The spelling of "truss bridge" is as follows: /trʌs brɪdʒ/. The word "truss" is spelled with a "tr" at the beginning which comes from the Latin word "trahere" meaning "to pull". The double "s" is used to indicate the plural form of the noun. The word "bridge" is also phonetically spelled with a "b" at the beginning, derived from the Old English word "brycge". Together, these two words make up a structural engineering term for a type of bridge characterized by its use of trusses to support the roadbed.
A truss bridge is a type of bridge that consists of a framework structure composed of interconnected straight elements arranged in triangular patterns. It is designed to support loads and distribute weight evenly throughout its structure. The triangular arrangement of the elements creates a rigid and stable structure that can span long distances.
The main components of a truss bridge are the chords, which are the top and bottom horizontal members that span the length of the bridge. These chords provide support and help to resist bending and twisting forces. The vertical members, known as posts or verticals, connect the top and bottom chords and transfer the vertical loads downward. Diagonal members, called diagonals or braces, are placed between the chords and provide additional strength and stability by transferring the horizontal loads to the supports.
Truss bridges are commonly made of steel or wood, and their design can vary depending on the intended purpose and the span required. They are often used to cross rivers, canyons, or other locations where long spans are needed. Truss bridges are known for their efficiency, as the triangular design allows them to carry heavy loads while using a minimal amount of material. This makes them a popular choice for engineers when constructing bridges that need to support significant weight over long distances.
The word "truss" originated from the Old French word "trosse", meaning "band" or "bundle". It later evolved into the Middle English word "trusse", which referred to a collection of objects bound together. The term "truss" in the context of bridge construction specifically refers to the framework structure consisting of beams or other structural elements that form triangular units. These triangular units distribute the load of the bridge across the entire structure, providing stability and strength. Thus, the term "truss bridge" describes a bridge constructed using trusses as its primary structural support.