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Skansbron September 2011
Skansbron ( Swedish: "The Fortlet Bridge") is a bascule bridge in central Stockholm, Sweden. Stretching over the canal Hammarbykanalen, it connects the major island Södermalm to the southern mainland district Södra Hammarbyhamnen. Before the lake Hammarbysjön was transformed into a canal in the 1920s, Skanstull, the southern tollgate of the city, was surrounded by fortifications, including a moat over which a simple wooden bridge led into the city. In 1914, the City Council had determined the double traffic load at Slussen, caused by west-east going ships and north-south bound vehicles, would be solved by rerouting the ships south of Södermalm through a canal to be built. Delayed by World War I, the works were finally begun in 1923, and by 1925 a double leaf steel drawbridge was completed. The bridge is 14.9 metres wide with a 10.7-metre wide roadway, and has a horizontal clearance of 12.5 metres. During the construction of the bridge, the north–south traffic flow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slussen
Slussen (') is an area in Stockholm, Sweden, located at the northern edge of Södermalm, adjacent to Gamla stan. It is known for its locks system between Lake Mälaren and the Baltic Sea, as well as its historic role as a major transport interchange. The Slussen area includes the Slussen metro station and Saltsjöbanan terminus, and a bus terminal. The boundary between Uppland and Södermanland runs through the area. History : Slussen has been a vital crossing point in Stockholm for centuries, linking southern roads with the waterways connecting Lake Mälaren to the Baltic Sea. Over time, the area has undergone significant transformations. Early History The first lock at Slussen, known as Queen Christina's Lock, was inaugurated in 1642. It was replaced in 1755 by Christopher Polhem's Lock. Nils Ericson's Lock, built in 1850, followed, allowing ships to traverse the area more efficiently. The final major lock, Karl Johan's Lock, was inaugurated in 1935 as part of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges Completed In 1925
A bridge is a structure built to Span (engineering), span a physical obstacle (such as a body of water, valley, road, or railway) without blocking the path 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, 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 in existence and use. Etymology The ''Oxford English Dictionary'' traces the origin of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bascule Bridges
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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bridges In Stockholm
A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or railway) without blocking the path 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, 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 in existence and use. Etymology The ''Oxford English Dictionary'' traces the origin of the word ''bridge' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fredriksdalsbron
Fredriksdalsbron is a bridge in central Stockholm, Sweden. Serving the light rail line Tvärbanan, it stretches north from the station west of the Gullmarsplan metro station, immediately makes a sharp eastward turn to plunge under two other bridges, Skanstullsbron and Johanneshovsbron, to continue eastward over a viaduct leading down to the station Mårtensdal in the newly built suburb Hammarby sjöstad. During the planning process the project name "Kvarnbron" (''Mill Bridge'') was used. The bridge was built by Nordic Construction Company (NCC) in 2000–2002 as the first part of an extension of the light rail. 379 metres in length, it rests on 15 pillars of which 2 are anchored into the bedrock while the others are steel point-bearing piles. The bridge deck is formed as a non-tensioned reinforced concrete tray rounded underneath.PDF) Abutments and revetments are dressed in slate. The maximum span is 30 metres, and the width varies from 9.4 to 11.4 metres. The longest pillar i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johanneshovsbron
Johanneshovsbron ( Swedish: "The Johanneshov Bridge") is a 756 metres long and 17,9 metres wide road bridge in central Stockholm, Sweden. Overpassing two older bridges, Skansbron and Skanstullsbron, and one newer bridge, Fredriksdalsbron, it connects Södermalm and the tunnel passing under it, Söderledstunneln, to Johanneshov, the district immediately south of the historical city centre, and national road 73, leading out of the city. Brought about by the construction of the tunnel, Johanneshovsbron forms part of one of the major roads passing through the central city, extending north over Centralbron. Running south form the mouth of Söderledstunneln to the west of Skanstull, the bridge runs uphill and somewhat in parallel to Skanstullsbron for some 500 metres before it turns east to pass over its neighbour, between which ramps it finally extends into road 37 underneath the roundabout at Johanneshov. The bridge is made of prestressed concrete, has an average span of 51 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skanstullsbron
Skanstullsbron (Swedish language, Swedish: "The Fortlet Tollgate Bridge") is a bridge in central Stockholm, Sweden. Overpassing the older bridge Skansbron, it connects the major island Södermalm to the southern district Johanneshov. The first proposal for an elevated bridge stretching over the canal Hammarbykanalen was produced in 1921, before work on the lower Skansbron bridge began in 1923. It remained the favoured bridge design to solve the increasing traffic load of the area during the 1920s and 1930s and was approved by the city council in 1939. World War II led to shortage of both finance and material, but work was started in 1944 and the new bridge was inaugurated in 1947. Skanstullsbron is a concrete double viaduct, with one bridge for vehicles and pedestrians and the other for the Stockholm metro, metro. Its total length is 574 metres of which 403 metres consists of the 16 spans of the southern beam bridge. The three central spans, 118, 112, and 106 metres long, offer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Bridges In Stockholm
This is a list of some of the most notable bridges and viaducts in Stockholm, starting with those located closest to the city centre. Many more bridges and viaducts could, of course, be added, including those on the rail transport, rail and motorway networks, and the many Grade separation, grade-separated junctions in the suburbs which are a product of postwar city planning. Over Mälaren and Stockholms ström Over Klara sjö, Barnhusviken and Bällstaviken Over Djurgårdsbrunnsviken Over Årstaviken, Hammarby Sjö and Sicklasjön Over other waterways On Land Historical * Sveabron (where present-day Odengatan passes over Sveavägen) * Nybro (bridge), Nybro or Stora Ladugårdslandsbron (across today's Berzelii Park) * Näckströms bro (connecting Norrmalm and Blasieholmen) Additionally, during the cold winters in the 19th century, ice in the city harbour made it necessary to replace ferries by temporary pontoon bridges sometimes more than 300 m in length. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electricity
Electricity is the set of physical phenomena associated with the presence and motion of matter possessing an electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of either a positive or negative electric charge produces an electric field. The motion of electric charges is an electric current and produces a magnetic field. In most applications, Coulomb's law determines the force acting on an electric charge. Electric potential is the Work (physics), work done to move an electric charge from one point to another within an electric field, typically measured in volts. Electricity plays a central role in many modern technologies, serving in electric power where electric current is used to energise equipment, and in electronics dealing w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viaduct
A viaduct is a specific type of bridge that consists of a series of arches, piers or columns supporting a long elevated railway or road. Typically a viaduct connects two points of roughly equal elevation, allowing direct overpass across a wide valley, road, river, or other low-lying terrain features and obstacles. The term ''viaduct'' is derived from the Latin ''via'' meaning "road", and ''ducere'' meaning "to lead". It is a 19th-century derivation from an analogy with ancient Roman aqueducts. Like the Roman aqueducts, many early viaducts comprised a series of arches of roughly equal length. Over land The longest viaduct in antiquity may have been the Pont Serme which crossed wide marshes in southern France. At its longest point, it measured 2,679 meters with a width of 22 meters. Viaducts are commonly used in many cities that are railroad hubs, such as Chicago, Birmingham, London and Manchester. These viaducts cross the large railroad yards that are needed for freigh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moat
A moat is a deep, broad ditch dug around a castle, fortification, building, or town, historically to provide it with a preliminary line of defence. Moats can be dry or filled with water. In some places, moats evolved into more extensive water defences, including natural or artificial lakes, dams and sluices. In older fortifications, such as hillforts, they are usually referred to simply as ditches, although the function is similar. In later periods, moats or water defences may be largely ornamental. They could also act as a sewer. Historical use Ancient Some of the earliest evidence of moats has been uncovered around ancient Egyptian fortresses. One example is at Buhen, a settlement excavated in Nubia. Other evidence of ancient moats is found in the ruins of Babylon, and in reliefs from ancient Egypt, Assyria, and other cultures in the region. Evidence of early moats around settlements has been discovered in many archaeological sites throughout Southeast Asia, including ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
