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These components were conceived for use in prestressed concrete construction and are especially suited for the design of bridges, containers, and prestressed flat slabs (free tendon layout) with or without bond. The basic principle here is a 3D, element-independent tendon guide with load processing based on cubical splines.
The editing takes place in the graphical user interface, where the whole process can be monitored visually at all times.

Inclined portal frame bridge with tendons


Graphical tendon entry in the model Together with the prestressed concrete checks according to DIN 4227, DIN 1045-1, ÖNORM B 4750 and B 4753, the module complements the configuration level FEM 3D, bringing you a flexible and powerful comprehensive solution for sophisticated constructive engineering tasks.

The Bridge Checks According to DIN Technical Report complement the program suite, making it into an extremely powerful tool for bridge construction.


Bridge constructed using the cantilever method
Cantilever bridge with colored construction stages


Tendon group editing in the section

Interactive definition of a tendon group with representation of the force distribution

 



Slab bridge with bending moments from prestressing

 

System Examples: T-beam bridge, container, bridge checks according to DIN technical report

 

Features of the 'FEM Prestessing' Module
  • element-independent 3D tendon group guide
  • cubical spline function
  • prestressing of beam, shell and solid structures
  • tendon group editing on the system and in any section
  • friction, wobble and slippage
  • consideration of allowance value k
  • interactive display of the prestressing force curve and the tendon group radii
  • identification of system reactions resulting from prestressing
  • calculation of creep and shrinkage coefficients
  • creep and shrinkage with tendon group distributions
  • design and checks according to DIN 1045-1, OENORM B 4750 and EC 2

 

 

 

 

in development

Ultimate Limit State Checks
  Minimum reinforcement for securing ductile behavior
  Bending with or without longitudinal force or longitudinal force only
  Lateral force with minimum level of reinforcement
  Torsion and torsion with lateral force
  Checks against punching shear
  Checks against fatigue for concrete, bending, lateral force and
  torsion reinforcement as well as for tendons
Serviceability Limit State Checks
  Limiting the concrete compressive stresses
  Limiting the reinforcing steel stresses
  Limiting the prestressing steel stresses
  Minimum reinforcement for the limit of the crack width
  Limiting the crack width via direct calculation
  Check of decompression