International Journal of Big Data Intelligent Technology, 2024, 5(1); doi: 10.38007/IJBDIT.2024.050117.
Jun Gao, Hongxiong Lu, Zhongxi Guo, Zhiguo Liu, Chan Mei, Jian Zhang
Wuhan University of Technology, Wuhan 430017, Hubei, China
Wujiu Railway Passenger Dedicated Line Hubei Co., Ltd., Wuhan 430012, Hubei, China
Inner Mongolia Autonomous Region Department of Transportation, Hohhot 010020, Inner Mongolia, China
Wuhan-Guangzhou Railway Passenger Dedicated Line Co Ltd., Wuhan 430012, Hubei, China
Laying ballastless tracks on long-span bridges has always been a technical challenge in bridge and track engineering. Tall piers and long spans a series of characteristics such as large structural weight, large deformation, and large beam end rotation angles. Under the action of train loads, temperature loads, creep, other loads, the deformation is complex, making it difficult to maintain track smoothness. With the continuous in-depth research and development of ballastless track technology on-span bridges, laying ballastless tracks on long-span bridges and achieving high-speed operation has become the main technical breakthrough. The 60m chord measurement method the evaluation method of the vertical deformation radius of the mid-span vertical curve are used to assess the smoothness of the track surface, and the applicability of layingastless tracks on a 420m double-track steel truss reinforced PC box girder cable-stayed bridge is concluded. This has important reference significance the study of related engineering problems.
420m double-track steel truss; cable-stayed bridge; ballastless track; vertical curvature radius; line shape evaluation
Jun Gao, Hongxiong Lu, Zhongxi Guo, Zhiguo Liu, Chan Mei, Jian Zhang. Research on the Evaluation of Vertical Curvature Line Shape for Ballastless Track Laying on a 420m Extra-large Span Double-track Truss Strengthened PC Box Girder Cable-stayed Bridge. International Journal of Big Data Intelligent Technology (2024), Vol. 5, Issue 1: 161-171. https://doi.org/10.38007/IJBDIT.2024.050117.
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