Arch Bridge And The Bridge

1328 Words Dec 6th, 2016 6 Pages
Arch bridge is one of the most popular types of bridges, it came into use over 3000 years ago and remained in height of popularity until industrial revolution and invention of advanced materials that make architect to create other modern bridge designs. However, even today arch bridges remain in use, the arches can be built on much larger scales with the help of modern materials. Its curved design is the basic principle of arch bridge, it does not push load forces straight down, but instead they are transported along the curve of the arch to the supports on each end. These supports (called abutments) carry the load of all of the bridge and are responsible for holding the arch in the accurate position stable position. Transporting of forces across the arch is done through central keystone on the top of the arch. Its weight pushes the surrounding rocks down and outward, making entire structure very rigid and strong.

Function
An arch bridge is a curved bridge with abutments at each end. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. For a specific construction method, especially for masonry arches, the proportions of the arch remain similar no matter what the size: wider arches are thus required to be taller arches. For a semi-circular arch, the height is half of the span. Bridges across deep, narrow gorges can have their arch placed entirely beneath a flat roadway, but…

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