METHOD OF DETERMINATION OF LONGITUDINAL-STRESS STATE OF RAIL TRACKS OF CONTINUOUS WELDED RAILS Russian patent published in 2015 - IPC B61K9/08 

FIELD: construction.

SUBSTANCE: invention relates to track facilities, and can be used to measure movements of the rail path sections of the continuous welded rail under action of train load and temperature, and on this basis determination of stress state of the rail tracks. Method of determination of longitudinal-stress sate of rail tracks of continuous welded rails means periodic measurement of temperature of rail track sections with the check marks at their limits, with simultaneous measurement of longitudinal movements, and further determination of longitudinal stresses of sections considering change of their length. Preliminary each check mark is provided with antenna of satellite receiver, and its coordinates are determined as per the signals of satellite navigation system received by the receiver considering corrections from base stations with further coordinated recording in the receiver memory. Then of obtained coordinates of the check points and measured temperature are transmitted and recorded in memory of the complex system of spatial data of railroad transport infrastructure. During measurements by the devices installed on the movable object presence of the mark is determined, its tie-in to the time scale is performed, and its coordinates are determined as per signals of satellite navigation system considering corrections from network of base stations. The received data and data of simultaneously measured temperature of the monitored sections are transmitted and recorded in memory of the complex system of spatial data of railroad infrastructure, in it the coordinates received during preliminary determination are compared with coordinates received during measurements by the movable object devices, and difference determines longitudinal movements, considering them the longitudinal stresses of the monitored sections are determined.

EFFECT: increased measurement accuracy.