Ukrainian Railways Research Articles

MATHEMATICAL MODEL OF THE DAMAGE ANALYSIS OF RAILWAY TRACTION ENERGY SYSTEM

Purpose. The study provides the methods and models development of reducing damages of traction energy systems (TES) at electrified railways of Ukraine. Definition the indicator of preventing damage evaluation TES at electrified railways is necessary. Paper is aimed to search the modern methods and approaches to improve the system of TES monitoring, diagnosis and maintenance. Methodology. To achieve this purpose a study of foreign experience and publications that focus on problem-solving quality of TES using a linguistic approach based on the theory of fuzzy multiple numbers and linguistic variable were done. Findings. In result of research an algorithm to reduce TPS damages which operates under uncertainty was developed. It is found that the solution of this problem is possible by timely detection of actual technical condition of equipment in terms of quality maintenance, diagnostics and update resource of electrical equipment traction substations (TS) power supply TES. The study examined the fuzzy inference scheme, which is based on the use of mechanisms to minimize the area of decision-making. It contributes not only to structural identification in the process of developing a database, but also can significantly improve the efficiency of finding the parameters of fuzzy model, which in turn reduces the efforts that are necessary for the analysis and the design of effective control systems maintenance and repair (M and R) TES. Originality. For the first time the algorithm of reduction the damage of traction energy system of electrified railways of Ukraine was offered. The mathematical model of reduction the damage calculation of TES from TP power equipment failures by improving system maintenance (M and P) was developed. Firstly evaluation index was proposed to prevent the damage of traction energy system. Practical value. The article describes the fuzzy inference scheme, which is based on the use of the mechanism to minimize the area of decision-making and contributes not only to structural identification in the process of developing a database, but also can significantly improve the performance of determining the parameters of fuzzy model. Implementation of this approach comes to the determination of the main stages, features and optimal justification of quantitative and qualitative requirements for system M and R of TS. It will be done with allowable costs for improvements to reduce TPS damage and address the equipment of traction substations in working condition in terms of growth rates and volumes aging (compared to the current speed and volume of updates).

THE EFFECT OF CORRUGATED ELEMENTS THICKNESS ON THE DEFLECTED MODE OF CORRUGATED METAL STRUCTURES

Purpose. The work provides research the deflected mode and calculation the relative deformation of vertical and horizontal diameters of corrugated metal structures (CMS), horizontal ellipse type, and cross section in their interaction with soil backfill depending on the thickness of corrugated metal pipe. Such studies are required for optimal design of CMS, establishing the causes of defects timely, appropriate engineering solutions to improve the bearing capacity of the CMS and reasonable use of funds for their construction or rehabilitation of existing transportation facilities using corrugated metal pipes. Methodology. Stresses and stability calculations of CMS form are conducted using the developed mathematical algorithm in program environment Mathcad 14. In these studies different thickness of corrugated metal pipe were assigned, and further calculations were carried out at the design value of backfill soil compaction degree and magnitude of dynamic loading of railway transport. Findings. From the calculations is determined that the most influence the thickness of the corrugated metal pipe has on the strength in the calculation of the normal stresses and value of the vertical pipe strains. Therefore, the calculated parameters in the design of corrugated metal structures with small filling heights (from 1.2 m to 3 m) above its peak is calculation of the strength by the normal stresses and determination of the vertical deformation of the pipe. Originality. For the first time, calculations of the deflected mode and relative deformations of vertical and horizontal cross-sectional diameters of CMS, horizontal ellipse type in the interaction with soil backfill. The factors complex was taken into account the backfill soil compaction degree, the value of dynamic loading of railway transport and different thickness of corrugated metal pipe. Practical value. The results of the deflected mode of corrugated metal structures such as horizontal ellipse of cross sections can be used by engineers in the bridge probation stations of Railways of Ukraine and Ukravtodor, in the project organizations involved in the design of corrugated metal structures.

DETERMINATION OF DYNAMIC LOADS FROM THE WHEEL ON THE RAIL FOR HIGH-SPEED TRAINS

Purpose. On the basis of theoretical assumptions and experimental studies the paper provides the choice of the factors for the formation of dynamic load on the track of modern rolling stock in the conditions of high-speed. This results in a calculation method of determining a vertical force which acts on the wheels on the rails. Methodology. The current trend of development of transport networks is the introduction to Ukrainian railways speed, and in the future – high-speed, passenger trains. Fundamental structural changes in these trains, and a significant increase in speed results in a need to revise the calculation methods of action of rolling stock on the railway track, the ratio of the standard deviations of various dynamic forces, assess the impact of different factors for different speeds. In the work investigated the change in the dynamic load on the results of experimental measurements. Findings. The dependences of the average and the calculated forces on the speed of modern passenger trains were obtained. Using factor analysis of variance obtained numerical characteristics of the influence of different factors on the value of the vertical force acts on the wheel rail and the degrees of influence of various factors on its deformation were determined. Based on the results of experimental and theoretical research, the necessity of revising the methodology for determining the estimated power for practical calculations the way to strength in terms of passenger trains at high speeds was grounded. Originality. On the basis of theoretical research and analysis of statistical data of experimental measurements it was found that the main factor driving the dynamic vertical force component for modern passenger trains are the vibrations of the «wheel-rail» system or so-called «dynamic wheel passing the rough ways». Practical value. Existing methods of calculating the dynamic component of the vertical forces need such indicators as the reduced mass of the way. The obtained results in the study indicate that a parameter is artificial and can only be used for low speeds at the level of static calculation schemes.

ФІНАНСОВИЙ ЛІЗИНГ ЯК НАЙЕФЕКТИВНІША ФОРМА ЗАЛУЧЕННЯ ІНВЕСТИЦІЙ В ЗАЛІЗНИЧНУ ГАЛУЗЬ

The article noted that the development of the railway industry is largely due to its current technical condition and financial situation. Without the development and implementation of comprehensive modernization and renewal of fixed assets in the near future may fall in transport demand reduction and displacement of other competitors from the market of transport services. That is why in the context of limited investment resources special importance is the problem of finding sources of their formation. The article emphasized the urgency of financing programs update and modernize rail transport assets, the possible options for financing replacement of fixed assets of railways of Ukraine in restructuring the railway transport and emphasized on the efficiency of financial leasing as a source of investment of Ukrzaliznytsia, highlighted its advantages over credit.

ПРОБЛЕМИ ТА ПЕРСПЕКТИВИ ІННОВАЦІЙНОГО РОЗВИТКУ ЗАЛІЗНИЧНОГО ТРАНСПОРТУ

In the article the expediency of realization of innovative development of railway transport of Ukraine, defined problem areas of organization of innovative activities and the prospects of innovative development of railway transport. Determined that the development of the economy, the transport industry needs to change according to the dynamics of demand for transport services. The flexibility, the elasticity of transport, the opportunity to work in different ways, including probabilistic modes, to implement the peak demand for transportation – these are the demands of modern transport systems. Railway transport of Ukraine plays a leading role in the implementation of economic ties. Therefore, innovative developing this transport sector, the government will provide an international public-private partnership, which in turn will stimulate the economy and modernization of production and technical base of rail transport. Thus, with the prospect of development of the Ukrainian Railways, as a sector, will be proportional to the development of other industries. The implementation of sophisticated, high quality new innovation policy in railway transport will increase its competitiveness, efficiency and social significance. And also, will allow to provide high quality transportation services that meet international standards.

TECHNOLOGY OF EFFECTIVE CLEANING AND WAYS DISPOSAL OF WASTE BALLAST RUBBLE IN TRANSPORT CONSTRUCTION

Purpose. The railways of Ukraine there is the problem of efficient ballast cleaning rubble from oils containing substances. Methodology. Analyze the present state of cleaning ballast rubble on the railways of Ukraine. Identify ways to improve the cleaning efficiency and the possibility of recycling the ballast rubble in transport construction. Findings. The usual mechanical cleaning of ballast rubble, which is used in the current contents of the way, do not solve the problem of removing substances from the surface oils containing rubble that promotes adhesion and a decrease in the stiffness of ballast prizm. Originality. An effective way to posttreatment ballast rubble water steam on mobile equipment and its further use in transport construction. Practical value. According to the research and implementation of the development on the railway line will be possible to receive economic benefit from reuse of ballast material, from reducing the complexity, cost and power consumption of the current contents of the railway line, as well as to solve the environmental problem of waste accumulation of loose ballast the material by using ballast fines in transportation construction (making bituminous concrete, bases under the road surface, etc.).

DETERMINATION OF TEMPERATURE STRESSES AND STRAINS IN METAL SPANS BRIDGES

Purpose. For metal bridges topical study of the stress-strain state arising from the effects of variable temperature extremes of the environment, since the last five years rihayutsya observed significant increases ambient temperatures in summer and decrease in winter. Methodology. Using data from experimental measurements of temperaturedistribution on the surface of the beam-honovyh buildings of metal bridges using an analytical model was calculated thermal stresses and deformations tion arising from a given temperature distribution. Findings. Based on the calculated data revealed that statistically undetectable beams having tension level which reaches 30% of the allowable stress. Originality. For the first time were measured distribut temperature on the surface of metal girders bridges and developed a method for determining the temperature , stresses and deformations of the action variable ambient temperatures. Practical value. The analytical method of determining the thermal stresses and strains may be used byengineers of bridges testing station Railways of Ukraine to install and «Ukravtodor» thermo-stressed state beam spans metal bridges.

WAYS OF IMPROVEMENT OF CONTROL THE SYSTEM BY THE STATE OF CULTURE ON THE RAILWAYS OF UKRAINE

In the article the prospects of introduction of automated control the system by the state of culture are considered on the railways of Ukraine and the analysis of oversea experience of application ACE of bridges is executed.

DETERMINATION OF THE OPTIMAL CAPITAL INVESTMENTS TO ENSURE THE SUSTAINABLE DEVELOPMENT OF THE RAILWAY

Purpose. Every year more attention is paid for the theoretical and practical issue of sustainable development of railway transport. But today the mechanisms of financial support of this development are poorly understood. Therefore, the aim of this article is to determine the optimal investment allocation to ensure sustainable development of the railway transport on the example of State Enterprise «Prydniprovsk Railway» and the creation of preconditions for the mathematical model development. Methodology. The ensuring task for sustainable development of railway transport is solved on the basis of the integral indicator of sustainable development effectiveness and defined as the maximization of this criterion. The optimization of measures technological and technical characters are proposed to carry out for increasing values of the integral performance measure components. To the optimization activities of technological nature that enhance the performance criteria belongs: optimization of the number of train and shunting locomotives, optimization of power handling mechanisms at the stations, optimization of routes of train flows. The activities related to the technical nature include: modernization of railways in the direction of their electrification and modernization of the running gear and coupler drawbars of rolling stock, as well as means of separators mechanization at stations to reduce noise impacts on the environment. Findings. The work resulted in the optimal allocation of investments to ensure the sustainable development of railway transportation of State Enterprise «Prydniprovsk Railway». This allows providing such kind of railway development when functioning of State Enterprise «Prydniprovsk Railway» is characterized by a maximum value of the integral indicator of efficiency. Originality. The work was reviewed and the new approach was proposed to determine the optimal allocation of capital investments to ensure sustainable development of the State Enterprise «Prydniprovsk Railway». Practical value. Structural reform of Ukrainian railway transport demands to solve problems to improve the efficiency of the industry in the shortest time. The proposed algorithm of investment allocation provides for such a directorate development, the implementation of which will lead to increase of functioning efficiency of the railway transportation directorate, which in turn will positively affect on the industry as a whole.

INVESTIGATION OF STRESS STATE IN THE ELEMENTS OF RAIL FASTENINGS, TYPE KPP-5 UNDER THE INFLUENCE OF ROLLING STOCK

Purpose. To date, there is a tendency for the implementation of high-speed trains on the territory of the Ukrainian Railways, which requires increasing the strength and stability of the construction of the railway track. At the same time requirements for intermediate rail fastening have increased and widened. It is on trackwork and repair of the rail fastening labor costs during the operation are from 10 to 18%. One of the main types of fastening, which after long operational observations was included in the permanent operation (5 th. km.) is an intermediate fastening, type КПП-5. Data from previous theoretical studies reliably prevented clear science-based answers and results of the rail fastening. Therefore, the aim is to develop a methodology and rationale for the theoretical research work of rail fastening, type КПП-5 with a detailed assessment of the appearance of stress state places in its elements from the effects of rolling stock. Methodology. The basis of study methods of theoretical research work of the intermediate rail fastening, type КПП-5 (with a detailed assessment of the state of stress in its intermediate elements from the effects of the rolling stock) is the theory of finite elements method (FEM). Findings. Using the FEM it was found that one of the main elements of the intermediate rail fastening, which first perceives share of the value of the lateral force transmitted from the effects of rolling stock are elastic type terminals, type КП-5. Analyzing the data set, the bars in the terminal voltages at the inner side of the rail thread 53,1-56% are greater than the stresses on the outside of rail thread. Originality. A mathematical model of railway track with intermediate rail fastening, type КПП-5 under the action of rolling stock for the study of the stress state in the elements of fastening was developed. This mathematical model let take into account the physical and mechanical properties of the test elements and geometrical fixing fastenings as constructive and operational characteristics of the entire rail fastening in general. Practical value. The obtained results in this work of FE simulations allow reflecting and exploring the most likely places of the stress state appearance in the elements of the fastening, type КПП-5, in which damages and defects can be in the future. This in general will affect the operation stability of the railway track as a whole.

Railways Restructuring and Ukrainian Economic Reform

Abstract If the Ukrainian economy is to be successfully restructured going forward, a restructured railway system will have to be part of the picture. This paper begins with a discussion of the crucial role that the Ukrainian railway plays in the Ukrainian economy. We follow with a survey of the world experience with railways restructuring: a large number of countries have already undertaken the task of converting sagging government-owned monopoly railways into more dynamic and competitive transport enterprises, and their experience in very diverse settings may have important lessons to offer. We then examine the current state of rail reform plans in Ukraine. We conclude with discussions of alternative paths forward that seem most likely to be successful in Ukraine, based on both the experience elsewhere and the country’s current situation.

Refining the models of performing service tests of upgraded locomotives

The paper analyzes the situation on updating the existing fleet of locomotives and start-traction rolling stock on the railways of Ukraine being modernized after the extension of its life in terms of reduction in finance industry. Solving the problem of operational tests of the modernized traction rolling stock makes it possible to reduce the cost of their implementation by reducing the range of control parameters and test personnel involved. The survey found that to identify a particular range of operating parameters modernized traction rolling stock which defines the purpose of testing it is necessary to check this list of operating parameters that will meet its objective. To be able to change the accuracy of test results and the value of them it is possible to change the number of control parameters. An improved method of operating tests makes it possible to more quickly perform testing with limited funding opportunities to accumulate funds for the purchase of modern rolling stock.

MODEL OF FEES CALCULATION FOR ACCESS TO TRACK INFRASTRUCTURE FACILITIES

Purpose. The purpose of the article is to develop a one- and two-element model of the fees calculation for the use of track infrastructure of Ukrainian railway transport. Methodology. On the basis of this one can consider that when planning the planned preventive track repair works and the amount of depreciation charges the guiding criterion is not the amount of progress it is the operating life of the track infrastructure facilities. The cost of PPTRW is determined on the basis of the following: the classification track repairs; typical technological processes for track repairs; technology based time standards for PPTRW; costs for the work of people, performing the PPTRW, their hourly wage rates according to the Order 98-Ts; the operating cost of machinery; regulated list; norms of expenditures and costs of materials and products (they have the largest share of the costs for repairs); railway rates; average distances for transportation of materials used during repair; standards of general production expenses and the administrative costs. Findings. The models offered in article allow executing the objective account of expenses in travelling facilities for the purpose of calculation of the proved size of indemnification and necessary size of profit, the sufficient enterprises for effective activity of a travelling infrastructure. Originality. The methodological bases of determination the fees (payments) for the use of track infrastructure on one- and two-element base taking into account the experience of railways in the EC countries and the current transport legislation were grounded. Practical value. The article proposes the one- and two-element models of calculating the fees (payments) for the TIF use, accounting the applicable requirements of European transport legislation, which provides the expense compensation and income formation, sufficient for economic incentives of the efficient operation of the TIE of Ukrainian railway transport.

STUDY OF THE MANUAL POWER EQUIPMENT OF TRACTION ELECTRIFICATION SYSTEM OF THE RAILWAYS

Purpose. Investigation of the operation of power equipment of traction substations (TS) of Ukrainian electrified railways. The search of the new modern methods and approaches improved monitoring, diagnostics and maintenance of power equipment TS during operation to maintain the required level of reliability of the traction power supply of electrified railway and limit the power equipment accidents TS. Methodology . The study of changes of a technical condition of TSs ’ equipment over the last 11 years was done for achieving this goal. This research was done for solving problems of power supply railways with high quality on the base of the reports analysis of the management and power supply of Ukrzaliznytsia. Findings. It was found that on the base of the new methods of maintenance is the risk analysis of old equipment or equipment with some defects (rev servicing equipment for the actual technical condition).Reliable performance of power supply devices has significant impact for solving the problem of safety on the railways of Ukraine. Different kinds of accumulated damage are at the first place before of failures of an electric power supply of electrified railway. The study of main causes of violations from 2002 to 2012 year showed that 80% of the reasons disorders normal operation of the traction power supply over the period constitutes next factors. There are damage to the main power equipment TS; power off the grid; overload and surge; and the impact of weather conditions. The primary power equipment failure of TS are constituted about 43%. Relevant constant monitoring, testing and diagnostics of the equipment with the creation and use of micro-processor smart automated monitoring and diagnosis are topical in the current operating conditions. Originality. The new directions for further improvement of maintenance electrified traction substations for electrified railways were considered. Modern strategies and management techniques and maintenance TS electrified railways of Ukraine were proposed at the first time. This methods aren’t covered in the Instructions for maintenance and repair of equipment of traction substations, power points and sectioning electrified railways ’ IT-0024. The basic problems for implementation of these strategies were identified. Practical value. It was established that system outage under tight central planning and management in the new economy does not provide, in many cases, approval and adoption of effective and optimal solutions in organization and carrying out maintenance. It was investigated that a significant portion of electric power equipment of TS even after normative life maintains its performance under the terms. There are allowable stress regimes, timely testing, diagnosis, maintenance, repair and quality of execution; on the other hand the service life of electrical equipment depends on its residual life.

PROBLEMS OF REGULATION TANKS GRIDIRON RAILWAY STATION

Purpose. In the context of reforming the railways of Ukraine topical question remain rational capacity gridiron freight stations in relation to the size of the processed traffic volumes on them, which should be considered in con© Журавель І. Л. 2014 51 junction with the main objectives of the operation of railway transport: meet the needs of customers in the transportation, introduction of modern technologies, and others. The purpose of work is to determine the factors that affect the capacity of gridiron freight stations, research share of private wagons in total loading and the definition of the relationship between the sizes of the existing car fleet and track the development of railways of Ukraine. Methodology. The methods of the theory of organization operating the railways and to techno-economic analysis. Findings. With a slight decrease in the operational length of railways gridiron significantly increased the size of recycled freight car fleet. Continues to increase the ratio of the size of the car fleet of freight cars and the operating length of railways in most of what is most characteristic of the railways with the largest size pickup. Investigated the size of shares of private cars in total for specific cargo loading stations Dnieper and Donetsk railways. The factors affecting the gridiron freight stations. Scientific novelty. Developed a detailed structure of the factors influencing the gridiron freight stations, and determined the ratio between the sizes of the rolling stock and track the development of the railway station. Practical value. Detailing the factors influencing the gridiron freight stations will allow allocating in the analysis of their most significant work and improve the adequacy of simulation work specific freight station.

STUDY AND OPTIMIZATION OF TRANSPORTATION FREIGHT RAIL TRANSPORT

Goal. The existing system of traffic management on the railways of Ukraine practically da is the possibility of introducing modern logistics methods of delivery and reduce the cost of transportation. Need to search for alternative traffic management schemes, which will give an opportunity to increase the competitiveness of rail transport and reduce the cost of transportation of goods. Methods. The proposed method of forming differentiated masses of trains based on the definition of wagon-hours of storage provided reduce regulatory train weight by an amount that depends on the intensity of the wagon at the destination. Results. It was established that in order to reduce the duration of demurrage during the accumulation of more appropriate to use differentiated freight rates for different purposes, as other methods do not always give adequate results. Scientific novelty. The proposed method makes it possible to establish a rational-functional freight trains standards for different directions. Practical significance. The use of differentiated norms weight trains allows to reduce the accumulation of wagons for easy on technical stations, which in turn will affect the duration of the transport from-fold the number of cases of violation of terms of delivery and reduce the cost of transportation

CONTEMPORARY PROSPECTS FOR THE RAILWAY ENGINEERING INDUSTRY IN UKRAINE IN THE VIEW OF ECONOMIC CRISIS

The purpose of the paper is to explore the current state of the railway engineering industry in Ukraine, the prospects of its development, current threats and possibilities; to propose incentives for the railway industry development. Methodology . The research was based on open sources of statistical information which was compared by years in relation to events in political and economic spheres. Data was also received from producers’ web-sites. Analytical economic articles have been also used to obtaine the full scope of information regarding the railway industry in Ukraine. Results of the research showed that today Ukraine had a grea demand for the rolling stock as the current rolling stock is obsolete and 98% of it reached their lifecycle end. Currently Ukraine has six car building plans and two plans for construction of locomotives and they offer a variety of units of the rolling stock. The main customer for all those plants is the State Railway Administration of Ukraine “Ukrzaliznytsya”, that, for recent years, almost had not ordered new rolling stock. The problem is that Ukrzaliznytsya does not have own funds to pay for the rolling stock renewal, and credit funds are almost unachievable due to economic crisis and structural reorganization of the railway operator. That’s why the plants went abroad with their products, and Russia became the main customer abroad. Due to the events of 2013-2015, Russia closed its market for Ukrainian rolling stock by non-issuance of technical certificates for the rolling stock. However, in the period of political and economic instability, together with the recent cancellation of import duties to the EU countries, Ukrainian rolling stock producers have now a real chance to diversify their customers and explore new markets. Practical implications . Thus, to overcome the current difficulties, Ukrainian government has to introduce a special program to renew the rolling stock, to encourage governmental-private enterprise, and the producers should explore new markets as they have products to offer in Europe and other regions. Value/originality . The received data show that the Ukrainian railway industry has perspectives in case of finding new markets for its products. The technical level of the produced rolling stock is on the high level and can be easily improved.

ANALYSIS OF OPERATIONAL PROPERTIES AND COMPOSITION OF GREASES AXLE BOXES WAGONS

It was shown the effect of the issue of axle boxes with roller bearings of wagons at the state of safety Ukrainian railways from 2005 to 2013 due to the deterioration of operational properties of greases.The influence of the operating properties and composition of the grease on the work of axle boxes of rolling stock with different types of roller bearing was analised.Refined and expanded requirements for grease for axle boxes wagons based on the current conditions of their operation.Gives the values of worked and emergency temperatures of axle boxes wagons, the speed of rotation and the speed parameter of bearings, bearing loads and the impact of the process of the wagons, which determine the choice of the correct type of grease. Also shows the influence of the type of grease on the value of the coefficient of friction.The possibility of increasing the parameters of reliability of the axle boxes of rolling stock by proper selection of grease, which has the best operational properties and reduces the cost of maintenance of axle boxes.

METHODOLOGICAL APPROACH TO DETERMINATION OF CERTAIN SUBURBAN PASSENGER TRAIN EFFECTIVENESS

Objective. To develop the method of certain suburban passenger train effectiveness determination. Methodology. To solve such problems there is proposed new method, developed on the base of the marginal revenue concept with application of diagram method. This method will give the possibility to define reasonable areas of suburban trains running for considerable reduction of suburban transportations unprofitableness. Results. On the base of the carried out analysis one may state that in this paper there is developed the method of definition of effectiveness of functioning of certain suburban train that will give the possibility to reduce unprofitableness of the suburban communication at the territory of Ukraine. Scientific novelty . There is improved the methodological approach to determination of optimal areas of suburban trains running at the account of establishment of rational length of route, depending on average passenger travels distance and their average number within the accounting year, that will give the possibility to considerably reduce operational expenditures and to increase transportations effectiveness . Practical relevance. Introduction of mentioned methodology for determination of optimal suburban trains running areas will give the JSC Ukrainian Railway Lines the possibility to considerable reduce the unprofitableness of suburban transportations, and local power authorities at the level of city executive board and oblast – to reduce payments for services of the suburban companies or RPCH.

THE RESULTS OF THE DEFECT PLACES INVESTIGATION OF DONETSK RAILWAY ROAD BED BY GROUND PENETRATING RADAR COMPLEX

Purpose. Defective places definition of road bed at ground penetrating radar is examined. Methodology. For achievement of this goal the experimental research on ground penetrating radar inspection of road bed defective places of the Donetsk Railway, which are caused by a complex of various reasons of geotechnical and constructive character, were conducted. Findings. According to these diagnostic results of road bed on the three districts of the Donetsk Railway is revealed the main causes which lead to the defects appearance, deformities and injuries in it, there is abuse of process parameters and modify its physic mechanical soil properties of natural and technology-related factors. As it is established, the use of ground penetrating radar of series “Losa” on the railways of Ukraine allows searching ballast tank in the body of road bed, defining damp places in soil road bed and foundations, to find arrangement of foreign matter in the soil road bed and work search heterogeneity and places weakening soil. In addition, the use of ground penetrating radar provides rapid detection of defects, deformation and damage of railway track, especially in areas the most dangerous for rolling stock that creates the high level security at the main and auxiliary lines of Ukrzaliznytsia. In conducting the research was justified the high level of reliability and performance with autonomous use of ground penetrating radar. Originality. In modern conditions of defects determination, deformations and damages by traditional methods with application of engineering-geological investigations, it is impossible in connection with their insufficient efficiency. Therefore the using of highly effective methodology of expeditious tool identification of defective places allows reducing significantly the periods of repair of a railway track which is very important for introduction of the highspeed movement on the Ukrainian Railways. Practical value. On the basis of the executed investigations the main actions for defects elimination, deformations and damages which consist in the device of counter dams, the draining sections, the augercast and augured piles are offered.