軌道沉降預測使用Multiprogramming-BaTrack
Numerical modelling of ground-borne vibration when a train passing.
The left figure shows the wave propagation when the train speed approaches the critical speed, which is the crucial design factor for the railway line. Large ground deflection occurs, which may cause track or vehicle damage, when the train speed close to the critical speed. Furthermore, Wave propagating further than the results from lower speed train (right figure) and this may interrupt the nearby building.
Ground borne vibration when train speed approaches the critical speed
Ground borne vibration for lower speed trains
鐵路道岔實時狀態監測系統
A parametric environment was developed combining Abaqus, Python, and Fortran, to account for analysis, model generation, and nonlinear elasto-plastic material. The model can be used to investigate the design of track support stiffness and to predict track quality and voiding sleepers. The model was calibrated using tri-axial test data and further validated against full-track lab measurement.
The present system/technology combines numerical simulation, measurement and diagnose algorithm technologies that provides the holistic condition monitoring system for railway switches and crossings (S&Cs). A variety of sensors have been chosen and placed at the most effective locations to detect specific S&C faults.
