Butt-joint assembled steel structure bridge
Through the design of the butted and assembled steel structure bridge, the problem of space occupied and traffic obstruction during the construction of the pedestrian bridge was solved, and efficient construction and the strength improvement of the bridge structure were achieved to adapt to the passage of disabled people.
Patent Information
- Application Number
- CN202420757897.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-04-12
AI Technical Summary
The construction of existing urban road pedestrian bridges requires the use of a lot of space and hinder traffic, resulting in waste of land space.
The steel structure bridge design adopts butt-jointed assembly, including main beam steel box beam, end beam steel box beam, main tower, stairway, elevator and pier. The construction is completed by crane hoisting and splicing, and the overall structural strength of the bridge is improved through the main tower and main cable. and support capabilities.
During the construction of the pedestrian bridge, the steel box girders were hoisted and spliced by a crane, which saved construction space and reduced the impact on traffic. The strength and support capacity of the bridge were improved through the main tower and main cable structures to accommodate the passage of disabled people. .
Smart Images
Figure CN222375170U_ABST
Abstract
Description
Technical Field
[0001] The utility model patent relates to the technical field of steel structure bridges, and specifically, to butt-assembled steel structure bridges. Background Art
[0002] A steel structure bridge is a bridge whose main load-bearing structure is made of steel, that is, a steel structure bridge or a steel bridge. A steel structure bridge is a form of bridge, which means that the main load-bearing part of the superstructure of a bridge is made of steel. Like other bridges, steel structure bridges are aerial roads that cross rivers, lakes, and ocean obstacles. Among them, large-span bridges are mostly prestressed steel concrete bridges and steel structure bridges. The structure of a steel structure bridge is composed of a main bridge along the longitudinal direction of the bridge.
[0003] The construction of existing pedestrian bridges on urban roads requires a lot of space and hinders traffic. Utility Model Content
[0004] The utility model aims to provide a butt-assembled steel structure bridge, aiming to solve the problem of waste of land space between the wall and the land red line in the prior art.
[0005] The utility model is realized in that a butt-assembled steel structure bridge comprises a main beam steel box girder, both ends of the main beam steel box girder are connected with end beam steel box girder, a main tower is connected to the main beam steel box girder, the main tower is composed of two tower columns and a cross beam, the cross beam is arranged between the two tower columns, the main tower is connected to the main beam steel box girder through a main cable, a sling, a back cable and a cable clamp, both ends of the two end beam steel box girders are arranged with stairways, one side of the two end beam steel box girders is arranged with elevators, and bridge piers are arranged at the bottom of the main beam steel box girder and the stairway.
[0006] Preferably, the main beam steel box girder is connected to the two end beam steel box girders in a T shape.
[0007] Preferably, the main tower adopts a double-cable surface form, and two tower columns are arranged in a V shape on both sides of the main beam steel box girder, and the single-side tower column is inclined by 21.17°.
[0008] Preferably, the tower column adopts a pentagonal box-shaped variable cross-section with one side protruding, and the main tower structure adopts Q355C steel.
[0009] Preferably, the staircase includes a 1:4 mixed staircase for bicycles and a 1:2 mixed staircase for pedestrians, and the steel used for the staircase is Q235C.
[0010] Preferably, the elevator is a steel frame structure, mainly composed of box-type components and H-type components, and the steel material is Q355B.
[0011] Preferably, the diameter of the ladder bridge pier is 1m, the diameter of the main beam bridge pier is 1.2m, and the piers are all made of steel pipe columns and poured with C35 self-compacting shrinkage compensating concrete.
[0012] Preferably, the steel box girders in the main beam steel box girder and the end beam steel box girder are joined by top-to-bottom drop-in docking, the panel and the bottom plate are staggered by 400mm, and the web interface is in the middle of 400mm.
[0013] Preferably, the outer surface of the top plate of the steel box girder of the main beam steel box girder and the end beam steel box girder is sprayed with an infinite zinc-rich primer, and the outer surface except the bridge deck is sprayed with epoxy zinc-rich primer, epoxy sealing paint, epoxy paint, acrylic polyurethane topcoat and fluorocarbon topcoat from the inside to the outside.
[0014] Preferably, the steel box girders of the main beam steel box girder and the end beam steel box girder are sprayed with epoxy zinc-rich primer, epoxy paint and various colors of anti-corrosion epoxy topcoats from the inside to the outside.
[0015] Compared with the prior art, the butt-assembled steel structure bridge provided by the utility model, through the arrangement of structures such as the main beam steel box girder and the end beam steel box girder, can complete the construction of the pedestrian bridge by only hoisting and splicing the corresponding steel box girder by a crane. At the same time, through the arrangement of the main tower, the overall structural strength and supporting capacity of the pedestrian bridge can be improved through structures such as the main cable and back cable between the main tower and the main beam steel box girder. The elevator arranged at the end beam steel box girder can facilitate the disabled to pass through the pedestrian bridge. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall layout of the butt-assembled steel structure bridge provided by the utility model;
[0017] Figure 2 The utility model provides a schematic diagram of the cross-sectional structure of a main beam steel box girder and an end beam steel box girder of a butt-assembled steel structure bridge.
[0018] Description of reference numerals:
[0019] 1. Main beam steel box girder; 2. End beam steel box girder; 3. Main tower; 4. Stairway; 5. Elevator; 6. Bridge pier. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0021] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.
[0022] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0023] Reference Figure 1 As shown, it is a preferred embodiment provided by the utility model.
[0024] A butt-assembled steel structure bridge comprises a main beam steel box girder 1, both ends of the main beam steel box girder 1 are connected with end beam steel box girders 2, a main tower 3 is connected to the main beam steel box girder 1, the main tower 3 is composed of two tower columns and a cross beam, the cross beam is arranged between the two tower columns, the main tower 3 is connected to the main beam steel box girder 1 through a main cable, a sling, a back cable and a cable clamp, both ends of the two end beam steel box girders 2 are arranged with stairways 4, one side of the two end beam steel box girders 2 is arranged with an elevator 5, and the bottom of the main beam steel box girder 1 and the stairway 4 are arranged with bridge piers 6.
[0025] By arranging structures such as the main beam steel box girder 1 and the end beam steel box girder 2, the construction of the pedestrian bridge can be completed by only lifting and splicing the corresponding steel box girders by a crane. At the same time, by arranging the main tower 3, the overall structural strength and supporting capacity of the pedestrian bridge can be improved through structures such as the main cable and the back cable between the main tower 3 and the main beam steel box girder 1. The elevator 5 arranged at the end beam steel box girder 2 can facilitate the passage of the pedestrian bridge by disabled people.
[0026] Specifically, in this embodiment, the main beam steel box girder 1 and the two end beam steel box girders 2 are connected in a T shape.
[0027] The end beam steel box girder 2 connected to the main beam steel box girder 1 in a T-shape can facilitate the butt assembly of the ladder 4 and the end beam steel box girder 2.
[0028] Specifically, in this embodiment, the main tower 3 adopts a double cable plane form, and two tower columns are arranged in a V shape on both sides of the main beam steel box girder 1, and the single-side tower column is inclined by 21.17°.
[0029] Through the two tower columns, a double cable plane system can be realized, thereby improving the supporting effect on the main beam steel box girder 1 and making the force more uniform.
[0030] Specifically, in this embodiment, the tower column adopts a pentagonal box-shaped variable cross-section with a single-side protrusion, and the main tower 3 structure is made of Q355C steel.
[0031] The pentagonal box-shaped variable-section tower column can ensure the structural strength of the tower column itself, thereby ensuring the service life of the pedestrian bridge.
[0032] Specifically, in this embodiment, the stairway 4 includes a 1:4 mixed stairway for people and bicycles 4 and a 1:2 mixed stairway for pedestrians 4 , and the steel used for the stairway 4 is Q235C.
[0033] By arranging the 1:4 mixed bicycle stairway 4 and the 1:2 pedestrian stairway 4, the pedestrian passage mode can be improved and certain convenience can be provided for pedestrians.
[0034] Specifically, in this embodiment, the elevator 5 is a steel frame structure, mainly composed of box-type components and H-type components, and the steel material is Q355B.
[0035] Specifically, in this embodiment, the diameter of the pier 6 of the ladder 4 is 1 m, and the diameter of the main beam pier 6 is 1.2 m. The piers 6 are all made of steel pipe columns and poured with C35 self-compacting shrinkage compensating concrete to ensure the bearing capacity and support capacity of the piers 6.
[0036] Specifically, in this embodiment, the steel box girders in the main beam steel box girder 1 and the end beam steel box girder 2 are joined by top-to-bottom drop-in docking, the panel and the bottom plate are staggered by 400mm, and the web interface is in the middle of 400mm, so as to facilitate the docking between the steel box girders while ensuring the docking strength between the steel box girders.
[0037] Specifically, in the present embodiment, the outer surfaces of the top plates of the steel box girders of the main beam steel box girder 1 and the end beam steel box girder 2 are sprayed with an inorganic zinc-rich primer, and the outer surfaces except the bridge deck are sprayed with epoxy zinc-rich primer, epoxy sealing paint, epoxy paint, acrylic polyurethane topcoat and fluorocarbon topcoat from the inside to the outside, and the interiors of the steel box girders of the main beam steel box girder 1 and the end beam steel box girder 2 are sprayed with epoxy zinc-rich primer, epoxy paint and various anti-corrosion epoxy topcoats from the inside to the outside, which can ensure the anti-corrosion and anti-rust performance of the steel box girder, and thus ensure the service life of the pedestrian overpass.
[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. The butt-jointed steel structure bridge is characterized by: It includes a main beam steel box girder, both ends of the main beam steel box girder are connected with end beam steel box girders, the main beam steel box girder is connected with a main tower, the main tower is composed of two tower columns and a cross beam, the cross beam is arranged between the two tower columns, the main tower is connected to the main beam steel box girder through a main cable, a sling, a back cable and a cable clamp, both ends of the two end beam steel box girders are arranged with stairways, one side of the two end beam steel box girders is arranged with elevators, and the bottom of the main beam steel box girder and the stairway are arranged with bridge piers.
2. The butt-jointed steel structure bridge according to claim 1, characterized in that: The main beam steel box girder is connected to the two end beam steel box girders in a T shape.
3. The butt-jointed steel structure bridge according to claim 1, characterized in that: The main tower adopts a double-cable surface form, and two tower columns are arranged in a V shape on both sides of the main beam steel box girder, and the single-side tower column is inclined by 21.17°.
4. The butt-jointed steel structure bridge according to claim 1, characterized in that: The tower column adopts a pentagonal box-shaped variable cross-section with a single-side protrusion, and the main tower structure is made of Q355C steel.
5. The butt-jointed steel structure bridge according to claim 1, characterized in that: The stairways include a 1:4 mixed bicycle stairway and a 1:2 pedestrian stairway, and the steel used for the stairways is Q235C.
6. The butt-jointed steel structure bridge according to claim 1, characterized in that: The elevator is a steel frame structure, mainly composed of box-type components and H-type components, and the steel material is Q355B.
7. The butt-jointed steel structure bridge according to claim 1, characterized in that: The diameter of the ladder bridge pier is 1m, and the diameter of the main beam bridge pier is 1.2m. The piers are all made of steel pipe columns and poured with C35 self-compacting shrinkage compensating concrete.
8. The butt-jointed steel structure bridge according to claim 1, characterized in that: The steel box girders in the main beam steel box girder and the end beam steel box girder are joined by top-to-bottom drop-in docking, the face plate and the bottom plate are staggered by 400mm, and the web interface is in the middle of 400mm.
9. The butt-jointed steel structure bridge according to claim 1, characterized in that: The outer surfaces of the top plates of the main beam steel box girder and the end beam steel box girder are sprayed with an infinite zinc-rich primer, and the outer surfaces except the bridge deck are sprayed with epoxy zinc-rich primer, epoxy sealing paint, epoxy paint, acrylic polyurethane topcoat and fluorocarbon topcoat from inside to outside.
10. The butt-jointed steel structure bridge according to claim 1, characterized in that: The steel box girders of the main beam steel box girder and the end beam steel box girder are sprayed with epoxy zinc-rich primer, epoxy paint and various colors of anti-corrosion epoxy topcoats from inside to outside.