METHOD FOR DETERMINATION OF LONGITUDINALLY-STRESSED STATE OF RAIL STRINGS FOR CONTINUOUSLY-WELDED TRACK Russian patent published in 2012 - IPC B61K9/08 

FIELD: transport.

SUBSTANCE: in this method for determination of longitudinally-stressed state of rail strings for continuously-welded track following is performed: periodical measurement of rail string portions temperature, determination of temperature longitudinal stresses of portions with simultaneous determination of longitudinal strains of portions caused by external force impacts or changes in track condition. From this longitudinal stresses of portions between control marks are determined taking into account changes in their length and amount of longitudinal stresses. Additionally, strains within reference portions including several portions of rail strings are determined, correction factor is determined as ratio between sum of distances of rail string portions within reference portion and reference portion length, and actual longitudinal stresses for each portion of rail string are determined with regard to this factor.

EFFECT: higher accuracy of determination of longitudinally-stressed state of rail strings, lower operation and diagnostics costs of continuously-welded track.

2 tbl, 1 dwg