Contact US

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!

*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

Analysis of Huge Steel Structure

Analysis of Huge Steel Structure

Analysis of Huge Steel Structure

What is the suitable way (or suitable program) to analyze a steel structure having about 1000 frame elements and 31 separate case of loadings giving more than 8000 (eight thousands)combinations. I tried SAP2000 but it can not deal with this huge number of combinations.

RE: Analysis of Huge Steel Structure

You can portrait the different combinations in different runs of the model separately stored. Of course you cannot anymore directly use the automatical design features.

RISA 3D that I have is limited to 1000 combinations...all other I think owuld deal with. And only elastic + RSA, nor time history etc

RE: Analysis of Huge Steel Structure

Can you explain how you get to 8000 combinations?  It sounds to me that you need to do some clear thinking and get rid of most of them.

RE: Analysis of Huge Steel Structure

TO Austim,
Actually, this case is a big industrial factory with heavy cranes. I have 4-bays frame with 4-different cranes (their vertical and lateral forces -in two directions- are considered) In addition to dead loads ,live loads (separately considered for the four bays)and wind loadings in the two directions, so I have 31 separate cases of loadings with some conditions to minimize number of combinations (as to take lateral shock of all cranes considered in a certain combination together)I get more than 8000 combinations.

RE: Analysis of Huge Steel Structure

I got the solution by running the program SAP2000 for the separate cases of loadings (31 cases for this problem), then developing a software generating all the possible combinations from the SAP2000 output results. This developed program presented also the maximum straining actions (with their correspondings)and the enveolp for all members. These results are then linked to a spreadsheet for frame element design based on local code of design.

RE: Analysis of Huge Steel Structure

Great, an in-your-house post-processor of basic load cases output of SAP 2000 and member design. Good idea, it  may be done for any elastic solution output that give tabulated spreadsheets that are exportable.

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


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. 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