Feliks Pancer był wybitnym polskim inżynierem żyjącym w latach 1798–1851. Był znany ze swoich innowacyjnych i odważnych projektów w tamtych latach. Trzy spośród jego projektów zapewniły mu światowe uznanie w środowisku inżynierów. Dwa doczekały się realizacji: most nad rzeką Wieprz pod Kośminem w 1841 r. oraz wiadukt w ciągu zjazdu do Wisły w Warszawie, nazwany później imieniem projektanta.
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Feliks Pancer was an prominent polish engineer living between 1798–1851. He was famous for his innovative and courageous projects in those years. Between his works, three of them provided him a worldwide recognition in the engineers society. Two of this projects were built: the bridge over the river Wieprz near Kośmin in year 1841 and the viaduct within the exit of Vistula river ni Warsaw, which was later named after its designer.
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The Paderno d’Adda bridge is a historical iron arch bridge built in 1889 for connecting the provinces of Lecco and Bergamo across the Adda river, in northern Italy. The bridge was designed through the so-called Theory of the Ellipse of Elasticity. Its use is two-fold: a railway track lays within the inner deck of its upper continuous beam; automotive traffic runs on top. Today, after 128 years of continuous duty, the viaduct keeps in service, with trains crossing at slow speed and alternated one-way road traffic with no heavy-weight vehicles. Starting from a computational formulation for the elastoplastic Limit Analysis of 3D truss-frame systems, apt to provide the exact limit load multiplier and attached collapse mechanism, the full evolutive piece-wise-linear response of the bridge is derived, for different try-out loading configurations. The structural analysis, wholly original in its computational implementation, aims at outlining a survey on the potential plastic collapse characteristics of the bridge. Results reveal possible structural deficiencies for the upper continuous beam, where main plasticizations appeared. Instead, elements of the piers plasticized only for tests with loading much un-symmetrically located to the crown of the arch and the slender doubly built-in parabolic arch rarely showed some plasticization. This evidences the arch as a robust characteristic beautiful feature of the bridge. Moreover, analyses pointed out that the effect of the normal forces on the elastoplastic response of the bridge shall not be considered as negligible, as instead it may be often considered in the Limit Analysis of frames.
Sporządzono listę pierwszych żelaznych mostów na ziemiach polskich. Podano podstawowe parametry techniczne tych mostów. Nadmieniono, że na naszych ziemiach znajdują się obiekty o wielkim znaczeniu w historii światowego mostownictwa, świadczące o kunszcie inżynierskim naszych poprzedników.
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A list of first iron bridges constructed in homeland of Poland is prepared. Basic technical parameters of the bridges included on the list are presented. It is emphasized that some of these bridges are of importance for the world bridge engineering heritage, proving of an outstanding professional skills of past generation of our bridge engineers.
Przedstawiono słynne mosty zbudowane w XIX wieku w Portugalii, stanowiące dziś cenne zabytki inżynierii mostowej, należące do prekursorskich konstrukcji żelaznych w Europie.
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The famous historic iron bridges built in XIX century in Portugal which nowadays are declared as valuable examples of iron bridge engineering in Europe have been presented.
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