A high-altitude and long-span overpass for municipal bridges

Abstract

This invention discloses an elevated walkway for large-span municipal bridges, relating to the technical field of municipal bridge construction equipment. The walkway includes an elevated passageway comprising main beams, crossbeams, and bamboo plywood. Two main beams are arranged in parallel, and multiple crossbeams are welded to the two main beams. These crossbeams are perpendicular to the main beams and equidistantly distributed, with multiple bamboo plywood sheets laid on them. A support assembly is connected to the bottom of one end of the elevated walkway, and the bottom of the support assembly is erected on the bridge under construction. The walkway features a steel support structure. In this invention, workers can directly enter the bridge under construction via ladders, the elevated walkway, or small ladders, entering from the middle of the bridge to perform corresponding construction operations. This eliminates the need for long-distance travel from the beginning or end of the bridge to reach the corresponding construction site, greatly saving construction time and improving construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of municipal bridge construction equipment technology, and in particular to a skybridge passage for high-altitude, long-span municipal bridges. Background Technology

[0002] When constructing municipal bridges, existing standardized access ramps are located close to the outer side of the bridge or under the bridge to allow construction workers to access the bridge for operations. However, the area under the bridge is often a road for vehicles, and if ordinary access ramps are used, the location of the access ramps will occupy part of the existing road, affecting the efficiency of vehicle traffic, or even occupy the entire road, forcing vehicles to detour and affecting the efficiency of vehicle traffic on surrounding roads, thus failing to meet the traffic requirements of vehicles below.

[0003] Especially during the construction phase of municipal bridge deck systems, when the entire bridge needs to be closed, construction workers cannot directly access the bridge from the middle. They often need to climb the bridge from the beginning and end points and then travel a long distance to reach the construction site, which increases their commuting time and reduces construction efficiency. Summary of the Invention

[0004] The present invention proposes an elevated pedestrian walkway for large-span municipal bridges, aiming to solve the problem that the location of the pedestrian walkway set up during the construction of municipal bridges in traditional technologies would occupy part of the existing road and affect the traffic efficiency of vehicles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A skybridge passageway for long-span, high-altitude municipal bridges, comprising:

[0007] An elevated walkway includes main beams, cross beams, and bamboo plywood. Two main beams are arranged in parallel, and multiple cross beams are welded to the two main beams. The multiple cross beams are perpendicular to the main beams and are distributed at equal intervals. Multiple bamboo plywood is laid on the multiple cross beams.

[0008] Wherein: a support component is connected to the bottom of one end of the overhead passage, and the bottom end of the support component is erected on the bridge to be constructed;

[0009] The steel support structure includes steel pipe columns, an intra-group connection system, an inter-group connection system, a concrete base, and anchor bolts. The four steel pipe columns are divided into two groups. The two steel pipe columns in the same group are connected by an intra-group connection system, and the two groups of steel pipe columns are connected by an inter-group connection system. The bottom of each of the four steel pipe columns is bolted with multiple anchor bolts, and the multiple anchor bolts are all pre-installed in the concrete base.

[0010] A connecting assembly includes a support platform, connecting grooves, fixing bolts, pins, and pin slots. The support platform is fixedly connected to the top of four steel pipe columns. Two connecting grooves are opened on the support platform. The ends of the two main beams away from the support assembly are correspondingly fitted with the two connecting grooves with clearance. Multiple fixing bolts are threadedly connected to the support platform. Pins are connected to the bottom ends of the fixing bolts. Pin slots are opened on the main beams, wherein the rotation of the fixing bolts pushes the pins to connect in the pin slots.

[0011] A ladder cage is installed on one side of a steel support structure, and the top outlet of the ladder cage is connected to the top of the overhead passage.

[0012] The guardrails are installed on the top of the ladder cage and on both sides of the overhead passage.

[0013] Preferably, both the main beam and the crossbeam are made of I-beams to improve their supporting capacity.

[0014] Preferably, the guardrail includes a fall arresting rail and a steel mesh. The bottom end of the fall arresting rail is fixedly connected to the edge of the support platform and both ends of the crossbeam. The steel mesh is fixedly connected to the fall arresting rail to provide protection for workers walking on it.

[0015] Preferably, both the intra-group connection system and the inter-group connection system are made of channel steel. The intra-group connection system is composed of channel steel perpendicular to the steel pipe columns, and the inter-group connection system is composed of channel steel perpendicular to the steel pipe columns and channel steel inclined between two adjacent channel steels. The intra-group connection system and the inter-group connection system are used to fix the four steel pipe columns.

[0016] Preferably, the support assembly includes a structural column and a distribution beam. The distribution beam is fixedly connected to the lower surface of the main beam. The structural column is welded to the bottom of the distribution beam. The bottom end of the structural column abuts against the bridge to be constructed. Both the structural column and the distribution beam are made of double-span I-beams.

[0017] Preferably, a small ladder is erected between the end of the overhead passage near the bridge to be constructed and the bridge to be constructed, so as to connect the overhead passage and the bridge to be constructed when the overhead passage crosses the bridge railing.

[0018] Preferably, a gear is coaxially fixedly connected to the bottom end of the fixing bolt, and a rack is fixedly connected to the outside of the pin shaft. The gear and the rack mesh with each other, wherein the axial length of the gear along the fixing bolt is greater than the width of the rack, so that the gear and the rack are kept meshed when the fixing bolt is spirally moving, which facilitates the driving of the pin shaft to move when the fixing bolt is rotated.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The main components of this invention are all materials that can be used on construction sites, which are readily available and inexpensive.

[0021] 2. In this invention, workers can directly enter the bridge to be constructed through ladder cages, overhead passages, or small climbing ladders, and enter the bridge from the middle section to carry out the corresponding construction operations. There is no need to move a long distance from the beginning or end of the bridge to reach the corresponding construction site on the bridge, which greatly saves construction time and improves construction efficiency.

[0022] 3. This invention completes the construction of the steel support structure through anchor bolts, and completes the suspended erection of the overhead passage through connecting components, as well as the use of ladder cages and small climbing ladders, which improves the reusability of the overall structure and facilitates on-site construction and disassembly for reuse.

[0023] 4. This invention, through the suspended construction of an overhead passage, can meet the traffic needs beneath the bridge and is applicable to all bridge construction projects with traffic requirements.

[0024] 5. This invention requires a small footprint and is suitable for environments with limited space. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a side view schematic diagram of the present invention;

[0027] Figure 3 This is a top view of the present invention;

[0028] Figure 4 This is a rear view schematic diagram of the steel support structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the protective fence structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the connection component structure of the present invention.

[0031] In the diagram: 1. Overpass, 2. Main beam, 3. Crossbeam, 4. Bamboo plywood, 5. Guardrail, 6. Fall arrest railing, 7. Steel mesh, 8. Steel support structure, 9. Steel pipe column, 10. Internal connection system, 11. Interconnection system, 12. Concrete base, 13. Anchor bolt, 14. Ladder cage, 15. Support component, 16. Structural column, 17. Distribution beam, 18. Small ladder, 19. Connecting component, 20. Support platform, 21. Connecting groove, 22. Fixing bolt, 23. Pin, 24. Pin groove. Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] Reference Figure 1-3 A skybridge passageway for high-altitude, long-span municipal bridges, comprising:

[0034] The elevated passage 1 includes a main beam 2, crossbeams 3, and bamboo plywood 4. The two main beams 2 are set in parallel, and multiple crossbeams 3 are welded to the two main beams 2. The multiple crossbeams 3 are perpendicular to the main beams 2 and are distributed at equal intervals. Both the main beams 2 and the crossbeams 3 are made of I-beams. A connecting frame is set at the end of the main beam 2 near the bridge to be constructed, which can be used to extend the main beam 2 to meet the requirements of larger spans.

[0035] The two main beams 2 are both made of 10m 32# I-beams, spaced 1.1m apart; the multiple crossbeams 3 are all made of 1.5m 14# I-beams, and are welded together at 20cm intervals.

[0036] Multiple bamboo plywood boards 4 are laid on multiple crossbeams 3. The bamboo plywood boards 4 are 1.25m wide and are laid densely to avoid gaps between adjacent bamboo plywood boards 4.

[0037] Among them: the bottom of one end of the overhead passage 1 is connected to the support component 15, and the bottom end of the support component 15 is erected on the bridge to be constructed; the support component 15 includes a structural column 16 and a distribution beam 17, the distribution beam 17 is fixedly connected to the lower surface of the main beam 2, the bottom of the distribution beam 17 is welded to the structural column 16, the bottom end of the structural column 16 abuts against the bridge to be constructed, and both the structural column 16 and the distribution beam 17 are made of two sets of 40# double-jointed I-beams.

[0038] Reference Figure 2-4 The steel support structure 8 includes steel pipe columns 9, intra-group connection system 10, inter-group connection system 11, concrete base 12, and anchor bolts 13.

[0039] The four steel pipe columns 9 are divided into two groups. All four steel pipe columns 9 are made of 7mm Φ325 steel pipe. The two steel pipe columns 9 in the same group are connected by an intra-group connection system 10. The two groups of steel pipe columns 9 are connected by an inter-group connection system 11. Both the intra-group connection system 10 and the inter-group connection system 11 are made of 16# channel steel. The intra-group connection system 10 is composed of channel steel perpendicular to the steel pipe columns 9. The inter-group connection system 11 is composed of channel steel perpendicular to the steel pipe columns 9 and channel steel inclined between two adjacent channel steels.

[0040] The bottom of each of the four steel pipe columns 9 is bolted with 8 M20*600mm anchor bolts 13. All the anchor bolts 13 are pre-installed in the concrete base 12. The concrete base 12 is a C30 plain concrete structure with a foundation size of 1m×2m×0.6m.

[0041] Reference Figure 6 The connecting component 19 includes a support platform 20, a connecting groove 21, fixing bolts 22, pins 23, and pin grooves 24. The support platform 20 is fixedly connected to the top of four steel pipe columns 9. Two connecting grooves 21 are opened on the support platform 20. The ends of the two main beams 2 away from the support component 15 are matched with the two connecting grooves 21 with clearance. Multiple fixing bolts 22 are threaded on the support platform 20. Pins 23 are connected to the bottom of the fixing bolts 22. Pin grooves 24 are opened on the main beams 2. The fixing bolts 22 rotate to push the pins 23 to be pin connected in the pin grooves 24.

[0042] A gear is coaxially fixed to the bottom of the fixing bolt 22, and a rack is fixedly connected to the outside of the pin 23. The gear and the rack mesh with each other. The axial length of the gear along the fixing bolt 22 is greater than the width of the rack. When the fixing bolt 22 is rotated, the fixing bolt 22 drives the gear to rotate. The rotation of the gear drives the rack to move. The movement of the rack causes the pin 23 to be pinned into the pin groove 24 on the main beam 2, thus limiting one end of the main beam 2. The bolt and pin connection method facilitates installation and disassembly.

[0043] The ladder cage 14 is located on one side of the steel support structure 8. The top outlet of the ladder cage 14 is connected to the top of the overhead passage 1. The ladder cage 14 adopts the existing technology of a 7-section standardized ladder cage.

[0044] Reference Figure 5 The guardrail 5 is installed on the top of the ladder cage 14 and on both sides of the overhead passage 1. It is a 1.5m fall arrest railing. The guardrail 5 includes a fall arrest railing 6 and a steel mesh 7. The bottom end of the fall arrest railing 6 is fixedly connected to the edge of the support platform 20 and both ends of the crossbeam 3. The fall arrest railing is made of 5*5*0.2cm square steel pipe. The steel mesh 7 is fixedly connected to the fall arrest railing 6.

[0045] A small ladder 18 is installed between the end of the elevated passage 1 and the bridge to be constructed, which is used to connect the elevated passage 1 and the bridge to be constructed.

[0046] When constructing this invention, materials can be sourced locally at the construction site. First, the concrete base 12 with the pre-embedded anchor bolts 13 is poured. Then, the fixed support platform 20 and the four steel pipe columns 9 with the welded intra-group connection system 10 and inter-group connection system 11 are fixed to the anchor bolts 13 by bolts, thus completing the construction of the steel support structure 8.

[0047] Next, the two main beams 2 with multiple crossbeams 3 are hoisted and welded, so that one end of the main beam 2 rests on the support platform 20 and the other end rests on the sliding frame on the bridge to be constructed. Then, the main beam 2 is hoisted so that one end of the main beam 2 is inserted into the connecting groove 21 in the support platform 20. Then, multiple fixing bolts 22 are rotated so that the pin shaft 23 is pinned to the pin groove 24 on the main beam 2, thus limiting one end of the main beam 2. Then, the support component 15 is welded to replace the sliding frame, thus limiting both ends of the main beam 2. Finally, the guardrail 5 is installed on the overhead passage 1 to complete the construction of the overhead passage 1.

[0048] Finally, the ladder cage 14 is fastened to the steel support structure 8, and the small climbing ladder 18 is erected on the overhead passage 1 and the bridge to be constructed, thus completing the construction of this invention. Workers can then move to the overhead passage 1 via the ladder cage 14, and then directly enter the bridge to be constructed from the overhead passage 1 via the small climbing ladder 18. They can directly enter the bridge from the middle section to carry out the corresponding construction operations, without having to move a long distance from the beginning or end of the bridge to reach the corresponding construction site, which greatly saves construction time and improves construction efficiency. At the same time, the suspended construction of the overhead passage 1 can meet the traffic needs under the bridge, making it suitable for all bridge construction projects with traffic needs.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A skybridge passageway for long-span, high-altitude municipal bridges, characterized in that, include: An elevated passage (1) includes a main beam (2), a crossbeam (3) and a bamboo plywood (4). The two main beams (2) are arranged in parallel. Multiple crossbeams (3) are welded to the two main beams (2). The multiple crossbeams (3) are perpendicular to the main beams (2) and are distributed at equal intervals. Multiple bamboo plywood (4) is laid on the multiple crossbeams (3). Wherein: the bottom of one end of the overhead passage (1) is connected to a support component (15), and the bottom of the support component (15) is erected on the bridge to be constructed; The steel support structure (8) includes steel pipe columns (9), an intra-group connection system (10), an inter-group connection system (11), a concrete base (12), and anchor bolts (13). The four steel pipe columns (9) are divided into two groups. The two steel pipe columns (9) in the same group are connected by an intra-group connection system (10), and the two groups of steel pipe columns (9) are connected by an inter-group connection system (11). The bottom of each of the four steel pipe columns (9) is bolted with multiple anchor bolts (13), and the multiple anchor bolts (13) are all pre-set in the concrete base (12). The connecting assembly (19) includes a support platform (20), a connecting groove (21), a fixing bolt (22), a pin (23), and a pin groove (24). The support platform (20) is fixedly connected to the top of four steel pipe columns (9). Two connecting grooves (21) are opened on the support platform (20). The ends of the two main beams (2) away from the support assembly (15) are matched with the two connecting grooves (21) with a clearance fit. Multiple fixing bolts (22) are threaded on the support platform (20). The bottom end of the fixing bolt (22) is connected to the pin (23). The main beam (2) is provided with a pin groove (24). The fixing bolt (22) rotates to push the pin (23) to be pin connected in the pin groove (24). A ladder cage (14) is set on one side of a steel support structure (8), and the top outlet of the ladder cage (14) is connected to the top of the overhead passage (1); The guardrail (5) is installed on the top of the ladder cage (14) and on both sides of the overhead passage (1); A gear is coaxially fixed to the bottom end of the fixing bolt (22), and a rack is fixedly connected to the outside of the pin (23). The gear and the rack mesh with each other, wherein the axial length of the gear along the fixing bolt (22) is greater than the width of the rack.

2. A skybridge passage for long-span, high-altitude municipal bridges according to claim 1, characterized in that, in: Both the main beam (2) and the crossbeam (3) are made of I-beams.

3. A skybridge passage for long-span, high-altitude municipal bridges according to claim 1, characterized in that, in: The guardrail (5) includes a fall arresting rail (6) and a steel mesh (7). The bottom end of the fall arresting rail (6) is fixedly connected to the edge of the support platform (20) and both ends of the crossbeam (3). The steel mesh (7) is fixedly connected to the fall arresting rail (6).

4. A skybridge passage for long-span, high-altitude municipal bridges according to claim 1, characterized in that, in: Both the intra-group connection system (10) and the inter-group connection system (11) are made of channel steel. The intra-group connection system (10) is composed of channel steel perpendicular to the steel pipe column (9), and the inter-group connection system (11) is composed of channel steel perpendicular to the steel pipe column (9) and channel steel inclined between two adjacent channel steels.

5. A skybridge passage for long-span, high-altitude municipal bridges according to claim 1, characterized in that, in: The support component (15) includes a structural column (16) and a distribution beam (17). The distribution beam (17) is fixedly connected to the lower surface of the main beam (2). The structural column (16) is welded to the bottom of the distribution beam (17). The bottom end of the structural column (16) abuts against the bridge to be constructed. Both the structural column (16) and the distribution beam (17) are made of double-span I-beams.

6. A skybridge passage for long-span, high-altitude municipal bridges according to claim 1, characterized in that, in: A small ladder (18) is installed between the elevated passage (1) and the bridge to be constructed at one end.

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