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If the slab has a stiffness that is different in two directions (at right angles), then the deck is known and analyzed as an orthotropic deck. A beam and slab deck is one where the beams may deflect somewhat independently, and any transverse forces are carried in the deck. A cellular deck is one where a number of thin slabs and webs will ...
From 1982 to 1986, the original bridge deck, in 747 sections, was replaced with lighter, stronger orthotropic steel deck panels over 401 nights without closing the roadway completely to traffic. [5] The project not only restored the bridge to prime condition but also reduced the deck weight by 12,300 tons (11,160 metric tons ).
Beam bridges are the simplest structural forms for bridge spans supported by an abutment or pier at each end. [1] No moments are transferred throughout the support, hence their structural type is known as simply supported. The simplest beam bridge could be a log (see log bridge), a wood plank, or a stone slab (see clapper bridge) laid
In the deck-type bridge, a wood, steel or reinforced concrete bridge deck is supported on top of two or more plate girders, and may act compositely with them. In the case of railroad bridges, the railroad ties themselves may form the bridge deck, or the deck may support ballast on which the track is laid.
The Ponte das Taipas is a deck slab bridge across the Ave River in Caldas das Taipas, Portugal. Contrary to some sources which classify the structure as a Roman bridge , [ 1 ] it was built in the modern age.
The deck is the roadway or walkway surface. In roadway applications it is usually a poured reinforced concrete slab, but can also be a steel grid or wood plank. The deck includes any road lanes, medians, sidewalks, parapets or railings, and miscellaneous items like drainage and lighting.
The bridge structure comprises 18 structural steel bridge decks, 20 structural steel masts and 16 horizontal spars [citation needed] or in layman's terms horizontal masts. 72 precast concrete deck slabs sit on the main bridge deck and are secured to the steel structure and together by in-situ concrete stitch pours [citation needed].
The bridge is 714 feet (218 m) in total length and 24 feet (7.3 m) wide, with 260 feet (79 m) of clearance below, and has a main span of 360 feet (110 m), which places 50% of the total roadbed above the arch. [1] The arch ribs are five feet thick at the deck and nine feet thick at the springing line, where
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