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Essay On Cable Bridge

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Cable bridges go back many centuries; The system was used by the Egyptians for their sailboats. The first inhabitants of China used the cable system to build hanging bridges of hemp and iron ropes. There are many other examples of ancient cable-stayed bridge systems found all over the world.

The first modern structures of the bridge were a combination of a suspension system and stayed. They were built in the late eighteenth century in the United States and England. Dischinger identified the need to increase the tension in the cables to reduce the fall effect on stiffness. This advance gave the impetus to the modern structures based on cables. In 1955 he built the Stromsund Bridge, located in Sweden, which is considered the first modern cable …show more content…

• On the suspension bridge, a large cable hangs between two towers, and is fixed at each end to the anchors in the ground or to a massive structure.
• These cables form the main bearing structure of the bridge deck. Before installing the cover, the cables are subjected to voltage only by their own weight.
• The smaller cables or bars are suspended from the main cable and are used to support the load of the bridge deck, which rises in sections and attaches to the suspension cables.
• The tension in the cables must be transferred to the ground by the anchors, which are sometimes difficult to construct due to poor soil conditions.

1.3 ADVANTAGES OF CABLE STAYED BRIDGES:
• greater rigidity than the suspension bridge, so that deformations of the deck under live loads are reduced
• They can be constructed in cantilever from the tower - the cables act like temporary and permanent supports to the deck of the bridge
• For a symmetrical bridge (that is, the sections on both sides of the tower are the same), the balance of horizontal forces and large ground anchors are not

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