Steel box girder construction structure in overline operation environment
By designing the construction structure of steel box girders in the cross-line operation environment, using cement mixing piles and foamed concrete layers to reinforce the roadbed, and constructing a steel box girder structure with piers, cap beams, and steel supports, the problem of road widening was solved, road widening and traffic diversion were realized, traffic pressure was alleviated, and the stability of the roadbed and structure was ensured.
Patent Information
- Application Number
- CN202423192014.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-24
AI Technical Summary
In cross-line operation environments, the existing road has insufficient lateral space or is obstructed, making road widening difficult. In particular, the high-voltage tower foundations are located on both sides of the road, which makes road widening even more challenging.
The design of the steel box girder construction structure in the cross-line operation environment includes the original roadbed reinforcement structure and the steel box girder widening structure. The roadbed is reinforced with cement mixing piles and foamed concrete layers. The steel box girder structure with piers, cap beams and steel supports is built. After completion, concrete bridge deck and waterproof layer are laid to form the auxiliary road bridge deck structure. Finally, green belts are set up for isolation.
This enabled safe construction within a safe clearance distance from high-voltage lines, widened roads, separated motor vehicle and non-motor vehicle lanes, alleviated traffic pressure, and ensured the stability of the roadbed and structure.
Smart Images
Figure CN223620876U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of road and bridge construction technology, specifically to the construction structure of steel box girders in cross-line operation environments. Background Technology
[0002] With the increasing volume of motor vehicles and non-motor vehicles, the existing roads can no longer meet the requirements, especially in some rural roads where there are no non-motor vehicle lanes, resulting in motor vehicles and non-motor vehicles traveling together and exacerbating traffic congestion. Therefore, it is necessary to widen the existing roads to separate motor vehicles and non-motor vehicles and alleviate traffic pressure.
[0003] Road widening usually involves excavating one or both sides of the original roadbed to construct a new roadbed; however, it is difficult to construct a new roadbed when the original road has insufficient lateral space or other obstructions.
[0004] The existing high-voltage power lines cross the road at an angle, and the tower foundations of the high-voltage lines are located on both sides of the road, which makes the road widening difficult and inconvenient. Therefore, this utility model proposes a steel box girder construction structure for cross-line operation environment. Utility Model Content
[0005] In order to solve the problems existing in the prior art, this utility model proposes a reasonably designed construction structure for steel box girders in cross-line operation environments.
[0006] The technical solution of this utility model is as follows:
[0007] The construction structure of the steel box girder in the cross-line operation environment includes the original roadbed, the original roadbed reinforcement structure, and the steel box girder widening structure. The original roadbed reinforcement structure is located at one edge of the original roadbed, and the outer side of the original roadbed reinforcement structure is flush with the vertical direction. The steel box girder widening structure is located adjacent to the original roadbed reinforcement structure. The auxiliary road bridge deck structure and the pedestrian bridge deck structure are set above the steel box girder widening structure.
[0008] Furthermore, the original roadbed reinforcement structure includes cement mixing piles and a foamed concrete layer; multiple cement mixing piles are set along the width of the original roadbed, and the foamed concrete layer is set above the cement mixing piles and within the range of the cement mixing piles.
[0009] Furthermore, the steel box girder widening structure includes piers, cap beams, steel supports, and concrete bridge decks; the cap beams are erected on at least two piers, the steel supports are installed on the cap beams, and the concrete bridge decks are erected on adjacent steel supports.
[0010] Furthermore, the steel support includes a base plate, a column, a top plate, and a crossbeam; the column is mounted on the base plate, the top plate is mounted on the top of the column, and two columns are connected by a crossbeam.
[0011] Furthermore, the concrete bridge deck is erected on the top plate of at least two supports.
[0012] Furthermore, a stepped surface is set at the edge of the original roadbed above the area where the cement mixing pile is located, and foamed concrete is poured through the formwork after the formwork is erected to form a foamed concrete layer.
[0013] Furthermore, a green belt is set between the original roadbed and the widened steel box girder structure to isolate the road functions.
[0014] Furthermore, a waterproof layer and asphalt concrete are laid on top of the concrete bridge deck to form the auxiliary road bridge deck structure.
[0015] The beneficial effects of this utility model are as follows:
[0016] 1) By constructing the original roadbed reinforcement structure at the edge of the original road, the original roadbed structure at the edge of the original road is changed, which facilitates the construction of the steel box girder widening structure and realizes the road widening.
[0017] 2) The original roadbed is reinforced by setting cement mixing piles and foamed concrete layers to prevent the original roadbed from settling and collapsing, thus ensuring the stability of the roadbed.
[0018] 3) The steel box girder widening structure adopts the form of concrete piers + cap beams + steel supports, which has better structural stability.
[0019] 4) After the construction was completed, the original road was widened, and the main road, auxiliary road and sidewalk were separated, which helped to alleviate traffic pressure. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the steel support structure of this utility model;
[0022] Figure 3 A route map for setting up the widening structure of the steel box girder of this utility model;
[0023] In the diagram: 1. Cement mixing pile; 2. Foamed concrete layer; 3. Original roadbed; 4. Road surface structure; 5. Auxiliary road bridge deck structure; 6. Pedestrian walkway bridge deck structure; 7. Steel support; 701. Bottom slab; 702. Crossbeam; 703. Support column; 704. Top slab; 8. Cap beam; 9. Pier; 10. Concrete bridge deck. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings.
[0025] like Figure 1 , 3 As shown, the construction structure of the steel box girder in the cross-line operation environment is based on the original roadbed. The original roadbed is reinforced and a steel box girder is set on one side of the original roadbed to widen the original road surface. After widening, auxiliary roads and sidewalks are added, which enhances the function of the road and relieves the pressure on road traffic.
[0026] Before construction, the elevation of the new road and the high-voltage line were compared. The net height of the high-voltage line was measured pier by pier using a total station. Then, the minimum safe distance was subtracted to obtain the allowable working distance for construction. Based on this, appropriate mechanical equipment was selected to ensure safe construction operations within the safe clearance distance of the high-voltage line.
[0027] The construction structure of steel box girder in the cross-line operation environment includes the original roadbed 3, the original roadbed reinforcement structure, and the steel box girder widening structure;
[0028] The original roadbed reinforcement structure includes cement mixing piles 1 set along the road width and the roadside direction. In this embodiment, only the structure in the road width direction is discussed. The setting along the roadside direction is similar to this embodiment.
[0029] Multiple cement mixing piles 1 are arranged side by side below the original roadbed 3 near the widening side. In this embodiment, there are 14 cement mixing piles 1. After the cement mixing piles 1 are constructed, the roadbed is constructed and a stepped surface is set for the construction of the foamed concrete layer 2. After the foamed concrete layer 2 is supported by formwork, foamed concrete is poured in and solidified to form the foamed concrete layer 2. The foamed concrete layer 2 has a vertical plane structure in the vertical direction at the edge of the road to facilitate the construction of the steel box girder widening structure.
[0030] The steel box girder widening structure is a bridge structure. This embodiment only discusses the construction of one section, including two piers 9, a cap beam 8, steel supports 7, and a concrete bridge deck 10. The cap beam 8 is erected on the two piers 9. A support for the installation of the steel support 7 is set in the middle of the cap beam 8. Baffles are set on both sides of the cap beam 8. The steel support 7 is set on the support of the cap beam 8. The concrete bridge deck 10 adopts a prefabricated structure and rests on the steel support 7.
[0031] like Figure 2 As shown, the steel support 7 includes a base plate 701, two columns 703, a top plate 704, and a crossbeam 702. The base plate 701 and the top plate 704 are respectively located at the bottom and top of the columns 703. The steel support 7 is connected to the support of the cap beam 8 through the base plate 701, and the steel support 7 is connected to the concrete bridge deck 10 through the top plate 704. The two columns 703 are connected by the crossbeam 702, which can improve the stability of the steel support 7.
[0032] After the main construction of the original roadbed and the steel box girder widening structure is completed, the road surface and bridge deck are constructed. The road surface structure (such as asphalt concrete) is laid on the original roadbed 3, and a waterproof layer and asphalt concrete are laid on the concrete bridge deck 10 to form the auxiliary road bridge deck structure 5. The sidewalk slab and guardrail are laid on the concrete bridge deck 10 to form the sidewalk bridge deck structure 6.
[0033] Finally, a green belt was set up between the original roadbed 3 and the steel box girder widening structure to separate the main road from the auxiliary road. The main road can be used as a motor vehicle lane, and the auxiliary road can be used as a non-motor vehicle lane.
[0034] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.
Claims
1. A steel box girder construction structure in an overpass operation environment, characterized in that, It includes the original roadbed (3), the original roadbed reinforcement structure, and the steel box girder widening structure; the original roadbed reinforcement structure is set at one edge of the original roadbed (3), and the outer side of the original roadbed reinforcement structure is set flush with the vertical direction; the steel box girder widening structure is set adjacent to the original roadbed reinforcement structure; the auxiliary road bridge deck structure (5) and the pedestrian bridge deck structure (6) are set above the steel box girder widening structure.
2. The steel box girder construction structure in an overpass operation environment according to claim 1, characterized in that, The original roadbed reinforcement structure includes cement mixing piles (1) and foamed concrete layer (2); multiple cement mixing piles (1) are set along the width direction of the original roadbed, and the foamed concrete layer (2) is set above the cement mixing piles (1) and within the range of the cement mixing piles (1).
3. The steel box girder construction structure in an overpass operation environment according to claim 1, characterized in that, The steel box girder widening structure includes piers (9), cap beams (8), steel supports (7), and concrete bridge decks (10); the cap beams (8) are erected on at least two piers (9), the steel supports (7) are set on the cap beams (8), and the concrete bridge decks (10) are erected on adjacent steel supports (7).
4. The steel box girder construction structure in an overpass operation environment according to claim 3, characterized in that, The steel support (7) includes a base plate (701), a column (703), a top plate (704), and a crossbeam (702); the column (703) is set on the base plate (701), the top plate (704) is set on the top of the column (703), and the two columns (703) are connected by the crossbeam (702).
5. The steel box girder construction structure in an overpass operation environment according to claim 4, characterized in that, The concrete bridge deck (10) is erected on the top plate (704) of at least two supports (703).
6. The steel box girder construction structure in an overpass operation environment according to claim 2, characterized in that, A stepped surface is set on the edge of the original roadbed (3) above the area where the cement mixing pile (1) is located. After the formwork is erected, foamed concrete is poured through the formwork to form a foamed concrete layer (2).
7. The steel box girder construction structure in an overpass operation environment according to claim 1, characterized in that, A green belt is set between the original roadbed (3) and the steel box girder widening structure.
8. The steel box girder construction structure in an overpass operation environment according to claim 3, characterized in that, A waterproof layer and asphalt concrete are laid on top of the concrete bridge deck (10) to form the auxiliary road bridge deck structure (5).