Experimental Studies of Track Strength Using Different Types of Fastening

Abstract

Experimental and theoretical researches of influence of a condition of a profile of asurface of rolling of a wheel pair on level of horizontal cross forces of interaction between elementsof a rail track and a rolling stock in operation on the railways of Ukraine are carried out. We havefurther developed approaches to modeling the effect of different types of fasteners on track stability,as the rigidity of the rail thread is directly related to the design of subrail supports and rail fasteners.The main task of experimental research was to establish the actual state of the elements ofintermediate fasteners and reinforced concrete sleepers, finding the maximum resistance of the railto longitudinal movement, which are provided by fasteners under different operating conditions.Experimental studies of the elastic characteristics of the horizontal longitudinal characteristics of therigidity of rail threads were performed, the studies were performed at different times of the year.Experimental studies of transverse deformations of rail threads on the head and sole of the rails madeit possible to determine the exact characteristics of the horizontal lateral stiffness of rail threads forrails type P65 with different types of fasteners. The main experimental studies were conducted on aseamless track within the main sections of the railway. The elements of the intermediate rail fasteningduring operation are subjected to constant dynamic impact in the process of which there are residualdeformations.Based on the obtained data, calculations were performed to determine the horizontal lateralmodulus of elasticity of the railway track, to determine the longitudinal and transverse stability ofrail threads depending on the type of fastening. The obtained experimental and theoretical resultsallow to evaluate the force interaction of the rail track with the rolling stock.