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The tie is usually the deck and is capable of withstanding the horizontal thrust forces which would normally be exerted on the abutments of an arch bridge. The deck is suspended from the arch. The arch is in compression, in contrast to a suspension bridge where the catenary is in tension. A tied-arch bridge can also be a through arch bridge.
A tied-arch bridge is an arch bridge in which the outward-directed horizontal forces of the arch(es) are borne as tension by a chord tying the arch ends rather than by the ground or the bridge foundations. This strengthened chord may be the deck structure itself or consist of separate, independent tie-rods.
New River Gorge Bridge has the longest free span of all deck arch bridges: 518 m. This is the timeline of the 3 longest supported deck arch bridge spans in the world, where the road deck lies on top of the arch. The deck is supported by columns, truss, rubble or lies directly on the arch. These bridges are often found in narrow valleys.
Arch bridges in which the deck is carried above the arch, in other words the deck is supported by the arch. See also Category:Roman bridges . Wikimedia Commons has media related to Deck arch bridges .
A well-known example of this type is the Sydney Harbour Bridge in Australia, which is based on the Hell Gate Bridge in New York City. [2] Other bridges include the Chaotianmen Bridge in China, the world's longest through arch bridge; [3] Tyne Bridge of Newcastle upon Tyne; the Bayonne Bridge that connects New York City to New Jersey, which is longer than the Sydney Harbour Bridge; the Ahwaz ...
The Pont Alexandre III (French pronunciation: [pɔ̃ alɛksɑ̃dʁ tʁwa]) is a deck arch bridge that spans the Seine in Paris. It connects the Champs-Élysées quarter with those of the Invalides and Eiffel Tower. The bridge is widely regarded as the most ornate, extravagant bridge in the city.
The bridge deck is supported by a third structural element hanging underneath. They are named for the German engineer Hermann Lohse (1815–1893) who developed them in the late 19th century. The correct name of tied arch bridges with inclined hangers that cross each other at most once is Nielsen bridge.
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