34 articles in this issue
O. V. Andrieiev,V. V. Biezrukov,V. I. Havryliuk,V. Ya. Kiziakov
The article considers a possibility of controlling and measuring the parameters of railway automatics and communication lines on the basis of an identification method, provides a mathematical substantiation of the spectral analysis method, investigates th... see more
O. V. Andrieievskikh
The paper proposes a computer method of modelling automatic devices, based on the memory elements with essential nonlinear delays, both with and without fixation of influence. In the procedure of memory elements modelling, performed on electromagnetic dev... see more
T. M. Serdiuk,V. I. Havryliuk
In this paper the results of elaboration of automated microprocessor system are given. This system allows us to control and measured the parameters of code current of automatic locomotive signaling system and to define spectral composition of traction cur... see more
Jerzy Mikulski,Jakub Mlynczak
In work the researches of current characteristics of points drive have been executed. As a result of analysis these characteristics a concept of remote diagnostics of points drive has been offered, a model of diagnostic equipment for measurement of settin... see more
M. M. Biliaiev,Yu. M. Chyhrynska,R. V. Varchenko
A mathematical model to simulate atmosphere and land surface pollution in movement of a diesel locomotive has been developed. The model is based on a 3D equation of the impurity transfer. For numeric calculation the implicit difference alternatively-trian... see more
Yu. V. Zielienko,V. M. Plakhotnik
The article considers the environmental consequences of transport accidents with oil products, which take place in Ukraine. A considerable influence of soil composition, the degree of its compaction, and also the soil examination procedure onto migration ... see more
V. I. Borshchov,M. K. Zhurbenko,A. P. Triakin
The work is devoted to experimental determination of the values of cross forces in the rails of track of sectional structures type 690/7K at movement of trains on these structures.
M. B. Kurhan
The proposed new approach to division of railway sections into the optimization objects allows to use nonadditive criteria, depending on the task set up.
I. Povilaitene,K. Sakalauskas,I. Podahelis
The article provides data on the influence of railway track geometric parameters in curves on lateral wear of the external rail and proposes a method of calculating the additional costs of maintenance and reconstruction of small and medium radius curves.
A. A. Bosov,V. M. Ilman
This article offers you the analysis of dynamics of moving rolling element along horizontal deforming base. For rolling, like O. Reinolds, was found the conditions of steady rolling of element and was demonstrated, that the rolling without towing and slip... see more
A. A. Bosov,H. M. Kodola
The authors have performed an analysis of selection of a mathematical model, describing freight operations on separate railways of Ukraine and on Ukrzaliznytsia (all Ukrainian railways) as a whole.
A. A. Bosov,N. A. Mukhina
The problem of structural modelling with the help of specially organized regression analysis has been considered.
H. V. Yevdomakha,Yu. M. Ivchenko,V. V. Skalozub,K. H. Zhelieznov,V. A. Litvinov,O. P. Ivanov
The authors propose models and calculation methods for optimal modes of running emu trains, taking into account the random character of catenary voltages and the conditions of dependence of electric power price upon the time of day. The paper suggests cri... see more
N. I. Poslaiko
The paper concerns a queuing-type mass service system, being disturbed by a non-stationary, non-ordinary Poisson flow of requests, when the intensity of serving is a function on time. On the basis of numerical methods, a technique of calculating the optim... see more
H. M. Kirpa
In article foreign norms of designing of high-speed railways and influence of the minimal radius of a curve on cost indexes of a line are examined. Recommendations on application of those or other norms are given.
B. P. Pikh,I. P. Korzhenevych,M. B. Kurhan
The article provides the analysis of track and the results of dynamic tests of cars with extensible wheelsets on the railway direction Kyiv–Lviv.
V. D. Danovych,V. V. Rybkin,O. H. Redemeistr,N. V. Khalipova,A. P. Triakin
The paper considers the issues of determining the rates of stability against a wheel flange climb onto the railhead for various models of empty four-axle freight cars with bogie series 18-100. The influence of the car parameters on the period of probable ... see more
V. I. Borshchov
The paper considers the issues, related to creation of automated maintenance system of artificial structures on a separately taken railway. A probable structure of the system is described, its operational modes are considered. The aggregative flow-chart o... see more
V. I. Borshchov,M. K. Zhurbenko,B. D. Sukhorukov
The article considers the results of dynamic tests of sectional structures, with 110m rated flight length, manufactured under standard project 690 7 ? .
V. H. Viktorov,Ye. O. Danilov,T. P. Rieshetniak
An estimation of factors, influencing structural compatibility of old and new concretes, has been performed by authors of the paper. They have also attempted to make a review and select the instruments of finite element analysis, with the help of which it... see more
V. Ye. Volkova
The methods and results of the numerical modelling, qualities and peculiarities of the non-linear mechanical system biharmonic forced oscillations, described by the non-linear differential equation. are presented in the paper. The method of numerical inte... see more
S. A. Hryshechkin,D. I. Diadiushkin
The results of the experiments on ultrasonic monitoring of structure-forming processes in clayey grounds are considered in the paper. An effect of structure-forming processes on propagation velocity of longitudinal waves has been demonstrated. The approxi... see more
B. H. Klochko,O. O. Kushvid
The article presents the results of experimental and theoretical studies of the conditions of concrete destruction in the structures, exposed to the influence of aggressive media. The possible mechanisms of micro-crack formation, depending on the structur... see more
O. K. Buhaiev,S. V. Tsepak,O. L. Tiutkin
The work represents the fundamentals of ground bed reinforced technology, as a mode of its work at resilient stage. Examples for its realisation are provided. The necessity of improvement of reinforcement methods has been substantiated; recommendations fo... see more
T. V. Mamonova
The article presents the results of experimental and theoretical study of structure-forming peculiarities in alkylresorcin-based filled-in composites. A high efficiency of the mortars for construction of anti-filtration screens in facilities, operated in ... see more
V. V. Marochka
There are many methods of damping the oscillations in bridge girders with the use of hydraulic dampers. The offered paper is devoted to more careful calculation of the dampers themselves, in particular – their basic working characteristics. Recommendation... see more
V. I. Petrenko,V. D. Petrenko,O. L. Tiutkin
The modernization of account process by a finite elements method with the help of reception of «filtering» is resulted in submitted article. The algorithm and the kinds of «filters» are given which allow receiving more extensive and precisely built inform... see more
O. M. Pshinko,E. V. Hromova
The article presents the fundamentals of development and practical studies of the properties of concretes, based on an activated astringent, for the repair and protection of the concretes of transport structures in the underwater zone, with a view of prol... see more
O. M. Pshinko,A. V. Krasniuk,Ye. S. Kharchenko
The article presents the results of research on determination of rheological and strength characteristics of polymer mortars, based on carbamide resins. The models have been obtained, reflecting rheological and strengths properties of the material. The op... see more
M. M. Rudenko,D. V. Rudenko,V. V. Punahin
The article presents the results of experimental and theoretic research of the influence of gypsum upon processes of structure formation in the activated cement matrix of a concrete, and demonstrates a possibility of obtaining the concretes with rated per... see more
K. I. Soldatov,H. S. Zhelezniak,K. V. Hurzhii
The article considers the questions of defining the actual rigidity of bridge supports and arising in some cases necessity of replacement the absolutely rigid supports for resilient ones in calculation of the own frequencies of bridge designs.
K. Y. Soldatov,A. H. Kriuk
The article, based on the example of an existing metal arch bridge in Zaporozhye, considers application of the «resilient models» technique in calculations of oscillations and stability of such structures. The own free vertical oscillations of the arch sp... see more
K. I. Soldatov,V. I. Madatov
Based on the results of examination of a large number of bridges, the article proposes a completely new approach to designing, construction, maintenance and service terms of periphery bridges.
O. L. Tiutkin,I. M. Petrenko
The article provides the analysis of optimization concept of constructive elements in three-vaulted deep contour underground stations. Statement of the optimization task has been performed; its solution and algorithm of its realization have been presented... see more