Bending fatigue behavior of a stranded wire under a constant tensile load for electric railway

초록

In electric railway, a stranded wire, called a messenger wire, under a constant tensile load suspends a contact wire to supply a power to trains. The messenger wire under a constant tensile load is subjected to bending stress due to vibration of the contact wire and can be breakable. A series of bending fatigue tests under a constant tensile load were performed. This paper presents the test facility modifications, test methods and test data analysis. And the bending fatigue behaviour of the stranded wire under a constant tensile load through a analytical method is described.