Introduction of Beam Bridge
A beam bridge is a structure in which a road is built over it without physical obstruction (such as a water body, valley, road, or rail ).
The function of the beam bridge is to pass through the barrier. A beam bridge should be built where it is difficult or impossible to get from one place to another.
Many different designs of bridges serve a specific purpose. Bridges are built for a specific purpose in different situations.
Bridge designs vary depending on various factors, such as the work of the bridge, the construction of the bridge, and its location. In addition, it depends on the material used to build the bridge and its quality.
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What Is a Beam Bridge?
The Beam Bridge is also known as the Second Stringer Bridge. The design for this type of beam is fairly simple structural. It is supported by an abutment or pier at each end.
A beam bridge is a commonly used bridge. A Beam bridge is a type of girder bridge. The bridge’s main purpose is to provide a way to go from one end to the other.
A beam bridge is the simplest and cheapest type of bridge.
The most basic form of beam bridge consists of a horizontal beam supported by piers or abutments at each end. In this type of bridge, the weight of the beam pushes directly down on the pillars or abutment.
This type of beam should be strong enough not to bend under force due to its own weight and traffic. When compression force is applied to a load beam.
Then the top edge of the beam feels compression. And tension force is applied to the bottom edge. At the beginning of the bridge, simple beam bridges were made of wooden planks or stone slabs.
Bridges in modern infrastructure are usually made of steel or reinforced concrete, or a combination of both. Materials like solid reinforced, precast concrete or post-tensioned, etc., can be used. Modern bridges include girder, plate girder, girder bridges, etc., in beam bridges.
Beams can be used for different spans in bridges. Beam bridges are used in some viaducts. Like the Fungjiang Bridge in China, it is made from various beams supplied on the pier.
Types of Beam Bridges
Beam bridges are categorized according to the criteria and as required in different situations. These are as follows.
- Straight Beam Bridge
- Curved Beam Bridge
- Tapered Beam Bridge
# Based on the Shape of the Cross-Section of the Bridge
- I-Beam Bridge
- T-Beam Bridge
- C-Beam Bridge
1. Based on the Geometry
1. A Straight Beam, Curved Beam Bridge
Bending moment and shear force are generated depending on the shape of the straight beam. When a curved beam produces shear force, bending moment, and torsion load according to its shape.
2. Tapered Beam
This type of beam is designed to analyze the distribution of stress and displacement. In addition, a tapered beam is constructed subject to the tip-bending girder.
2. Based on the Shape of the Cross-Section of the Bridge
1. I-Beam Bridge
I-Beam is economical and pre-fabricated. Which is made from material made from ms steel. The horizontal components of the eye beam are fixed with flanges on the vertical member.
2. T-Beam Bridge
In a T-shaped bridge, the top is held as a flange or compression member to resist compressive stress. The shear in the web portion below the compression flange resists stress and resists forces such as compression and tension.
3. C-Beam Bridge
C-beams are also called channel beams. Channel beams can be made from materials like concrete, steel, and heavy wood, channel beams carry, etc. c beam for load-carrying action in the bridge.
How Does a Beam Bridge Works?
The beam is formed by the component of the horizontal beam in the bridge. The load coming from the beam bridge pushes the pier. The pier transfers the load coming from the bridge to the base due to heavy traffic.
The total weight of the beam in the beam bridge is the pressure on the support. The beam should be strong enough to withstand its own weight and the force coming through the movement of traffic. The strength of the beam bridge depends on the span between the two pillars.
The Structure of the Bridge Is Classified into Three Parts.
- Substructure
- Superstructure
- Deck of the Bridge
1. Substructure
This structure includes foundations like a pier, abutment, pile, etc. The weight of the bridge through the base transfers the load underground.
2. Superstructure
The superstructure of the bridge is the support beams, the bridge which is installed between the two supports.
3. Deck of the Bridge
The function of the bridge deck is to carry the force generated due to the speed of traffic from one end to the other.
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Advantage of Beam Bridge
- The beam bridge is very useful and easy for short spans.
- The method of constructing a beam bridge is simple and straightforward.
- The beam bridge is used for the pathway in the railway station.
- The beam bridge can be used by increasing the number of beams on the piers for long distances.
- This type of beam is formed in part between the truss bridge and the arch bridge.
- Form Beam Bridge is used for short-term beam bridges. Which is the lowest cost-effective type of beam bridge construction
- This type of beam is formed between abutments or pillars where the gaps are parallel to the traffic direction.
Disadvantage of Beam Bridge
Beam bridges also prove to be expensive for short spans. Because it uses expensive steel and concrete as building materials. Which is very expensive.
Supporting a beam bridge proves to be very expensive when intended for use for very long spans.
Beam Bridge Famous Example
Famous Beam Bridges
An example of this is the world’s longest continuous-span beam bridge. The Lake Pontchartrain Causeway in Louisiana is almost 24 miles long. It’s a pair of two-lane sections that run parallel to each other. The southbound lane, finished in 1956, is made up of 2,243 separate beam bridge spans.
Who Built the First Beam Bridge?
The Romans
The first bridge to be documented was described by Herodotus in 484 b.c. It consisted of timbers supported by stone columns, and it had been built across the Euphrates River some 300 years earlier. Most famous for their arch bridges of stone and concrete, the Romans also built beam bridges.
Beam Bridge Facts
The first reinforced concrete girder (beam) bridge was built in 1903, but the design was apparently never widely used for small structures.
Beam Bridge History
A beam bridge or girder bridge is the simplest and oldest bridge type. It generally consists of one or more spans which are supported by an abutment or pier at each end.
The first beam bridges built by humans appeared as an imitation of nature – prehistoric humans saw a tree that had fallen across a stream and used the same technique nut in places where it was convenient for them.
Types of Beam Bridges
Such modern bridges include girder, plate girder, and box girder bridges, all types of beam bridges. Types of construction could include having many beams side by side with a deck across the top of them to a main beam on either side supporting a deck between them.
Beam Bridge
The simplest beam bridge could be a log (see log bridge), a wood plank, or a stone slab (see clapper bridge) laid across a stream. Bridges designed for modern infrastructure will usually be constructed of steel or reinforced concrete, or a combination of both. The concrete elements may be reinforced, prestressed or post-tensioned. Such modern bridges include girder, plate girder, and box girder bridges, all types of beam bridges.
T Beam Bridge
T-beam bridge
Tee beam bridges have cast-in-place, reinforced concrete beams with integral deck sections to either side of the tops of the beams. In cross-section, the beams are deeper than their deck sections, which produces the T-shape that gives them their names.
I Beam Bridge
I-Beam style bridges also come with a variety of options that allows for customization. Brackets can be added to the bottom of the structure to accommodate handrailing up to 54” in height. If handrailing is not needed, then 3” wooden curb mounts can be used. I-Beam-styled bridges can be designed to accommodate equestrian loads as well as light utility vehicles up to 2,000 lbs.
Beam Bridges in the World
Iconic Beam Bridges of the World
- Manchac Swamp Bridge, United States
- Tianjin Grand Bridge, People’s Republic of China
- Lake Pontchartrain Causeway, United States
- Donghai Bridge, People’s Republic of China
Beam Bridge Description
A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually something that is otherwise difficult or impossible to cross.
Steel Beam Bridge
Most steel beam bridges in Ohio consist of four or more lines of beams that are continuous over the piers (no joints except at the ends/abutments). The steel beams consist of either rolled, wide flange beams or built-up girders (for longer spans) made up of flanges, webs, and stiffeners welded or riveted together. It is important to recognize the difference between rolled beams and built-up girders.
Simple Beam Bridge
Simple Beam Bridge
In bridge: Beam supports, it is called a simply supported beam bridge. If two or more beams are joined rigidly together over supports, the bridge becomes continuous.
Beam Bridge Construction
Beam Bridge Construction
In its most basic form, a beam bridge consists of a horizontal beam that is supported at each end by piers. The weight of the beam pushes straight down on the piers. The beam itself must be strong so that it doesn’t bend under its own weight and the added weight of crossing traffic.
Beam Bridge Structure
The beam bridge structure comprises a deck, joist, pier, and abutment.
Beam Bridges Around the World
Beam Bridges
- Donghai Bridge. Situated in China, the Donghai Bridge is one of the longest sea bridges in the world, measuring 32.5 km (20.2 miles).
- King Fahd Causeway (Bridges).
- Tokyo Gate Bridge.
- Akatsuki Bridge.
- Forth Bridge.
- Howrah Bridge.
- Quebec Bridge.
- Iron Bridge.
Beam Bridge Cost
The average cost of a beam bridge is roughly $100/sq. Ft all the way to about $580/sq.