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| Design and Study of the Station Rail Beam and Platform Beam Integrated Structure |
| PENG Hua-chun, ZHAO Zhi-jun, DU Zhen-hua, ZHANG Lu |
China Railway Siyuan Survey and Design Group Co. Ltd，Wuhan, Hubei 430063, China
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Abstract Research purposes：Currently the rail beam and the platform beam of the urban rail transit elevated station are designed as two separate structure.This structure occupies larger space and causes the station scale larger. It is not conducive to save project cost and to the landscape design. At the same time when there is an earthquake, because there is no connection between the rail beam and the platform beam, it is prone to collide, resulting in a rail beam and a platform beam damaging or even collapsing. In order to solve these problems, this paper proposes a new kind of rail beam and platform beam integrated structure, on the premise of meeting the station using function, the appearance and stress of the structure is optimized.
Research conclusions：（1）The results show that, all the indexes of the structure can meet the specification requirements.It is a safe and reliable structure. （2）The prestressed steel can be optimized, and opening range side girder and middle girder can adopt different specifications, making the two stress and deformation basically the same. （3）Opening range side beam is T beam that the torsional rigidity of cross section is small. The side girder stress can be improved by further optimization of section. （4）The slab thickness should not be too small, so as to avoid local deformation or local vibration impact on smooth of track structure, thereby affecting driving safety and comfort.（5）The research results can be widely used in elevated rail transit station.
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