BRIСS Transport最新文献_第2页

On some mechanical characteristics of the ballast in assessing the stress-strain behaviour of railway tracks 铁路轨道应力-应变特性评定中道砟的一些力学特性

BRIСS Transport Pub Date : 2023-06-28 DOI: 10.46684/2023.2.3

V. I. Smirnov, S. A. Vidyushenkov

{"title":"On some mechanical characteristics of the ballast in assessing the stress-strain behaviour of railway tracks","authors":"V. I. Smirnov, S. A. Vidyushenkov","doi":"10.46684/2023.2.3","DOIUrl":"https://doi.org/10.46684/2023.2.3","url":null,"abstract":" On the basis of recent research, a review has been carried out on the experimental determination of the mechanical parameters of the materials used as ballast material. Considerable attention is given to the well-founded selection of input data for the calculation, i. e. quantitative characteristics of the elastic properties of the materials used to form the ballast layer, which is treated as a continuous medium. It appears that this approach makes it possible to assess correctly the influence of grain (grain size distribution) distribution, ballast layer thickness and material type on the stability of a railway track to vertical and horizontal disturbances. The data of this review show that material properties and particle size have a signifi cant impact on elastic moduli and in finite-element modelling of static strength problems, grain-size distribution and material properties are only taken into account through these moduli. Experimental results show a non-linear dependence of the elastic moduli on the stress behaviour of the ballast prism, which is related to a densifi cation of the medium in compression. However, it is established that, after a suffi ciently large number of loading cycles, the medium can be treated as linearly elastic. In general, the results of the research allow establishing requirements for damping, geometric and granulometric parameters of the ballast prism.","PeriodicalId":441595,"journal":{"name":"BRIСS Transport","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116546097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of financing water protection measures in the field of transport on water quality of water bodies 交通领域融资保水措施对水体水质的影响

BRIСS Transport Pub Date : 2023-06-28 DOI: 10.46684/2023.2.2

N. Chernikov, N. Tvardovskaya, I. Okhremenko

{"title":"Influence of financing water protection measures in the field of transport on water quality of water bodies","authors":"N. Chernikov, N. Tvardovskaya, I. Okhremenko","doi":"10.46684/2023.2.2","DOIUrl":"https://doi.org/10.46684/2023.2.2","url":null,"abstract":" Transport is a major water consumer and source of environmental pollution, including water resources. In order to preserve and improve water quality in water bodies at industrial and transport enterprises, including railway enterprises, water protection measures entailing permanent signifi cant funding are required. The study is aimed to develop a methodology for determining dependence of water quality of the water body on the real financing of water protection measures; theoretical justifi cation of the choice of water quality of the water body from the quality of wastewater (WW) of water users, discharging them into the water body and amount of financing of water protection measures. The solution of the task of determining the best water quality in a water body under limited fi nancing of water protection measures and rational distribution of fi nancial resources between water users, including transport infrastructure objects, is proposed. Financing of water protection measures in Russia is less than abroad and has been decreasing over the last three decades. The limits for pollutant concentrations in pollutant discharges into water bodies and water disposal systems in Russia are often set very strict, sometimes more stringent than those for drinking water, which leads to unjustifi ed spending of investment costs. It is pointed out that at present in Russia market relations in the field of nature and, in particular, water use have not been formed. The basic diffi culties at realization of these relations in our country are designated. When using the proposed methodology, the rational quality of water resources of water users by limiting pollutants and the rational distribution of funds for water protection measures among water users within the limited amount of financing are determined. The extent to which water quality in a water body changes is also determined. The possibility of practical application of the proposed methodology is considered.","PeriodicalId":441595,"journal":{"name":"BRIСS Transport","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122209308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Method for detecting the source of radio interference affecting train radio communication in the band of 2.13 and 2.15 MHz 一种检测2.13和2.15 MHz频段影响列车无线电通信的无线电干扰源的方法

BRIСS Transport Pub Date : 2023-06-28 DOI: 10.46684/2023.2.4

S. Kutsenko, N. I. Rukavishnikov, O. G. Evdokimova, J. Kurbanov

{"title":"Method for detecting the source of radio interference affecting train radio communication in the band of 2.13 and 2.15 MHz","authors":"S. Kutsenko, N. I. Rukavishnikov, O. G. Evdokimova, J. Kurbanov","doi":"10.46684/2023.2.4","DOIUrl":"https://doi.org/10.46684/2023.2.4","url":null,"abstract":" There are many factors that infl uence the process of organising train movements, quality radio communication being one of the most important. The intelligibility of the dispatcher’s commands to the driver is important in deciding what action to take, and in informing the dispatcher of the train situation on a particular section of the track. Sources of radio interference that have an interfering effect on the quality of the train radio signal are natural and artifi cial interference. The sources are mainly low-frequency interference. One of the constant sources of high-frequency emissions that affect stable operation of train radio communications refers to discharges generated in the high-voltage insulation of power lines, including discharges generated in the insulation of overhead wires. Spark discharges, the source of radio interference, occur both on the surface of the insulator (usually called surface partial discharges (SPD)) and inside the insulation (such discharges are called partial discharges (PD)). In the operation of high voltage insulation, those insulators that contain PD and PPD are called defective insulators. PD and PD diagnostics are carried out twice a year by means of a laboratory car. Discharge registration is performed in the visible and ultraviolet range. There are acoustic methods for registering PD and SPD. It is proposed to register discharges in the electromagnetic frequency range. For prompt detection radio interference, it is recommended to place antennas on the laboratory car, and combine measurements with current diagnostics of high-voltage insulation, that will allow increasing reliability of the results received in the course of diagnostics. To increase the accuracy of radio interference source detection, two antennas are considered to be placed on the laboratory car.","PeriodicalId":441595,"journal":{"name":"BRIСS Transport","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123766647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multimodal transport system challenges & prospects in Ethiopia 埃塞俄比亚多式联运系统的挑战与前景

BRIСS Transport Pub Date : 2023-06-28 DOI: 10.46684/2023.2.7

A. Aman

引用次数: 0

Major milestones in the creation and development of BRIC – BRICS 金砖国家诞生和发展的重要里程碑——金砖国家

BRIСS Transport Pub Date : 2023-04-14 DOI: 10.46684/2023.1.1

I. P. Kisеlev

引用次数: 0

Feasibility study of calculation methods for tram track stiffness 有轨电车轨道刚度计算方法可行性研究

BRIСS Transport Pub Date : 2023-04-14 DOI: 10.46684/2023.1.3

E. Dudkin, A. H. Mohsin, N. Sultanov

{"title":"Feasibility study of calculation methods for tram track stiffness","authors":"E. Dudkin, A. H. Mohsin, N. Sultanov","doi":"10.46684/2023.1.3","DOIUrl":"https://doi.org/10.46684/2023.1.3","url":null,"abstract":"Nowadays, design and construction of new urban tramlines require feasibility study of calculation methods for stiffness. A calculation method for tram track stiffness with noise and vibration insulation systems has been developed in this paper. Theoretical analysis of the impact of rail insulation systems on tram-to-slab load transfer has revealed the potential options and factors influencing the choice of a system. The new design method obtained makes it possible to predict the distribution of loads on the load-bearing foundation surface. Different variants of rail/slab load distribution have been determined depending on the mechanical characteristics of rail profiles. Tram track slab stiffness has been calculated for three design models such as rigid surface pavement, bridge structure and foundation slab. The design of the tram track as foundation slab allows calculating slab reinforcement as accurately as possible because the surface pavement takes into account the planned service life and tram flow density in the area under survey.Field experiments have demonstrated a better convergence of theoretical and experimental data when designing the slab as foundation. As a result, a new method for calculating the foundation slab stiffness of a tram track has been proposed taking into account planned service life, tram flow density and other factors.","PeriodicalId":441595,"journal":{"name":"BRIСS Transport","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125398901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Tendencies, expectations of shippers and solutions of operators in the transport market of the Republic of Kazakhstan 哈萨克斯坦共和国运输市场中托运人的趋势、期望和运营商的解决方案

BRIСS Transport Pub Date : 2023-04-14 DOI: 10.46684/2023.1.8

K. K. Kobesov, P. V. Kurenkov, A. Ivanov, M. A. Onufrieva

引用次数: 0

Co-marketing and Cooperation of the Transport and Logistics Complex in a Challenging Economic Environment 在充满挑战的经济环境中运输和物流综合体的联合营销与合作

BRIСS Transport Pub Date : 2023-04-14 DOI: 10.46684/2023.1.9

T. Ksenofontova, O. Gulyaeva

{"title":"Co-marketing and Cooperation of the Transport and Logistics Complex in a Challenging Economic Environment","authors":"T. Ksenofontova, O. Gulyaeva","doi":"10.46684/2023.1.9","DOIUrl":"https://doi.org/10.46684/2023.1.9","url":null,"abstract":"The article deals with the issues of cooperation in the context of increasing sanctions imposed on the Russian Federation transport and logistics complex (TLC).A comprehensive express analysis of the impact of sanctions in different aspects of cooperation has been carried out. The system of anti-crisis measures to reduce the damage from the sanctions imposed on the enterprises of the Russian TLC has been studied.The factors of co-marketing and cooperation in the TLC have been researched as well. The content of the cooperation concept in the TLC has been outlined and the possibility of a targeted and territorial approach stipulated.A sequence of steps for measuring business processes performance and dynamic models of economic development have been worked out. The cooperation framework of TLC enterprises has also been presented. Besides, in order to solve the problems of co-marketing, an algorithm of business process optimization of business entities with respect to different social groups of consumers has been proposed.In the deteriorating economic environment, it is necessary to regulate the system of cooperation in order to increase the TLC customer loyalty. It has been proposed to frame the interaction of TLC business entities on the principle of co-marketing, and to focus on the issue of regional residential community development, both by businesses and by the State.","PeriodicalId":441595,"journal":{"name":"BRIСS Transport","volume":"23 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125782993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Purpose in Life and Uncertainty Tolerance in Transport University Students during the COVID-19 Pandemic 新冠肺炎大流行期间交通大学生的生活目标与不确定性容忍度

BRIСS Transport Pub Date : 2023-04-14 DOI: 10.46684/2023.1.6

E. Yashchenko, E. Sinelnikova, M. E. Shumov

{"title":"Purpose in Life and Uncertainty Tolerance in Transport University Students during the COVID-19 Pandemic","authors":"E. Yashchenko, E. Sinelnikova, M. E. Shumov","doi":"10.46684/2023.1.6","DOIUrl":"https://doi.org/10.46684/2023.1.6","url":null,"abstract":"In a situation of ambiguity and global crisis, uncertainty tolerance, purpose or meaning in life and life values have become important factors of psychological health and adaptability of the Transport University students. The purpose of this study is to survey the levels of students’ uncertainty tolerance, purpose in life and life values.Sixty students of Saint-Petersburg State Transport University aged 18–22 participated in the survey. The following methods were used in the research: Crumbaugh and Maholic’s PIL (Purpose-in-Life Test) adapted by D. Leontyev; V.F. Sopov and L.V. Karpushina’s Morphological Test of Life Values; E.N. Osin’s adaptation of the McLane Uncertainty Tolerance Scale.The Purpose-in-Life Test have revealed average scores; at the same time, high scores have prevailed on the “Locus of Control – Life” scale. The students’ material and spiritual values proved to be in a good balance. The students’ Uncertainty Tolerance turned out to be at an average level, but the “Uncertainty Tolerance” scale have revealed either high-level or low-level scores.Uncertainty tolerance is related to life values in both males and females. A higher purpose in life tends to promote greater psychological adaptability to ambiguous situations and boosts uncertainty tolerance in general. The females’ uncertainty tolerance is connected to spiritual values, maintaining individuality, creativity, and hobbies. The males’ attitude to novelty is linked to their prestige and achievement.According to the survey, the Transport University students have an average level of uncertainty tolerance, purpose in life, and well-balanced material and spiritual values. Purpose in life is related to higher uncertainty tolerance and adaptability to ambiguous situation. There is some gender specific correlation between life values and uncertainty tolerance among males and females. Females’ attitude is more related to spiritual values whereas males are more oriented to social success.","PeriodicalId":441595,"journal":{"name":"BRIСS Transport","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126256551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Management and engineering solutions for railway station development 铁路车站开发的管理和工程解决方案

BRIСS Transport Pub Date : 2023-04-14 DOI: 10.46684/2023.1.5

A. V. Kabanov, O. A. Marshavina

{"title":"Management and engineering solutions for railway station development","authors":"A. V. Kabanov, O. A. Marshavina","doi":"10.46684/2023.1.5","DOIUrl":"https://doi.org/10.46684/2023.1.5","url":null,"abstract":"This paper presents a methodology for construction engineering management of railway station redevelopment. The station working capacity is taken into account and the stages of preliminary and main works are determined. The scope of work to be performed by a building contractor is substantiated to provide an optimal station performance. The volume and scopes of work for specific and complex construction workflows are grouped by the components of the railway marshalling yard.The optimal volume of work of the complex flow F has been determined (as a percentage of the total estimated cost of the facility). The station working capacity Nв has been taken into consideration in correlation with the given conditions of construction or renovation works.The key construction flow management options have been worked out based on the optimal index of construction work sequence, prime cost reduction of construction and installation works (current costs C), and effective capital investments into machines and mechanisms (one-time costs Кf).The proposed methodology for construction management and engineering solutions is oriented to general contracting and subcontracting companies of the railway construction sector. This methodology is intended to lower the prime cost of construction and installation works and to reduce the time of construction and redevelopment of railway stations.","PeriodicalId":441595,"journal":{"name":"BRIСS Transport","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115397534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0