RM Analyzer Help

Structure > Tendon > Geometry

Creation and modification of the table of tendon profiles, viewing and modifying the tendon geometry and basic parameters

The tendon points for all the existing tendons can be viewed in the bottom table. The existing tendons with their material assignment, number of cables, nominal areas and duct areas are shown in the top table. Input of new tendons with their constraint points can be done manually or in an interactive graphical way (icon "I"-Information above).

SettingDescription
Upper table - table of tendon profiles
SettingDescription
TdNum  Number of the tendon profile
Type Type of the tendon geometry
  • Normal: Tendon profile used in the analysis with own geometry definition
  • Master geom.: Pseudo tendon profile with the geometry used as template
  • Slave geom.: Tendon profile with the geometry taken from a master profile
Master No. of the related master tendon profile defining the tendon geometry (only for tendon geom. type "Slave geom.")
Mat Tendon material
Numb Number of tendons in the tendon profile
At Nominal area of one tendon of the tendon profile
Ah (for post-tensioned tendons) Nominal area of one duct of the tendon profile
Beta (for post-tensioned tendons) Accidental deviation angle (Angle/Length) (refer to the User Manual for checking the difference to the "Wobble factor" specified in various design codes!)
Frict. (for post-tensioned tendons) Coefficient of friction between tendon and duct
Note: For post-tensioned tendons the force calculation (stressing sequence, losses along the tendon due to friction and wedge slip) is performed in Schedule > Stages >  Tendon Actions.
Status
  • Act: Tendon profile active
  • Dact: Tendon profile not active
Grout
  • Yes: Tendon profile already grouted
  • No: Tendon profile not yet grouted
sl-b, sl-e  (for pre-tensioned tendons) Sleeve lengths at start and end of the tendon(s)
dl-b, dl-e  (for pre-tensioned tendons) Transfer lengths at start and end of the tendon(s)
PT Force (for pre-tensioned tendons) Prestressing force in the pre-stressing bed (before transfer)
Note: For pre-tensioned tendons the stressing force in the pre-stressing bed before transfer, is directly defined and assumed constant over the full length. Losses due to elastic shortening at transfer are automatically calculated in the action PreTens. Bond is also established in this action, i.e. separately using the action grout is not required. Sleeve lengths along which bond is fully disabled (e.g. by covers) may be defined at begin and end of the tendons. In addition, the user may define transfer lengths where bond is not fully effective.
Lower table - table of tendon points
SettingDescription
Type Type of the tendon point:
  • Normal: normal tendon point of an internal pre-stressing
  • Line: tendon point type "Line" of an external tendon
  • Line (free Y): point type "Line" with free Y coordinate (external tendon)
  • Line (free Z): point type "Line" with free Z coordinate (external tendon)
  • Intersection point: tangent intersection point (external tendon)
  • Free node at element: additional point for better circle approximation (external)
  • Intersection point (free): free tangent intersection point (external tendon)
Elem Element number for the definition of the tendon point geometry
Rel Object the geometry is related to:
  • empty: 3D global coordinate definition of the tendon point
  • Elem: Geometry parameters related to element axis
  • Nod: Geometry parameters related to node axis
  • CSP: Geometry parameters related to cross-section point axis
CS pnt Cross section point to which the geometry parameters are related
x/l or X Position along the reference element (related distance from element begin) or 3D X coordinate in case of 3D definition
Ey or Y Vertical distance from the point on the reference element  or 3D Y coordinate in case of 3D definition
Ez or Z Horizontal distance from the point on the reference element or 3D Z coordinate in case of 3D definition
Rel Object the geometry is related to:
  • Elem: Angle definitions related to element axis
  • Nod: Angle definitions related to node axis
  • CSP: Angle definitions related to cross-section point axis
alph1 Defined angle in the x/y plane for the definition of the tangent direction or x component of the tangent direction vector in case of 3d definition
alph2 Defined angle in the x/y plane for the definition of the tangent direction. or x component of the tangent direction vector in case of 3d definition
dz z component of the tangent direction vector in case of 3d definition
Line External Element check button - only for tendon points of the "Line" types for defining a straight external tendon section
NElem If Line = Yes: Structural element number of the straight tendon section
Radius For tendon point type Intersection point: Rounding radius of tendon geometry