What is the function of bearing stiffener?

What is the function of bearing stiffener?

Explanation: The function of bearing stiffener is to preclude any crushing of web at locations of heavy concentrated loads. Thus, they transfer heavy reactions or concentrated loads to the full depth of web.

How bearing stiffeners are designed?

When the concentrated load is a tension pull on the flange, the stiffener must be attached to the flange being pulled. For plate girders the usual situation is compression against the flange. Bearing stiffeners transmitting compression loads are designed as columns under the provisions of LRFD-K1.

Where are stiffeners required?

Stiffeners are secondary plates or sections which are attached to beam webs or flanges to stiffen them against out of plane deformations. Almost all main bridge beams will have stiffeners.

What are the different types of stiffeners provided in plate girder?

Stiffeners are classified into two types :

• Vertical Stiffeners.
• Horizontal Stiffeners.

How many types of stiffeners are provided in plate girder?

two types
Stiffeners are classified into two types : Vertical Stiffeners. Horizontal Stiffeners.

What are longitudinal stiffeners and how are they provided?

The primary function of longitudinal stiffeners is to control lateral web deflections [11.20], and hence the bend-buckling strength as discussed in Sec. The stiffener used should be stiff enough so that when buckling occurs, a nodal line will be formed along the line of the stiffener.

Where bearing stiffeners are provided?

Bearing Stiffeners are provided at the points of concentrated loads, to protect the web from the direct compressive loads.

What is stiffener plate?

Stiffeners are secondary plates or sections which are attached to beam webs or flanges to stiffen them against out of plane deformations. Almost all main bridge beams will have stiffeners. Deep beams sometimes also have longitudinal web stiffeners.

Why are stiffeners important in construction?

The function of a stiffener is to improve rigidity in general and to keep various sections of scenery on the same plane. Stiffeners are not just for walls made of flats, but this type of construction does provide a good example of the principles involved. This creates a very stable structure.

How many stiffeners are provided in plate girder?

Vertical Stiffeners These are again classified into two types namely end stiffeners and intermediate stiffeners based on their position in the plate girder.

What is the function of the bearing stiffener?

The bearing stiffeners are provided to prevent the web from crushing and buckling side way, under the action of concentrated load.

What is the use of stiffener in plate girder?

Stiffeners- As name suggest, stiffeners are used to make plate girder stiff or rigid. Stiffeners are typically plate welded to the web. These plate cab be applied to either just one side of the web or both side.

What is the difference between plate and girders?

Sometimes, plate are use under heavy concentrated load to increase bearing resistance called bearing stiffeners. Plate girders are composed of steel plates welded together. These girders have usually big sections, and as a result the plates have often high slendernesses, particularly the webs.

Are plate stiffeners essential as transverse stiffeners?

Generally, they are not essential as transverse stiffeners. However, we can see these stiffeners used in highway bridges in deep beams. Transverse stiffeners are used to increase shear capacity of web. Sometimes, plate are use under heavy concentrated load to increase bearing resistance called bearing stiffeners.