0000000000553460
AUTHOR
Dario Ticali
The role of the tidal and wind forces on the hydrodynamic flow pattern in the Augusta Harbour (Italy)
Il riutilizzo dei materiali di scarto provenienti dai processi industriali di estrazione e lavorazione del marmo nella tecnica delle costruzioni stradali
Ballasted Track Superstructures: Performance of Innovative Railway Sleepers
A railway sleeper is the structural element which transversally connects the two rails by means of fastening components, thus ensuring its gauge. Its additional function is to firmly secure the track to the ballast and to distribute the loads transferred from railway carriages to the ballast. One of the most important parameters in the characterization of performance given by railway sleepers is represented by their lateral resistance to the sliding: the higher its value increases, the better the track stability becomes, thus reducing the frequency of maintenance interventions necessary to keep the superstructure efficient. This article focuses on the performance of two innovative railway s…
L’incertezza nella valutazione dell’efficacia degli interventi di adeguamento
Tramway Track: A New Approach for Measuring the Transverse Profile of Worn-Out Rails
Abstract Monitoring the wear condition of the tramway superstructure is one of the key points to guarantee an adequate safety level of the light rail transport system. The purpose of this paper is to suggest a new non-conventionalprocedure for measuring the transverse profile of rails in operation by means of image-processing technique. This methodological approach is based on the “information” contained in high-resolution photographic images of tracks and on specific algorithms which allow to obtain the exact geometric profile of the rails and therefore to measure the state of the rail-head extrados wear.
Sustainable Mobility in Park Areas: The Potential Offered by Guided Transport Systems
The project choices to design and manage a transport infrastructure system are extremely hard in thinly populated areas like, for instance, protected areas and mostly parks. In actual fact, the need for promotion and development of these areas, often characterized by large surfaces, contrasts with the necessity to preserve their inestimable natural value. The transportation demand in extremely sensible environmental contexts can be satisfied by providing incentives to use reduced-impact means of transport, regulating adequately the vehicle traffic flow and promoting the intermodality between private and public transport systems. Apart from performing their own traditional functions, these s…
Verifica sperimentale sul comportamento delle pavimentazioni stradali di tipo flessibile rinforzate con rete metallica all'azione tangenziale dei carichi
L'utilizzo di scarti di vetro nei conglomerati bituminosi per strato di base
Riciclaggio resodui del marmo - L'uso del "ravaneto" nelle costruzioni stradali
L’importanza economica dell’attività di estrazione e lavorazione dei materiali lapidei di pregio, ha segnatamente marcato lo sviluppo territoriale di aree della regione Sicilia concentrate per lo più nelle due province di Trapani e Catania. Alla elevata quantità estratta non ha corrisposto però una adeguata strategia di pianificazione per la salvaguardia ambientale specificatamente connessa ai materiali inerti da impiegare nel settore delle costruzioni. Infatti, sebbene l’estrazione dei materiali lapidei di pregio genera quantità di materie residuali per lo più non utilizzate pari a circa il 70-80 % del totale estratto, ancora oggi vengono coltivate cave di inerti per l’impiego nel settore …
Piezoelectric energy harvesting from raised crosswalk devices
This paper presents the main characteristics of an experimental energy harvesting device that can be used to recover energy from the vehicular and pedestrian traffic. The use of a piezoelectric bender devices leads to a innovative approach to Henergy Harvesting. The study focuses on the definition and specification of a mechanical configuration able to transfer the vibration from the main box to the piezoelectric transducer. The piezoelectric devices tested is the commonly used monolithic piezoceramic material lead-zirconate-titanate (PZT). The experimental results estimate the efficiency of this device tested and identify the feasibility of their use in real world applications. The results…
Estimation of air pollutant emissions in flower roundabouts and in conventional roundabouts
Abstract The road pollutant emissions, above all in urban context, are correlated to many infrastructural parameters and to traffic intensity and typology. The research work on road junction geometry, carried out in European research centres, has recently allowed to design new road intersection types which are of undoubted interest, especially in terms of traffic functionality and safety, like the flower roundabouts (in which right-turn manoeuvres do not conflict with the circulating flow). The main objective of this paper is to propose a model for the estimation the capacity, delay, levels of service and the pollutant emissions into flower roundabouts. A comparative analysis between conven…
Mono and Stereoscopic Image Analysis for Detecting the Transverse Profile of Worn-Out Rails
AbstractThe purpose of this paper is to suggest a new procedure for reconstructing the transverse profile of rails in operation by means of image-processing technique. This methodological approach is based on the “information” contained in high-resolution photographic images of tracks and on specific algorithms which allow to obtain the exact geometric profile of the rails and therefore to measure the state of the rail-head extrados wear. The analyses and the results concern rails taken from railway lines under upgrading by means of mono- and stereoscopic methods which are appropriate to be employed in laboratory applications or in high-efficiency surveys in situ.
High Performance Bi-Block Sleeper for Improvement the Performances of Ballasted Railway Track
Abstract This article focuses on the performance of an innovative railway sleeper, recently patented in Italy and called “HP-BB” (High Performance Bi-Block sleeper), under different efficiency conditions of the ballast. The research is carried out through a comparative assessment of traditional mono- and bi-block sleepers, evaluating the lateral resistance of the single sleeper thought as independent of the other constituents of the track.
Estimation of pollutant emissions from road traffic by image processing techniques. A case study in a suburban area
This paper suggests a methodology based on the image processing technique able to automatically calculate the vehicle traffic and its components (light vehicles, heavy vehicles and motorcycles). The method also allows to evaluate instant vehicle speeds and, where necessary, to rebuild vehicle trajectories. Traffic data obtained through the procedure described below (capacities and speeds) can be also usefully applied to estimate pollutant emissions from vehicle traffic per year; therefore, the suggested method employs the algorithms defined with CORINAIR procedures, implemented in Copert 4 software. In order to evaluate how effective is the methodology, an experiment has been carried out in…