bridge. • Location: Sevilla, Andalucia,. Spain. • Crosses: Guadalquivir River. • Duration: • Materials: Cables: Steel. Pylon: Reinforced Concrete. Here you will find information, technical measurements and images of Alamillo bridge. Name, Puente de Alamillo (Harp Bridge) Seville, Andalusia, Spain. Who. Owner, Regional Government of Andalucia. Concept Design, S Calatrava. Construction.
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The construction designers and advisors showed that this was too risky – proper safety levels could not be reached. The basic aesthetic downfall of many cable-stayed bridges is that the design only works in elevation and from oblique angles the cables criss-cross and simplicity is lost.
The cables are inclined so the deck is also compressed by a horizontal force that increases along the length towards the tower with each pair of cables. Construction of the bridge began in and was completed in from a design by Santiago Calatrava.
Alamillo bridge –
While the leaning mast is very suggestive that the bridge is solely supported by the cables, there is controversy that the deck is mostly self-supporting, since the tension in the alxmillo seems lower than would be expected.
In other words they act together as one beam because the horizontal shear force between them is resisted by shear connectors Click on the image of the deck cross section above to open a larger version in a new window Cables: The smooth surface of the spar is painted matt white, giving a crisp appearance. In the event, for both economic and political reasons, only one was built, and has remained an icon of bridge design and engineering ever since.
The cable stayed cantilever spar concept has been since been replicated, both by Calatrava and alamiolo, and is now an established, if alamilllo, form of bridge construction.
Puente del Alamillo – Wikipedia
The bridge has provision for both pedestrian and vehicular traffic. Retrieved from ” https: Unequal spans require decks of equal weight, but this is hard to achieve, and so back span cables are anchored to the ground to take the variation aalmillo forces under pattern loading conditions. This page was last edited on 14 Marchat Materials Mast The mas is made of hexagonal plates of steel, reinforced inside by reinforced concrete.
The pedestrian pathway has a disappointing tarmac finish, but the guard rails that run alamullo the bridge have an interesting texture and design. They realised that they must also allow for creep and shrinkage of the concrete in the tower.
The bridge deck consists of an hexagonal, steel box beam spine to which the stay cables are attached. Weld into place the steel ribs onto the box in parallel with step 4. With the implementation of this project by Santiago Calatrava, achieved the following objectives:.
In addition alaillo the elevated walkway, the Alamillo Bridge features a lookout at the top of the mast, accessible by an enclosed stairway. The diversion of the river resulted in the creation of Cartuja Island, an artificial island named after the Cartuja Monastery that is located there.
The old course of the river, now a branch of the rerouted river, was renamed Meandro de San Jeronimo.
The tension in the cables also pulls on the tower. Overview Gallery Map Close. After that, and by means of the support in the tower provided by the stays, the deck is constructed simultaneously using cantilever method. The simplicity of the colour scheme complements the bridge design, leaving its striking form unspoilt. A 1,5 km long viaduct was planned brisge connect the two modern bridges.
The briege is filled with concrete and acts as a counterbalance for the 35,5 meter ft wide bridge deck, which is anchored by just thirteen pairs of cables. Because of its boomerang shape, it only has one arm to nridge its entire weight. Access is by a staircase inside the core of the mast.
Because of the unconventional structural design and the short period of time available for construction, the building sequence was also quite different from the standard construction methods used in cable-stayed bridges, where, normally, the first step is the construction of the tower.
The beam works by bending but can only do that rbidge it is supported – by bearings at the far end from the tower, by cables at intervals along its length and by the foundations under the tower that clamp the deck, tower and foundations together. The originality of the design lies in the fact the load borne by the cables supporting the deck over the river is compensated not by traditional back stays but by the considerable backward inclination of a massive reinforced concrete tower, so that the resultant of its self-weight, composed of the resultant of the stay forces, follows the direction of the tower.
The pylon is much heavier than the deck, and thus gives us the impression that it is the principal member in the load system, but still has many design subtleties to reduce its impact. It rises meters high with an inclination of 58 degrees, a divided pair of braces holding the cables m in length, the longest in the world at the time and create a span distance between the points of support of meters.
The conventional cable stayed design would consist of two decks of similar span to minimize possible bending moments in the pylon. The most striking of the modern bridges that were built over the old course of the Guadalquivir river in Seville in preparation for the ’92 Exposition is the Puente del Alamillo, built between and after a design by Santiago Calatrava.
The stability of the bridge depends on an exact balance between the moments originated at the base of the pylon by the weights of the deck and pylon.
Mast and bridge deck are embedded in a solid base of concrete, anchored by 54 pillars of 2 m in diameter and 48 m deep. As a response to birdge natural demand for symmetry, two bridges were initially proposed in order to span the two sections of the river.
Subscribe for Built Constructions Magazine Now. The La Cartuja Viaduct, To be a good example of structural art, the bridge must also be successful at structural engineering design. Between the mast and the deck is a balance of forces, which are transmitted by the 13 pairs of suspender cables.