117,347 research outputs found
Transformation of the city of Padua for the benefit of "weak" users: footbridge over San Gregorio channel (Padua, Italy)
No full textRe-estabilishing the Functionality of Older Bridges: Two Case Studies, Italy
No full textThe cyclist and pedestrian bridge over the river Santerno is fundamental to the widening of the historic bridge dating from 1945 that carries the 610 Provincial Road linking the provinces of Ferrara, Bologna and Florence. The physical limitations of the old bridge meant that it was obviously unable, in static and functional terms, to ensure the safety of cyclists and pedestrians. A second bridge was therefore erected alongside the older structure, designed not only to respect its appearance but to enhance its main architectural, environmental and panoramic features. The work was completed in the form of a steel structure consisting of a series of arches, secured to the existing bridge walls and supporting a wooden platform acting as pedestrian walkway and cycle track. The arches are set at an angle to transfer vertical load to the piles of the old bridge, and the beams supporting the platform are secured to the walls of the old bridge to complete the structure and prevent tipping movement.
Similar reasoning underlies the bridge over the Venice-Milan motorway in the municipality of Colognola ai Colli near Verona. The objective of this project was to render the old San Pietro bridge accessible to all categories of user by erecting a second bridge with a modern, lightweight reticular structure along the west face of the existing bridge. This design solution avoids mixing different types of traffic and maintains protected areas for the different categories of user. The new bridge has a total width of 2.50 metres and runs alongside the older structure while remaining independent of it. The project has therefore chosen a solution that makes use of the original bridge without compromising its structural strength. From a formal point of view the pedestrian bridge blends with the old bridge in a very elegant manner by deriving trellises with natural shapes from the central pile. The structure of the new bridge is characterised by a spatial reticular beam supported by branching trellis structures. Extending primarily in a longitudinal direction, the new structure is composed of a sequence of triangles arranged in all three spatial axes, covering a width of 2.50 metres at walkway height and a total length of 57.8 metres
Il nuovo ponte a Corte di Piove di Sacco (Padova)
No full textIl ponte a Corte di Piove di Sacco in provincia di Padova, realizzato in acciaio duplex è frutto di riflessioni che riguardano sia la sua qualità interna, di tipo tecnico-prestazionale, sia quella esterna, di tipo percettivo. Nel 2009 la necessità di sostituire il ponte sul fiume Brenta, a Corte di Piove di Sacco, ormai inadeguato sotto il profilo della sicurezza e della viabilità, si è imposta orientando la scelta tipologica verso uno ad arco a via intermedia.
Il controllo dell’ubicazione del ponte rispetto agli assi viari e fluviali, della tipologia, delle geometrie, della scelta del materiale e del suo trattamento, ha definito il ponte dal punto di vista qualitativo. Infatti, dal progetto all’esecuzione, per tale opera, è stata affrontata non solo la qualità tecnica, in particolar modo per quanto riguarda la durabilità, ma anche quella “esterna”, includendo aspetti percettivi. In tal senso, oggi, il ponte si propone come duplice offerta di paesaggio da un lato, diventando, di fatto, per coloro che lo percepiscono dal territorio, come un landmark che interpreta il passaggio da un paesaggio agricolo ad uno urbano, e dall’altro, per coloro che vi transitano con veicoli, a piedi o in bicicletta, come nuovo possibilità di affaccio sul fiume Brenta, ora percepibile a diverse velocità
Increased ascorbate content delays flowering in long-day grown Arabidopsis thaliana (L.) Heynh
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