What is the use of PSC girder?

Prestressed concrete (PSC) box girders are concrete sections forming a boxed shape (rectangular or trapezoidal) supported by prestressed strands. These girders are widely used for footbridges, highway bridges, and railway bridges.

Why is prestressed concrete used in bridges?

A properly engineered prestressed-concrete beam can span longer distances than a reinforced-concrete beam and it is thinner, lighter in weight, and uses less concrete without cracking or breaking.

What is PSC box girder?

With the development of the cantilever construction method, long-span prestressed concrete (PSC) box-girder bridges (i.e., continuous beam and continuous rigid frame) have been widely used with large bending stiffness, strong spanning ability, and relatively low cost.

What is girder in construction?

girder, in building construction, a horizontal main supporting beam that carries a vertical concentrated load.

What is a girder in a bridge?

Girder bridges are the simplest bridge type in structure and consist of steel beams shaped to an I-section or box section, called a plate girder bridge or a box girder bridge, respectively. Girder bridges are comprised of deck slabs, on which vehicles and people pass, and of main girders supporting the deck slabs.

What are the advantages of PSC construction?

Advantages of Prestressed Concrete:

• Prestressed concrete members are free from cracks and the resistance to the effect of impact, shock, and stresses are higher than rcc structures.
• Longevity of prestressed structure is greater than rcc structure because the reinforcement stays unaffected from outer agencies.

What is prestressed girder bridge?

Precast prestressed girders are a type of concrete girder that facilitates the rapid construction of a bridge using girders fabricated off-site and then transported and erected into place at the job site. The smaller cross-section size reduces the self-weight of the beam by requiring less concrete.

What is the purpose of box girder bridge?

The box is typically rectangular or trapezoidal in cross-section. Box girder bridges are commonly used for highway flyovers and for modern elevated structures of light rail transport. Although the box girder bridge is normally a form of beam bridge, box girders may also be used on cable-stayed and other bridges.

Why is a girder important?

A girder is simply a type of support beam. It is the main horizontal support of a structure or the large beam that supports smaller beams. Girders may also take on a box or Z shape, as well as other forms. The industry typically uses girders to build bridges, as well as trusses for buildings and other structures.

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