ALAMILLO BRIDGE PDF

It is a cable-styled bridge that crosses the San Jeronimo meander of the Guadalquivir River and is bounded by the ring road of Sevilla in the west. Alamillo Bridge The bridge deck consists of an hexagonal, steel box beam spine to which the stay cables are attached. An irregular roughly heaxagonal cross section with average dimensions 12 m. Weld into place the steel ribs onto the box in parallel with step 4. The proof is that the cables that support the bridge are not tight at the top of the mast, contrary to what one would expect. This is achieved by the steep angle of the cantilever beams that cast the under deck into shadow.

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The initial idea involved creating a twin brother, an identical bridge tilted in the opposite direction on the other channel of the Guadalquivir River. In this initial project, only one was erected, because the budget was not sufficient to cover the pair. As in almost all the work of Calatrava, there is some controversy over the work, in particular concerning its structure. The proof is that the cables that support the bridge are not tight at the top of the mast, contrary to what one would expect.

Concept Arpa figure has only one arm and support its weight. The top of the mast is actually a lookout. Access is by a staircase inside the core of the mast. Space has been reserved for the machinery of a future external panoramic lift, and elevators and stairs have been constructed to connect the two.

There is a pedestrian zone, in this case, a central area separated from the movement of vehicles. Its integration into the urban landscape enriches the place, being made of very slight forms that avoid the idea of a bridge as a static structure, especially for its impression of movement and its advanced design: a combination of technology, engineering, art and sculpture.

Because of its boomerang shape, it only has one arm to support its entire weight. Structure It is built on the concepts of tight pylons and counterweighting. 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.

One of the largest cranes in the world at the time was required to build the bridge, able to lift metric tons to meters high. Between the mast and the deck is a balance of forces, which are transmitted by the 13 pairs of suspender cables. It is considered the first bridge supported by cables, in which the platform is balanced by the weight of the leaning tower. It has a total length of meters. Materials The mas is made of hexagonal plates of steel, reinforced inside by reinforced concrete.

Bridge Deck The bridge deck is designed as a metal structure and consists of a central platform and hexagonal anchorages where the cables attach. In this platform, metal ribs leave some 4 meters on both sides, which rests on a slab of concrete that functions as the road; there are two roads of three lanes each.

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. These pillars is compensate for movements experienced by the mast and bridge deck. The device is made through the corresponding transitions between the concrete and metal. Cables The cables are made up of 60 cords of 6 inches in diameter each, except the last couple of m in length, consisting of only 45 cords.

The cords are protected by epoxy resin, and the cable is surrounded by a sheath of high density polyethylene injected into the anchorages. Types of Anchorage The anchors are located in the bottom platform on both sides of the central deck. The anchor is a passive element in the face of the tilted mast, which compensates for its own weight in be bending stresses, no cables are required.

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