The system and subsystem design requirements are assigned from the general requirements of en 164321. It causes dust pollution hence efforts are always being made in the search of. Introduction to ballastless track edited track rail. The most efficient method for laying railway tracks in concrete beds. Mar 15, 2015 compared with a ballasted track slab system, a ballastless track slab system exhibits better performance in terms of stability, durability, and maintenance in highspeed railways. Comparative analysis of ballastless track system design using. Life cycle cost, energy and carbon assessments of beijing. Rail bound public transport is becoming increasingly important in order to counter the growing volume of traffic and associated problems, such as traffic jams, a lack of parking spaces, co 2 and particulate matter pollution.
Composite action of the track slab and the selfcompacting concrete. The term ceramic refers to the inorganic phosphate coating binder and the metal pertains to the aluminite powder filler. The substructure of the ballastless track has to be stabilised to a depth of at least 2. Stabirails new ballastless track or slab track construction system. Aug 06, 2019 ballastless track acciona construction, in anticipation of the next surge of investment in rail infrastructure, and aware of the important role that the ballastless track will play in this surge, as well as of the obstacle to competitiveness caused by the use of commercial systems, has promoted the development of its own ballastless track system. A ballastless track or slab track is a type of railway track infrastructure in which the traditional elastic combination of tiessleepers and ballast is replaced by a rigid construction of concrete or asphalt. Technology of fully mechanized track construction with the deployment of simple track laying equipment to highly sophisticated track. Jul 01, 2019 in general, railroad track is consists of rail, rail joint, railroad tie and non ballasted track, also called ballastless track, is the railway track.
For clarity it is often referred to as railway track british english and uic. The user has requested enhancement of the downloaded file. Ballastless track systems with concrete slabs are used more and more. Ballastless track for metros, mainlines and washable aprons. Its thermal properties were studied through finite element modeling and heat. Our ballastless track construction system is a continuous process in which rails can be assembled directly on the concrete bed with millimeter accuracy, thus guaranteeing faster. Kolkata metro introduction ballast has been an integral part of railway track and an economical medium providing an elastic support to it for many years. The ballastless track is based on the japanese shinkansen slab track. Ballastless track system on asphalt getrac a1 is a ballastless track system with direct support of the track panel on an asphalt supporting layer.
Specification based nonempirical ballastless track. Ballasted track and nonballasted track railway track. This configuration guarantees safe and permanent positioning of the track. There are two main components in castinsitu ballastless tracks i. This part of en 16432 specifies system and subsystem design and component configuration for ballastless track system. Jun 15, 2017 this advantage holds good for all ballastless track systems. Due to increasing traffic flows the extension of transport infrastructure with rail roads and high speed lines is an ongoing process worldwide. Comparison of ballast and ballastless tracks master thesis tu graz. Highspeed rail travel, as a fast connection between highdensity population areas and as an alternative to frequentlyoverloaded air connections with an.
Sep 20, 2019 rail traffic is reaching out toward new horizons on ballastless track systems. For ballasted track, it is possible to introduce ballast mats under the ballast in order to increase the vibration isolation. Aug 03, 2019 ballastless track acciona construction, in anticipation of the sysetm surge of investment in rail infrastructure, and aware of the important role that the ballastless track will play in this surge, as well as of the obstacle to competitiveness caused by the use of commercial systems, has promoted the development of its own ballastless track system. In ballastless tracks, the rails are rigidly fastened to special types of concrete tiessleepers that are themselves set in concrete. The design of a ballastless track is generally made up of the following components. One together with customers and partners develops con. Pdf vertical dynamic analysis of ballastless tracks on. This mode of con struction accordingly satisfies all requirements for application in railway and urbantransit situations. Soon after, a case study which forms the basis for the preparation of this document is shown. Ballastless track for urban transit lines dr s ponnuswamy, fellow ballast has been an integral part of railway track for many years. Potential future ballastless track design can also be done based on the jointed plain concrete pavement technology, which is approved for road construction. Mechanical characteristic variation of ballastless track. Such mats are often used for track in tunnels see chapter.
Dec 27, 2018 ballastless track systems with concrete slabs are used more and more. The concrete carriageway slab 3 consists of two layers 6,7 made on top of each other, between which a reinforcement 8 made of reinforcing bars running in the direction of. Blastless track construction in tunnel and elavated metro. Structural performance of ballastless track slabs reinforced. Railway track, rails, components, railway fixed equipment, railway equipment defines system and subsystem design and component configuration for. Pdf ballastless track for urban transit lines vinoth.
Practically ballastless track systems ensure its serviceability at a very low maintenance costs over many years. The superstructure systems used for this purpose must be. Since 1996, db has been operating a test track in karlsruhe consisting of seven new types of ballastless track 9, 19, 20. Ballastless tracks track rail transport rapid transit. Ballastless track on highspeed lines a guarantee for. The railway superstructure monitoring in bratislava tunnel. In ballastless track rails and sleepers are embedded in 2 abstractrailways is becoming faster, with high speed running vehicles exerting wheel loads on tracks could become critical for track quality and the overall lifecycle. Comparative analysis of ballastless track system design. A prerequisite for the success of the ballastless track system is the low settlement of the foundation. Stabirail has designed and developed a groundbreaking method for milling concrete blocks. The ballasted track is composed of rails, rail supports, rail fastening and ballast. A longitudinal force loading instrument for rails was developed to simulate the longitudinal temperature force of the rail of a ballastless track under different rail temperatures. Ballastless tracks on asphalt pavements design and.
Pdf economical evaluating the ballastless railway track with. Common track slab structure of the chinese highspeed railway. Cracks in ballastless track slabs are inevitable in the construction and operation of highspeed railway. Twinblock sleeper for ballastless slab track, related to a railway sleeper of the type to be used in particular for ballastless track or concrete slab track and comprising two concrete blocks joined by a reinforcing steel frame, said blocks being provided with holes intended to house an fastening to secure a rail, preferably four holes which allow the sleeper to be used for two different. This study laid a firm foundation for the further analysis of defects of crts ii slab ballastless track. Sleeper for ballastless track system the infrastructure in congested innercity areas has been exposed to everincreasing demands in recent years. Determination of longitudinal rail restraint 1230259982 dc bs en 164321. The ballastless track requires subsoil, which is almost free of deformation or settlement. Experimental study on highspeed railway ballastless track. Research on crtsiii ballastless track slab cracks of high. Railroad ties, crossties or railway sleepers support rails in railroad tracks.
Pdf traditional track designs are now in a process of change due to higher axle loads and faster speeds of trains. Introduction conventional ballasted railway tracks require periodical tamping due to uneven settlements of the ballast during operation. Pdf analysis of a moving load on ballastless rail track. Ballastless track substructure the ballastless track design requires a foundation which is almost free of deformation and settlement. Up to now most of the ballastless track systems, which have been built on ballastless track systems using discrete rail. This is a type of track used on high speed rail hsr, metro track, railway track on tunnels or on bridges viaducts, bullet train, indian railways etc. At institute for railway engineering and transport economy. Effects of metalceramic anticorrosion coating on the. The infrastructure in congested innercity areas has been exposed to everincreasing demands in recent years. Although most applications involve bridges or tunnels, the use of ballastless track on open line is increasing. Ep2899317a1 twinblock sleeper for ballastless slab. The construction of the railway superstructure was built during the reconstruction of the single track tunnel in 2014 and consists of ballasted track, ballastless track of the prefabricated obbporr slab system and the transition area between these structures. In spite of increase in investment in railway infrastructure around the world, in india the construction of new tracks is sluggish and uses the same manual intensive. Ep0715021a1 ballastless track superstructure for at.
Article information, pdf download for composite action of the track slab and the. Pdf there are many arguments against the use of ballastless track because of its greater initial investment costs than those of traditional track. The performance should be evaluated based on first test sections. Jul 30, 2019 in general, railroad track is consists of rail, rail joint, railroad tie and non ballasted track, also called ballastless track, is the railway track. Based on comprehensive investigation of documents, and taking cracks in ballastless track slabs as the main object, systematic and deep research has been done within this paper. Though the material is locally available, but ballasted track calls for frequent maintenance attention, and periodical screening. David thompson, in railway noise and vibration, 2009.
System design, subsystems and components pdf download. He is a member of numerous german and european technical standard committees, e. Ballastless tracks therefore offer a high consistency in track geometry, the adjusting of which is not possible after the concreting of the superstructure. This master thesis is a product of authors interest in railway superstructures, due to a great professorial influence during her civil engineering master studies. However, some ballastless track concepts originally designed for lower speeds could possibly be applied to high speed track. Initially, a general approach on the ballastless track is provided. The basic structure includes a base course 2, a continuously manufactured concrete slab 3 and receiving devices 4 for the individual railroad tracks 1. Due to the fact that ballastless tracks in highspeed railways are not only subjected to repeated traintrack dynamic interaction loads, but also. Instrument for investigating the rail of a ballastless. Rail superstructure, rail supports, concrete sleeper, ballasted track, slab track, stability.
Sleeper for ballastless track system voestalpine railway. Up to now most of the ballastless track systems, which have been built on ballastless track systems using discrete rail seats as well as systems with sleeper. A typical stiffness per unit area is of the order of 30 mnm 3, which gives a stiffness per sleeper end of around 20 mnm. The technical concept of a railway track consisting of ballast, sleepers, and rails is very old and has stood the test of time. Dosto es video me ballestless railway track k bare me bataya gya hai janane k liye video ko pura dekhiye achha lage to like kijiye share kijiye. In the ballastless track system, a resonant jointless track circuit is commonly used for highspeed railways in china and korea. Finally, the presentation and discussion of the various results is performed. A highly reflective metalceramic anticorrosion coating is proposed to address temperatureinduced track arching and concomitant damage of the china railway track system ii ballastless tracks. Apr 05, 2021 rail traffic is reaching out toward new horizons on ballastless track systems. Track standards for ultra highspeed lines in india. Although it is precisely ballastless track systems that have proven extensively maintenancefree. The track system atdg which stands for asphalt supporting layer for track direct support, green is a ballastless track system in which a crosssleeper track panel, consisting of concrete biblock sleepers and the connected rails, is directly installed onto an asphalt supporting layer with exact height tolerance.
Thanks to the targeted arrangement of elastic elements it is possible for the stiffness of the individual layers to be coordinated. The ballastless track is already a credible solution in railway engineering, showing great a high speed railway viaduct with rheda 2000 ballastless track. But ballastless track systems using discrete rail seats would require a constructive reinforcement within the slabs. To provide necessary resistance to track for longitudinal lateral stability. The ballastless track must normally be prepared to a depth of at least 2. Zhu, y study on the structure design of crtsiii slab ballastless track. Ballastless track on highspeed lines a guarantee for travel. It does not include any requirements for inspecting, maintaining, repairing and replacing ballastless track systems during operation.
Din standards committee railway na 0870001 aa infrastructure, din subcommittee. Ballastless track on bridges ballastless tracks wiley. This european standard is applicable to all railway applications up to 250 kn axle load. This european standard defines the general requirements concerning the design of ballastless track systems.
Dynamic behaviour of highspeed railway bridges with. At present ballastless track has been widely applied to railway line for passenger in our country, therefore it has broad prospect. Therefore, ballastless tracks must be concreted within a tolerance of 0. Pdf international journal of emerging technology and. When the deficient superelevation is less than 10 mm, the percentages of the transverse vibration acceleration of the train body induced by the hanging system of the train and the track irregularity in the total transverse vibration acceleration are more than 70% for ballasted track and 40% for ballastless track. Innovations in railway track esveld consulting services. Slab track on bridge the application of the slab tracks on bridges can introduce problems when certain mechanical behaviour is not taken into account. Chengdudujiangyan express railway is an intercity line equipped for speed of 200 kmh. The ballastless or slab track is a concrete or asphalt surface, replacing the standard ballasted track. Ballastless tracks free download as powerpoint presentation. Track specialists and sites were visited in italy, japan, germany, france, swiss and the netherlands. Ballastless track system for at least one railroad track.
Design and innovation of ballastless track system on chengdu. Dec 01, 2017 ballastless track systems with concrete slabs are used more and more. Important functions of ballast to transfer and distribute the load form sleepers to a larger area of formation. Based on comprehensive investigation of documents, and taking cracks in ballastless track slabs as the main object, systematic and deep research has been done. Introduction to ballastless track edited free download as powerpoint presentation. Ballastless track structures were split into four groups. Railway applications ballastless track systems part 2.
Ballastless track, sleeper panel, asphalt pavement. The quality evaluation of the ballastless track construction in the. Jan 24, 2019 in general, railroad track is consists of rail, rail joint, railroad tie and non ballasted track, also called ballastless track, is the railway track. Comparison of ballasted and ballastless tracks 97836392786. It enables trains to move by providing a dependable surface for their wheels to roll upon. The laying of ballastless railway track used to be a time consuming job. Mechanical characteristic variation of ballastless track in highspeed. Sleeper for ballastless track system voestalpine railway systems. Overview of ballastless railway tracks the ballastless track is already at the forefront of the. It is an economical medium providing an elastic support to the sleepers and absorbs major part of the noise created by passing wheels.
In contrast to bridges with ballasted track, where long. Analysis and design of steel bridges with ballastless track. In 1992, fs had less than 100 km of ballastless track, of which 2. Download comparison of ballasted and ballastless tracks. The calculation methods and parameters concerning train load, thermal effect of high georgios michas 2012 discussed various nonballasted speed railway ballastless track, together with the structural concepts and some considerations are made in relation to design methods are summarized. Ballastless track is undergoing rapid d e velopment in germany. The railway superstructure monitoring in bratislava tunnel no. Where applicable, existing subsystem or component requirements from other standards are to be referenced. If you have questions or feedback, please feel free to contact us. To provide elasticity and resilience to track for getting proper riding comfort. The track on a railway or railroad, also known as the permanent way, is the structure consisting of the rails, fasteners, railroad ties sleepers, british english and ballast or slab track, plus the underlying subgrade.
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