Understanding Girderless Structures: Types and Applications

Girderless refers to a bridge or other structure that does not have girders, which are horizontal beams that support the deck or roadway. Instead of girders, girderless structures use other types of supports, such as piers or columns, to carry the load of the deck or roadway.

Girderless bridges are typically used in situations where the span is relatively short and the loads are not too heavy. They can be more economical to build than girdered bridges, but they may not be suitable for longer spans or heavier loads.

Some common examples of girderless structures include:

1. Arch bridges: These are bridges that use an arch shape to support the deck or roadway. The arch acts as a continuous beam, carrying the load of the deck and distributing it evenly across the supports.
2. Cable-stayed bridges: These are bridges that use cables to support the deck or roadway. The cables are attached to the deck at one end and to the supports at the other end, creating a system of tension that holds the deck in place.
3. Suspension bridges: These are bridges that use suspender cables to support the deck or roadway. The suspender cables are attached to the deck at one end and to the supports at the other end, creating a system of tension that holds the deck in place.
4. Beam bridges: These are bridges that use beams to support the deck or roadway. The beams are typically made of concrete or steel and are supported by piers or columns at each end.

Overall, girderless structures can be an effective and efficient way to span distances and support loads, but they may not be suitable for all situations. It's important to carefully consider the specific needs of a project before deciding on the appropriate type of structure.