ELECTRICAL AND VIBRATION IMPACTS REDUCTION FROM RAIL TRANSPORT

Annotation. Purpose. Development of a constructive technological solution without a ballast construction of a tram tracks with increased indices of vibration isolation and electrical insulation properties and investigations of electrical resistance between tram rails and surrounding structures, as well as vibration on surrounding structures. Methodology. The object of the presented investigations is the construction of tram tracks with rails insulated from the under-rail base with polyurethane composite (ERS system). The electrical resistance in the rail-plate circuit is measured every 10 meters along the length of the test section. To measure the resistance a Sanwa PC510 digital multimeter was used. Copper-sulphate electrode for contact with concrete was used. For measurements of vibration on the surface of a reinforced concrete sub-rail base during the passage of a tram a vibration analyzer was used «Вибран-2.0». Findings. In order to make to reduce vibration of ERS and reduce consumption of the composite, special concrete liners were developed. Investigations of the electrical resistance between tram rails and surrounding structures, as well as vibration on surrounding structures, were carried out. It is established that the electrical resistance of ERS is four times higher and the vibrational effect is much lower than these factors for the conventional track. Originality. A method for measuring the resistance in the rail - plate circuit and measuring vibration on the under-rail base of the ERS tramway system is developed. The results of relevant field studies are obtained. Practical value. The use of developed rail inserts will significantly reduce the cost of the polyurethane composite and reduce vibration fluctuations in the construction of tram tracks through the ERS system. Increasing the resistance of the upper structure of the tramway will provide protection against electro-corrosion its elements, as well as the buildings and structures located along the way.