A Concept of Integration of a Vactrain Underground Station with the Solidarity Transport Hub Poland

This paper provides an analysis of a designed underground station infrastructure for vacuum tube high-speed trains for the planned mega transport hub in Poland. The potential of integrating the infrastructure of the station building with sealed low-pressure tubes system is analyzed. The Solidarity Transport Hub Poland is a planned mega hub to be located in Baranów Municipality, Poland, which is comprised of an airport, an airport city, a road, and railway infrastructure. It is to be integrated with the first route of vactrains in Poland. The aim of this paper is to design a hyperloop station building adequate for the advanced technology of low-pressure high-speed trains. Designing a hyperloop station is not trivial, due to technological aspects which have not been hitherto present in airport or railway planning and design, such as low-pressure zones or airlocks which determine possible passenger paths and evacuation roads. Both the mega airport and Polish hyperloop are in the planning stage, therefore, in this paper, available models and designs of the hyperloop station building and infrastructure are used in order to formulate recommendations for further development and identify critical issues related to the safety and reduction of passenger transit time. The main contribution of this paper is a model of the hyperloop station building which respects the principles of spatial planning and safety standards.

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STREETSCAPE TERRITORIES AND THE CASE OF ADDIS ABABA

Journal of Research in Architecture and Planning ◽

10.53700/jrap1922015_2 ◽

2015 ◽

Vol 19 (2) ◽

pp. 12-21

Author(s):

Kris Scheerlinck

Keyword(s):

Urban Growth ◽

High Speed ◽

Large Scale ◽

Addis Ababa ◽

Urban Fabric ◽

Formal Approach ◽

Ongoing Research ◽

Planning And Design ◽

High Speed Trains ◽

The Relationship

Urban transformation is directly related to the planning, design and use of a series of urban infrastructures, from streets to highways, from pedestrian, bicycle, bus or train lines and their connecting transport hubs to rivers, canals or harbor facilities. They play an essential role in the transformation of the urban fabric. Recent societal changes, especially in developing countries, demanding higher mobility and urban interaction, influence the used planning and design strategies to transform or extend urbanized areas by planning or renewing these infrastructures. However, its relationship to the surrounding urban fabric, more specifically the collective spaces it constitutes at the level of the streetscape, is not always an initial or integral part of providing these infrastructures. In many cases, the urban fabric is wrapped around or fragmented by these infrastructural projects, causing scale contrasts and struggle to integrate within, generating processes of misappropriation or misuse. Especially in developing contexts, new infrastructures are often planned and built in a fast way, rarely considering the qualities of the existing urban fabric. During the last decades, research on planning and design models related to the building or integrating of urban infrastructures has been developed and tested via specialised disciplinary approaches to produce insights on the relationship urban infrastructures have with the surrounding urban fabric (Secchi, 2013; Hasan, et. al. 2010; Shannon and Smets, 2009; De Maulder, 2008; Hillier, 1996;). However, additional in-depth research is needed to achieve critical insights on the relationship of infrastructures and their direct environments, starting from their constituent streetscapes - considering the level of the street that defines the perception and use by the inhabitants at an intermediate scale. This paper focuses on an ongoing research project in Addis Ababa (Ethiopia), where different visions and models of urban growth are at stake (Figure 1). The recent increase of (foreign) investment in major infrastructures, changes the city's streetscapes drastically. This large scale and formal approach of installing high speed trains, Light Rail Transit's (LRT) or expanded highways and ring roads, to stimulate urban growth, contrasts with the daily routines of the proper citizens that move around by walking or by means of mini buses, both adding to the informal qualities of the city's streetscapes. Within this multi-centred capital, the location of built and planned housing projects, commercial centres, administrative or commercial high rises is studied in relation to the present infrastructural axes and questions models of proximity, accessibility and permeability. Keywords: Streetscapes, High Speed Trains, LRT, Addis Ababa, Infrastructure

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A Study on the Improvement of the Durability of an Energy Harvesting Device with a Mechanical Stopper and a Performance Evaluation for Its Application in Trains

Micromachines ◽

10.3390/mi11090785 ◽

2020 ◽

Vol 11 (9) ◽

pp. 785

Author(s):

Jaehoon Kim

Keyword(s):

Performance Evaluation ◽

Energy Harvesting ◽

High Speed ◽

Wireless Sensor Node ◽

Element Analysis ◽

Design Component ◽

Critical Issues ◽

High Speed Trains ◽

Energy Harvesting Devices ◽

A Performance

Durability is one of the critical issues concerning energy harvesting devices. Even with the energy harvesting device’s excellent performance design, the moving components, such as the spring, get damaged during operation. In this study, an energy harvesting device was designed for durability improvement. The mechanical stopper of the energy harvesting device was selected as a new design component to prevent spring damage. An experimental and finite element analysis (FEA) was carried out on the amount of energy harvesting power possible using a mechanical stopper to improve the durability of the energy harvesting device. A performance evaluation of the energy harvesting device using the mechanical stopper was conducted under laboratory and driving conditions of a high-speed train traveling at 300 km/h. The measurement of the generated power gives the target value for the minimum performance of the newly designed energy harvesting device used as the power source of the wireless sensor node for high-speed trains.

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Experimental Characterization of LTE Wireless Links in High-Speed Trains

Wireless Communications and Mobile Computing ◽

10.1155/2017/5079130 ◽

2017 ◽

Vol 2017 ◽

pp. 1-20 ◽

Cited By ~ 11

Author(s):

Tomás Domínguez-Bolaño ◽

José Rodríguez-Piñeiro ◽

José A. García-Naya ◽

Luis Castedo

Keyword(s):

High Speed ◽

Signal To Noise Ratio ◽

Path Loss ◽

Delay Spread ◽

Power Delay Profile ◽

Power Spectral ◽

Railway Infrastructure ◽

High Speed Trains ◽

Doppler Power ◽

The One

Multimedia and data-based services experienced a nonstopping growth over the last few years. People are continuously on the move using devices to access multimedia contents or other data-based services. Due to this, railway companies are showing a great interest in deploying broadband mobile wireless networks in high-speed-trains with the aim of supporting both passenger services provisioning as well as automatic train control and signaling. Nowadays, the most widely used technology for communications between trains and the railway infrastructure is GSM for Railways (GSM-R); however, it has limited capabilities to support such advanced services. Due to its success in the mass market, Long Term Evolution (LTE) seems to be the best candidate to substitute GSM-R. In this paper, we experimentally characterize the downlink between an LTE Evolved NodeB (eNodeB) and a high-speed train in a commercial high-speed line. We consider two links: the one between the eNodeB and the antennas placed outdoors on the train roof, and the direct link between the eNodeB and a receiver inside the train. Such a characterization consists in assessing the path loss, the Signal to Noise Ratio, the K-Factor, the Power Delay Profile, the delay spread, and the Doppler Power Spectral Density.

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The Past, Present and Future of High Speed Trains in the U.S.A.

2016 Joint Rail Conference ◽

10.1115/jrc2016-5727 ◽

2016 ◽

Author(s):

Brian T. Scales

Keyword(s):

New York ◽

Gas Turbines ◽

High Speed ◽

Design Standards ◽

Planning Stage ◽

The Past ◽

Track System ◽

High Speed Trains ◽

Emergency Power ◽

Standards And Regulations

The Paper describes the past, present and future of high speed trains following the passing of the High Speed Ground Transportation Act fifty years ago. In the distant past, electrically-powered Metroliners ran between Washington and New York and Turbo Trains powered by gas turbines ran between Boston and New York on the Northeast Corridor. In the recent past, AEM-7 and HHP-8 electric locomotives supplied by EMD and Alstom respectively for operation with Amfleet railcars also ran on the Northeast Corridor. At the present time, electrically-powered Acela trainsets and ACS-64 electric locomotives supplied by Siemens are in service on the Northeast Corridor. Trains of Horizon and Amfleet railcars hauled by General Electric P-42-DC diesel locomotives operate between Chicago and St. Louis and Chicago and Detroit on the Mid West Regional Rail System. The future consists of two on-going projects that are being implemented, three projects that are in the planning stage and six projects that are in the concept phase. Features to be considered in the design of a high speed train system include: Design Standards and Regulations, Motive Power, Train Configuration, Maximum Axle Load, Dual-Mode Propulsion, Emergency Power, Double Deck Configuration, Jumbo Train Arrangement, Radial Trucks and Hi-Lo Bi-Track System.

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