Boyko V. Influence of wear of point works on reinforce-concreted beams on dynamics of rai!s and rolling-stocks interactions

Object of research - modern designs point frog switches into ferro-concrete bars. Methods of researches - a settlement-theoretical method of interaction process modeling of a track and a rolling stock at movement on point frog with application of mathematical approximation on the basis of software products for the COMPUTER; natural researches from formation of deterioration and vertical inequalities on a surface rolling point frog switches into ferro-concrete bars in various service conditions. Practical value: analytical dependences of wear resistance point frog switches of type Р65 of mark 1/11 with ferro-concrete bars depending on a complex of operational conditions are established; new values of standard service life of arrows and point frog switches of type Р65 of marks of 1/11 and 1/9 into ferro-concrete bars depending on conditions of power congestion of a track are developed; empirical dependences between vertical deterioration, parameters of inequalities on a surface rolling point frog on ferro-concrete bars and forces of interaction of wheels and a track are received; the results received in the dissertation have been used in research workings out of chair "Reconstruction and operation of railways and constructions" SETTU both branch "the Way and traveling constructions" ESC Ukrzaliznitsi. Scientific novelty: experimental researches are spent and features of formation of vertical deterioration on point frog switches into ferro-concrete bars of type Р65 of mark of 1/11 and 1/9 are defined; for the first time for conditions of the Ukrainian railways dependences of wear resistance point frog on ferro-concrete bars from a complex of operational conditions are received and standard service life of arrows and point frog switches for different categories track are established; features of formation of vertical inequalities on a surface rolling point frog are defined; analytical dependences of sizes of dynamic forces of interaction on a full complex of service conditions and parameters of vertical inequalities on point frog for transfers Р65 of 1/11 prisoners into ferro-concrete bars that allows to establish admissible speeds of movement of trains are received. Introduction degree - the received specifications of service life switches into ferro-concrete bars for different service conditions have found introduction in 2 standard technical documentation of Ukrzaliznitsi: "Position about standard service life switches in different operational conditions", the order on introduction in action from 17/06/2003 № 199-ЦЗ and "Warranty periods of service and a condition of maintenance of guarantee operation of metal elements switches", the order on introduction in action from 20/12/2006 № 512-Ц.