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.
I-beam bridges can have single free-standing spans up to 25 feet long and 16 feet wide. I-Beam bridges are constructed with the same FRP members as our long-span, truss-style bridges. This provides significant cost savings compared to short-span truss-style bridges.
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.
Some Famous Beam Bridges are:
Donghai Bridge.
King Fahd Causeway (Bridges)
Forth Bridge
Tokyo Gate Bridge.
Ikitsuki Bridge.
Howrah Bridge.
Iron Bridge.
Quebec Bridge.
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.
The costs of concrete I-beam bridges vary more widely compared to the costs of steel plate girders and rolled steel beam bridges. The price of concrete I-beam bridges can range from $100/sq. ft to approximately $580/sq. ft,
Precast Concrete Bridge Beams Sizes
Typical depths: 16 to 40 in.
Typical widths: 12 to 24 in.
Typical span-to-depth ratios: 10 to 20
Types of Beam Bridges
Beam bridges are categorized according to the criteria and as required in different situations. These are as follows.
1. Based on the Geometry
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.
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
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.
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.
C-Beam Bridge
C-beams are also called channel beams. Channel beams can be made from materials like concrete, steel, and heavy wood, etc. c beam is carried by channel beams 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 into the underground.
2. Superstructure
The superstructure of the bridge is the support beams in the bridge which are 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.
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 the part between the truss bridge and the arch bridges.
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.
I-Beam bridges can be designed for single free-standing spans up to 25′ and widths up to 16′. I-Beam style bridge is composed of the same FRP members that make up our long-span, truss-style bridge, minus the truss structure. This allows for considerable cost savings compared to a truss-style bridge in a short span.
How Much Is a Concrete Beam Bridge?
Costs for concrete I-beam bridges range more widely than costs for steel plate girders and rolled steel beam bridges. Concrete I-beam bridges cost $100/sq. ft all the way to about $580/sq. ft providing for price uncertainty.
What Is a Precast Beam Bridge?
A precast concrete box-beam bridge is composed of a series of prestressed or post-tensioned box-shaped beams. In this type of structure, longitudinal shear keys are placed between box beams and the joints are filled with concrete.
What Are the Typical Precast Concrete Bridge Beams Sizes?
This will depend on the spans, loading conditions, and the precast producer’s preferred production methods.
Typical sizes: Practically any size needed to satisfy structural requirements.
Typical depths: 16 to 40 in.
Typical widths: 12 to 24 in.
Typical span-to-depth ratios: 10 to 20.
What Size Are Prestressed Concrete Beams?
They are typically 24″ wide and range from 16″ to 40″ in depth. Lesser widths can be obtained with drop-in sides if desired. Molin also offers precast lintel beams in 7-5/8” and 11-5/8” nominal widths that range from 8″ to 40″ in depth.
