Steel box girder pedestrian overpass construction device

Abstract

The invention discloses a steel box girder pedestrian overpass construction device which comprises a road surface, a stand column is fixedly installed at the top of the road surface, a steel beam is fixedly connected to the top end of the stand column, and a protective shed formed by assembling beret piece units is fixedly installed at the top of the steel beam. According to the steel box girder pedestrian overpass construction device, conversion is conducted through the bailey truss protective shed system, temporary steel box girder supports do not need to occupy urban roads, the stand columns of the bailey truss protective shed system are located in a greening area and do not occupy the urban roads, the influence of construction on urban traffic is reduced to the maximum extent, and due to the fact that the roads do not need to be occupied, the construction cost is reduced. According to the method, the approval procedure of occupying urban roads is omitted, the construction period is greatly shortened, rapid construction can be achieved, the influence time of engineering construction on the surrounding environment and resident life is shortened, and a construction area and a vehicle passing area are effectively isolated through the bailey truss protective shed system.

Description

Technical Field

[0001] The invention relates to the technical field of steel box girder pedestrian overpass construction, in particular to a steel box girder pedestrian overpass construction device. Background Art

[0002] With the expansion of urban areas and rising population density, ground transportation pressure continues to increase. Three-dimensional transportation systems have become a core strategy in modern urban planning. As a key facility for separating pedestrians and vehicles within a three-dimensional transportation network, pedestrian overpasses must balance span requirements, load-bearing capacity, and ease of construction. Steel box girders, with their advantages of high strength, light weight, short construction periods, and uniform cross-sectional shapes, have become the mainstream structural form for pedestrian overpasses across urban roads. They are particularly suitable for municipal engineering projects with spans of 20-50 meters. Traditional construction methods often require the entire steel box girder to be split into 3-5 sections (each weighing approximately 20-50 tons) due to material properties and transportation constraints. These sections are then hoisted in situ. This method requires the installation of a temporary support system beneath the steel box girder section joints. This support structure typically utilizes steel tubular columns (426-630 mm in diameter) combined with steel distribution beams (such as Type 45a and H400). The vertical load-bearing capacity of a single set of temporary supports must reach 80-150 tons. The setting of temporary support must follow the following technical logic: Load transfer path: The weight of the steel box girder segment is transferred to the column through the distribution platform on the top of the temporary support, and then distributed to the foundation through the column foundation (C30 concrete strip foundation, thickness ≥500mm) to ensure that the foundation bearing capacity is ≥150kPa.

[0003] Regarding the above technical solution, the existing temporary supports occupy urban roads for a long time, which has a significant impact on the traffic on sections with heavy traffic. The approval procedures for occupying roads are long and complicated, which seriously affects the construction period. The construction area is not isolated from the vehicle traffic area, and there are safety hazards such as falling objects from steel box girders and welding sparks.

[0004] To this end, the present invention provides a steel box girder pedestrian overpass construction device to solve the above problems. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a steel box girder pedestrian overpass construction device to solve the above problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a steel box girder pedestrian overpass construction device, including a road surface, a column fixedly installed on the top of the road surface, a steel beam fixedly connected to the top of the column, a protective shed composed of Bailey sheet units fixedly installed on the top of the steel beam, a distribution beam panel provided on the top of the protective shed, a support frame fixedly installed on the top of the distribution beam panel, and a steel box girder body provided on the top of the support frame.

[0007] Furthermore, a fixing assembly is fixedly installed on the top of the road surface, and the fixing assembly includes a limit frame and a guardrail. The limit frame is fixedly installed on the top of the road surface, and the guardrail is arranged on the inner side wall of the limit frame.

[0008] Furthermore, the fixing assembly also includes a positioning plate, which is fixedly mounted on both sides of the guardrail, and the positioning plate is slidably connected to the limiting frame.

[0009] Furthermore, the fixing assembly also includes a handle, which is fixedly installed on the top of the guardrail.

[0010] Furthermore, a lighting assembly is fixedly installed on one side of the steel beam, and the lighting assembly includes a mounting frame and a connecting plate. The mounting frame is fixedly installed on one side of the steel beam, the connecting plate is arranged on the top of the mounting frame, and a lighting lamp is fixedly installed on the bottom of the connecting plate.

[0011] Furthermore, the lighting assembly also includes a positioning rod and a positioning slot, the positioning rod is fixedly mounted on the bottom of the connecting plate, the positioning slot is opened on the top of the mounting frame, and the positioning rod and the positioning slot are clamped together.

[0012] Furthermore, the lighting assembly also includes a limiting plate, which is fixedly installed on the top of the mounting frame.

[0013] Furthermore, the lighting assembly also includes a bolt, which is connected to one side of the limiting plate through a thread, and the bolt is connected to the connecting plate through a thread.

[0014] Furthermore, a reinforcing rod is fixedly installed on the inner side wall of the column, and multiple reinforcing rods are arranged in sequence.

[0015] Furthermore, a safety guardrail is provided on the top of the distribution beam panel, and the safety guardrail is provided around the circumference of the distribution beam panel.

[0016] Beneficial effects The present invention provides a construction device for a steel box girder pedestrian overpass. Compared with the prior art, it has the following advantages: 1. The steel box girder pedestrian overpass construction device is converted through the Bailey frame protection shed system. The temporary support of the steel box girder does not need to occupy the urban road. Moreover, the columns of the Bailey frame protection shed system are located in the green area and will not occupy the urban road, thereby minimizing the impact of construction on urban traffic. Since it does not need to occupy the road, the approval procedures for occupying the urban road are eliminated, which greatly saves the construction period, enables rapid construction, and reduces the impact of the project construction on the surrounding environment and residents' lives. The construction area and the vehicle traffic area are effectively isolated by the Bailey frame protection shed system, avoiding unsafe factors during the construction process, such as falling objects, welding sparks, etc., which affect the traffic of vehicles below, and ensuring the safety of vehicles and pedestrians. The Bailey frame protection shed system can also be used as an operating platform for operations such as welding, paint spraying, and curtain wall construction, providing a larger operating space for construction, improving construction efficiency, and reducing construction difficulty.

[0017] 2. This steel box girder pedestrian overpass construction device utilizes guardrail and lighting components to prevent vehicle collisions, ensuring construction safety. The excellent lighting effect makes driving safer and facilitates lamp replacement. The limit frame and guardrail form a rigid protective structure. Once installed on the road surface, it effectively prevents vehicles from straying into the construction area, preventing equipment shaking or construction accidents caused by vehicle collisions. The guardrail is slidably connected to the limit frame via a positioning plate, allowing for flexible adjustment of the protection zone to suit the construction area. In the event of an accidental collision, the sliding motion of the guardrail cushions some of the impact, further reducing safety risks. The lighting component is secured with bolts that snap into place between the positioning rod and the positioning slot, allowing for quick removal and replacement. If a bulb is damaged or the lighting angle needs to be adjusted, simply loosen the bolts to remove or reposition the lamp, eliminating the need for complex tools or extended downtime, ensuring continuous and stable operation of the lighting system. Furthermore, the uniform lighting coverage clearly marks the boundaries of the construction area, alerting passing vehicles to avoid it, reducing safety hazards caused by poor visibility during nighttime driving and ensuring two-way safety for both construction and traffic. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the overall structure of the present invention; Figure 3 This invention Figure 3A magnified view of the structure at center A; Figure 4 This invention Figure 2 A magnified view of the structure at B in the middle.

[0020] In the figure: 1. Road surface; 2. Column; 3. Steel beam; 4. Protective shed; 5. Distribution beam panel; 6. Support frame; 7. Steel box beam body; 8. Guardrail assembly; 81. Limit frame; 82. Positioning plate; 83. Guardrail; 84. Handle; 9. Lighting assembly; 91. Mounting frame; 92. Connecting plate; 93. Lighting lamp; 94. Positioning rod; 95. Positioning groove; 96. Limiting plate; 97. Bolt; 10. Reinforcement rod; 11. Safety guardrail. DETAILED DESCRIPTION

[0021] It should be noted that in the description of the embodiments of the present application, the terms "front, rear", "left, right", "up, down", etc. indicating directions or positional relationships are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present application. The terms "install", "connect", and "connected" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrally connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] The present application will be further described in detail below through the accompanying drawings and examples.

[0023] Reference Figures 1 to 4 The embodiment of the present application provides a steel box girder pedestrian overpass construction device, including a pavement 1, a column 2 is fixedly installed on the top of the pavement 1, a steel beam 3 is fixedly connected to the top of the column 2, a protective shed 4 composed of Bailey sheet units is fixedly installed on the top of the steel beam 3, a distribution beam panel 5 is provided on the top of the protective shed 4, a support frame 6 is fixedly installed on the top of the distribution beam panel 5, a steel box girder body 7 is provided on the top of the support frame 6, a reinforcing rod 10 is fixedly installed on the inner wall of the column 2, and multiple reinforcing rods 10 are arranged in sequence, a safety guardrail 11 is provided on the top of the distribution beam panel 5, and the safety guardrail 11 is arranged around the circumference of the distribution beam panel 5.

[0024] In this embodiment, the road surface 1 serves as the foundation support. Columns 2 are fixed vertically to the road surface, and their inner reinforcement rods 10 form a triangular support structure, distributing the load transferred from the steel beams 3 to the foundation. The steel beams 3 bear the weight of the protective shed 4 and the superstructure, transferring the load to the columns 2 through welding or bolting. The distribution beam panel 5 on top of the protective shed 4 is supported by support frames 6. Ultimately, the weight of the steel box beam 7 is transferred layer by layer through various components to the road surface foundation, forming a stable mechanical transmission path.

[0025] Reference Figures 1 to 4 In one aspect of this embodiment, a fixing assembly 8 is fixedly installed on the top of the road surface 1. The fixing assembly 8 includes a limit frame 81 and a guardrail 83. The limit frame 81 is fixedly installed on the top of the road surface 1. The guardrail 83 is arranged on the inner side wall of the limit frame 81. The fixing assembly 8 also includes a positioning plate 82. The positioning plates 82 are respectively fixedly installed on both sides of the guardrail 83. The positioning plates 82 are slidably connected to the limit frame 81. The fixing assembly 8 also includes a handle 84, which is fixedly installed on the top of the guardrail 83.

[0026] In this embodiment, in the fixing assembly 8, the limit frame 81 is fixed to the road surface 1 by embedded parts or expansion bolts to form a rigid positioning frame. The positioning plates 82 on both sides of the guardrail 83 are embedded in the slide grooves of the limit frame 81 and can be slid laterally along the limit frame through the top handle 84 to achieve dynamic adjustment of the protection area. When a vehicle or material hits the guardrail, the sliding connection between the positioning plate and the limit frame can buffer part of the impact force and prevent the entire device from shaking; at the same time, the combination of the guardrail 83 and the limit frame 81 forms a physical isolation zone to prevent non-construction personnel from intruding and materials from falling, thereby ensuring on-site safety.

[0027] Reference Figures 1 to 4 In one aspect of this embodiment, a lighting assembly 9 is fixedly installed on one side of the steel beam 3. The lighting assembly 9 includes a mounting frame 91 and a connecting plate 92. The mounting frame 91 is fixedly installed on one side of the steel beam 3. The connecting plate 92 is arranged on the top of the mounting frame 91. A lighting lamp 93 is fixedly installed on the bottom of the connecting plate 92. The lighting assembly 9 also includes a positioning rod 94 and a positioning groove 95. The positioning rod 94 is fixedly installed on the bottom of the connecting plate 92. The positioning groove 95 is opened at the top of the mounting frame 91. The positioning rod 94 and the positioning groove 95 are clamped together. The lighting assembly 9 also includes a limiting plate 96. The limiting plate 96 is fixedly installed on the top of the mounting frame 91. The lighting assembly 9 also includes a bolt 97. The bolt 97 is threadedly connected to one side of the limiting plate 96, and the bolt 97 is threadedly connected to the connecting plate 92.

[0028] In this embodiment, the lighting assembly 9 includes a mounting bracket 91 welded to the outside of the steel beam 3. A positioning slot 95 is defined at its top. A positioning rod 94 at the bottom of the connecting plate 92 is inserted into the positioning slot 95 for initial positioning. A stop plate 96 restricts the connecting plate's displacement laterally and is then secured with bolts 97 threaded through the stop plate and the connecting plate. To adjust the lighting angle, bolts 97 are loosened, and the connecting plate 92 is rotated to adjust the direction of the light 93. The positioning rod 94 rotates synchronously within the positioning slot 95. Once adjusted, the bolts are tightened to secure the fixture. This provides flexible coverage for the construction area or roadway. Safety guardrails 11 are arranged around the top of the distribution beam panel 5, creating a closed, protected area to prevent construction workers from falling. Reinforcement rods 10 on the inside of the columns 2 are arranged in a cross-sectional pattern to enhance the structure's lateral resistance and prevent the device from tilting under wind loads or construction vibrations. The fixing assembly 8 works in conjunction with the distribution beam panel 5 to isolate the construction area from the roadway. The lighting assembly 9 ensures visibility during nighttime construction with its adjustable light source. These components work together to ensure both construction safety and efficiency.

[0029] Working Principle: The pavement 1 serves as the foundation support. Columns 2 are fixed vertically to the pavement, with their inner reinforcement bars 10 forming a triangular support structure that distributes the load transmitted by steel beams 3 to the foundation. The steel beams 3 bear the weight of the protective shed 4 and the superstructure, transferring the load to the columns 2 through welding or bolting. The distribution beam panel 5 on top of the protective shed 4 is supported by support frames 6. Ultimately, the weight of the steel box girder 7 is transferred layer by layer through each component to the pavement foundation, forming a stable mechanical transmission path.

[0030] In the fixing assembly 8, the limit frame 81 is fixed to the road surface 1 by embedded parts or expansion bolts to form a rigid positioning frame. The positioning plates 82 on both sides of the guardrail 83 are embedded in the slide grooves of the limit frame 81. Through the top handle 84, they can slide horizontally along the limit frame to achieve dynamic adjustment of the protection area. When a vehicle or material hits the guardrail, the sliding connection between the positioning plate and the limit frame can buffer part of the impact force and prevent the entire device from shaking; at the same time, the combination of the guardrail 83 and the limit frame 81 forms a physical isolation zone to prevent non-construction personnel from breaking in and materials from falling, thereby ensuring on-site safety.

[0031] In the lighting assembly 9, a mounting bracket 91 is welded to the outside of the steel beam 3. A positioning slot 95 is defined at its top. A positioning rod 94 at the bottom of the connecting plate 92 is inserted into the positioning slot 95 for initial positioning. A stop plate 96 restricts the connecting plate's displacement laterally and is then secured with bolts 97 threaded through the stop plate and the connecting plate. To adjust the lighting angle, bolts 97 are loosened, and the connecting plate 92 is rotated to adjust the direction of the light 93. The positioning rod 94 rotates synchronously within the positioning slot 95. Once adjusted, the bolts are tightened to secure the fixture, achieving flexible coverage of the construction area or roadway. Safety guardrails 11 are arranged around the top of the distribution beam panel 5, forming a closed protective area to prevent construction workers from falling from height. Reinforcement rods 10 on the inside of the columns 2 are arranged in a cross-sectional pattern to enhance the structure's resistance to lateral movement and prevent the device from tilting under wind loads or construction vibrations. The fixing assembly 8 works in conjunction with the distribution beam panel 5 to isolate the construction area from the roadway. The lighting assembly 9 ensures visibility during nighttime construction with its adjustable light source. These components work together to ensure both construction safety and efficiency.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A steel box girder pedestrian overpass construction device, comprising a road surface (1), characterized in that: A column (2) is fixedly installed on the top of the road surface (1), a steel beam (3) is fixedly connected to the top of the column (2), a protective shed (4) composed of Bailey sheet units is fixedly installed on the top of the steel beam (3), a distribution beam panel (5) is provided on the top of the protective shed (4), a support frame (6) is fixedly installed on the top of the distribution beam panel (5), and a steel box beam body (7) is provided on the top of the support frame (6).

2. The steel box girder pedestrian overpass construction device according to claim 1, characterized in that: A fixing assembly (8) is fixedly installed on the top of the road surface (1), and the fixing assembly (8) comprises a limiting frame (81) and a guardrail (83). The limiting frame (81) is fixedly installed on the top of the road surface (1), and the guardrail (83) is arranged on the inner side wall of the limiting frame (81).

3. The steel box girder pedestrian overpass construction device according to claim 2, characterized in that: The fixing assembly (8) further includes a positioning plate (82), wherein the positioning plate (82) is fixedly mounted on both sides of the guardrail (83), and the positioning plate (82) is slidably connected to the limiting frame (81).

4. The steel box girder pedestrian overpass construction device according to claim 3, characterized in that: The fixing assembly (8) further includes a handle (84), and the handle (84) is fixedly mounted on the top of the guardrail (83).

5. The steel box girder pedestrian overpass construction device according to claim 1, characterized in that: A lighting assembly (9) is fixedly mounted on one side of the steel beam (3), and the lighting assembly (9) comprises a mounting frame (91) and a connecting plate (92). The mounting frame (91) is fixedly mounted on one side of the steel beam (3), the connecting plate (92) is arranged on the top of the mounting frame (91), and a lighting lamp (93) is fixedly mounted on the bottom of the connecting plate (92).

6. The steel box girder pedestrian overpass construction device according to claim 5, characterized in that: The lighting assembly (9) further comprises a positioning rod (94) and a positioning groove (95), wherein the positioning rod (94) is fixedly mounted on the bottom of the connecting plate (92), and the positioning groove (95) is opened on the top of the mounting frame (91), and the positioning rod (94) and the positioning groove (95) are engaged with each other.

7. The steel box girder pedestrian overpass construction device according to claim 6, characterized in that: The lighting assembly (9) further comprises a limiting plate (96), wherein the limiting plate (96) is fixedly mounted on the top of the mounting frame (91).

8. The steel box girder pedestrian overpass construction device according to claim 7, characterized in that: The lighting assembly (9) further comprises a bolt (97), wherein the bolt (97) is connected to one side of the limiting plate (96) via a thread, and the bolt (97) is connected to the connecting plate (92) via a thread.

9. The steel box girder pedestrian overpass construction device according to claim 1, characterized in that: A reinforcing rod (10) is fixedly mounted on the inner side wall of the column (2), and a plurality of the reinforcing rods (10) are arranged in sequence.

10. The steel box girder pedestrian overpass construction device according to claim 1, characterized in that: A safety guardrail (11) is provided on the top of the distribution beam panel (5), and the safety guardrail (11) is provided around the circumference of the distribution beam panel (5).

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