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Truss Arch Bridge
A truss arch bridge combines the elements of the truss bridge and the arch bridge. The actual resolution of forces will depend upon the design. If no horizontal thrusting forces are generated this becomes an arch-shaped truss, essentially a bent beam – see moon bridge for an example. If horizontal thrust is generated but the apex of the arch is a pin joint, this is termed 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 closely fitted beams pinned together, so the members within the frames are not free to move relative to one another, as they are in a pin-jointed truss structure that allows rotation at the pin joint. Such rigid structures (which impose bending stresses upon the elements) were further developed in the 20th century as the Vierendeel truss. Image:Garabit.jpg, Gara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New River Gorge Bridge
The New River Gorge Bridge is a steel arch bridge long over the New River Gorge near Fayetteville, West Virginia, in the Appalachian Mountains of the eastern United States. With an arch long, the New River Gorge Bridge was the world's longest single-span arch bridge for 26 years; it is now the fifth longest; the longest outside of China. Part of U.S. Route 19, its construction marked the completion of Corridor L of the Appalachian Development Highway System. An average of 16,200 motor vehicles cross the bridge each day. The roadway of the New River Gorge Bridge is above the New River, making the bridge one of the highest vehicular bridges in the world; it is the third highest in the United States. When completed in 1977, it was the world's highest bridge carrying a regular roadway, a title it held until the 2001 opening of the Liuguanghe Bridge in China. Because of its height, the bridge has attracted daredevils since its construction. It is now the centerpiece of the ann ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Truss
A truss is an assembly of ''members'' such as beams, connected by ''nodes'', that creates a rigid structure. In engineering, a truss is a structure that "consists of two-force members only, where the members are organized so that the assemblage as a whole behaves as a single object". A "two-force member" is a structural component where force is applied to only two points. Although this rigorous definition allows the members to have any shape connected in any stable configuration, trusses typically comprise five or more triangular units constructed with straight members whose ends are connected at joints referred to as '' nodes''. In this typical context, external forces and reactions to those forces are considered to act only at the nodes and result in forces in the members that are either tensile or compressive. For straight members, moments ( torques) are explicitly excluded because, and only because, all the joints in a truss are treated as revolutes, as is necessary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deck Arch Bridges
Deck may refer to: A level or platform Buildings and structures * Deck (bridge), the roadway surface of a bridge * Deck (building), an outdoor floor attached to a building made of wood or wood-like material *Another name for a storey *The concrete or tile area surrounding a swimming pool *Deck arch bridge, a type of bridge *Observation deck, a platform situated upon a tall architectural structure or natural feature * Orthotropic deck * Roof deck, the framing and sheathing to which roofing material is applied Transportation *Bus deck, referring to the number of passenger levels on a bus *Cockpit A cockpit or flight deck is the area, usually near the front of an aircraft or spacecraft, from which a pilot controls the aircraft. The cockpit of an aircraft contains flight instruments on an instrument panel, and the controls that e ..., also called a "flight deck" Maritime *Deck (ship), a floor of a ship *Flight deck of an aircraft carrier Audiovisual equipment *Cassette ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Navajo Bridge
Navajo Bridge is the name of twin steel spandrel arch bridges that cross the Colorado River in the Grand Canyon National Park (near Lees Ferry) in northern Coconino County, Arizona, United States. The newer of the two spans carries vehicular traffic on U.S. Route 89A (US 89A) over Marble Canyon between Bitter Springs and Jacob Lake, allowing travel into a remote Arizona Strip region north of the Colorado River including the North Rim of Grand Canyon National Park. Prior to completion of the first Navajo Bridge, one of the only Colorado River crossings between Arizona and Utah was located about upstream from the bridge site, at the mouth of Glen Canyon where Lees Ferry service had operated since 1873. The ferry site had been chosen as the only relatively easy access to the river for both northbound and southbound travelers. By the 1920s, automobile traffic began using the ferry, though it was not considered a safe and reliable crossing due to adverse weather and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
I-35W Mississippi River Bridge
The I-35W Mississippi River bridge (officially known as Bridge 9340) was an eight-lane, steel truss arch bridge that carried Interstate 35W across the Mississippi River one-half mile (875 m) downstream from the Saint Anthony Falls in Minneapolis, Minnesota, United States. The bridge opened in 1967 and was Minnesota's third busiest, carrying 140,000 vehicles daily. It experienced a catastrophic failure during the evening rush hour on August 1, 2007, killing 13 people and injuring 145. The NTSB cited a design flaw as the likely cause of the collapse, noting that an excessively thin gusset plate ripped along a line of rivets, and that additional weight on the bridge at the time contributed to the catastrophic failure. Help came immediately from mutual aid in the seven-county Minneapolis–Saint Paul metropolitan area and emergency response personnel, charities, and volunteers. Within a few days of the collapse, the Minnesota Department of Transportation (Mn/DOT) planned its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hurricane Deck Bridge
The Hurricane Deck Bridge was a truss arch bridge located on Lake of the Ozarks in Camden County, Missouri. It carried Missouri Route 5 across the Osage Arm of the lake. It was perhaps one of the most distinctive features on the lake. It was the only truss-type bridge remaining on the lake. The American Institute of Steel Construction selected the bridge as the most beautiful steel span built in 1936. It was about half a mile long. The bridge was replaced in 2013. History Construction for the bridge began in 1934 and was completed in 1936. The bridge was one of three bridges on the lake constructed with the truss support below the deck enabling passengers to see the lake clearly. The bridge construction was similar to that of the original Niangua Bridge. Before the bridge was built, cars were moved across the lake by ferry. At one time the bridge was originally a toll bridge. The prices to pass were 40 cents for car and driver, 5 cents for each additional passenger; cars towing t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gustave Eiffel
Alexandre Gustave Eiffel (born Bonickhausen dit Eiffel; ; ; 15 December 1832 – 27 December 1923) was a French civil engineer. A graduate of École Centrale des Arts et Manufactures, he made his name with various bridges for the French railway network, most famously the Garabit Viaduct. He is best known for the world-famous Eiffel Tower, designed by his company and built for the 1889 Universal Exposition in Paris, and his contribution to building the Statue of Liberty in New York. After his retirement from engineering, Eiffel focused on research into meteorology and aerodynamics, making significant contributions in both fields. Early life Alexandre Gustave Eiffel was born in France, in the Côte-d'Or, the first child of Catherine-Mélanie (née Moneuse) and Alexandre Bonickhausen dit Eiffel. He was a descendant of Marguerite Frédérique (née Lideriz) and Jean-René Bönickhausen and who had emigrated from the German town of Marmagen and settled in Paris at the beginning of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maria Pia Bridge
The Maria Pia Bridge (in Portuguese ''Ponte de D. Maria Pia'', commonly known as ''Ponte de Dona Maria Pia'') is a railway bridge built in 1877, and attributed to Gustave Eiffel, situated over the Portuguese northern municipalities of Porto and Vila Nova de Gaia. Part of the Linha Norte system of the national railway, the wrought iron, double-hinged, crescent arch spans , over the Douro River. At the time of its construction, it was the longest single-arch span in the world; today, it is no longer used for rail transport and was replaced by a modern structure in 1991. It is often confused with the D. Luís Bridge, which was built nine years later and is located to the west, but resembles the structure, albeit with two decks. History In 1875, the Royal Portuguese Railway Company announced a competition for a bridge to carry the Lisbon to Porto railway across the river Douro. This was very technically demanding: the river was fast-flowing, its depth could be as much as duri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Niagara River
The Niagara River () is a river that flows north from Lake Erie to Lake Ontario. It forms part of the border between the province of Ontario in Canada (on the west) and the state of New York in the United States (on the east). There are differing theories as to the origin of the river's name. According to Iroquoian scholar Bruce Trigger, ''Niagara'' is derived from the name given to a branch of the locally residing native Neutral Confederacy, who are described as being called the ''Niagagarega'' people on several late-17th-century French maps of the area. According to George R. Stewart, it comes from the name of an Iroquois town called ''Ongniaahra'', meaning "point of land cut in two". The river, which is occasionally described as a strait, is about long and includes Niagara Falls in its course. The falls have moved approximately upstream from the Niagara Escarpment in the last 12,000 years, resulting in a gorge below the falls. Today, the diversion of the river for ele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honeymoon Bridge (Niagara Falls)
The Upper Steel Arch Bridge, also known as the Honeymoon Bridge or Fallsview Bridge (less frequently Falls View Bridge), was an international bridge which crossed the Niagara River, connecting Niagara Falls, Ontario, Canada, with Niagara Falls, New York, United States. It was located about upriver of the present-day Rainbow Bridge. It collapsed in 1938. History Built in 1897–98 by the Pencoyd Bridge Company, the Upper Steel Arch Bridge was located closer to the American Falls than the bridge that it replaced. When completed, the bridge became the largest steel arch bridge in the world. Its features included a double track for trolley cars and room for carriages and pedestrians. The bridge had to be constantly protected from ice bridges that formed over the river every winter. In January 1899 a huge ice bridge threatened the bridge when ice piled around its abutments due to their close proximity to the river's surface. The bridge was subsequently fortified with a tall stone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian Pacific Railway
The Canadian Pacific Railway (french: Chemin de fer Canadien Pacifique) , also known simply as CPR or Canadian Pacific and formerly as CP Rail (1968–1996), is a Canadian Class I railway incorporated in 1881. The railway is owned by Canadian Pacific Railway Limited, which began operations as legal owner in a corporate restructuring in 2001. Headquartered in Calgary, Alberta, the railway owns approximately of track in seven provinces of Canada and into the United States, stretching from Montreal to Vancouver, and as far north as Edmonton. Its rail network also serves Minneapolis–St. Paul, Milwaukee, Detroit, Chicago, and Albany, New York, in the United States. The railway was first built between eastern Canada and British Columbia between 1881 and 1885 (connecting with Ottawa Valley and Georgian Bay area lines built earlier), fulfilling a commitment extended to British Columbia when it entered Confederation in 1871; the CPR was Canada's first transcontinental railway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stoney Creek Bridge
Stoney Creek Bridge is a Canadian Pacific Railway (CP) truss arch in southeastern British Columbia. This single-track crossing over Stoney Creek is in Glacier National Park, between Revelstoke and Golden. 1885 wooden bridge Stoney Creek was the highest timber bridge ever built, and at the time was the second highest bridge in North America with reference to deck height, rather than structural height. Deck height is the maximum vertical drop from the bridge deck to the ground or water surface below. However, various sources yield a range of height measurements for this wooden structure. The heights of the three towers were , , and . Recalculating the measurement using the planning and photographic evidence indicates an deck height. Howe trusses, measuring and , spanned the three piers. The confined workspace of the narrow gulch and the unstable rock foundation slowed construction. A flash flood, which buried the foundations of the high tower, cost two days of work. Afte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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