Abstract:AealeulationmethodforthestatiemomentofrailsPliees15presentedbysimplifyingtherail splieesintothestruetureofahingeplustorsionalsprings,and15eomParedwiththeeomparatively aeeuratedoublelaminatedbeammethod,withanermrofabout士10%.Throughmodifyingthe veloeityandthelateralforoeeoeffieients,thequasi一statieealeulationmethodforthedynamiebending stressofrailsplieesforfrozenjoint15proPosedbasedontheealeulationmethodforthedynamie bendingstressofrails.Themethod15validatedbyeomParingtheealeulatedresultsandthedatafrom fieldtest.