Prestress assembled rail beam for stations and construction method thereof

Abstract

The invention provides a prestress assembled rail beam for stations and a construction method thereof. The prestress assembled rail beam comprises a rail beam main body; the rail beam main body comprises a flange, and two rib beams vertically connected to the flange; the two rib beams are oppositely arranged to form the rail beam main body with a double-T type cross section; and steel strands arearranged in the two longitudinal beams in a longitudinal penetrating mode. The prestress assembled rail beam is reasonable in structure and convenient to construct, and solves the defects in traditional bridge construction combination and bridge construction separation systems. Compared with a cast-in-place reinforced concrete structure, the structure height can be reduced, and the station hall floor escalator lifting height is reduced; and compared with a rail beam structure with bridge construction separation, a bracket can be not used, so that the maintenance and replacement difficulty of the bracket after operation of the stations is solved. The invention can be widely applied to rail beam structures of the stations.

Description

technical field [0001] The invention belongs to the technical field of rail transit, and in particular relates to a prestressed assembled rail beam for a station and a construction method thereof. Background technique [0002] With the rapid development of cities, rail transit has become the preferred means of transportation for people to travel. In order to meet the planning needs of urban development, rail transit can usually adopt the form of underground laying, ground laying, elevated laying and other forms. When the elevated line is laid, the station adopts the elevated station. [0003] In the prior art, elevated stations mainly have three structural systems. 1. Track girders separated from bridge construction, which belong to the bridge structure system. The track girders can be simply supported beams, continuous beams, and continuous rigid frame systems. , the lifting height of the escalator from the station hall to the platform floor is increased. For simply suppor...

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Problems solved by technology

[0003] In the prior art, elevated stations mainly have three structural systems. 1. Track girders separated from bridge construction, which belong to the bridge structure system. The track girders can be simply supported beams, continuous beams, and continuous rigid frame systems. , the lifting height of the escalator from the station hall to the platform floor is increased. For simply supported beams and continuous beam systems, supports need to be installed. After the station is in operation, there is basically no room for maintenance and replacement of the supports. This separation is due to the impact on the building layout of the station. Larger, less used in rail transit; 2. The frame structure of track beams and station structures, this system is more convenient for building layout, and the structure height is small, and this structure is often used in rail transit; 3. Bridge The combination of the construction part is between the above two systems, mainly the track beams are set independently and supported on the frame structure of the station. Similarly, the track beams can be simply supported beams or continuous beams, both of which need to be equipped with supports, and the height of the structure is high. The lifting height of the escalator from the station hall to the platform floor is increased, and there is basically no room for maintenance and replacement of the support after the station is in operation; the traditional cast-in-place reinforced concrete frame structure, because the track beam has to bear the train load, the structural height is often high, and the station hall The height of the floor should be increased, and the lifting height of the escalator from the station hall to the platform floor should be increased

The cast-in-place method is used for construction, and the concrete needs to be manually supported after the formwork is poured, which consumes man-hours and manpower. Different construction personnel have different construction levels, and the construction quality is difficult to guarantee

The quality and appearance of cast-in-place concrete are difficult to guarantee

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