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Infante Dom Henrique Bridge
The Infante Dom Henrique Bridge ( pt, Ponte Infante Dom Henrique), commonly known as Infante Bridge ( pt, Ponte do Infante), is a road bridge across the Douro River in Greater Porto, Portugal. The bridge is upriver from the Dom Luís I Bridge and downriver from the Maria Pia Bridge. Completed in 2003, the Infante Bridge carries vehicle and pedestrian traffic from Vila Nova de Gaia to Central Porto. The bridge was constructed as a replacement for the upper deck of the Dom Luís I Bridge that was closed to vehicle traffic in 2003 to allow for its conversion to the D Line of the Porto Metro The Porto Metro ( pt, Metro do Porto), part of the public transport (mass transit) system of Porto, Portugal, is a light rail network that runs underground in central Porto and above ground into the city's suburbs. ''Metro do Porto S.A.'' was f .... The bridge has a total length of and an arch span of . The bridge's height is above the Douro River, but the height of the arch is only abo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douro River
The Douro (, , ; es, Duero ; la, Durius) is the highest-flow river of the Iberian Peninsula. It rises near Duruelo de la Sierra in Soria Province, central Spain, meanders south briefly then flows generally west through the north-west part of central Spain and into northern Portugal, to its mouth at Porto, the second largest city of Portugal. At its mouth it meets the Atlantic Ocean. The scenic Douro railway line runs close to the river. Adjacent areas produce port (a mildly fortified wine) and other agricultural produce. A small tributary of the river has the Côa Valley Paleolithic Art site which is considered important to the archaeological pre-historic patrimony, designated a UNESCO World Heritage Site. Within Spain, it flows through the middle of the autonomous community of Castile and León, with the basin spanning through the northern half of the Meseta Central. The latter includes wine producing areas such as the Ribera del Duero DOP. History The Latin name ''D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metropolitan Area Of Porto
The Porto Metropolitan Area ( pt, Área Metropolitana do Porto; abbreviated as AMP) is a metropolitan area in northern Portugal centered on the City of Porto, Portugal's second largest city.Fernanda Paula Oliveira (2009), The metropolitan area, covering 17 municipalities, is the second largest urban area in the country and one of the largest in the European Union, with a population in 2011 of 2,421,038 in an area of 2,040.31 km². The Porto Metropolitan Area is a major economic engine in Portugal, with a very high HDI (Human Development Index) and a GDP above the European average. Porto has been Portugal's largest manufacturing region since the Industrial Revolution and is home to many of the country's largest corporations. History The original ''Metropolitan Area of Porto'' was constituted by nine municipalities: Porto (the capital), Espinho, Gondomar, Maia, Matosinhos, Póvoa de Varzim, Vila Nova de Gaia, Valongo, and Vila do Conde. The process of enlargement: * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porto
Porto or Oporto () is the second-largest city in Portugal, the capital of the Porto District, and one of the Iberian Peninsula's major urban areas. Porto city proper, which is the entire municipality of Porto, is small compared to its metropolitan area, with an estimated population of just 231,800 people in a municipality with only 41.42 km2. Porto's metropolitan area has around 1.7 million people (2021) in an area of ,Demographia: World Urban Areas March 2010 making it the second-largest urban area in Portugal. It is recognized as a global city with a Gamma + rating from the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vila Nova De Gaia
Vila Nova de Gaia (; cel-x-proto, Cale), or simply Gaia, is a city and a municipality in Porto District in Norte Region, Portugal. It is located south of the city of Porto on the other side of the Douro River. The city proper had a population of 178,255 in 2001. The municipality has an area of 168.46 km². and a total population of 302,295 inhabitants (2011), making it the most populous municipality in Norte Region. Gaia along with Porto and 12 other municipalities make up the commonly designated Porto Metropolitan Area. The city contains many cellars (locally known as "caves") where port wine is stored and aged. These cellars have become a major tourist attraction. History Vila Nova de Gaia already existed under the Roman Empire as the city of Cale. It developed most likely from a preexistent Celtic Castro, or Neolithic settlement. The origin of the name Cale (or Gale, since in Classical Latin there was not always a clear distinction between the letters "g" and "c" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prince Henry The Navigator
''Dom'' Henrique of Portugal, Duke of Viseu (4 March 1394 – 13 November 1460), better known as Prince Henry the Navigator ( pt, Infante Dom Henrique, o Navegador), was a central figure in the early days of the Portuguese Empire and in the 15th-century European maritime discoveries and maritime expansion. Through his administrative direction, he is regarded as the main initiator of what would be known as the Age of Discovery. Henry was the fourth child of the Portuguese King John I, who founded the House of Aviz. After procuring the new caravel ship, Henry was responsible for the early development of Portuguese exploration and maritime trade with other continents through the systematic exploration of Western Africa, the islands of the Atlantic Ocean, and the search for new routes. He encouraged his father to conquer Ceuta (1415), the Muslim port on the North African coast across the Straits of Gibraltar from the Iberian Peninsula. He learned of the opportunities offered by th ... [...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 features ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reinforced Concrete
Reinforced concrete (RC), also called reinforced cement concrete (RCC) and ferroconcrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel bars (rebar) and is usually embedded passively in the concrete before the concrete sets. However, post-tensioning is also employed as a technique to reinforce the concrete. In terms of volume used annually, it is one of the most common engineering materials. In corrosion engineering terms, when designed correctly, the alkalinity of the concrete protects the steel rebar from corrosion. Description Reinforcing schemes are generally designed to resist tensile stresses in particular regions of the concrete that might cause unacceptable cracking and/or structural failure. Modern reinforced concrete can contain varied reinforcing materials made ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portugal
Portugal, officially the Portuguese Republic, In recognized minority languages of Portugal: :* mwl, República Pertuesa is a country located on the Iberian Peninsula, in Southwestern Europe, and whose territory also includes the Macaronesian archipelagos of the Azores and Madeira. It features the westernmost point in continental Europe, its mainland west and south border with the North Atlantic Ocean and in the north and east, the Portugal-Spain border, constitutes the longest uninterrupted border-line in the European Union. Its archipelagos form two autonomous regions with their own regional governments. On the mainland, Alentejo region occupies the biggest area but is one of the least densely populated regions of Europe. Lisbon is the capital and largest city by population, being also the main spot for tourists alongside Porto, the Algarve and Madeira. One of the oldest countries in Europe, its territory has been continuously settled and fought over since prehistoric tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dom Luís I Bridge
The Dom Luís I Bridge ( pt, Ponte de Dom Luís I), or Luís I Bridge, is a double-deck metal arch bridge that spans the River Douro between the cities of Porto and Vila Nova de Gaia in Portugal. At its construction, its span was the longest of its type in the world. It has been confused with the nearby Maria Pia Bridge, a railway bridge that was built 9 years earlier (and is located to the east), which is similar in aspect to the Luís I bridge. History In 1879, Gustave Eiffel presented a project to construct a new bridge over the Douro, with a high single deck in order to facilitate ship navigation. This project was rejected due to dramatic growth of the urban population, which required a re-thinking of the limits of a single-deck platform. A competition was initiated in November 1880, in order to construct a double-deck metal bridge, which included projects by Compagnie de Fives-Lille, Cail & C., Schneider & Co., Gustave Eiffel, Lecoq & Co., Société de Braine-le-Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maria Pia Bridge
The Maria Pia Bridge (in Portuguese ''Ponte de D. Maria Pia'', commonly known as ''Ponte de Dona Maria Pia'') is a railway bridge built in 1877, and attributed to Gustave Eiffel, situated over the Portuguese northern municipalities of Porto and Vila Nova de Gaia. Part of the Linha Norte system of the national railway, the wrought iron, double-hinged, crescent arch spans , over the Douro River. At the time of its construction, it was the longest single-arch span in the world; today, it is no longer used for rail transport and was replaced by a modern structure in 1991. It is often confused with the D. Luís Bridge, which was built nine years later and is located to the west, but resembles the structure, albeit with two decks. History In 1875, the Royal Portuguese Railway Company announced a competition for a bridge to carry the Lisbon to Porto railway across the river Douro. This was very technically demanding: the river was fast-flowing, its depth could be as much as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porto Metro
The Porto Metro ( pt, Metro do Porto), part of the public transport (mass transit) system of Porto, Portugal, is a light rail network that runs underground in central Porto and above ground into the city's suburbs. ''Metro do Porto S.A.'' was founded in 1993, and the first line of the system opened in 2002.Webb, Mary (ed.) (2009). ''Jane's Urban Transport Systems 2009–2010'', p. 277. Coulsdon, Surrey (UK): Jane's Information Group. . The network has 6 lines and reaches seven municipalities within the metropolitan Porto area: Porto, Gondomar, Maia, Matosinhos, Póvoa de Varzim, Vila do Conde and Vila Nova de Gaia. It currently has a total of 82 operational stations across of double track commercial line. Most of the system is at ground level or elevated, but of the network is underground. The system is run by ViaPORTO. History Line A (blue line) between Senhor de Matosinhos and Trindade in central Porto was the first Porto Metro line to open, in 2002. The line was exte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Maillart
Robert Maillart (16 February 1872 – 5 April 1940) was a Swiss civil engineer who revolutionized the use of structural reinforced concrete with such designs as the three-hinged arch and the deck-stiffened arch for bridges, and the beamless floor slab and mushroom ceiling for industrial buildings. His Salginatobel (1929–1930) and Schwandbach (1933) bridges changed the aesthetics and engineering of bridge construction dramatically and influenced decades of architects and engineers after him. In 1991 the Salginatobel Bridge was declared an International Historic Civil Engineering Landmark by the American Society of Civil Engineers. Early life and education Robert Maillart was born on 6 February 1872 in Bern, Switzerland. He attended the Federal Institute of Technology in Zurich and studied structural engineering at Zurich ETH from 1890 to 1894, lectures by Wilhelm Ritter on graphical statics forming part of the curriculum. Maillart did not excel in academic theories ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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