A bridge is a structure built to span a physical obstacle, such as a body of water, valley, or road, without closing the way underneath. It is constructed for the purpose of providing passage over the obstacle, usually something that can be detrimental to cross otherwise. There are many different designs that each serve a particular purpose and apply to different situations. Designs of bridges vary depending on the function of the bridge, the nature of the terrain where the bridge is constructed and anchored, the material used to make it, and the funds available to build it.
Concrete bridges come in all shapes and sizes. Designs can meet whatever functional, aesthetic and economic criteria are appropriate to the site location and needs of the client.
Arch bridges
Arches are perhaps the oldest form of bridge construction. They can be adopted over a large range of spans.
Slab bridge decks
Slab bridge decks are useful for short spans. Designed with either solid or voided slabs, they are usually constructed with insitu concrete using traditional formwork and falsework systems.
Beam bridges
Beam bridges can be quick to erect over existing roads, railways or rivers. Standard precast beam types can cater for spans of up to 50m.
Box girder bridges
Box girders are used for spans from 40m up to 300m using either in-situ or precast concrete segmental construction. Box girders produce elegant and robust solutions.
Extrados bridges
Extrados bridges are a hybrid between a conventional box girder deck and a cable stayed bridge. A stiff deck is supported by cables at a shallow inclination from short pylons.
Cable stayed bridges
Cable stayed bridges are appropriate for longer spans. They can be designed for a huge range of span and cable configurations.
Stressed ribbon bridges
The stressed ribbon is a form of suspension bridge that encases suspension cables within the concrete deck. They are only suitable for use as pedestrian bridges.
Inclined frame bridges
Inclined frame bridges are constructed with the supporting piers integral with the deck and at an inclination to the vertical. They are ideally suited across valleys or steep sided cuttings.
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Download Excel Sheet to Calculate the following Parameters
Download Excel Sheet to Calculate the following Parameters
1. Design of Bridge Slab
2. Calculation of Bridge Slab
3. Shear "VL" (Own Weight) Diagram
4. Steel Distribution of Bridge Slab
5. EDGE BEAM CALCULATION
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