Method of Tram Track Structures Feasibility Study

Dudkin, E.P.; Zaitsev, E.N.; Kolankov, Sergey

doi:10.1016/j.proeng.2017.05.133

Cited by 3 publications

(2 citation statements)

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“…World practices in the operation of non-ballasted track systems have shown their cost eff ectiveness under certain operational conditions [3]. There are more than 30 types of non-ballasted track systems in the world today, but choosing a certain system for specifi c operational conditions remains a complicated task [4].…”

Section: Introductionmentioning

confidence: 99%

Modulus of elasticity of non-ballasted track

Ivanova

Kolos

Wang

2023

jour

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The main stiffness properties that determine the stresses in the track structure components under loads from a moving train are the modulus of elasticity of the rail slab and the slab-track/rail correlation stiffness coefficient. These parameters have been investigated for a ballasted track and are well established today, in contrast to those of a non-ballasted track. This study aims at determining the stiffness characteristics of a non-ballasted track, comparing them with those of a ballasted track, and assessing their effect on the stress-strain state (SSS) of the elements of a non-ballasted track structure. Field experiments to measure the stresses in the track structure elements were carried out using strain-gauge methods. As a result of the experiments, the modulus of elasticity and the correlation stiffness coefficient of the rail slab and the rail were determined for the RHEDA2000 slab track system. The results obtained prove it possible to apply a rail-as-beamon-elastic-foundation theory and to use well-established calculation methods for designing a non-ballasted track structure suitable for different operational conditions.

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Section: Introductionmentioning

confidence: 99%

Modulus of elasticity of non-ballasted track

Ivanova

Kolos

Wang

2023

jour

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“…1) становится очевидным, что в российских городах развитие городского подвижного состава движения существенно отстает от современных тенденций. Сложившееся положение должно быть изменено, потому что трамвай облегчает проблемы перевозки пассажиров, являясь при этом экологичным и недорогим видом транспорта [6]. Конечно, городской подвижной состав способен перевести пассажиров в 2-3 раза меньше, чем метро, но при этом он дешевле в 5-10 раз.…”

Section: Introductionunclassified

Urban bridges studies on dynamic impacts from urban rolling stock

Khamidullina

2022

Russian journal of transport engineering

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The article is dedicated to the actual dynamic impact study of rolling stock on urban bridges. The requirements for recording the dynamic impact specified in domestic and foreign regulatory documents are considered. Using a mobile measuring complex, the results of which determine the natural frequencies of vertical, horizontal transverse, and horizontal longitudinal vibrations. The technique used in the experiment allows us to obtain initial data for the dynamic calculation of structures, to clarify the real rolling stock dynamics depending on the state of the rail track on the bridge. Urban rolling stock is a relevant and necessary type of public transport that meets modern city requirements. The bridge crossings construction will ensure the connection of the urban areas separated by obstacles into a single network. When designing such structures, it is important to take into account the effects of actual dynamic coercitive forces. The dynamics study allows, on the one hand, to reasonably set the dynamic loads impact on bridges, on the other hand, to diagnose the structures state by dynamic parameters. In this work, using a specialized mobile measuring complex, the authors measured the oscillation parameters on moving vehicles. As a conducted experimental studies result, a methodology for determining the dynamic characteristics of a moving load and directly urban bridges has been demonstrated. As a result of the conducted experimental studies, it can be concluded that the proposed method allows obtaining initial data for the dynamic analysis of structures for the transport load. In addition, fixing the transport load dynamic impact during operation allows you to clarify the real rolling stock dynamics, depending on the state of the rail track on the bridge.

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