Girder Bridge

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Explore and shop for the finest Girder Bridge online at India's leading marketplace for construction materials, industrial tools, electricals, and office equipment. Our Girder Bridge offers uncompromising quality paired with competitive pricing and exceptional offers. L&T-SuFin presents you with a range of Girder Bridges from top sellers and brands, all at wholesale prices. Purchase online or request a quotation from our verified dealers. Our platform also offers flexible logistics and financing options specifically designed for Girder Bridge. 

Introduction to Girder Bridge 

Bridges that rely on girders to sustain their decks are known as girder bridges. Girders can be made of concrete or steel. Many shorter bridges are made of concrete box girders, especially in rural areas where water overflow and corrosion may be more common. 

The term "girder" is commonly used when referring to a steel beam. The beams themselves are the main framework for the deck of a beam or girder bridge. These beams are responsible for bearing the workload downwards to the base. Bridges that use both the deck slabs and the major girders for withstanding loads are known as composite girder bridges. Bridges that only use the major girders to withstand loads are known as non-composite girder bridges. 

Types of Girder Bridge

There are different types of girder bridges based on the types of girders, such as the following:

Steel Girder Bridge

For moderate to long distances, steel girder bridges are most commonly used. They are made of several sets of steel girders and span a river, a valley, or a road. The strength, lightweight, and low maintenance requirements of steel girder bridges make them a desirable choice for engineers and builders. Types of steel girder bridges: 

• Plate girder bridge

• Box girder bridge

• Tubular girder bridge

Concrete Girder Bridge

A concrete girder bridge is a kind of bridge where the primary underlying structure supporting the bridge deck is made of precast concrete girders. These bridges are often found spanning short to medium distances on highways and various transit routes. Concrete girder bridges provide a number of advantages, including great durability, inexpensive servicing, and swift and easy construction. Types of concrete girder bridges include:

• Pre-cast girder bridge

• Box girder bridge

• T-beam girder bridge

• Prestressed concrete girder bridge

• Cast-in-place concrete girder bridge

Truss Girder Bridge

A truss girder bridge is a form of bridge in which the bridge deck is supported by a sequence of interlinked triangles. Truss bridges are usually used for greater lengths. They can be composed of a broad range of components, including steel and concrete. A number of variables, such as the span length, estimated loads, and specific environmental conditions, determine a truss girder bridge's design.

Girder Bridge Design Principles

The design of a girder bridge depends on various factors and principles, such as the following:

Web Thickness and Depth

The choice of the nearly feasible optimal web depth is a highly essential design parameter for steel plate girder bridges. It is best to use uniform web depths to avoid overly high production expenses. In the case of long span bridges, however, a tapered web depth can be used to attain economy in girder design if there is a significant variance between the shortest and longest span. 

Deck Overhang and Amount of Girders

The total number of girders needs to be kept to a minimum for a cost-effective superstructure design. Further cost savings related to the bearings, transitional diaphragms, and girder fabrication will result from fewer girders. The minimal amount of girders, the maximum allowed girder spacing, and the maximum permissible deck overhang for a specific bridge width will be set by the agency's standards. After the number of girders has been defined, the deck overhang and girder spacing need to be chosen so that the outer and interior girders have almost equal performance ratios.

Diaphragm

Intermediate diaphragms can be either X-type or K-type. X-type cross frameworks are usually used when the girder spacing to girder depth ratio is less than 1.5. Suppose the spacing between the cross frames at the interior supports is smaller than 3D (D= depth of web). In that case, cross-frame connection plates shall be used as stiffener plates, avoiding any need for transverse stiffeners near the internal supports.

Flange Thickness and Width

The top and bottom flange widths of an efficient composite plate girder design are typically less than one another. The measured width of the top flanges in the compression needs to be more than or equal to the height of the girder shipping piece (inches) by 85. This is needed to ensure adequate stress checks during deck pour and to reduce out-of-plane deviations during transportation and handling.

Brands Selling Girder Bridge

L&T SuFin has included the list of the best brands that help you get the perfect girder bridge for your project. 

• East Coast

• GEC

• Generic

• GPB

• Harsha

• Kalyani

• MK

• Shree Engineers

• Skanda

• SM project India

• SSE

• TSI

• UNIQUE

• USW

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Buy Girder Bridges from L&T Su-Fin

A girder bridge is a kind of bridge that is built with girders as the primary load-carrying component. Girder bridges come in a variety of shapes and sizes to suit varying lengths and traffic loads. They can be constructed from steel, concrete, or wood. Steel girder bridges are well-known for being robust and long-lasting. They are often used for lengthy spans that call for a relatively modest depth and can be constructed in a range of designs, such as curved, straight, and skewed orientations.

L&T SuFin has created an extensive range of the best girder bridge suppliers at the best bridge rate. You can choose the ideal girder bridge for your construction project. We offer construction firms an easy way to get the desired quote for the bridge design in just a few clicks. With complete and partial deliveries on more than 21,000 codes, we offer the best services in the country. L&T SuFin also offers financial and logistic assistance if needed. 

FAQs About Girder Bridges

Q1. What is girder spacing?

Girder spacing is defined as the distance between girder lines that can be determined at the girders' work point position and laid down in a plan. The work point position specifies the vertical position on the girder midpoint from which the spacing is determined.

Q2. What role does a girder play in a bridge?

Girders are installed to withstand the total weight of the deck and pass on the load to the bridge's piers and foundations, which is an important component of their construction.

Q3. What are some examples of girder bridges?

There are many well-known examples of girder bridges around the world. Some of them are the Shibanpo Bridge, China, Stolma Bridge, Norway, Arthur Laing Bridge, Canada, Rio-Niterol Bridge, Brazil, and the Ujina Bridge, Japan.