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Fri, 03 Sep 2021 03:08:50 GMT

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STAAD Forum

Prabir Gupta — Fri, 03 Sep 2021 03:08:42 GMT

Hi There,

Please advise if I can model SOIL as 3D elastic half space element in Staad-Pro, where I can add steel pile and concrete slab element.

Is it possible to model material non-linearity for soil element.

Is there any provision for contact element between pile and soil.

Thanks, Prabir Gupta

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Non-Linear or Linear Cable Analysis

Prabir Gupta — Mon, 28 Nov 2016 22:14:28 GMT

Hi There: I was wondering if I can have some technical support on this issue.

I am trying to perform cable analysis for 4-cables restrained vertical vessel for seismic loading.

1.0 When, FRS seismic input is specified along with cable analysis: a) I don’t see the program performing loading steps iterations. b) The sum of support reactions not matching the applied lateral loads. c) Even the cable tension is not as expected. d) Not too sure, if the cable analysis is being performed. Please note, I have "SPECTRUM SRSS " command, "Master and Slave Rigid" command. Not too sure if the cable weight and initial tension are considered.

2.0 When, FRS seismic input is specified along with just "perform analysis" then I am getting cable forces in only 2 cables out of 4.

3.0 When I apply static lateral loads and perform cable analysis, loading steps are considered but the moment developed at the base of the vessel is huge (i.e. same as unrestrained vessel).

Steel Design Parameter

Prabir Gupta — Wed, 27 Apr 2016 16:04:32 GMT

The following steel design parameters seem to be not recognized in the latest version STAAD. Pro V8i , they use to work great in the previous versions:

LY, LZ, UNT,UNB,UNL.

These command are not giving error, but not making any changes in the results.

Any help/suggestion would be appreciated.

Thanks!!