Question

Design a bearing stiffener for a welded-plate girder with the following specifications:

Web = 1000 mm × 6 mm

Flange = 2 No’s of 320 × 20 mm plate on each side

Support reaction = 300 kN, and

width of support = 300 mm.

Answer 1

1. Determine the required bearing stiffener length:
The length of the bearing stiffener should be sufficient to transfer the support reaction to the web of the girder. In this case, the support reaction is given as 300 kN, and the width of support is 300 mm.
2. Calculate the required area of the bearing stiffener:
The required area of the bearing stiffener can be calculated using the formula: Area = Support Reaction / Bearing Stiffener Length
3. Determine the dimensions of the bearing stiffener:
Based on the provided specifications, the web of the girder is 1000 mm × 6 mm, and the flange consists of 2 plates, each measuring 320 mm × 20 mm.

Considering these dimensions, you can design the bearing stiffener by selecting appropriate plate sizes, thicknesses, and welding configurations to meet the required area.

Please note that detailed engineering calculations and considerations, such as material properties, plate connections, and other design factors, are essential for a comprehensive design. It’s recommended to consult with a professional structural engineer or refer to relevant design codes and standards for a precise and safe bearing stiffener design.