling.

[0032] Beneficial Effects: The construction platform bears the load through the load-bearing beams 11 and load-bearing plates 12, and the force is transmitted to the side supports 5 and telescopic horizontal bars 3 via the support frame 13. Side protection components 2 are provided on the side walls to prevent personnel from falling. The telescopic horizontal bars 3 consist of an outer square steel shell 31 and a retractable inner square steel core 32, which assists the construction platform 1 in smoothly passing through the transverse diaphragms of the steel longitudinal beams 6. Steps 51 and safety back cages are provided on the side supports 5 for easy access and safety. The upper construction platform provides working space for construction personnel, and most components are assembled by welding. This construction platform 1 is easy to install and fix, flexible to move, and adopts a fully enclosed design, significantly improving the safety, convenience, and efficiency of operations such as connecting steel longitudinal beams 6 and tightening high-strength bolts, effectively promoting the installation progress of steel longitudinal beams 6 and ensuring installation quality.

[0033] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A construction platform for installing air-ductless steel longitudinal beams in cable-stayed bridges, characterized in that: The construction platform (1) is provided with a side support (5) fixedly connected to one side of the top of the construction platform (1), and telescopic horizontal bars (3) are respectively provided at the four corners of the top of the construction platform (1). The ends of the telescopic horizontal bars (3) are equipped with pulleys (4), and steel longitudinal beams (6) are installed on the side support (5). Side protection components (2) are respectively installed around the construction platform (1).

2. The construction platform for installing the wind-ventless steel longitudinal beam of a cable-stayed bridge according to claim 1, characterized in that: The construction platform (1) includes a support frame (13), and a number of load-bearing beams (11) are spaced apart at the bottom of the support frame (13). The two ends of the load-bearing beams (11) are fixedly connected to the support frame (13), and a load-bearing plate (12) is provided between two adjacent load-bearing beams (11). The load-bearing beams (11) and the load-bearing plates (12) are fixedly connected.

3. The construction platform for installing the wind-ventless steel longitudinal beam of a cable-stayed bridge according to claim 2, characterized in that: The support frame (13) is formed by several steel sections fixedly connected together. The side support (5) is fixedly connected to the side wall of the support frame (13), and the telescopic horizontal bar (3) is fixedly connected to the top of the support frame (13).

4. The construction platform for installing the wind-ventless steel longitudinal beam of a cable-stayed bridge according to claim 1, characterized in that: The telescopic horizontal bar (3) is composed of an outer square steel (31) and an inner square steel (32). One end of the inner square steel (32) extends into the outer square steel (31), and the inner square steel (32) can slide along the inner wall of the outer square steel (31).

5. The construction platform for installing the wind-ventless steel longitudinal beam of a cable-stayed bridge according to claim 1, characterized in that: The side support (5) includes a diagonal brace (53), on which several columns (52) are equally spaced. The columns (52) are vertically arranged. The diagonal brace (53) is fixedly connected to several columns (52) to enhance the structural strength and stability of the construction platform (1).

6. The construction platform for installing the wind-ventless steel longitudinal beam of a cable-stayed bridge according to claim 5, characterized in that: The column (52) is made of square steel, and the diagonal brace (53) is made of angle steel.

7. The construction platform for installing the wind-ventless steel longitudinal beam of a cable-stayed bridge according to claim 5, characterized in that: A step (51) is provided on one side of the side support (5) for workers to pass up and down. The step (51) is fixedly connected to the side support (5).

8. The construction platform for installing the wind-ventless steel longitudinal beam of a cable-stayed bridge according to claim 2, characterized in that: The side protection component (2) is fixedly connected to the support frame (13), and the side protection component (2) is used to prevent construction workers from falling accidentally.

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