|
Schwanentorbrücke
The ''Schwanentorbrücke ''is a vertical-lift bridge in Duisburg, North Rhine-Westphalia, Germany, that crosses the Duisburg Inner Harbour. The bridge can be vertically raised to allow cargo ships to access the inner city, and lowered to allow cars, trains and pedestrians to cross. The bridge is named after the Schwanenturm (meaning 'watch tower) that protected the city walls in the 13th and 14th centuries. History Before the Schwanentorbrücke was constructed, a smaller bridge was used by pedestrians and traders. In 1844, a bridge with train tracks was built, and from 1926 to 1929, it was continuously widened and improved. The Schwanentorbrücke was designed by Hans-Siegfried Persch and completed in 1950. When the city updated the trains in Duisburg they also updated and improved the bridge. These improvements were done with plans by Foster & Partner. The transportation industry moved out of the city, meaning the bridge no longer needs to be raised. Workers began a two-stage r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Duisburg Inner Harbour
The Innenhafen (Inner Harbour) in Duisburg, Germany, is connected to the Rhine River, encompasses an area of 89ha. For over a hundred years during the high point of the Industrial Revolution, it was the central harbour and trading point of the town. Since the mid 1960s, the importance of the harbour declined and it lay in a disused condition for 20 years, before plans for renovation were drawn up. This former industrial area has been fundamentally transformed, a process which started as a part of the International Building Exhibition Emscher Park (IBA) which ran from 1989 until 1999. The basis for this model of development in the Ruhr district was delivered in 1994 by the British architect Norman Foster. Since then, the Inner Harbor has transformed itself into a district combining employment, housing, culture and water-based leisure activities. Today, the Inner Harbour is both industrial heritage and a main stop on the Route der Industriekultur. History Where the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel
Steel is an alloy made up of iron with added carbon to improve its strength and fracture resistance compared to other forms of iron. Many other elements may be present or added. Stainless steels that are corrosion- and oxidation-resistant typically need an additional 11% chromium. Because of its high tensile strength and low cost, steel is used in buildings, infrastructure, tools, ships, trains, cars, machines, electrical appliances, weapons, and rockets. Iron is the base metal of steel. Depending on the temperature, it can take two crystalline forms (allotropic forms): body-centred cubic and face-centred cubic. The interaction of the allotropes of iron with the alloying elements, primarily carbon, gives steel and cast iron their range of unique properties. In pure iron, the crystal structure has relatively little resistance to the iron atoms slipping past one another, and so pure iron is quite ductile, or soft and easily formed. In steel, small amounts of carb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Duisburg
Duisburg () is a city in the Ruhr metropolitan area of the western German state of North Rhine-Westphalia. Lying on the confluence of the Rhine and the Ruhr rivers in the center of the Rhine-Ruhr Region, Duisburg is the 5th largest city in North Rhine-Westphalia and the 15th-largest city in Germany. In the Middle Ages, it was a city-state and a member of the Hanseatic League, and later became a major centre of iron, steel, and chemicals industries. For this reason, it was heavily bombed in World War II. Today it boasts the world's largest inland port, with 21 docks and 40 kilometres of wharf. Status Duisburg is a city in Germany's Rhineland, the fifth-largest (after Cologne, Düsseldorf, Dortmund and Essen) of the nation's most populous federal state of North Rhine-Westphalia. Its 500,000 inhabitants make it Germany's 15th-largest city. Located at the confluence of the Rhine river and its tributary the Ruhr river, it lies in the west of the Ruhr urban area, Germany's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertical-lift Bridge
A vertical-lift bridge or just lift bridge is a type of movable bridge in which a span rises vertically while remaining parallel with the deck. The vertical lift offers several benefits over other movable bridges such as the bascule and swing-span bridges. Generally speaking, they cost less to build for longer moveable spans. The counterweights in a vertical lift are only required to be equal to the weight of the deck, whereas bascule bridge counterweights must weigh several times as much as the span being lifted. As a result, heavier materials can be used in the deck, and so this type of bridge is especially suited for heavy railroad use. The biggest disadvantage to the vertical-lift bridge (in comparison with many other designs) is the height restriction for vessels passing under it, due to the deck remaining suspended above the passageway. Although most vertical-lift bridges use towers, each equipped with counterweights, some use hydraulic jacks located below the deck. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Counterweight
A counterweight is a weight that, by applying an opposite force, provides balance and stability of a mechanical system. The purpose of a counterweight is to make lifting the load faster and more efficient, which saves energy and causes less wear and tear on the lifting machine. Counterweights are often used in traction lifts (elevators), cranes and fun fair rides. In these applications, the expected load multiplied by the distance that load will be spaced from the central support (called the "tipping point") must be equal to the counterweight's mass times its distance from the tipping point in order to prevent over-balancing either side. This distance times mass is called the load moment. A counterbalance is a weight or force that balances or offsets another as when two objects of equal weight, power, or influence are acting in opposition to each other. The objects are then said to be in counterbalance. Counterweights in action Trebuchet: There are five major components of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges In Germany
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] |
Rhine Basin
), Surselva, Graubünden, Switzerland , source1_coordinates= , source1_elevation = , source2 = Rein Posteriur/Hinterrhein , source2_location = Paradies Glacier, Graubünden, Switzerland , source2_coordinates= , source2_elevation = , source_confluence = Reichenau , source_confluence_location = Tamins, Graubünden, Switzerland , source_confluence_coordinates= , source_confluence_elevation = , mouth = North Sea , mouth_location = Netherlands , mouth_coordinates = , mouth_elevation = , progression = , river_system = , basin_size = , tributaries_left = , tributaries_right = , custom_label = , custom_data = , extra = The Rhine ; french: Rhin ; nl, Rijn ; wa, Rén ; li, Rien; rm, label=Sursilvan, Rein, rm, label=Sutsilvan and Surmiran, Ragn, rm, label=Rumantsch Grischun, Vallader and Puter, Rain; it, Reno ; gsw, Rhi(n), including i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
