Stability of the Supporting Subgrade on the Tracks with Heavy Train Movement

Akimov, Sergey; Kosenko, Sergey; Bogdanovich, Svetlana

doi:10.1007/978-3-030-37919-3_22

Cited by 9 publications

(5 citation statements)

References 7 publications

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“…Кроме того, технические станции являются структурным элементом в логистической цепи доставки грузов, и оптимизация времени нахождения транзитного поезда по операциям смены локомотива или локомотивной бригады также является актуальной задачей [2,3]. Несмотря на наличие данных преимуществ развития перевозочного процесса, на технических станциях продолжает остро стоять проблема наличия и емкости приемоотправочных путей [4][5][6].…”

Section: аннотацияunclassified

Assessment of the Influence of Internal Factors on the Required Number of Receiving Ways of Technical Stations

Bogdanovich

2023

Proceedings of Petersburg Transport University

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Purpose: To consider the effect of the duration of the element of waiting time for the execution of operations to change the locomotive and locomotive crew for transit trains without processing arriving at the technical station on the required number of receiving tracks. In the simulation model, a comparison of the basic variant and variants taking into account the introduction of the above factors is carried out. The main purpose of the simulation experiments is to find the required number of receiving routes in transit parks of technical stations with different variations of the initial data. By means of the model, the following main indicators are determined, on the basis of which the obtained options are compared: the number of missed trains; loading of the receiving tracks (%); the duration of the occupation of the tracks per day under various operations. Methods: The use of the basic principles and methods of simulation modeling to assess the impact of simulated factors on the required number of receiving paths. Results: The results obtained indicate the adequacy of the proposed simulation model for assessing the influence of internal factors on the required number of receiving and forwarding paths, which is confirmed by the results obtained. Practical significance: The results obtained can be used in the development of recommendations for the adjustment of existing design standards.

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Section: аннотацияunclassified

Assessment of the Influence of Internal Factors on the Required Number of Receiving Ways of Technical Stations

Bogdanovich

2023

Proceedings of Petersburg Transport University

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“…In long-term operation, frozen soil highways often suffer from subsidence, cracking, and other diseases [15][16][17][18]. The existing studies mainly analyze the temperature field of each level of highway, failing to fully consider the water migration of the roadbed [19][20][21][22][23]. Komaravolu et al [24] created an accurate roadbed section model based on COMSOL, discussed the influence of width, slope, and height on roadbed temperature distribution under separate and integrated layouts, and concluded that the main influencing factors are slope and width under the two layouts.…”

Section: Introductionmentioning

confidence: 99%

“…Mastering the temperature field distribution of permafrost foundations is the basis for the infrastructure design and construction [20][21][22][23][24][25][26]. In view of the construction requirements on the runway width and height of the frozen soil airport, Ikeagwuani and Nwonu [27] carried out Abaqus finite-element analysis on the change law of roadbed temperature field for airport runway, under different width, runway types, local environments, and climates, and constructed a calculation model for airport runway roadbed with thermal insulation layer.…”

Section: Introductionmentioning

confidence: 99%

Temperature Field Distribution and Thermal Stability of Roadbed in Permafrost Regions

Yao¹,

Shi²,

Zu³

2021

IJHT

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Many highways and railways in western China are built on permafrost roadbed. Frost heave and thaw settlement might cause diseases to frozen soil roadbed, such as deformation and cracking. For long-term operation, frozen soil roadbed should be kept stable and durable. Therefore, this paper analyzes the distribution law of temperature field of roadbed in permafrost regions, under the effect of thermal stability. Based on the thermodynamic properties of permafrost, the authors analyzed the influence of engineering geological factors, roadbed structural factors, and natural environmental factors on the thermal stability of frozen soil roadbed. Next, the antifreeze mechanism of frozen soil roadbed was described, together with the calculation methods for the relevant parameters. Afterwards, the temperature field of the roadbed with low thermal conductivity insulation material was analyzed by two methods, namely, steady-state thermal analysis and transient thermal analysis, and the solving process of roadbed temperature field was explained in details. The proposed analysis method and solving algorithm were proved valid through experiments. The research results provide a reference for the reasonable design of frozen soil roadbed.

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“…The infrastructure boom in China has created a nationwide network of interconnected highways. However, the highways in special areas (e.g., mountains, hills, watersides, and permafrost regions) may suffer from subgrade and pavement diseases, such as deformation, cracking, subsidence, and potholes, under the combined effects of the particular soil properties and the traffic load [1][2][3]. In these special areas, it is a complex and difficult task to maintain the highways.…”

Section: Introductionmentioning

confidence: 99%

An Evaluation Model of Subgrade Stability Based on Artificial Neural Network

Yao¹,

Shi²,

Zu³

2020

IJSSE

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In special areas, the highways may suffer from such diseases as deformation, cracking, subsidence, and potholes, making highway maintenance a complex and difficult task. To obtain the law-term deformation law of the subgrade and accurately evaluate the subgrade and pavement stability, this paper establishes a subgrade stability evaluation model based on artificial neural network (ANN). Firstly, the law of unstable subgrade deformation in highways of special areas was derived by analyzing the influencing factors on subgrade stability, namely, temperature field, moisture field, and traffic load. Next, the correlations between input and output characteristic quantities were extracted, and used to construct the nonredundant mapping function between influencing factors of subgrade unstable deformation and the levels of subgrade stability. Finally, a fuzzy neural network (FNN) was constructed based on Takagi-Sugeno model, realizing the evaluation of subgrade stability. The proposed model was proved effective and accurate through experiments.

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Stability of the Supporting Subgrade on the Tracks with Heavy Train Movement

Cited by 9 publications

References 7 publications

Assessment of the Influence of Internal Factors on the Required Number of Receiving Ways of Technical Stations

Assessment of the Influence of Internal Factors on the Required Number of Receiving Ways of Technical Stations

Temperature Field Distribution and Thermal Stability of Roadbed in Permafrost Regions

An Evaluation Model of Subgrade Stability Based on Artificial Neural Network

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