|
Orthotropic Deck
An orthotropic bridge or orthotropic deck is typically one whose fabricated deck consists of a structural steel deck plate stiffened either longitudinally with ribs or transversely, or in both directions. This allows the fabricated deck both to directly bear vehicular loads and to contribute to the bridge structure's overall load-bearing behaviour. The orthotropic deck may be integral with or supported on a grid of deck framing members, such as transverse floor beams and longitudinal girders. All these various choices for the stiffening elements, e.g., ribs, floor beams and main girders, can be interchanged, resulting in a great variety of orthotropic panels. Decks with different stiffnesses in longitudinal and transverse directions are called 'orthotropic'. If the stiffnesses are similar in the two directions, then the deck is called 'isotropic'. The steel deck-plate-and-ribs system may be idealized for analytical purposes as an orthogonal-anisotropic plate, hence the abbrev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
US DOT Orthotropic Deck Fabrication
US or Us most often refers to: * ''Us'' (pronoun), the objective case of the English first-person plural pronoun ''we'' * US, an abbreviation for the United States US, U.S., Us, us, or u.s. may also refer to: Arts and entertainment Albums * ''Us'' (Brother Ali album) or the title song, 2009 * ''Us'' (Empress Of album), 2018 * ''Us'' (Mull Historical Society album), 2003 * ''Us'' (Peter Gabriel album), 1992 * ''Us'' (EP), by Moon Jong-up, 2021 * ''Us'', by Maceo Parker, 1974 * ''Us'', mini-album by Peakboy, 2019 Songs * "Us" (James Bay song), 2018 * "Us" (Jennifer Lopez song), 2018 * "Us" (Regina Spektor song), 2004 * "Us" (Gracie Abrams song), 2024 * "Us", by Azealia Banks from '' Fantasea'', 2012 * "Us", by Celine Dion from ''Let's Talk About Love'', 1997 * "Us", by Gucci Mane from '' Delusions of Grandeur'', 2019 * "Us", by Spoon from '' Hot Thoughts'', 2017 Other media * US Festival, two 1980s California music festivals organized by Steve Wozniak * ''Us'' (1991 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Institute Of Steel Construction
The American Institute of Steel Construction (AISC) is a not-for-profit technical institute and trade association for the use of structural steel in the construction industry of the United States. AISC publishes the Steel Construction Manual, an authoritative volume on steel building structure design that is referenced in all U.S. building codes. The organization works with government agencies, policymakers, and other stakeholders to promote policies and regulations that support the industry's growth and development. History Foundation In 1911, two civil engineering organizations, the Bridge Builders Society and the Structural Steel Society, began cooperating to form broad codes of ethics and practices within the profession. In 1917, during World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Centr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suez Canal
The Suez Canal (; , ') is an artificial sea-level waterway in Egypt, Indo-Mediterranean, connecting the Mediterranean Sea to the Red Sea through the Isthmus of Suez and dividing Africa and Asia (and by extension, the Sinai Peninsula from the rest of Egypt). The canal is a key trade route between Europe and Asia. In 1858, French diplomat Ferdinand de Lesseps formed the Suez Canal Company, Compagnie de Suez for the express purpose of building the canal. Construction of the canal lasted from 1859 to 1869. The canal officially opened on 17 November 1869. It offers vessels a direct route between the Atlantic Ocean#North Atlantic, North Atlantic and northern Indian Ocean, Indian oceans via the Mediterranean Sea and the Red Sea, avoiding the South Atlantic and southern Indian oceans and reducing the journey distance from the Arabian Sea to London by approximately , to 10 days at or 8 days at . The canal extends from the northern terminus of Port Said to the southern terminus of Port ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
El Ferdan Railway Bridge
The El Ferdan Railway Bridge is a swing bridge that spans the western shipping lane of the Suez Canal near Ismailia, Egypt. It is the longest swing bridge in the world, with a span of . The bridge was not functional for a while due to the expansion of the Suez Canal completed in 2015 which added a parallel shipping lane just east of the existing bridge, cutting off the railway into Sinai. As of 2021 a second swing bridge spanning the new eastern shipping lane was under construction and started operating in 2024. History The first El Ferdan Railway Bridge over the Suez Canal was completed in April 1918 for the Sinai Military Railway.Hughes, 1981, page 17 It was considered a hindrance to shipping so after the First World War it was removed. A steel swing bridge was built in 1942 (during the Second World War), but this was damaged by a steamship and removed in 1947. A double swing bridge was completed in 1954 but the 1956 Anglo-Franco-Israeli war with Egypt severed rail traffic a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moveable Bridge
A moveable bridge, or movable bridge, is a bridge that moves to allow passage for boats or barges. In American English, the term is synonymous with , and the latter is the common term, but drawbridge can be limited to the narrower, historical definition used in some other forms of English, in which ''drawbridge'' refers to only a specific type of moveable bridge often found in castles. An advantage of making bridges moveable is the lower cost, due to the absence of high piers and long approaches. The principal disadvantage is that the traffic on the bridge must be halted when it is opened for passage of traffic on the waterway. For seldom-used railroad bridges over busy channels, the bridge may be left open and then closed for train passages. For small bridges, bridge movement may be enabled without the need for an engine. Some bridges are operated by the users, especially those with a boat, others by a bridgeman (or bridge tender); a few are remotely controlled using video-c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bascule Bridge
A bascule bridge (also referred to as a drawbridge or a lifting bridge) is a moveable bridge with a counterweight that continuously balances a span, or leaf, throughout its upward swing to provide clearance for boat traffic. It may be single- or double-leafed. The name comes from the French term for balance scale, which employs the same principle. Bascule bridges are the most common type of movable span because they open quickly and require relatively little energy to operate, while providing the possibility for unlimited vertical clearance for marine traffic. History Bascule bridges have been in use since ancient times, but until the adoption of steam power in the 1850s, very long, heavy spans could not be moved quickly enough for practical application. Types There are three types of bascule bridge and the counterweights to the span may be located above or below the bridge deck. The fixed-trunnion (sometimes a "Chicago" bascule) rotates around a large axle that raises ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Akashi Kaikyō Bridge
The is a suspension bridge that links the city of Kobe on the Japanese island of Honshu and on Awaji Island. It is part of the Kobe-Awaji-Naruto Expressway, and crosses the busy and turbulent Akashi Strait (''Akashi Kaikyō'' in Japanese). It was completed in 1998, and at the time, was the longest central span of any suspension bridge in the world, at . Currently, it is the second-longest, behind the 1915 Çanakkale Bridge in Turkey that was opened in March 2022. The Akashi Kaikyo Bridge is one of the key links of the Honshū–Shikoku Bridge Project, which created three routes across the Seto Inland Sea. History Background The Akashi Kaikyo Bridge forms part of the Kobe-Awaji-Naruto Expressway, the easternmost route of the bridge system linking the islands of Honshu and Shikoku. The bridge crosses the Akashi Strait (width 4 km) between Kobe on Honshu and Iwaya on Awaji Island; the other major part of the crossing is completed by the Ōnaruto Bridge, which link ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridge Launching
Incremental launch is a method in civil engineering of building a complete Deck (bridge), bridge deck from one abutment of the bridge only, manufacturing the Superstructure#Bridges, superstructure of the bridge by sections to the other side. In current applications, the method is highly mechanised and uses pre-stressed concrete. History The first bridge to have been incrementally launched appears to have been the Waldshut–Koblenz Rhine Bridge, a wrought iron lattice truss bridge, lattice truss railway bridge, completed in 1859. The second incrementally launched bridge was the Rhine Bridge, Kehl, Rhine Bridge, a railway bridge that spanned the Upper Rhine between Kehl, Germany and Strasbourg, France, completed in 1861 and subsequently destroyed and rebuilt on several occasions. The first incrementally launched concrete bridge was the Span (architecture), span box girder bridge over the Caroní River, completed in 1964. The second incrementally launched concrete bridge was ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Millau Viaduct
The Millau Viaduct (, ) is a multispan cable-stayed bridge completed in 2004 across the Canyon, gorge valley of the Tarn (river), Tarn near (west of) Millau in the Aveyron department in the Occitania (administrative region), Occitanie Region, in Southern France. The design team was led by engineer Michel Virlogeux and English people, English architect Norman Foster, Baron Foster of Thames Bank, Norman Foster. it is the List of tallest bridges, tallest bridge in the world, having a structural height of . The Millau Viaduct is part of the A75 autoroute, A75–A71 autoroute axis from Paris to Béziers and Montpellier. The cost of construction was approximately (). It was built over three years, formally inaugurated on 14 December 2004, and opened to traffic two days later on 16 December. The bridge has been consistently ranked as one of the greatest engineering achievements of modern times, and received the 2006 Outstanding Structure Award from the International Association for B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pontoon Bridge
A pontoon bridge (or ponton bridge), also known as a floating bridge, is a bridge that uses float (nautical), floats or shallow-draft (hull), draft boats to support a continuous deck for pedestrian and vehicle travel. The buoyancy of the supports limits the maximum load that they can carry. Most pontoon bridges are temporary and used in wartime and civil emergencies. There are permanent pontoon bridges in civilian use that can carry highway traffic; generally, the relatively high potential for collapse and sinking (e.g. due to waves and collisions) and high continuous maintenance costs makes pontoons unattractive for most civilian construction. Permanent floating bridges are useful for sheltered water crossings if it is not considered economically feasible to suspend a bridge from anchored Pier (architecture), piers (such as in deep water). Such bridges can require a section that is elevated or can be raised or removed to allow waterborne traffic to pass. Notable permanent pontoo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Movable Bridge
A moveable bridge, or movable bridge, is a bridge that moves to allow passage for boats or barges. In American English, the term is synonymous with , and the latter is the common term, but drawbridge can be limited to the narrower, historical definition used in some other forms of English, in which ''drawbridge'' refers to only a specific type of moveable bridge often found in castles. An advantage of making bridges moveable is the lower cost, due to the absence of high piers and long approaches. The principal disadvantage is that the traffic on the bridge must be halted when it is opened for passage of traffic on the waterway. For seldom-used railroad bridges over busy channels, the bridge may be left open and then closed for train passages. For small bridges, bridge movement may be enabled without the need for an engine. Some bridges are operated by the users, especially those with a boat, others by a bridgeman (or bridge tender); a few are remotely controlled using video-cam ... [...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 structural load, loads partially into a horizontal thrust restrained by the abutments at either side, and partially into a vertical load on the arch supports. 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 Greece, 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 Ancient Rome, Romans were – as with the Vault (architecture), vault and the dome – the first to fully realize the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
