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Browsing by Author "Montalbán Domingo, María Laura"

Now showing items 1-20 of 50

An artificial neural network model as a preliminary track design tool

Montalbán Domingo, María Laura; Fernández-Villa, J. A.; Masanet Sendra, Claudio; Real Herráiz, Julia Irene (SAGE PUBLICATIONS LTD, 2015)

The formula derived from Zimmermann s theory is commonly used in railway track design. However, this formula depends on variables such as the ballast coefficient, which are difficult to determine. In recent years, numerical ...
An integrated method for the assessment of social sustainability in public-works procurement

Montalbán-Domingo, Laura; Pellicer, Eugenio; García-Segura, Tatiana; Sanz-Benlloch, Amalia (Elsevier, 2021-07)

[EN] Today, critical deficiencies hinder the effective inclusion of social criteria in public-works procurement. The primary reasons for this are the lack of information and objective social assessment methods in the ...
Analysis of vibrations in a modeled ballasted track using measured rail defects

Real Herráiz, Julia Irene; Asensio Serrano, Tamara; Montalbán Domingo, María Laura; Zamorano, Clara (Research Center of the Public Institution "Vibromechanika", 2012-06)

Vibrations caused by trains and transmitted to the ground and structures nearby are a known source of problems related to railways. Therefore this phenomenon should be studied in detail to avoid a negative impact in the ...
Análisis de barreras existentes para la implementación de Lean Construction en el sector de la construcción en países de Iberoamérica.

Ornaghi, Juan Matias (Universitat Politècnica de València, 2021-07-08)

[ES] El sector de la construcción en los últimos tiempos presenta bajos rendimientos en términos de productividad, pese al rol fundamental que cumple en el desarrollo de las sociedades, sobre todo si se la compara con otros ...
Análisis de las causas de retraso y sobrecoste en la construcción de vías terciarias en Colombia.

Chamie Carrillo, Samir Alfredo (Universitat Politècnica de València, 2021-11-02)

[ES] DESCRIPCIÓN: El Trabajo Fin de Máster lleva a cabo un estudio de las causas que producen incremento en el coste y en el plazo en la construcción de vías terciarias en Colombia, a partir de los datos públicos que se ...
Análisis de los criterios de adjudicación en licitación pública de las obras del sector de la construcción, desde una perspectiva internacional.

León Torres, Diego Hernán (Universitat Politècnica de València, 2022-05-31)

[ES] La contratación pública representa una gran parte del producto interno de cada país y el éxito de un proceso de contratación está directamente relacionado con la correcta selección del contratista. Esta investigación ...
Análisis de riesgos de retraso y sobrecoste en obras de suministro de agua potable y saneamiento en Perú.

Julca Varas, Carlos Antonio (Universitat Politècnica de València, 2022-05-16)

[ES] El presente trabajo fin de máster analiza los riesgos que provocan retraso y sobrecoste durante la fase de ejecución de obras de suministro de agua potable y saneamiento en Perú. Para ello se partió de una revisión ...
Competitive Advantages and Barriers in International Construction: An Origin-Host Market Approach

Lozano-Torró, Alicia; García-Segura, Tatiana; Montalbán-Domingo, Laura; Pellicer, Eugenio (Vilnius Gediminas Technical University, 2020)

[EN] The growing importance of international construction activity forces companies to find out what competitive advantages to provide and barriers to overcome to achieve success, considering the particular characteristics ...
Criterios de sostenibilidad en la contratación de obra pública en España

Bueno Llop, Celia (Universitat Politècnica de València, 2017-10-16)

[EN] Sustainable public contracting system, also known as responsible public contracting, consists of the integration of social, ethical and environmental aspects into public contracting procedures and phases. Construction ...
Derailment risk and dynamics of railway vehicles in curved tracks: Analysis of the effect of failed fasteners

Morales-Ivorra, Silvia; Real Herráiz, Julia Irene; Hernández Gracia, César; Montalbán-Domingo, Laura (Springer-Verlag, 2016)

[EN] The effect of the fastener s failure in a railway track on the dynamic forces produced in the wheel-rail contact is studied using the simulation software VAMPIRE to assess the derailment risk of two different vehicles ...
Desarrollo de una herramienta de toma de decisiones para la gestión del mantenimiento de pavimentos bajo criterios de sostenibilidad. Aplicación a la red vial urbana de la ciudad de Valencia

Espinoza Valarezo, Pedro Antonio (Universitat Politècnica de València, 2019-01-23)

[EN] The road network is one of the greatest patrimonial assets of a country, state or city. It also provides a fundamental basis for the growth and economic development, giving huge economic and social benefits. Likewise, ...
Design and validation of a railway inspection system to detect lateral track geometry defects based on axle-box accelerations registered from in-service trains

Real, T.; Montrós Monje, Jorge; Montalbán Domingo, María Laura; Zamorano, Clara; Real Herráiz, Julia Irene (Research Center of the Public Institution "Vibromechanika", 2014-02)

Metropolitan railway transport has become an efficient solution to the mobility necessities in urban areas. Railway track maintenance tasks have to be improved and adjusted to metropolitan requirements, in particular the ...
Determination of rail vertical profile through inertial methods

Real Herráiz, Julia Irene; Salvador Zuriaga, Pablo; Montalbán Domingo, María Laura; Bueno, M. (Professional Engineering Publishing, 2011)

Undergrounds and other metropolitan railway systems are characterized by their intense traffic, lasting up to 20 h per day, and so they need their maintenance work programmes to be optimized, implying an optimization of ...
Development of a system to obtain vertical track geometry measuring axle-box accelerations from in-service trains

Real Herráiz, Julia Irene; Montalbán Domingo, María Laura; Real, T.; Puig, V. (Research Center of the Public Institution "Vibromechanika", 2012)

Nowadays, metropolitan railway systems are in great demand, so they offer high-frequency services for the most part of the day. Therefore there are only a few hours during night available to carry out maintenance tasks. ...
Diseño de una herramienta para la determinación de pautas de arrastre óptimas en el transporte ferroviario. Aplicación a la red ferroviaria de la Empresa de Ferrocarriles del Estado de Chile

Montalbán Domingo, María Laura (Universitat Politècnica de València, 2015-09-08)

[EN] The increasing globalization of markets has led to a greater volume of both imports and exports in almost all countries over the world. Regarding the modal split of freight transport, it is easy to see the great ...
Diseño de una nueva cuña de transición, a partir de elementos prefabricados, para su uso en vías ferroviarias. Aplicación en la línea Antequera - Granada

Morales Ivorra, Silvia (Universitat Politècnica de València, 2016-10-20)

[EN] Nowadays, railway transport has experienced increases of traffic, axle loads and trains speed. Moreover, track quality, comfort and security requirements are today stricter than ever, especially in high-speed networks. ...
Estudio de evaluación ambiental del proyecto Variante de Murillo de rio Leza. Carreteras LR-259 y LR-261. Fase1. Comunidad autónoma de La Rioja

Fabregat Barberán, Francisco (Universitat Politècnica de València, 2019-02-04)

[EN] Currently, environmental sustainability is gaining importance in the procurement of public works, affecting each of the stages of the life cycle of infrastructure. With the entry into effect of the new law on public ...
Estudio de la influencia del amolado del carril ferroviario en la reducción de vibraciones mediante el Método de los Elementos Finitos. Aplicación a las inmediaciones de la estación de Chamartín (Madrid)

Velarte González, José Luis (Universitat Politècnica de València, 2015-11-10)

[ES] The imperfections in the wheel-rail contact are one of the main sources of generation of railway vibrations. Consequently, it is essential to take expensive corrective maintenance measures, the results of which may ...
Estudio de las necesidades sociales y ambientales de España para la selección de criterios sostenibles en la contratación de obra pública

Aguilar Morocho, Madeleine Pilar (Universitat Politècnica de València, 2019-01-24)

[EN] The main objective of this work is to study the sustainable needs of Spain from the selection of criteria in the recruitment of public works, this work finally focuses the analysis in Spain to identify its sustainable ...
Estudio de los factores de retraso y sobrecoste en las obras de Ecuador

Manzano Alvarado, Mateo Xavier (Universitat Politècnica de València, 2020-01-27)

[EN] Delays and cost overruns in the construction works are a global phenomenon, their appearance is so common that it has come to assert that they are an integral part of the projects. Despite of the numerous efforts ...