CN211815481U - Large-span suspension type rail transit bridge - Google Patents

Abstract

The utility model discloses a large-span suspension type track traffic bridge, include: a load bearing system comprising a load bearing beam; the connecting system comprises brackets, ear plates and pin shafts, the brackets are arranged on two sides of the bearing beam, and the track beam is connected with the brackets through the ear plates and the pin shafts; and the track system comprises a track beam, and the vehicle is suspended below the track beam and is connected with the bearing system through the connecting system. The utility model discloses a large-span suspension type track traffic bridge can promote suspension type track traffic's leap over ability, realizes the large-span leap over to special district barriers such as great road, river, valley.

Description

Large-span suspension type rail transit bridge

Technical Field

The utility model relates to a building field especially relates to a large-span suspension type track traffic bridge.

Background

In recent years, with the rapid development of the national transportation industry, a plurality of novel rail transportation systems are developed successively. Suspension type rail transit is also called aerial rail, air rail for short, is a new urban rail transit system different from subway, light rail and magnetic suspension, and can increase the transport capacity of urban traffic network on the premise of not changing the original urban traffic layout. The vehicle is suspended below a box-shaped track beam to run, the track beam is supported in the air by a steel column or a reinforced concrete upright column, and running wheels and guide wheels of the vehicle are positioned in the box beam and run along a track arranged in a beam body.

At present, domestic suspension type rail transit bridges are mostly of simple beam structures, a beam-rail integrated form is adopted, the rail beams are also used as bearing beams, and bridge bottom plates are also used as wheel-rail walking surfaces. The common span is 25m, 20m, 16m and the like, and the obstacle crossing capability of large roads, rivers, valleys and the like is insufficient.

Therefore, a novel bridge structure is needed, which can improve the spanning capability of the suspension type rail transit and realize the large-span spanning of the obstacles in special areas such as large roads, rivers, valleys and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can promote suspension type track traffic's strideing across ability, realize the large-span suspension type track traffic bridge of strideing across to the large-span of special district barrier.

In order to achieve the above object, the utility model discloses a specific technical scheme of large-span suspension type track traffic bridge does:

a large-span suspended rail transit bridge, comprising: a load bearing system comprising a load bearing beam; the connecting system comprises brackets, ear plates and pin shafts, the brackets are arranged on two sides of the bearing beam, and the track beam is connected with the brackets through the ear plates and the pin shafts; and the track system comprises a track beam, and the vehicle is suspended below the track beam and is connected with the bearing system through the connecting system.

Further, the ear plates are pre-embedded into the bracket.

Further, a shear nail used for increasing the shear strength of the section of the bracket is arranged between the ear plate and the bracket.

Furthermore, the bearing beam is a prestressed concrete continuous beam or a continuous rigid frame.

The utility model discloses a large-span suspension type track traffic bridge's advantage lies in:

1) the suspension type rail transit long-span composite structure bridge has the beneficial effects that the spanning capability of the bridge can be greatly improved;

2) the bearing beam is used as a main stress structure to span a large obstacle, and the track beam is suspended on two sides of the bearing beam through connecting components such as brackets, ear plates, pin shafts and the like, so that the design of a stand column is cancelled, and the problem that no stand column setting condition exists when the suspension type track traffic bridge passes through a special section is solved;

3) can be used for the circuit to realize crossing over the large-span of great barrier when passing through special district, through with spandrel girder and track roof beam separation, the track roof beam passes through connecting elements to be hung in spandrel girder both sides, by the spandrel girder structure as main atress component, the structure atress is clear and definite, has promoted the span of suspension type track traffic bridge by a wide margin. The bearing beam structure system can adopt bridge type with various large-span special structures, greatly improves the span of the suspension type rail transit bridge and has wider application range;

4) the bearing beam structure can be reconstructed based on the original long-span highway and railway bridges, or planning driving conditions are reserved during design, so that one bridge has multiple purposes;

5) novel structure, pleasing to the eye have promoted suspension type track traffic bridge's view effect.

Drawings

Fig. 1 is a schematic structural diagram of a bridge type in the present invention;

fig. 2 is a top view of a bridge of the present invention;

fig. 3 is a schematic cross-sectional view of the cross-section of the rail beam fulcrum in the present invention;

fig. 4 is a schematic view of the connection between the bracket and the track beam of the present invention.

In the figure: 1. a track beam; 2. a bracket; 3. an ear plate; 4. a spandrel girder; 5. a pin shaft; 6. a shear pin.

Detailed Description

For better understanding the utility model discloses an aim, structure and function, below combine the figure, right the utility model discloses a further detailed description is made to large-span suspension type track traffic bridge.

As shown in fig. 1 to 4, it is shown that the utility model discloses a large-span suspension type rail transit bridge, including bearing system, track system and connection system. The bearing system is a main stressed structure and comprises a bearing beam 4, and the bearing beam 4 is a large-span prestressed concrete bridge; the track system comprises a track beam 1, and vehicles are suspended below the box-shaped track beam 1 to run.

Further, the utility model discloses with spandrel girder 4 and 1 separation of track roof beam, parallel, spandrel girder 4 adopts longspan structures such as prestressed concrete continuous beam, continuous rigid frame, and track roof beam 1 adopts standard beam sections such as 25m, 20m, 16 m.

Further, the connection system includes bracket 2, otic placode 3 and round pin axle 5, and bracket 2 is concrete material, sets up in the roof beam end department that 4 roof sides of spandrel girder correspond track roof beam 1, and track roof beam 1 passes through otic placode 3, round pin axle 5 and links to each other with bracket 2. When the air-railway train runs, the rail beam 1 with the steel structure bears the weight of the train body, the load of the train and the like, the load is transmitted to the bearing system through the pin shaft 5, the lug plate 3 and the bracket 2 of the connecting system, the rail system and the bearing system are connected together through the connecting system to realize the transmission of force, and the bearing beam 4 is used as a main stress structure to span a large obstacle.

Further, as shown in fig. 4, the ear plate 3 is embedded in the bracket 2, and a shear nail 6 for increasing the cross-sectional shear strength of the bracket 2 is arranged between the ear plate 3 and the bracket 2.

The utility model discloses cancelled traditional suspension type track traffic bridge's stand design, changed into and hung in bearing roof beam body both sides through the connection system with the track roof beam. And, the utility model provides a standard beam section such as 25m, 20m, 16m can be adopted to track roof beam 1, and spandrel girder 4 adopts various large-span structures such as prestressed concrete continuous beam, continuous rigid frame, has promoted the leap over ability to special district and barrier by a wide margin, has solved the problem that the circuit does not have the stand to set up the condition when passing through special district. For the suspension type rail transit with the double-line design, under the influence of the transverse width of a bearing beam box body and a pier, in order to meet the requirement of a building boundary, when a line passes through the large-span structure in the form, the line distance is properly increased, and the line distance is gradually recovered to the design standard line distance after passing through the large-span structure.

The utility model relates to a large-span suspension type rail transit bridge, which can achieve the beneficial effect of greatly improving the spanning capability; the bearing beam is used as a main stress structure to span a large obstacle, and the track beam is suspended on two sides of the bearing beam through connecting components such as brackets, ear plates, pin shafts and the like, so that the design of a stand column is cancelled, and the problem that no stand column setting condition exists when the suspension type track traffic bridge passes through a special section is solved; can be used for the circuit to realize crossing over the large-span of great barrier when passing through special district, through with spandrel girder and track roof beam separation, the track roof beam passes through connecting elements to be hung in spandrel girder both sides, by the spandrel girder structure as main atress component, the structure atress is clear and definite, has promoted the span of suspension type track traffic bridge by a wide margin. The bearing beam structure system can adopt bridge type with various large-span special structures, greatly improves the span of the suspension type rail transit bridge and has wider application range; the bearing beam structure can be reconstructed based on the original long-span highway and railway bridges, or planning driving conditions are reserved during design, so that one bridge has multiple purposes; novel structure, pleasing to the eye have promoted suspension type track traffic bridge's view effect.

The present invention has been further described with reference to specific embodiments, but it should be understood that the specific description herein should not be construed as limiting the spirit and scope of the present invention, and that various modifications to the above-described embodiments, which would occur to persons skilled in the art after reading this specification, are within the scope of the present invention.

Claims (2)

1. The utility model provides a large-span suspension type track traffic bridge which characterized in that includes:

a load bearing system comprising a load bearing beam (4);

the connecting system comprises brackets (2), ear plates (3) and pin shafts (5), the brackets (2) are arranged on two sides of a bearing beam (4), the ear plates (3) are embedded into the brackets (2), shear nails (6) used for increasing the shear strength of the cross sections of the brackets are arranged between the ear plates (3) and the brackets (2), and the track beam (1) is connected with the brackets (2) through the ear plates (3) and the pin shafts (5); and

the track system comprises a track beam (1), wherein a vehicle is suspended below the track beam (1) and is connected with a bearing system through a connecting system.

2. The large-span suspended rail transit bridge according to claim 1, characterized in that the load-bearing beam (4) is a prestressed concrete continuous beam or a continuous rigid frame.

Images