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The Arch Bridge at Bellows Falls in New England, built in 1905, is a particularly large example of a three-hinged arch bridge. At 540 feet (160 m) in length it was the longest in America when built. [4] The 1888 Hennepin Avenue Bridge in Minneapolis was unusual in that it was both a two- and three-hinged bridge. The bridge was split ...
Tavanasa Bridge, also known as Vorderrheinbrücke, Tavanasa is the name of the two reinforced concrete three hinged arch bridges designed by Swiss civil engineer Robert Maillart. [6] The first of these was constructed in 1904, but later destroyed by an avalanche. [7] The second, constructed in 1928 stands to this day.
If horizontal thrust is generated but the apex of the arch is a pin joint, this is termed as a three-hinged arch. If no hinge exists at the apex, it will normally be a two-hinged arch. In The Iron Bridge shown below, the structure of each frame emulates the kind of structure that previously had been made of wood. Such a wood structure uses ...
Rossgraben bridge (Rüeggisberg) near Bern, Switzerland, showing the hinge at mid-span of this three-hinged arch. The practical arch bridges are built either as a fixed arch, a two-hinged arch, or a three-hinged arch. [103] The fixed arch is most often used in reinforced concrete bridges and tunnels, which have short spans.
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
Robert Maillart, c. 1925. 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.
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Above the hinge is a portal. A rotating arm, the balance, is attached to the portal high up off the ground. On one side of the balance hangs the counterweight, the balance box, on the other side, the arm is hinged to two vertical beams that are on the other end hinged to the tip of the bridge deck.