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What Is Girder Bridge? Girder bridge is a type of bridge in which girders are used to support the slab of the bridge. Girders are large span beams usually made of structural steel or reinforced cement concrete (RCC). Girder bridge is also known as beam bridge.
A girder bridge is a bridge that uses girders as the means of supporting its deck. [1] . The two most common types of modern steel girder bridges are plate and box. [citation needed] The term "girder" is often used interchangeably with "beam" in reference to bridge design.
Girders are horizontal beams that span between two abutments or piers, carrying the weight of the bridge deck, which is the roadway or pedestrian path that sits on top of the girders. Steel girder bridges are known for their strength and durability, which makes them an ideal choice for heavily trafficked roads and areas with high seismic activity.
Jun 1, 2023 · The bridge in which girders are used for supporting its deck is called the girder bridge. Such girders can be either rolled steel girders or box girders. This bridge functions by transferring the load coming from the deck to the piers and the abutments through the girders.
Box girders are used for the construction of a cable-supported bridge, curved bridge, and footbridges. It is rarely used in buildings, but they may be used in special circumstances, such as when loads are carried eccentrically to the beam axis.
1.2 Where bridges of the through or semi-through type are adopted, they must be designed to allow for clearances specified in the appropriate schedule of dimensions, for different gauges in the case of Railway bridges or bridges over Railway, and in the case of road bridges clearances as specified by the appropriate authorities.
girder bridges have become widespread and are commonly used at locations that require complex geometries and have limited right-of-way, such as urban interchanges. Some of the important issues that differentiate curved steel girders from their straight counterparts include the effects of torsion,
The detailed design process to maximise girder efficiency satisfying strength, stability, stiffness, fatigue or dynamic criteria, as relevant, can be then carried out. Recent developments in optimum design methods allow direct design of girder bridges, considering minimisation of weight/cost.
2.2 Plate Girder Bridges Due in large part to their simplicity and efficiency, plate girder bridges are the most common type of steel bridge. Over time, different types of plate girder bridges have been used, but in modern times, composite, multi-girder bridges have been, by far, the most common type of plate girder bridge configuration.
There is no doubt that the girder bridge remains the most popular form of bridge worldwide. Given this popularity, innovations will continue despite the mundane appearance of a girder form ( Figures 15.11 and 15.12 ).
