The plate girder bridge is very stiff and it can retain very high loads while resisting the lateral movements. These sections are mainly used in bridge construction. Welded plate girders are most widely used in construction due to the ease of production and it is a much more efficient type of girder. Angle sections are used as web stiffness in revert girders.The reverts that make the connection between the web and flange angles need to be designed for horizontal shear and vertical loads that applied to the flange when they transfer to the web.Reverts need to be designed for the horizontal shear. Connection of the web and the flange is stabilized by the angel sections reverted to the flange.Generally, 90% of the shear is carried by the web.
There are connected by a mechanical method, revert, and plates are not welded together. It is a combination of flanges, web, and other necessary stiffness. There could be different classifications depending on the standards used or depending on the nature of the production of the girders. Therefore, we have to use built-up sections that can carry large bending moments and shear forces. The use of the correct material (steel) having the specified strength and doing the welding are the two main factors to be attended to when developing the plate girder.Ī plate girder is used when we need deeper sections having higher stiffness to carry heavy loads.įurther, there is a limitation in producing a hot-rolled section when the depth of the section is increased. Depending on the design requirements and as per the nature of the structure metal thicknesses for web, flanges, stiffness, etc are determined. A plate girder is a steel beam that is widely used in bridge construction.
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