Table of Contents
A cantilever bridge is a bridge whose main structures are cantilevers, which are used to build girder bridges and truss bridges. A cantilever bridge has advantages in both simply supported and continuous bridges, like they are suitable for foundation with uneven settlement; they can be built
without false-works but has larger span capacity.
For cantilever bridges with balanced construction, hinges are usually provided at contra-flexure points of a continuous span, and an intermediate simply supported span can be suspended between two hinges. Cantilever bridges were not only built as girder bridges but also widely used in truss bridges.
Cantilever bridges are widely seen in major cities and movies. Though you have seen them but might not know the name it is called.
A cantilever is a structure with one of its ends fixed and free at other ends. The other end projects horizontally into space, and it is this end that helps support the bridge.
A cantilever bridge works in such a way that the bottom part of each cantilever is fixed or anchored into the ground, while the upper end of the cantilever supports the bridge itself.
The Cantilever bridge is a widely constructed bridge all over the world. These bridges are widely adopted mainly because They do not need any support. Usually, cantilever bridges are built when providing many supports is not possible.
The cantilever bridges are mainly divided into two types:
The Balanced Cantilever Bridge does not require any falsework. Usually, this type of bridge is opted for constructing a long-span bridge.
If the bridge construction requirement is not suitable for simply supported or continuous frame type structures, then balanced cantilever bridges can be used.
We know that constructing a long-span continuous or simply supported bridge requires a solid foundation, which would be more expensive to construct.
Generally, balanced cantilever bridges are the combination of both simply supported structure and continuous structure.
The cantilever structure, which is constructed with only one cantilever length, must be small; otherwise, there may be chances of uplift at another end.
Cantilever balance Bridge has advantages of both continuous and simply supported structures. Like continuous bridges, The cantilever balance Bridge needs one line of bearings over the piers.
The continuous cantilever bridge is a truss bridge that extends across three or more supports without hinges or joints. Cantilever bridges are highly simplified, but they will explain the basic concepts of a conventional beam.
The abutments should be made heavy to compensate for the absence of a balanced cantilever. These types of Cantilever bridges work as continuous beam feet span between two support by maintaining their bending moment and Shear Strength throughout the beam.
Cantilever Bridge Advantages and Disadvantages
Top 10 Longest Cantilever Bridges in the world
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