Importing/transferring a model from Structure Wizard into Staad Pro

Tirrell Day — Thu, 09 Apr 2020 18:27:02 GMT

Hello,

I am using Staad Pro Advanced Connect Edition.

I am trying to analyse a plate with multiple holes. To accomplish this task I am using the structure wizard

module for polygonal plate with holes under surface or plate models. I have successfully created the model and

after several failed attempts at transferring this item into the Staad.Pro via the 'merge Model with Staad.Pro

Model' under the file menu, I've saved the .stp file for later access. After selecting the merge command, I am

prompted whether I would like to merge this prototype with my current STAAD.Pro model. After clicking yes,

however, the module disappears but the 'Paste Prototype Model' dialog box which is outlined in the tutorial never

appears. Also Staad.Pro remains inactive and an error is given that it is occupied by another application.

As earlier mentioned, I have saved this .stp file and attempted a work-around by now importing this earlier created

file into Staad.Pro directly via the Import/export command in the file menu of Staad.pro. This also failed at

the Cis2Link dialog with an error stating "PART/21 file does not contain an analysis model. Terminating

import..."

I should also mention that I have successfully loaded the .stp file within the Structure Wizard module and viewed it as originally created with no apparent issues.

Please advise on best course of action for executing an import of this. I can provide the file(s) if needed for your

examination.

Thanks in advance for you attention.

Multi-linear Soil Spring for Foundation Slab

Caleb Che — Wed, 25 Apr 2018 00:44:28 GMT

I am trying to run a foundation slab with multi-linear springs, representing below soil conditions, but running into "not converging" issue:

1. As a test run I modeled 2-ft thick foundation slab that is 180-ft x 60-ft. The only applied load is self-weight of the slab for a test run.

2. The soil condition below I am trying to model is a case where soil is liquefied and settles 3-in down towards the center. I am trying to apply multi-linear springs to imitate this condition where center of the slab sees no soil over first 3-in of depth but bears against the soil if the slab deflects beyond 3-in. This condition is interpolated from center of the slab towards the two ends in the long direction. I tried to do this by assigning a small stiffness value to the initial curve of the multi-linear springs then actual soil stiffness once displacement reaches the expected soil settlement.

3. After running the model I am getting warning message saying that analysis did not converge. It appears the program reads the model being unstable if any of the slab joint displacement lands within initial curve of the multi-linear springs, where the stiffness is value is very small, and the total applied load does not match with the total reaction.

Is there a command or a way to make this analysis happen and converge? In the real world, if there is gradation pattern of the soil settlement, I am expecting either slab deflects until bears against the settled soil or span between the higher elevation of the soils if the slab is stiff enough.

communities.bentley.com/.../Test-2.std

Tirrell Day's Communities Activities

Importing/transferring a model from Structure Wizard into Staad Pro

Multi-linear Soil Spring for Foundation Slab