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A double-beam drawbridge, seesaw or folding bridge is a movable bridge . It opens by rotation about a horizontal axis parallel to the water. Historically, the double-beam drawbridge has emerged from the drawbridge. Unlike a drawbridge, a double-beam drawbridge has counterweights, so that opening requires much less energy. Unlike the bascule ...
Animation showing the operation of a drawbridge. A drawbridge or draw-bridge is a type of moveable bridge typically at the entrance to a castle or tower surrounded by a moat.In some forms of English, including American English, the word drawbridge commonly refers to all types of moveable bridges, such as bascule bridges, vertical-lift bridges and swing bridges, but this article concerns the ...
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.
Double-beam drawbridge; Drawbridge (British English definition) – the bridge deck is hinged on one end; Bascule bridge – a drawbridge hinged on pins with a counterweight to facilitate raising; road or rail Rolling bascule bridge – an unhinged drawbridge lifted by the rolling of a large gear segment along a horizontal rack
The double-beam drawbridge was built in the first half of the 19th century to expand the network of canals to the Mediterranean Sea. Locks and bridges were built, too, to manage water and road traffic. Just outside Arles, the first bridge was the officially titled "Pont de Réginel" but better known by the keeper's name as "Pont de Langlois".
Each bridge section is made up of concrete beams with steel cables running through ducts inside it. On the end of each beam, the steel cables are tightened, compressing the concrete, and locked in ...
Langlois Bridge (French: Pont de Langlois) was a double-beam drawbridge in Arles, France, which was the subject of several paintings by Vincent van Gogh in 1888. Being one of eleven drawbridges built by a Dutch engineer along the channel from Arles to Port-de-Bouc, this bridge might have reminded the artist of his homeland.
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