Vestnik Moskovskogo avtomobilno-dorozhnogo gosudarstvennogo tehnicheskogo universiteta (MADI)» | Number 2(81), June 2025
DESIGN AND CONSTRUCTION OF ROADS, UNDERGROUNDS, AERODROMES, BRIDGES AND TRANSPORT TUNNELS
PLANNING A SECOND-ORDER EXPERIMENT TO SELECT THE OPTIMAL AMOUNT OF BINDER FOR ASPHALT-GRANULATED CONCRETE MIXTURES
Authors:
Vladimir A. Yarmolinskiy – Doctor of Sciences (Technical), professor, professor of the Department of “Construction and operation of motorways” MADI, Moscow, Russia, appolonow.vlad@yandex.ru
Ekaterina S. Budanova – postgraduate MADI, Moscow, Russia; senior lecturer of the Department of “Infrastructure and Transport” YSTU, Yaroslavl, Russia, cat156026@yandex.ru
Abstract
The article discusses the issues of optimizing the compositions of asphalt-granulocrete mixtures in the mathematical planning of a second-order experiment. To increase the efficiency of cold regeneration of road structures, a set of studies was carried out, which made it possible to determine the optimal compositions of asphalt granulocrete, taking into account their reinforcement with a binder. The complex of laboratory studies carried out made it possible to develop a mathematical model of the second order in the form of a polynomial of the second degree, and to establish the influence of cement content on the physico-mechanical characteristics of asphalt granulocrete samples. The mathematical model was tested for adequacy by evaluating the uniformity of variances according to the Kohren G-criterion and the Fisher criterion. The dependence of the tensile strength under indirect stretching of samples of dry and water–saturated groups, as well as the value of water resistance, depending on the consumption of Portland cement and the quantitative ratio of skeletal aggregate - asphalt granulate, was approximated. A graphical representation of the regression dependence of the range of optimal values of the factors ensuring the strength of samples of dry and water-saturated groups in accordance with regulatory requirements is given. Recommendations are given on optimizing the design of asphalt-granulocrete mixtures for use in various types of terrain under humidification conditions.
Keywords: automobile road, service life, cold recycling, mathematical modeling, experimental planning, second degree polynomial, optimal composition, asphalt-granulocrete mixture
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CALCULATION AND DESIGN OF A MODULAR DEMOUNTABLE BRIDGE SPAN SUPERSTRUCTURE MADE OF COR-TEN STEEL
Author:
Roman P. Klimenko – Postgraduate MADI, Moscow, Russia, roman96exe@mail.ru, https://orcid.org/0009-0009-6567-7657
Abstract
The article examines the development and analysis of demountable block bridges constructed from COR-TEN steel (atmospheric corrosion-resistant steel) to ensure compliance with the SP35.13330.2011 standard for design loads. Two design variants are presented: the first is engineered for A14 and N14 load classes (new construction), while the second accommodates A11 and NK-80 loads (major repairs and reconstruction), with both configurations analyzed to verify the stress-strain state of the superstructures. The designs utilize 7-meter modular blocks connected via high-strength bolts, enabling assembly into variable-length spans. This approach enhances construction flexibility while reducing steel consumption. Computational results confirm full adherence to regulatory requirements. The practical relevance of this work lies in demonstrating the viability of such bridges for rapid deployment in time-constrained projects and their potential for reuse. Key advantages include the elimination of on-site welding and the inherent corrosion resistance of Corten steel, which forms a stable patina layer, significantly lowering lifecycle maintenance costs.
Keywords: dismountable modular bridge, weather-resistant steel, finite element method, modular structure, design loads
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GROUND TRANSPORT AND TECHNOLOGICAL MEANS AND COMPLEXES
DYNAMIC CALCULATION OF THE PNEUMATIC ANTI-LOCK BRAKING SYSTEM (ABS) CIRCUIT
Authors:
Mikhail P. Malinovsky – Candidate of Science (Technical), Associate Professor of the Department of Tractors and amphibious vehicles MADI, Moscow, Russia; Chief Specialist FSUE “NAMI”, Moscow, Russia, ntbmadi@gmail.com, https://orcid.org/0000-0001-7812-5653
Evgeny S. Smolko – Postgraduate MADI, assistant of the Department of Tractors and amphibious vehicles MADI, Moscow, Russia; Design Engineer FSUE “NAMI” Moscow, Russia, smolko.evgeny@yandex.ru
Abstract
The anti-lock braking system has been used in commercial vehicles with pneumatic brake drive for almost 45 years. The article examines the historical aspect of the emergence of a pneumatic brake drive with an anti-lock braking system on commercial road trains. A number of foreign and domestic scientists and entire scientific schools have devoted their work to the study of the anti-lock cycle and the dynamics of the pneumatic brake drive. However, there was no methodology for dynamic calculation of the pneumatic modulator of the anti-lock braking system in open sources. The authors set the task of filling this gap in the level of technology and developed a mathematical model that allows calculating the dynamic characteristic of the anti-lock cycle for brake chambers of various sizes. The calculation method is based on the pressure function diagram used in pneumatic automation. The mathematical model developed by the authors made it possible to establish the dependences on the volume of the brake chamber and the length of the connecting hose from the pressure modulator to it of such parameters as braking efficiency, wheel locking when the adhesion limit is exceeded, the response time of the circuit and the frequency of the working cycle of the anti-lock system. The obtained results of the study can be useful in calculating the braking system for both newly designed and in-service freight vehicles, including special-purpose road trains.
Keywords: braking efficiency, pneumatic brake system, anti-lock cycle, iterative forecasting method, response time, modulator, pressure function diagram, ABS
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RESEARCH OF THE INFLUENCE OF NEW STRUCTURAL MATERIALS AND MANUFACTURING PROCESSES ON THE RELIABILITY OF THE AUTOMOBILE HUBS
Authors:
Vladimir A. Zorin – Doctor of Sciences (Technical), Professor, MADI, Moscow, Russia, madi-dm@list.ru, https://orcid.org/0000-0001-7392-8318
Bui Van Thanh – Postgraduate, MADI, Moscow, Russia, buithanhmta.2023@gmail.com, https://orcid.org/0009-0000-1050-6695
Abstract
The article presents the results of modeling and analyzing of the influence of structural materials on the strength characteristics and reliability of the hub of the automobile chassis using the SolidWorks software. The possibility of replacing traditional metal materials used in the production of the hub of the automobile with polymer composite materials (PCM) designed with predetermined properties is considered. The results of the research and justification of the possibility are presented manufacturing of an automobile hub from PCM using additive technology methods. During the research, optimization of the technological process of manufacturing the hub of the chassis on a 3D printer was carried out using modern software.
Keywords: polymer composite materials (PCM), automobile hubs, 3D printing, additive technologies, reliability
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TRANSPORT AND TRANSPORT-TECHNOLOGICAL SYSTEMS OF THE COUNTRY, ORGANIZATION OF PRODUCTION IN TRANSPORT
PATTERNS OF DISTRIBUTION OF PASSENGER TRAFFIC CAPACITY ACROSS SECTIONS OF THE URBAN PASSENGER TRANSPORT NETWORK
Author:
Aleksej A. Tsarikov - Candidate of Science (Technical), Associate Professor of the Department of "Design and operation of automobiles" UrSURT, Ekaterinburg, Russia, Zarikof@mail.ru, https://orcid.org/0000-0002-5314-8602
Abstract
The article presents the results of a full-scale survey of public transport passenger flows in cities of Russia and Belarus with populations from 100,000 to 2 million inhabitants. According to the results of these surveys, the highest values of passenger traffic in one direction were revealed during peak hours of the day. Based on the division of sections of the urban transport network by passenger traffic capacity, data on the absolute length of these sections were obtained. The dependences of the relative length of the network on the capacity of passenger traffic are revealed. These dependencies were obtained separately for cities with a population of more than 1 million, from 500 thousand to 1 million, and less than 500 thousand inhabitants. Based on the obtained values of the distribution of the relative length of the network from the capacity of passenger traffic, proposals have been developed for the development of off-street and street modes of transport for cities with different populations.
Keywords: urban passenger transport, passenger traffic, passenger transport network, patterns of passenger traffic distribution
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THE CONCEPT OF INTEGRATED TRAFFIC MANAGEMENT SCHEMES OF THE NEW GENERATION
Authors:
Sultan V. Zhankaziev – Doctor of Sciences (Technical), Professor, Head of Department of “Road traffic management and safety, Intelligent transport systems” MADI, Moscow, Russia, sultanv@mail.ru, https://orcid.org/0000-0001-9833-9376
Maxim V. Gavriluk – Senior lecturer of the department of “Road traffic management and safety, Intelligent transport systems” MADI, Moscow, Russia, poligonmadi@gmail.com
Jahongir B. Agzamov – Postgraduate MADI, Moscow, Russia, agzamovjahongir@mail.ru, https://orcid.org/0000-0001-8547-361
Abstract
This article explores the evolution, current state, and future development of Traffic Management Systems (TMS). Special attention is given to the integration of intelligent transportation systems and digital technologies aimed at improving safety, reducing congestion in the urban road network, and minimizing environmental impact. A next-generation TMS concept is proposed, incorporating adaptive traffic control, predictive traffic flow modeling, and digital monitoring platforms. The developed methodology takes into account territorial characteristics, zoning, classification of transport hubs, and modern traffic management mechanisms. The analysis emphasizes the need to transition from traditional traffic management approaches to intelligent control systems. The implementation of next-generation TMS will improve transport infrastructure efficiency and support its integration into strategic urban development initiatives.
Keywords: Road traffic management, transport infrastructure, intelligent transportation systems, digital technologies, adaptive traffic flow management, sustainable urban mobility development
References
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JUSTIFICATION OF REQUIREMENTS AND CLASSIFICATION OF BUSES FOR TRANSPORTATION ON REQUEST
Authors:
Artem A. Grishin – Acting First Deputy General Director of the State Unitary Enterprise "Mosgortrans", Moscow, Russia, GrishinAA10@transport.mos.ru
Svetlana S. Titova – Senior Lecturer of the Department of "Automobile transportation" MADI, Moscow, Russia, s.titova@madi.ru, https://orcid.org/0009-0009-7393-0923
Mikhail V. Gushchin – undergraduate MADI, Chief Specialist of the Department for the Development of operational sites of the Bus Transport Operation Service of the State Unitary Enterprise "Mosgortrans", Moscow, Russia, mishka.vg@mail.ru
Abstract
In modern conditions of development of transport services, considerable attention is paid to the organization of passenger transportation, especially in the segment of custom transportation, which are becoming increasingly popular. Custom transportation is an important element of the transportation system, providing flexibility and an individual approach to customer needs. In this regard, the issue of substantiating the requirements for vehicles used in this segment, as well as their classification according to various parameters and characteristics, becomes relevant. Effective organization of custom transportation requires careful selection of rolling stock that must meet modern standards of safety, comfort and environmental sustainability. The developed classification system can serve as a useful tool for operators of transport companies when choosing buses for the transportation system on request. This article makes a significant contribution to understanding the requirements for buses for the on-demand transportation system, providing practical recommendations for optimizing the operation of such services. The results of the study can be used by bus manufacturers to create more efficient models, as well as by transport companies when planning the development of custom transportation systems.
Keywords: passenger transportation, custom transportation, transport system, demand-responsive transport, demand for transportation services
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AUTOMOBILE TRANSPORT OPERATION
DIAGNOSING ELECTRO-HYDRAULIC INJECTORS OF A CAR POWER UNIT BASED ON CHANGES IN PRESSURE IN THE FUEL ACCUMULATOR AT THE TIME OF INJECTION
Authors:
Вoris V. Zhuravsky – Associate Professor of the Department of Automotive Transport, SibADI, Omsk, Russia, ra9meo@mail.ru, https://orcid.org/0000-0002-4516-2607
Alexander. P. Zhigadlo – Candidate of Sciences (Technical), Doctor of Sciences (Pedagogical), Professor, rector SibADI, Omsk, Russia, https://orcid.org/0000-0002-8883-3167
Abstract
The purpose of the work described in this article is to assess the possibility of using the results of measuring the pressure in the fuel accumulator during fuel injection to determine the technical condition of the injector control valve. In the article, a mathematical model of the “injector – fuel accumulator” system, taking into account the accepted assumptions, is presented in the form of a system of differential equations. During the modeling, the value of the leakage of the control valve was varied in a certain range. The paper presents graphs of the obtained time dependencies of the parameters of the processes occurring in the injector and fuel accumulator during fuel injection. The values of the maximum rate of pressure change in the fuel accumulator at different time intervals of injector operation are proposed as diagnostic parameters. The graphs of the dependencies of the considered diagnostic parameters and their sensitivity to the structural parameter – the value of the leakage of the shut-off element of the control valve – are presented and analyzed. As a result of the conducted research, the existence of an unambiguous connection between the value of the leakage of the control valve and the rate of change of pressure in the fuel accumulator during fuel injection by the injector was proven. The results obtained in the work allow us to draw a conclusion about the possibility of using the considered diagnostic parameters to monitor the technical condition of injectors.
Keywords: car power unit, battery fuel injection system, electro-hydraulic injector, technical condition, diagnostics
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APPLIED TASKS OF DESCRIBING THE TRANSPORT BEHAVIOR OF THE POPULATION
Authors:
Andrey V. Akhromeshin – Candidate of Sciences (Technical), Associate Professor of the Department of "Transport and Technological Machines and Processes" TulSU, Russia, aakhromeshin@yandex.ru, https://orcid.org/0000-0001-8016-9655
Vladislav A. Pyshnyi – Candidate of Sciences (Technical), Associate Professor of the Department of "Transport and Technological Machines and Processes" TulSU, Russia, vladislav.pyshnyi@mail.ru, https://orcid.org/00000-0003-0380-8147
Abstract
This paper examines the application of the theory of macrosystems to study the transport behavior of the population. An approach to calculating traffic flows and the collective behavior of elements of a transport system from the point of view of a macrosystem approach is described. The description of transport paramacrosystems is given. The applied tasks of the transport behavior of the population are formulated. It also describes a method for setting and solving problems based on the theory of macrosystems, namely from the point of view of describing the so-called paramacrosystems. An approach to the calculation of traffic flows and the collective behavior of the elements of the transport system from the point of view of a macrosystem approach is given. Examples of distributions of elements across a transport system are considered, taking into account a priori information about individual mobility, as well as "splits" of the general traffic flow according to various criteria. At the same time, the description of the impact of the population's transport behavior on the state of the transport system as a whole is carried out by setting up mathematical models based on the collected statistical information, which is of real interest to practitioners of the transport industry for use in matters of traffic management and recommendations for the development of new territories and proposals for the development of the road network of districts and cities.
Keywords: transport behavior, traffic flow, passengers, theory of macrosystems, macrostates, urban public passenger transport
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FORMATION OF A COMPLEX OF OPERATIONAL PROPERTIES OF ROAD TRAINS WITH MODULAR TRAILERS FOR THE TRANSPORTATION OF BULKY AND HEAVY LOADS
Authors:
Victor I. Karagodin – Doctor of Sciences (Technical), Professor of the Department of “Road construction machinery” MADI, Moscow, Russia, bik250248@yandex.ru, https://orcid.org/0009-0005-8220-9928
Vladimir L. Kubyshev – Deputy Chief Engineer of PJSC “Far Eastern Shipping Company”, Moscow, Russia, Kubyshev@bk.ru
Abstract
The article provides an analysis of the complex of operational properties of ground transport and transport-technological means. The conclusion is made about the specifics of the composition, content, indicators and units of measurement of operational properties for machines of various principles of operation, design and application. The task of forming a complex of operational properties of road trains with modular trailers for the transportation of bulky and heavy loads (BHL) is set, the relevance of which is determined by the growing demand for their transportation. The characteristics of BHLs, the need for which arises during the construction of large industrial facilities, are given, and the advantages of supplying assembled technological equipment to enterprises are indicated. The article highlights the world experience in the delivery of BHL by sea and river transport and the special role of their interaction with road transport, which in the conditions of the Russian Federation is often the only mode of transport for such transportation. The reasons for the refusal to use individual transport for each cargo or group of goods and the implementation of the idea of typification, which led to the creation of modular trailers for the transportation of BHL, are motivated. The scheme of interaction of trailers with tractors and escort vehicles is considered. The advantages of the modular principle of the layout of road trains are described. The systematization and classification of the operational properties of road trains with modular trailers for the transportation of BHL is proposed, based on the principle of dominance of transportation safety and ensuring all other properties at a regulated or sufficient level to meet safety requirements. The operational properties of road trains with modular trailers for the transportation of BHL are combined into six systems that have direct and feedback links: safety, functional compliance, reliability, resource consumption, socially significant properties, and economic efficiency. The composition, content, indicators and units of measurement of the operational properties of road trains with modular trailers for the transportation of BHL are determined, taking into account the peculiarities of this type of transportation.
Keywords: operational properties, road trains, modular trailers, bulky and heavy loads, transportation
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EXPERIMENTAL STUDIES OF TRIBOLOGICAL PARAMETERS OF TRANSMISSION LUBRICANT DURING OPERATION OF HYDROMECHANICAL GEARBOXES
Author:
Vitaliy V. Orekhov – postgraduate of the Department of Technical Operation of Vehicles, SPbGASU, St Petersburg, Russia, vitaliy.orekhov_transport@mail.ru, ORCID 0000-0003-1604-6903
Abstract
The article considers the studies of tribological parameters: friction coefficient and wear intensity in the system tribological coupling of liquid friction (TLF) with different degrees of duration of lubricant operation – Shell Spirax S6 ATF ZM oil for hydromechanical transmissions ZF Ecolaif 6AP1700B of city buses on experimental equipment for studying tribological parameters of materials. A full factorial experiment of the object under study was conducted on a 2070 SMT-1 friction machine using the developed experiment planning matrix. A mathematical-statistical method of data processing was used to analyze the obtained output parameters of the experiments and to develop a regression mathematical model that reflects the functional response in the process under study. Mathematical models of the functional physical dependence of changes in the tribological parameters of the lubricant on the duration of operation in the studied friction unit of the ZF Ecolaif 6AP1700B hydraulic friction machine were constructed. A geometric surface is presented that reflects the correlation between independent controlled parameters and the output parameters of the experiment. The reaction surface is also presented, which was obtained on the basis of the developed parametric three-dimensional mathematical model of the studied TLF system.
Keywords: city bus; hydromechanical gearbox; lubricant; full factorial experiment; friction machine; fluid friction tribocouplings; friction coefficient; wear intensity
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LOGISTICS TRANSPORT SYSTEMS
DISTRIBUTION OF CARGO AND TRANSPORT FLOWS IN THE SYSTEM OF CROSS-BORDER CROSSINGS
Author:
Roman G. Korol – Candidate of Sciences (Technical), Associate Professor, Department “Transportation Process Management,” FESTU, Khabarovsk, Russia, kingkhv27@mail.ru
Abstract
In the conditions of the congestion of the Eastern polygon of railways and Pacific ports, shippers reorient cargo flows to automobile transport and land cross-border crossings. When there is an intensive flow of traffic, queues of vehicles form in front of checkpoints, which leads to an increase in delivery times and costs. The purpose of the work described in this article is to form methodological approaches to the distribution of transport and cargo flows in the system of cross-border crossings. The author has developed a simulation program for conducting research. The subject of the study is the technological processes of moving motor vehicles in the system of border checkpoints. The following tasks are being solved in the work: an analysis of the existing situation on the organization of international transportation in the Russian-Chinese direction has been performed, an algorithm for making a decision on redirecting traffic flows in the system of cross-border crossings has been developed, and simulation modeling has been performed. Mathematical research methods were used: statistical, modeling and visualization. The results obtained are aimed at an economic assessment of the distribution of cargo flows between seven automobile cross-border crossings with different technical and operational parameters. The development of practical recommendations based on the method presented in the work will help to balance the workload of the Far Eastern border checkpoints.
Keywords: cross-border crossing, automobile checkpoint, simulation modeling, distribution of traffic flows
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