How do I apply a prestress to tension members?

Answer

Define a suitable load case to correctly combine the planned prestress with the other load cases and apply a "pulling" strain load to the affected members. A pulling strain load can be, for example:


  • a negative temperature load Tc distributed uniformly via the cross-section,
  • a negative axial strain ε,
  • a negative axial displacement Δl,
  • a positive initial prestress V or
  • its positive final prestress V only in RFEM.

Input via an axial displacement is the most comprehensible input because you can directly measure the offset on the turnbuckle of a tension member.



Keywords

Prestress Tension member Failure Turnbuckle Unstable

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RFEM 5.xx

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Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

Price of First License
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