×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Base plate design for three way bending between the stiffeners

Base plate design for three way bending between the stiffeners

Base plate design for three way bending between the stiffeners

(OP)
Hi Everybody,


I have a base plate with Stiffeners and Anchor bolts. Please help me to calculate the base plate thickness when the middle anchor bolt is subjected to tension and has stiffeners on its both sides as shown in the picture.

RE: Base plate design for three way bending between the stiffeners

You should read up on the yield line method. There’s been a few discussions on here which would be helpful. See link to thread below, the OP eventually links to a great worked example that covers your case.

https://www.eng-tips.com/viewthread.cfm?qid=210553

RE: Base plate design for three way bending between the stiffeners

Try this, based on Eurocode method.
P398

RE: Base plate design for three way bending between the stiffeners

Just eyeballing it, it looks like your stiffeners may not do too much. The plate may just bend about the face of the column flange. That's how I'd conservatively design it and eliminate the stiffeners.

If you want to take advantage of some sort of stiffeners you will have to figure out how they work. They will be locally bending the column flange where they attach and may not be stiff enough to create reliable "yield lines" in your base plate.

RE: Base plate design for three way bending between the stiffeners

Unless there is something critical about this situation, or you have so many of these base plates, costs could really add up,
I would try to simplify it.
Looking at the segment of base plate between bolt and stiffener / flange as a cantilevered segment of plate, the load
distribution to each element is proportional to the ratio of the cantilever lengths cubed.

Therefore, load to the flange = Tf / (1 + (d1/d2)^3). The remaining tension load (Ttotal - Tf) would be divided
equally between the two stiffeners. Now that you have the load (Tf or Tstiff.) acting on a cantilevered segment of plate,
you can calculate the plate moment and find the required thickness.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

White Paper - Design for Additive Manufacturing
With a growing number of parts manufactured directly by additive manufacturing techniques, it is important to lay down design principles suitable for such manufacturing processes and to ensure parts are designed for additive manufacturing. There are several factors that are to be considered at the design stage. Few such design issues in additive manufacturing are discussed in this paper. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close