Closely arranged frame bridge structure of high speed railway switch area

Abstract

The invention belongs to the technical field of bridge structures, and particularly relates to a closely arranged frame bridge structure of a high speed railway switch area. The bridge structure comprises a base plate located on a foundation, a side wall and a train walking roof. A plurality of closely arranged frames are formed by the base plate, the side wall and the train walking roof, the aperture of the frames which are perpendicular to the switch area ranges from 8 m to10-m, and a gap among the frames in the train driving direction is 2cm. The closely arranged frame bridge structure of the high speed railway switch area has the advantages that stress is clear, the structure is reasonable and the economy is good, requirements on a bridge longitudinal stiffness, a transverse stiffness and a displacement of the high speed railway switch are met, construction is convenient and fast, the construction process can move fast, service life of the structure is assured, traffic of a road under the frames can be also assured, the frames without interchange can be developed for business purposes, and that is to say, one bridge has three functions.

Description

technical field [0001] The invention belongs to the technical field of bridge structures, and in particular relates to a close-arranged frame bridge structure in a turnout area of ​​a high-speed railway. Background technique [0002] At present, the design and construction of bridges in the turnout area of ​​high-speed railways, especially in the throat area, has always been a matter of concern. In the throat area of ​​railway stations, it is generally set as a roadbed, and there is no precedent for setting bridges in the throat area. However, in the turnout area (single set of turnouts), the bridge generally adopts a continuous beam structure due to the requirements of the seamless turnout of the high-speed railway on the bridge structure. It cannot be installed on a joint beam at the same time, and the turnout needs to be opened at a certain distance, resulting in an increase in the height and length of the bridge. In addition, due to the design and construction difficult...

AI Technical Summary

Problems solved by technology

However, in the turnout area (single set of turnouts), the bridge generally adopts a continuous beam structure due to the requirements of the seamless turnout of the high-speed railway on the bridge structure. It cannot be installed on a joint beam at the same time, and the turnout needs to be opened at a certain distance, resulting in an increase in the height and length of the bridge. In addition, due to the design and construction of the bridge in the turnout area, it is difficult to fully guarantee the construction quality, and the construction period is long, which often affects the construction quality. Project duration and project investment

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