Bridge_Project



Hello! My name is Jessire Suárez and I’m going to talk about the interesting world of Bridges "The connectors of worlds". I hope that you enjoy! It's a structure built to allow a channel of communication to cross a river (river, ravine, etc.) or to go through another channel of communication, without any problems of traffic mixture of both. In its construction should be guarded many important aspects such as stability, resistance to movement and breakage, and so on. **Types of bridges** For the election of any material and construction method takes into account certain factors, such as thickness and light loads use and resistance of the soil where the foundation held. Bridges are built to withstand the usual burdens and have importance to the ecological or environmental actions, among which are: the effect of temperature and wind action.
 * What is a bridge?**

There are six main types of bridges:

1. Beam Bridges: Work on the upper compression and traction on the bottom. 2. In bow: The compressive structure works. 3. Pendants: The structure works in tension. 4. In bracket: Work in tension at the top and compressive at the bottom. 5. Cable-stayed: They have the particularity of not being restrained at the ends, but near the center of their beams. 6. Underpinned: The forces may be distributed in a large number of members.


 * For their use**

It is also common to classify a bridge to their use. A bridge is designed to train, car or pedestrian traffic, gas or water pipes for transportation or shipping. In some cases there may be restrictions on its use. For example, can be a bridge on a highway and prohibited for pedestrians and bicycles, or a pedestrian bridge, possibly also for bicycles. An aqueduct is a bridge that carries water, resembling a viaduct, a bridge connecting points of similar height.



Now I will talk about a bridge that caught my attention because of its asymmetrical design. It is a road bridge located at the northern tip of the island of La Cartuja, Spain known as **El Puente del Alamillo**. Alamillo Bridge is a suspension bridge pylon counterbalancing was designed by Spanish architect Santiago Calatrava and built in Seville, Spain between 1989 and 1992, to allow access to the island of La Cartuja, the site of Expo 92 and now occupies part of their land Isla Mágica theme park in addition to the centennial of the Cartuja Monastery. This project is known as an "incomplete project”. Since the initial idea was to create another bridge identical but inclined in the opposite direction on the other channel of the river Guadalquivir. In this initial project, only one was raised, due to the budget, it was not enough to cover the pair. The materials used for this project were: steel cables, concrete for the pylon and the deck. The bridge is based on the concepts of pylons counterweighting firm. It stands 142 meters high with an inclination of 58 degrees, a divided pair of braces holding the cables (300 m in length, the longest in the world at that time) and create a span (distance between support points) 200 meters. Today, the bridge is still used as a connector to the island of La Cartuja. However, it also became a symbol of tourism in which the height of the bridge served as a lookout, and is known as the "eye of the horse's head”, placing it as one of the best bridges in the world, both for its design as by its construction.

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