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Listar por autor "Martínez Fernández, Pablo"

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A review of modelling and optimisation methods applied to railways energy consumption

Martínez Fernández, P.; Villalba Sanchis, Ignacio; Yepes, V.; Insa Franco, Ricardo (Elsevier, 2019)

[EN] Railways are a rather efficient transport mean, and yet there is increasing interest in reducing their energy consumption and making them more sustainable in the current context of climate change. Many studies try to ...
An analytical model for the prediction of thermal track buckling in dual gauge tracks

Villalba Sanchis, Ignacio; Insa Franco, Ricardo; Salvador Zuriaga, Pablo; Martínez Fernández, Pablo (SAGE Publications, 2018)

[EN] In rail transport, track gauge is one of the principal factors that condition the passage of trains. For technical and economic reasons, in some circumstances it is necessary to build and operate the so-called dual ...
An Evaluation of the Resilient Modulus and Permanent Deformation of Unbound Mixtures of Granular Materials and Rubber Particles from Scrap Tyres to Be Used in Subballast Layers

Hidalgo Signes, Carlos; Martínez Fernández, Pablo; Garzón-Roca, Julio; Garrido de la Torre, Mª Elvira; Insa Franco, Ricardo (ELSEVIER SCIENCE BV, 2016)

[EN] Over the last years rubber from scrap tyres has been reused in different civil works such as road embankments and railway platforms due to its resilient properties, low degradation and vibration attenuation. Unfortunately, ...
An Evaluation of the Resilient Modulus and Permanent Deformation of Unbound Mixtures of Granular Materials and Rubber Particles from Scrap Tyres to Be Used in Subballast Layers

Hidalgo Sgnes, Carlos; Martínez Fernández, Pablo; Garzón Roca, Julio; Garrido de la Torre, Mª Elvira; Insa Franco, Ricardo (Editorial Universitat Politècnica de València, 2016-06-01)

[EN] Over the last years rubber from scrap tyres has been reused in different civil works such as road embankments and railway platforms due to its resilient properties, low degradation and vibration attenuation. Unfortunately, ...
Analysis of the bearing capacity of unbound granular mixtures with rubber particles from scrap tyres when used as sub-ballast

Hidalgo Signes, Carlos; Martínez Fernández, Pablo; Garzón-Roca, Julio; Insa Franco, Ricardo (Consejo Superior de Investigaciones Científicas (CSIC), 2016)

[EN] Scrap tyres are a problematic waste material. As a method for recycling large quantities of rubber from scrap tyres, this paper analyses the use of unbound granular mixtures with varying percentages of rubber particles ...
Analysis of the vibration alleviation of a new railway sub-ballast layer with waste tyre rubber

Hidalgo Signes, Carlos; Martínez Fernández, Pablo; Medel Perallon, Elías; Insa Franco, Ricardo (Springer - RILEM Publishing, 2017)

[EN] This paper focuses on the assessment of the vibration behaviour of granular sub-ballast materials mixed with rubber particles from scrap tyres. The main objective is to evaluate whether these mixes attenuate vibrations ...
Analytical model for predicting the buckling load of continuous welded rail tracks

Navarro Martinez, Juan Ignacio; Villalba Sanchis, Ignacio; Martínez Fernández, Pablo; Insa Franco, Ricardo (SAGE Publications (UK and US), 2015-07)

The use of continuous welded rail (CWR) track has solved many of the problems associated with tread surface discontinuities that occur in jointed tracks. However, due to the longitudinal expansion of the rails in CWR tracks ...
Cálculo de velocidades de paso por curva en ferrocarriles

Salvador Zuriaga, Pablo; Insa Franco, Ricardo; Villalba Sanchis, Ignacio; Martínez Fernández, Pablo (Universitat Politècnica de València, 2020-06-29)

El laboratorio virtual muestra las velocidades máxima, mínima y teórica de paso por curva de un tren, para un determinado ancho de vía y radio de curva, y en función del peralte real. La velocidad teórica de paso es aquella ...
Cálculo del esfuerzo axil y desplazamientos en Barra Larga Soladada

Salvador Zuriaga, Pablo; Villalba Sanchis, Ignacio; Insa Franco, Ricardo; Martínez Fernández, Pablo (Universitat Politècnica de València, 2020-06-29)

Este laboratorio virtual permite obtener los esfuerzos axiles que se dan en un carril que conforma una barra larga soldada, así como su variación a lo largo de la longitud de la zona de respiración y los desplazamientos ...
Characterisation of an unbound granular mixture with waste tyre rubber for subballast layers

Martínez Fernández, Pablo; Medel Perallon, Elías; Hidalgo Signes, Carlos; Insa Franco, Ricardo (Springer Verlag (Germany), 2015-12)

Scrap tyres are a solid waste material produced in large quantities. One potential way of disposal is to use rubber particles from shredded tyres as a construction material. Within this context, this paper presents a ...
Estudio y optimización del consumo energético del ferrocarril mediante redes neuronales y algoritmos heurísticos

Martínez Fernández, Pablo (Universitat Politècnica de València, 2020-01-07)

[ES] El transporte es una actividad fundamental en las sociedades modernas, pero también es uno de los sectores que más contribuye al consumo energético y a las emisiones. El ferrocarril es uno de los medios de transporte ...
Experimental and numerical investigations of dual gauge railway track behaviour

Villalba Sanchis, Ignacio; Insa Franco, Ricardo; Martínez Fernández, Pablo; Salvador Zuriaga, Pablo (Elsevier, 2021-09-13)

[EN] The dual gauge track, in which a third rail is added to the conventional track section, has recently been installed in large sections of the Spanish railway network, allowing the passage of trains of two different ...
Impact of Symmetric Vertical Sinusoid Alignments on Infrastructure Construction Costs: Optimizing Energy Consumption in Metropolitan Railway Lines Using Artificial Neural Networks

Pineda-Jaramillo, J.; Salvador Zuriaga, Pablo; Martínez Fernández, Pablo; Insa Franco, Ricardo (Springer-Verlag, 2020-09)

[EN] Minimizing energy consumption is a key issue from both an environmental and economic perspectives for railways systems; however, it is also important to reduce infrastructure construction costs. In the present work, ...
Measuring track vertical stiffness through dynamic monitoring

Cano, María José; Martínez Fernández, Pablo; Insa Franco, Ricardo (Thomas Telford Ltd., 2016)

[EN] This paper proposes a methodology for the evaluation of the track condition by means of the measurement of the track stiffness. This magnitude is calculated from vertical acceleration data measured at the axle box of ...
Methodology for evaluating thermal track buckling in dual gauge tracks with continuous welded rail

Villalba Sanchis, Ignacio; Insa Franco, Ricardo; Salvador Zuriaga, Pablo; Martínez Fernández, Pablo (SAGE PUBLICATIONS LTD, 2017-03)

In the National Spanish railway network, two types of track gauge with continuous welded rails are currently in use: the Iberian wide gauge (1668 mm) and the standard gauge (1435 mm). In order to improve links and ...
Modeling the energy consumption of trains by applying neural networks

Pineda-Jaramillo, Juan Diego; Insa Franco, Ricardo; Martínez Fernández, Pablo (SAGE Publications, 2018)

[EN] This paper presents the training of a neural network using consumption data measured in the underground network of Valencia (Spain), with the objective of estimating the energy consumption of the systems. After the ...
Modelling Electric Trains Energy Consumption Using Neural Networks

Martínez Fernández, Pablo; García-Román, Carla; Insa Franco, Ricardo (Elsevier, 2016)

[EN] Nowadays there is an evident concern regarding the efficiency and sustainability of the transport sector due to both the threat of climate change and the current financial crisis. This concern explains the growth of ...
Modelling electric trains energy consumption using Neural Networks

Martínez Fernández, Pablo; García Román, Carla; Insa Franco, Ricardo (Editorial Universitat Politècnica de València, 2016-06-01)

[EN] Nowadays there is an evident concern regarding the efficiency and sustainability of the transport sector due to both the threat of climate change and the current financial crisis. This concern explains the growth of ...
Modelling energy consumption in diesel multiple units

Salvador Zuriaga, Pablo; Martínez Fernández, Pablo; Villalba Sanchis, Ignacio; Insa Franco, Ricardo (SAGE Publications, 2017)

[EN] This study presents a train simulation tool for the evaluation of a train journey and its energy consumption. The simulation tool consists of a train motion model and an energy consumption model, specifically developed ...
Modelo explicativo para el transporte de carga por camión de última milla, y su aplicación para mejorar la logística urbana sostenible en la comuna de Providencia, Santiago de Chile.

Arias Montenegro, Jorge Alejandro (Universitat Politècnica de València, 2024-04-22)

[ES] Se realizará un modelo explicativo del comportamiento de los camiones de última milla en la comuna de Providencia, Santiago de Chile. Este modelo, visualizará los flujos de origen- destino y su comportamiento en ...