Arches are among the oldest forms of structural support. Unlike beam bridges, arch bridges are curved. The arch carries the weight outward along the curve to the supports on each end of the bridge, called abutments. The abutments carry the load and stop the bottom of the bridge from spreading out.
the abutments at either end of the bridge anchor the arch so that it will not collapse, the weight of the arch is supported by the abutment on either end
arch bridges can support more weight than beam bridges but for price i say beam won.
An arch bridge is a bridge with abutments at each end shaped as a curved arch. 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. A viaduct (a long bridge) may be made from a series of arches, although other more economical structures are typically used today.
Iqbal Husain has written: 'Performance of integral abutment bridges' -- subject(s): Abutments, Bridges, Bridges, Concrete, Concrete Bridges 'Semi-integral abutment bridges' -- subject(s): Abutments, Bridges, Bridges, Concrete, Concrete Bridges
arch bridges
arch bridges
Bridges are made up of triangles joined together to form a truss. Triangles are very strong because they carry weight in tension and compression instead of bending and can hold a lot more than a beam that bends can
The curve that is used in bridges and over doorways is an arch. An arch is the curved part that is over an opening and it helps support the weight above the opening.
An arch bridge. I think that may have been discovered quite some time ago !!! +++ It was - the Romans used arches extensively, in buildings as a well as for bridges. However, the arch is indeed stronger than the plank, or simple beam, bridge because it transmits the loads to its abutments. You can stiffen a beam bridge by fitting it with vertical side-members, or in larger structures, frames (trusses).
Bridges typically have three characteristics and are built into three different types. These include truss bridges, beam bridges, and suspension bridges.
arch bridges are the oldest type of bridges