1. A Truss bridge is a type of bridge whose
main element is a truss, which is a structure of connected elements that form
triangular units.
A truss is formed by many different beams
that come together to form triangles to support the bridge’s way. Trusses are
used to support and stabilize the bridge. A truss is a very rigid structure,
and it transfers the load from a single point to a much wider area. It helps to
handle compression, tension, and weight of the different types of loads.
The reason why the shape (truss) is so
useful for building bridges is the fact that when it is placed under stress,
the tension or compression created makes the structure stronger. This process
makes it possible to support dynamic loads under variable conditions.
The key benefit of using a truss bridge to
span a distance is that they are relatively lightweight, but can still be
reinforced to provide strength. Because of the triangular design, each part of
the bridge helps to support other parts, making it an effective design.
2. Truss bridges are formed with a
structure of connected elements that form triangular structures to make up the
bridge. Trusses are the triangles that connect to the top and bottom cord and
two end posts.
The trusses make up reinforcement for the
bridge that even the load-bearing across the structure. Furthermore, the truss
dissipates the load through the structure so the middle of the beam experiences
less compression and tension. As you will see later, there are several
variations of the truss, but it starts with a top and bottom cord and a series
of trusses.
1. High Strength
Truss bridges are characterized by their interconnecting triangular structures, which give them the strength to withstand more heavy and dynamic loads. It gives the ability to carry heavy traffic loads, making it ideal for dense population areas and railroad crossings.
2. Ease of Construction
More popularity of truss bridge over other types is their versatility to be constructed in places where construction could be difficult, such as locations needing a long span of areas like deep trenches.Engineers prefer building truss bridges because these structures have the flexibility to be built in different locations with different depths and width. Moreover, they can be built with ease in between mountains and even over railways.
3. Uses Materials Effectively
While the truss bridge has many linked parts to make up its structure—its use of materials is extremely effective. Because of its design, it makes good use of limited construction materials to achieve strength that far outweighs its cost. Materials such as wood, iron, and steel are all utilized to their highest potential, hence reduces building cost.
4. Affordable Design Option
Compared to other bridge designs truss bridge designs often require fewer materials to complete the structure. Minimal amounts of materials needed to build a truss bridge and each piece is used very efficiently. This makes it possible to save on design and implementation costs, while also reducing the labor needs of the structure.
5. No Span Restrictions
One of the most appealing properties of a truss bridge is that it can be built over very long as well as very short distances. Many truss bridges tend to be small, spanning small distances within transportation networks. Engineers can install this type of bridge almost anywhere in the world today because of the efficiency of its design.
6. Road is Placed on the Top of the Span?
The truss bridge is one of the only types of bridges that allow for the road to be placed on top of it, rather than built into it. With a truss bridge, the transportation surface is placed on top of the support structures.
That makes it easier to integrate existing construction principles into the bridge while minimizing traffic delays. That’s why truss bridges can be built off-site, then installed once the pieces are delivered. This makes the truss bridge both versatile and economical to build.
