Long-span combined bridge structure of straddle type monorail and arranging method thereof in curve section

Abstract

The invention discloses a large-span combined bridge structure of a straddle type monorail and a arranging method thereof in a curve section, and belongs to the technical field of the straddle type monorails. A steel box girder and a steel rail track girder which are suitable for the straddle type monorail to be applied in a large-span environment are arranged, and the steel rail track girder is fixedly connected to the top of the steel box girder to form an integral stress structure, so that the steel rail track girder and the steel box girder can be subjected to cooperative stress, and the integral height of the large-span combined bridge structure is reduced while meeting the large-span application requirement. The large-span combined bridge structure of the straddle-type monorail is simple in structure and simple and convenient to arrange, can effectively meet the application requirement of the straddle-type monorail in a large-span application environment, greatly reduces the overall height of the large-span combined bridge structure, reduces the construction cost of the large-span combined bridge structure, improves the design flexibility of a corresponding track structure and station structure, improves the urban landscape when the straddle-type monorail is applied, and has good application prospect and popularization value.

Description

technical field [0001] The invention belongs to the related technical field of straddle-type monorails, and particularly relates to a large-span composite bridge structure suitable for straddle-type monorails and a method for setting it in a curved section. Background technique [0002] Straddle-type monorail is a type of urban rail transit. It often has the advantages of low noise, strong adaptability, small footprint, low construction cost, and short construction period. The construction period of straddle-type monorail is often less than that of subway construction. Half of the cycle, and the cost of construction is only about one-third of that of the subway, but it belongs to the rail transit system with medium capacity, which can greatly improve urban traffic problems. Therefore, the straddle-type monorail has been applied to a certain extent in some cities in my country, and has begun to be planned and constructed in more and more cities. [0003] There is a big diffe...

AI Technical Summary

Problems solved by technology

Although the above method can meet the setting needs of straddle-type monorail long-span composite bridge structure to a certain extent, it also has certain defects and limitations, which are mainly reflected in: because the track girder in the existing long-span composite bridge structure adopts Simply supported beams need to be equipped with pad stones, supports and other structures, so that after the track beams are installed, the rail surface height is higher, the overall structure height is larger, the cost is higher, and the urban landscape is poor; The track girder in the "beam" structure often does not participate in the force bearing, and almost all of its force load is transmitted from the support to the box girder below. Therefore, in order to ensure that the long-span composite bridge structure meets the force requirements, the beam height of the box girder is often higher High, resulting in a further increase in the overall height of the long-span composite bridge structure, the increase in the height of the track girder system not only increases the cost of construction, affects the urban landscape, but also affects the structural design of the track and station docked with the long-span composite bridge structure, affecting the span monorail track, station design flexibility

In view of this, the existing straddle monorail long-span composite bridge structure has certain limitations and cannot fully meet the design and operation requirements of straddle monorail

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