Truss Bridge Research Paper

714 Words 3 Pages
For the purpose of this project we will be discussing mainly the truss bridge.
A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements forming triangular units. The connected elements (typically straight) may be stressed from tension, compression, or sometimes both in response to dynamic loads. (john, 2013)

A truss is assumed to comprise of members that are connected by means of pin joints, and which is supported at both ends by means of hinged joints or rollers, it’s described as being statically determinate. Newton's Laws apply to the structure as a whole, as well as to each node or joint. In order for any node that may be subject to an external load or force to remain static
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The steel truss bridge members are in compression or tension. The trusses possess a high ratio of strength to weight, and therefore are useful for being employed in truss bridges. Trusses are also suitable for use in several other structures like roof supports and space stations. Amongst the modern bridges, truss bridges are considered to be included in the older kinds. The famous truss bridges are relatively inexpensive due to effective utilization of the bridge materials. The truss bridge designs are an important factor in …show more content…
The truss bridge is designed with either the road being at the truss bottom, or alternatively with the road being at the truss top. The former design has the bridge elements under compression, while the elements of the later design are mostly under tension. The bridge materials are selected and either welded or bolted, according to the requirement. The concrete is poured in the abutments, with the anchor bolts firmly inserted. Finally, the trusses are built, and the bridge is ready for use.
Truss Bridge Designs
A truss bridge is designed using Newton's laws of motion and incorporating pin joints. Pin joints are places at which straight elements of the truss formation meet. It is assumed that only the tensile and compressive forces operate on the truss elements. The truss bridge comprises vertical, horizontal, and the diagonal elements. The vertical members are under tension, while the horizontal elements are subjected to bending, shear, and tensile loads. The diagonal elements are under compressive forces.

Kinds of Truss

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