Cantilever spar cable-stayed bridge
Encyclopedia
A cantilever spar cable-stayed bridge is a modern variation of the cable-stayed bridge
. This design has been pioneered by the architect
Santiago Calatrava
. An example of this type is the Puente del Alamillo
. In two of his designs the force distribution does not depend solely upon the cantilever
action of the spar
; the angle of the spar away from the bridge and the weight distribution in the spar serve to reduce the overturning forces applied to the footing of the spar. In contrast, in his swinging Puente de la Mujer
design the spar reaches toward the cable supported deck and is counterbalanced by a structural tail.
- Opened in 2003, the Puente Atirantado (sometimes called Puente de la Unidad or Viaducto de la Unidad) is a cable-stayed bridge that crosses the Río Santa Catarina and joins San Pedro Garza García with Monterrey
. Although impressive and elegant, its construction was highly controversial due to its cost, its design (very similar to the one by Santiago Calatrava
), and the fact that the river it crosses is dry.
- Mariánský most - in the Czech Republic
. (1998)
Cable-stayed bridge
A cable-stayed bridge is a bridge that consists of one or more columns , with cables supporting the bridge deck....
. This design has been pioneered by the architect
Architect
An architect is a person trained in the planning, design and oversight of the construction of buildings. To practice architecture means to offer or render services in connection with the design and construction of a building, or group of buildings and the space within the site surrounding the...
Santiago Calatrava
Santiago Calatrava
Santiago Calatrava Valls is a Spanish architect, sculptor and structural engineer whose principal office is in Zürich, Switzerland. Classed now among the elite designers of the world, he has offices in Zürich, Paris, Valencia, and New York City....
. An example of this type is the Puente del Alamillo
Puente del Alamillo
The Alamillo Bridge is a structure in Seville, Andalucia , which spans the Canal de Alfonso XIII, allowing access to La Cartuja, an island between the canal and the Guadalquivir River. The bridge was constructed as part of infrastructure improvements for Expo 92, which was held on a large site on...
. In two of his designs the force distribution does not depend solely upon the cantilever
Cantilever
A cantilever is a beam anchored at only one end. The beam carries the load to the support where it is resisted by moment and shear stress. Cantilever construction allows for overhanging structures without external bracing. Cantilevers can also be constructed with trusses or slabs.This is in...
action of the spar
Spar
In sailing, a spar is a pole of wood, metal or lightweight materials such as carbon fiber used on a sailing vessel. Spars of all types In sailing, a spar is a pole of wood, metal or lightweight materials such as carbon fiber used on a sailing vessel. Spars of all types In sailing, a spar is a...
; the angle of the spar away from the bridge and the weight distribution in the spar serve to reduce the overturning forces applied to the footing of the spar. In contrast, in his swinging Puente de la Mujer
Puente de la Mujer
The Puente de la Mujer is a footbridge in the Puerto Madero district of Buenos Aires, Argentina that spans dock 3 . It is of the Cantilever spar cable-stayed bridge type and is also a swing bridge, but somewhat unique in its asymmetrical arrangement...
design the spar reaches toward the cable supported deck and is counterbalanced by a structural tail.
Of this type by Santiago Calatrava
- Puente del AlamilloPuente del AlamilloThe Alamillo Bridge is a structure in Seville, Andalucia , which spans the Canal de Alfonso XIII, allowing access to La Cartuja, an island between the canal and the Guadalquivir River. The bridge was constructed as part of infrastructure improvements for Expo 92, which was held on a large site on...
Seville, Spain, 1992 (backward cantilever) - Puente de la MujerPuente de la MujerThe Puente de la Mujer is a footbridge in the Puerto Madero district of Buenos Aires, Argentina that spans dock 3 . It is of the Cantilever spar cable-stayed bridge type and is also a swing bridge, but somewhat unique in its asymmetrical arrangement...
Buenos Aries, Argentina, 2002 (forward cantilever with gate-swing opening) - Sundial Bridge at Turtle BaySundial Bridge at Turtle BayThe Sundial Bridge is a cantilever spar cable-stayed bridge for bicycles and pedestrians that spans the Sacramento River in Redding, California, United States and forms a large sundial. It was designed by Santiago Calatrava and completed in 2004 at a cost of US$23,500,000...
Redding CA, USA, 2004 (backward cantilever with glass decking) - Chords BridgeChords BridgeThe Jerusalem Chords Bridge or Jerusalem Bridge of Strings , also called the Jerusalem Light Rail Bridge is a cantilever spar cable-stayed bridge at the entrance to the city of Jerusalem, Israel designed by the Spanish architect and engineer Santiago Calatrava. The bridge is used by Jerusalem Light...
Jerusalem, Israel, opened 2008, light railJerusalem Light RailThe Jerusalem Light Rail is a light rail line, the first of several rapid transit lines planned by Israel for Jerusalem, Israel's capital city. Construction began in 2002 and ended in 2010, when the testing phase began. It was built by the CityPass consortium, which has a 30-year concession to...
operative since 2011 (single-sided angled cantilever) - Samuel Beckett BridgeSamuel Beckett BridgeSamuel Beckett Bridge is a cable-stayed bridge in Dublin that joins Sir John Rogerson's Quay on the south side of the River Liffey to Guild Street and North Wall Quay in the Docklands area.-Design and construction:...
Dublin, Ireland, opened 10 December 2009 (single-sided forward curved bow, evoking a harp)
Others of this type
Monterrey
Monterrey , is the capital city of the northeastern state of Nuevo León in the country of Mexico. The city is anchor to the third-largest metropolitan area in Mexico and is ranked as the ninth-largest city in the nation. Monterrey serves as a commercial center in the north of the country and is the...
. Although impressive and elegant, its construction was highly controversial due to its cost, its design (very similar to the one by Santiago Calatrava
Santiago Calatrava
Santiago Calatrava Valls is a Spanish architect, sculptor and structural engineer whose principal office is in Zürich, Switzerland. Classed now among the elite designers of the world, he has offices in Zürich, Paris, Valencia, and New York City....
), and the fact that the river it crosses is dry.
- Mariánský most - in the Czech Republic
Czech Republic
The Czech Republic is a landlocked country in Central Europe. The country is bordered by Poland to the northeast, Slovakia to the east, Austria to the south, and Germany to the west and northwest....
. (1998)
See also
- BridgeBridgeA bridge is a structure built to span physical obstacles such as a body of water, valley, or road, for the purpose of providing passage over the obstacle...
- A directory of bridge types - Cable-stayed bridgeCable-stayed bridgeA cable-stayed bridge is a bridge that consists of one or more columns , with cables supporting the bridge deck....
- The ancestor of this type - Side-spar cable-stayed bridgeSide-spar cable-stayed bridgeA side-spar cable-stayed bridge may be an otherwise conventional cable-stayed bridge but its cable support does not span the roadway, rather being cantilevered from one side. The bridge illustrated is located in Winnipeg, Manitoba, Canada...
- A related type