Vitolberg V. Prediction of the service life of concrete sleepers type SB 3-0 in a non-public railway

The object - the processes of concrete sleepers type SB 3-0; goal - solution scientific and technical problems of predicting the service life of concrete sleepers type SB 3-0 in operation of uncommon use railways; methods - for determine the interaction forces of the rolling stock as on the path general and on individual sleepers in the thesis used methods of theoretical and structural mechanics using spatial models. During the calculation and analysis of the stress state of sleepers SB 3-0 used the finite element method. For predicting service life of the sleeper type SB 3-0 in a uncommon use railways and scope of application used the methods of reliability theory; novelty - defined spatial rigidity of the rail supports for sleepers Sat 3-0 and bonding KPP-5 considering the level the load acting on them, also installed according to changes in these parameters during operation. Determine the level of vertical, horizontal transverse and horizontal longitudinal forces acting on SB 3-0 sleepers during operating special and specialized rolling stock uncommon use railways. The influence of the speed of movement, the radii of the curves, the presence of vertical and horizontal cross road irregularities; Investigate stress state of the sleepers Sat 3-0 in uncommon use railways, also investigate influence of design features of special and specialized rolling stock and the characteristics of uncommon use ways; made prognostic evaluation of the service life sleepers type SB 3-0 and recommendations for scope of application in the conditions of uncommon use ways; results - revealed reasonable and rational scope of application of concrete sleepers type SB 3-0 with binding type KPP-5 on sections railway uncommon use lines; sphere of application - the uncommon use railroad tracks, academic and educational institutions.