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A simple suspension bridge (also rope bridge, swing bridge (in New Zealand), suspended bridge, hanging bridge and catenary bridge) is a primitive type of bridge in which the deck of the bridge lies on two parallel load-bearing cables that are anchored at either end. They have no towers or piers.
Janberg, Nicolas, Suspension bridges, Structurae.de (an extensive database of structures including many suspension bridges) Durkee, Jackson, "World's Longest Bridge Spans", National Steel Bridge Alliance, 24 May 1999 (out of date) The World's Greatest Bridges, Archive.org copy of The Bridge over the Strait of Messina website (out of date and ...
The world's longest suspension bridges are listed according to the length of their main span (i.e., the length of suspended roadway between the bridge's towers). The length of the main span is the most common method of comparing the sizes of suspension bridges, often correlating with the height of the towers and the engineering complexity involved in designing and constructing the bridge. [4]
A suspension bridge is a type of bridge in which the deck is hung below suspension cables on vertical suspenders. The first modern examples of this type of bridge were built in the early 1800s. [5] [6] Simple suspension bridges, which lack vertical suspenders, have a long history in many mountainous parts of the world.
Simple suspension bridge: the earliest known type of suspension bridge, and usually a footbridge. The deck is flexible and lies on the main cables, which are anchored to the earth. Underspanned suspension bridge: an early 19th-century descendant of the simple suspension bridge. The deck is raised on posts above the main cables.
Suspended structures often allow much light to enter, because of the unobstructed interior. [5] A cable suspended structure: Yoyogi National Gymnasium in Tokyo. An example of a catenary-shaped suspended structure is the Eero Saarinen designed Dulles International Airport. The roof of the structure is made up of suspension cable which stretches ...
Cable-stayed bridges may appear to be similar to suspension bridges, but they are quite different in principle and construction. In suspension bridges, large main cables (normally two) hang between the towers and are anchored at each end to the ground. This can be difficult to implement when ground conditions are poor.
A chain hanging from points forms a catenary. The silk on a spider's web forming multiple elastic catenaries.. In physics and geometry, a catenary (US: / ˈ k æ t ən ɛr i / KAT-ən-err-ee, UK: / k ə ˈ t iː n ər i / kə-TEE-nər-ee) is the curve that an idealized hanging chain or cable assumes under its own weight when supported only at its ends in a uniform gravitational field.