Testing Methods of Seamless Tracks

In recent years,seamless tracks have become the common trend and their testing has been the focus of attention.The paper briefly introduces the significance of the testing of seamless tracks while in operation,the testing methods and principles at a fixed rail temperature,and taking as an example the setting of the displacement observation piles of the Beijing-Tianjin intercity railway and the Beijing-Shanghai high-speed railway,introduces the application of the piles in high-speed railways and explains the computation of fixed rail temperature with the help of the piles with examples.