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GFRP Lleida Pedestrian Bridge
The FRP Pedestrian Bridge or in Lleida, Spain is the longest arch bridge made out of standard GFRP pultruded profiles. The bridge spanning the Madrid-Barcelona high-speed rail link won the international “Footbridge Award 2005” in the category “Technology” for medium span (30m-75m) bridges. Description The structure is a tied-arch long and rises . The deck is wide. The bridge is entirely made out of GFRP pultruded profiles. The arch configuration was chosen so as to minimize serviceability problems due to the low modulus of elasticity Elasticity often refers to: *Elasticity (physics), continuum mechanics of bodies that deform reversibly under stress Elasticity may also refer to: Information technology * Elasticity (data store), the flexibility of the data model and the cl ... of GFRP profiles. The choice of GFRP was influenced by the fact that the material is an electrical insulator and eliminates magnetic interference with the electrified railway. The glass fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lleida
Lleida (, ; Spanish: Lérida ) is a city in the west of Catalonia, Spain. It is the capital city of the province of Lleida. Geographically, it is located in the Catalan Central Depression. It is also the capital city of the Segrià comarca, as well as the largest city in the province. It had 137,387 inhabitants , including the contiguous towns of Raimat and Sucs. Lleida is one of the oldest towns in Catalonia, with recorded settlements dating back to the Bronze Age period. Until the Roman conquest of the Iberian Peninsula, the area served as a settlement for an Iberian people, the Ilergetes. The town became a municipality, named Ilerda, under the reign of Augustus. It was ruled by the Moors from the 8th century, and reconquered in 1149. In 1297, the University of Lleida was founded, becoming the third oldest in the whole of Spain. During the following centuries, the town was damaged by several wars such as the Reapers' War in the 17th century and the Spanish Civil War in the 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pedelta Structural Engineers
PEDELTA is an independent multinational consultant firm headquartered in Barcelona, Spain which provides worldwide bridge and structural engineering services. The company is present in Canada, Colombia, Panama, Peru, Spain and the USA. The firm is internationally recognized by the introduction of advanced materials on bridges such as Cala Galdana Bridge, the first duplex stainless steel bridge, the GFRP Lleida Pedestrian Bridge, its innovative bridge aesthetics such as the Abetxuko Bridge and other cable supported structures. History The company was founded in Barcelona, (Spain) by Juan Sobrino in 1994 focus on bridge and structural design. The firm expanded to Colombia in 2001, the US in 2006, Canada in 2012 and Peru in 2013. In 2017 they started their geotechnical department in Colombia. Introduction of advanced materials PEDELTA is worldwide known for the introduction of GFRP and Stainless Steel as a main structural materials on bridges and building structures. The firm has d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juan Sobrino
Juan Sobrino is a civil engineer, known internationally for designing more than 400 bridges, introduction of advanced materials in bridges and innovative bridge designs. He is the founder of Pedelta, an international structural engineering firm. Sobrino was an adjunct professor at Carnegie Mellon University from 2010 to 2012, and a part-time associate professor at Polytechnic University of Catalonia. Education Dr. Sobrino studied Civil Engineering at Technical University of Catalonia (UPC), and earned Master of Science in 1990. He went on to pursue a PhD in Civil Engineering. He has been actively involved in sharing his industry experience and research experience with students and young engineers as he is frequently invited as a guest speaker in Civil Engineering departments of universities including Princeton and the University of Notre Dame in Indiana. Career Dr. Sobrino founded Pedelta immediately after earning his PhD in 1994. Since then, he has been involved in design of ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tied-arch Bridge
A tied-arch bridge is an arch bridge in which the outward horizontal forces of the arch(es) caused by tension at the arch ends to a foundation are countered by equal tension of its own gravity plus any element of the total deck structure such great arch(es) support. The arch(es) have strengthened chord(s) that run to a strong part of the deck structure or to independent tie-rods below the arch ends. Description Thrusts downwards on a tied-arch bridge deck are translated, as tension, by vertical ties between the deck and the arch, tending to flatten it and thereby to push its tips outward into the abutments, like for other arch bridges. However, in a tied-arch or bowstring bridge, these movements are restrained not by the abutments but by the strengthened chord, which ties these tips together, taking the thrusts as tension, rather like the string of a bow that is being flattened. Therefore, the design is also called a bowstring-arch or bowstring-girder bridge. The elimination o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arch Bridge
An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct (a long bridge) may be made from a series of arches, although other more economical structures are typically used today. History Possibly the oldest existing arch bridge is the Mycenaean Arkadiko Bridge in Greece from about 1300 BC. The stone corbel arch bridge is still used by the local populace. The well-preserved Hellenistic Eleutherna Bridge has a triangular corbel arch. The 4th century BC Rhodes Footbridge rests on an early voussoir arch. Although true arches were already known by the Etruscans and ancient Greeks, the Romans were – as with the vault and the dome – the first to fully realize the potential of arches for bridge construction. A list of Roman bridges compiled by the engineer Colin O'Connor featur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fiberglass
Fiberglass (American English) or fibreglass (Commonwealth English) is a common type of fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened into a sheet called a chopped strand mat, or woven into glass cloth. The plastic matrix may be a thermoset polymer matrix—most often based on thermosetting polymers such as epoxy, polyester resin, or vinyl ester resin—or a thermoplastic. Cheaper and more flexible than carbon fiber, it is stronger than many metals by weight, non- magnetic, non-conductive, transparent to electromagnetic radiation, can be molded into complex shapes, and is chemically inert under many circumstances. Applications include aircraft, boats, automobiles, bath tubs and enclosures, swimming pools, hot tubs, septic tanks, water tanks, roofing, pipes, cladding, orthopedic casts, surfboards, and external door skins. Other common names for fiberglass are glass-reinforced plastic (GRP), glass-fiber reinforced plastic (GFRP) or GF ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madrid–Barcelona High-speed Rail Line
The Madrid–Barcelona high-speed rail line is a standard gauge railway line inaugurated on 20 February 2008. Designed for speeds of and compatibility with neighbouring countries' rail systems, it connects the cities of Madrid and Barcelona in 2 hours 30 minutes. In Barcelona the line is connected with the Perpignan–Barcelona high-speed rail line leading into France which connects it to the European high speed network. Trains are operated by the national railway Renfe under the AVE and Avlo brands, and by private competitors Ouigo España and Iryo. First stages In 2003 construction of the first phase of a new standard gauge line from Madrid to the French border (Madrid–Zaragoza–Lleida) was completed and on 11 October of that year commercial service began. This service also stopped at Guadalajara–Yebes and Calatayud. The service began running at only . On 19 May 2006, after two years of operation, speed was increased to when the Spanish ASFA signalling system was r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elasticity (physics)
In physics and materials science, elasticity is the ability of a body to resist a distorting influence and to return to its original size and shape when that influence or force is removed. Solid objects will deform when adequate loads are applied to them; if the material is elastic, the object will return to its initial shape and size after removal. This is in contrast to ''plasticity'', in which the object fails to do so and instead remains in its deformed state. The physical reasons for elastic behavior can be quite different for different materials. In metals, the atomic lattice changes size and shape when forces are applied (energy is added to the system). When forces are removed, the lattice goes back to the original lower energy state. For rubbers and other polymers, elasticity is caused by the stretching of polymer chains when forces are applied. Hooke's law states that the force required to deform elastic objects should be directly proportional to the distance of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arch Bridges
An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct (a long bridge) may be made from a series of arches, although other more economical structures are typically used today. History Possibly the oldest existing arch bridge is the Mycenaean Arkadiko Bridge in Greece from about 1300 BC. The stone corbel arch bridge is still used by the local populace. The well-preserved Hellenistic Eleutherna Bridge has a triangular corbel arch. The 4th century BC Rhodes Footbridge rests on an early voussoir arch. Although true arches were already known by the Etruscans and ancient Greeks, the Romans were – as with the vault and the dome – the first to fully realize the potential of arches for bridge construction. A list of Roman bridges compiled by the engineer Colin O'Connor features 330 Ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tied Arch Bridges
A tied-arch bridge is an arch bridge in which the outward horizontal forces of the arch(es) caused by tension at the arch ends to a foundation are countered by equal tension of its own gravity plus any element of the total deck structure such great arch(es) support. The arch(es) have strengthened chord(s) that run to a strong part of the deck structure or to independent tie-rods below the arch ends. Description Thrusts downwards on a tied-arch bridge deck are translated, as tension, by vertical ties between the deck and the arch, tending to flatten it and thereby to push its tips outward into the abutments, like for other arch bridges. However, in a tied-arch or bowstring bridge, these movements are restrained not by the abutments but by the strengthened chord, which ties these tips together, taking the thrusts as tension, rather like the string of a bow that is being flattened. Therefore, the design is also called a bowstring-arch or bowstring-girder bridge. The elimination o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges In Catalonia
A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually something that is otherwise difficult or impossible to cross. There are many different designs of bridges, each serving a particular purpose and applicable to different situations. Designs of bridges vary depending on factors such as the function of the bridge, the nature of the terrain where the bridge is constructed and anchored, and the material used to make it, and the funds available to build it. The earliest bridges were likely made with fallen trees and stepping stones. The Neolithic people built boardwalk bridges across marshland. The Arkadiko Bridge (dating from the 13th century BC, in the Peloponnese) is one of the oldest arch bridges still in existence and use. Etymology The ''Oxford English Dictionary'' traces the origin of the wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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