Search results for "Railroad"
showing 10 items of 21 documents
Memorands jaunbūvējamās dzelzceļu līnijas Rīga-Ērgļi-Kārsava posma Ērgļi-Madona lietā
1934
Mašīnraksta kopija
Effect of temperature and traffic on mix-design of bituminous asphalt for railway sub-ballast layer
2017
A wide integrated research has been carried out to assess the suitability of bituminous mixtures as the sub-ballast layer in railways. The influence of temperature on the mechanical characteristics and thermal susceptibility of the bituminous conglomerate—which forms sub-ballast layer of railway lines—has provided the motivation for carrying out a measurement of the thermal cycles in this layer. The evaluation of the average seasonal temperatures has proven to be well interpolated by sinusoidal functions, of which characteristic parameters are determined. To expand the validity of the study in different weather situations apart from Sicily, where the experiment was held, we proceeded to app…
Dynamic railroad inspection using the laser-air hybrid ultrasonic technique
2006
Laser-Air Hybrid Ultrasonic Technique (LAHUT) combines laser generation with air-coupled detection of ultrasound. The technique is non-contact and has the characteristic of operating from remote distances. Acoustic wave laser-generation apparatus can be metres away from the interrogated surface while air-coupled detection standoff can be on the order of several centimetres. The technique has the unique capability of interrogating structural materials in their true industrial environment. Dynamic tests are performed on parts with complex geometry, limited accessibility and curved surfaces. Also, dark and rough finish surfaces, which significantly reduce the efficiency of optical detection te…
Stazioni e città - Trasporti e cultura n.38
2014
This monograph section of “Trasporti & Cultura” examines the relationship of new high-speed railroad stations to their cities. The objective is to investigate the depth and meaning of the transformations being wrought by the new stations, in a comparative international scenario. Articles on Japan and China are followed by European case studies. The academic premise that looked to railway stations and tracks as a tool to regenerate blighted urban and industrial areas is clearly reasserted. Links can be established between urban transformation, new rail technology and the siting of the stations. Reframed by the new challenges of sustainable actions, energy transition, shrinking economies, the…
Railroad integration and uneven development on the European periphery, 1870-1910
2021
This study explores the relationship between railroad integration and regional development on the European periphery between 1870 and 1910, based on a regional dataset including 291 spatial units. Railroad integration is proxied by railroad density, while per capita GDP is used as an indicator of economic development. The period under study is of particular relevance as it has been associated with the second wave of railroad construction in Europe and also coincides with the industrialization of most of the continent. Overall, we found that railroads had a significant and positive impact on the growth of per capita GDP across Europe. The magnitude of this relationship appears to be relative…
L’infrastruttura scomparsa. Il nuovo suolo della stazione Alta Velocità La Sagrera a Barcellona
2017
L’enorme progetto appena completato a Barcellona per il nuovo polo ferroviario della stazione Sagrera si caratterizza soprattutto per il legame fra la nuova stazione dell’Alta Velocità (AVE) e il vasto parco lineare, progetto opera di West 8, che copre la lunga trincea un tempo determinata nel tessuto urbano dai binari preesistenti. Ricostruendo il quadro di uno dei più grandi e ambiziosi progetti di rigenerazione urbana legati all’infrastruttura ferroviaria oggi in Europa, questo articolo si concentra sulla subordinazione della stazione al parco. Non si tratta di una semplice condizione di posizione (la stazione è letteralmente sotto il parco), ma di una nuova e sempre più diffusa condizio…
LYON PART DIEU, HUB METROPOLITANO CONTEMPORANEO
2014
Lyon Part Dieu, contemporary metropolitan hub. By François Decoster, Djamel Klouche and Caroline Poulin. This article introduces a series of concepts developed by the AUC in its research on the theme of mobility, transportation, and stations in contemporary cities. The “inexorable station” in fact debates the need, for contemporary stations and more in general transportation venues, to evolve as projects for open spaces, to be porous with respect to the city while establishing with it an organic relationship. Stations are not just specialized venues dedicated to transportation, but more than ever they are becoming “initiators”, essential levers for urban development and regeneration in toda…
Noise annoyance is associated with depression and anxiety in the general population : the contribution of aircraft noise
2015
BACKGROUND: While noise annoyance has become recognized as an important environmental stressor, its association to mental health has hardly been studied. We therefore determined the association of noise annoyance to anxiety and depression and explored the contribution of diverse environmental sources to overall noise annoyance. PATIENTS AND METHODS: We investigated cross-sectional data of n = 15.010 participants of the Gutenberg Health Study (GHS), a population-based, prospective, single-center cohort study in Mid-Germany (age 35 to 74 years). Noise annoyance was assessed separately for road traffic, aircraft, railways, industrial, neighborhood indoor and outdoor noise ("during the day"; "i…
Trains with a view to sickness
2001
This study was supported by Region Rhone-Alpes (contract ARASSH n°L099552501) and CEC Improving Human Potential: Access to Research Infrastructures HPRI-1999-CT-00025.
Numerical study for a new methodology of flaws detection in train axles
2013
Train loads and travel speeds have increased over time, requiring more efficient non-destructive inspection methods. Railway axles are critical elements; despite being designed to last more than 20 years several cases of premature failure have been recorded. Train axles are inspected regularly, but the limits associated to the traditional inspection technologies create a growing interest towards new solutions. Here a novel non-destructive inspection method of in-service axles based on non-contact data collection is presented. The propagation of surface waves, generated by a thermo-elastic laser source, is investigated using a finite element method based on dynamic explicit integration. Coup…