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#65063 - 12/12/15 01:18 PM Buried PipeLine
juan Offline
Member

Registered: 08/15/11
Posts: 15
Loc: Bolivia
Hey Everybody,

I am doing Stress Analysis for Buried PipeLine app 75km long. However I'm modeling a section, app 30km, because Caesar canīt import all 75km for this reason, iīm doing for sections. I'm doing two analysis , one of 30km and other of 35km
- How I can load some properties from de section of 30km to section of 35km?
- Which properties should I load?
For properties I mean I mean the forces, stresses, displacements, restraints, etc.
Regards, WCQ

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#65066 - 12/13/15 04:30 PM Re: Buried PipeLine [Re: juan]
Richard Ay Offline
Member

Registered: 12/13/99
Posts: 6226
Loc: Houston, Texas, USA
Why do you say CAESAR II can't import all 75km?
_________________________
Regards,
Richard Ay - Consultant

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#65077 - 12/14/15 06:36 AM Re: Buried PipeLine [Re: juan]
juan Offline
Member

Registered: 08/15/11
Posts: 15
Loc: Bolivia
Yes, I forgot write that. For this reason I'm doing in two sections.

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#65093 - 12/15/15 09:24 AM Re: Buried PipeLine [Re: juan]
Dave Diehl Offline
Member

Registered: 12/14/99
Posts: 2382
Loc: Houston, TX, USA
You may not need to analyze your entire buried piping system. Any straight section that is at least 2 times the section's "Virtual Anchor Length" will contain an inert center portion (a fully restrained section). (The stress in this section is represented by a simple hand calculation.) These "inert" ranges serve as boundary conditions between those "interesting" runs that have bending and movement (around bends and tees or other bearing points).
You could have several valid models of individual bends (or several close bends) bounded by these long straight runs.
_________________________
Dave Diehl

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