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Formulation of Equivalent Beam Load due to Prestress

  • Load / Boundary
  • Intermediate level
  • 2002.12.08

In finite element analysis, the induction of tendon prestress is represented by the application of load into the element. To accomplish this, it is necessary that a beam load, equivalent to the action of the prestress, be generated and applied to the element. It is however impractical to create an equivalent beam load, which is completely coinciding with the prestress. This is because that the load varies along the length of the beam relative to the tendon profile and the characteristics of prestress loss. Even if we attempt to cover all the local effects, too many beam loads will deteriorate the efficiency of calculations.

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