High-speed Railway Ballastless Track Research Articles

Application of Ballastless Track CP III Control Network Measure Method in the Building of High Speed Railway

In the process of building the ballastless track of the high speed railway from Wuhan to Guangzhou, the measuring method of the CPⅢ control network has played an extremely critical role. In this article, the form layout, measuring method, precision requirements and some other contents of the high speed railway ballastless track CP Ⅲ have been proposed. It has been proved that this control network has reliable technology basis and meets the construction requirements, which is available for other similar engineering.

Advances in design theories of high-speed railway ballastless tracks

The design theories of the ballastless track in the world are reviewed in comparison with the innovative research achievements of high-speed railway ballastless track in China. The calculation methods and parameters concerning train load, thermal effect, and foundation deformation of high-speed railway ballastless track, together with the structural design methods arc summarized. Finally, some suggestions on the future work arc provided.

Prediction on Red Clay Foundation Settlement of Ballastless Track of High-Speed Railway

Prediction on red clay foundation settlement was put forward, using hyperbola method, exponential curve method and Hushino method, based on field data. Furthermore, Verhulst model, Gompertz model, Logistic model and Weibull curve were adopted in foundation settlement prediction. Subsequently, variable weight combination method and optimized combination model was studied to get more accurate prediction results. Finally, red clay foundation prediction of high speed railway was proposed.