Settlement Analysis And Control Of The Transition Of The Wuhan-Guangzhou Passenger Line

The rapid development of passenger dedicated line to line the stability of foundation brings new challenges to the line, also under the base portion of the design and construction has brought many new technical problems. Especially in the roadbed and bridge, culvert, tunnel transition section track structure stiffness, and the significant differences exist, easily in transition section of different structures of the settlement of differences, resulting in the transition section of the track irregularity, on high speed driving safety, smooth, comfortable, fast and has great influence.To strictly control the transition section settlement difference, to meet customer pneumatic line operation, smooth ride of the relevant requirements, from design, construction and operation of passenger dedicated line in the whole process, not only on the subgrade section, transition section of the structure corresponding reinforcement measures, are required to have the site to carry out the system structure of the settlement observation, to control the settlement and settlement difference, to ensure the smooth lines.This paper theoretically discusses the transition section settlement of transition section, structure characteristics, settlement deformation principle, and then discusses a variety of transition section of passenger dedicated railway line design and construction process to take corresponding measures, so as to control the settlement difference of transition section, satisfy the passenger dedicated line operation in high speed driving safety and comfort. In this paper, following the "passenger dedicated railway ballastless track laying condition of guide" condition, combined with long-term field and settlement assessment and analysis of practical experience, subsidence forecast analysis and calculation of line opened, meet the conditions, at the same time on Wuhan-Guangzhou Railway operation process of transition section further settlement observation, assessment of transition section is in stable state, and the transition section under operation problems and take corresponding measures and solutions.Finally, combining with the actual observation and prediction of settlement process experience, put forward the settlement observation in the process control need to be improved further and research contents.