Analysis and simulation of deterioration of coating on catenary steel column along the railway
[Introduction] The coating deterioration of steel column of catenary along the railway line is one of the potential safety hazards. [Method] The exfoliated coating samples from the catenary column were analyzed by using handheld microscope, energy-dispersive spectrometer (EDS), and scanning electron microscope (SEM). A finite element model of the catenary structure was established, and then the stress and strain analysis of the catenary support and the column was carried out. [Result] The maximum strain at the lower support of the catenary column was calculated to be 4.499％. There were many flocculent corrosion products on the inner surfaces of the exfoliated coating samples, but none of iron oxides were formed on their outer surfaces. [Conclusion] The coating on the upper end of the catenary column is prone to cracking and exfoliation, mainly due to the large strain on the top of the steel column of the catenary and the presence of corrosive compounds in the atmospheric environment.
catenarycolumnsteel structurecorrosionstress and strain analysisnumerical simulation
万方数据
维普
