Structure > Tendon > New/Modify
Generation and modification of tendon profiles and specification of the physical parameters / Definition of stressing limits for pre-stressing tendons
| Setting | Description | ||||||||
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| Tendon from, Tendon to, Step | Tendon profiles to be defined or modified | ||||||||
| Description | Descriptive text for the tendon profile(s) (max. 80 characters) | ||||||||
| Tendon geom. | Type of the tendon profile with respect to the geometry definition
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| Master profile | Number of the related master tendon profile defining the tendon geometry (only available for Tendon geom. of the type Slave profile) | ||||||||
| Slave bounds | Start/End position of the slave tendon within the first/last element given by the ratio x/l. (Note: For the end position the default value of 0.0 is interpreted as 1.0 (i.e. the end of the element)). | ||||||||
| Material | Tendon material - Selection from the list (Note: The material must have been imported first into the database(File > Load Default Properties )). | ||||||||
| Tendon type |
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| Number | Number of tendons in the tendon profile(s) (for each if from/to/step specified) | ||||||||
| At | Nominal area of one tendon of the tendon profile | ||||||||
| Ad | Nominal area of one duct of the tendon profile | ||||||||
| Friction | Coefficient of friction between the tendon and the duct | ||||||||
| Beta | Accidental deviation angle (Angle/Length) (Refer to the User Manual for checking the difference to the "Wobble factor" specified in various design codes!) Beta can be evaluated automatically from the Wobble factor which can be input when clicking the drop-down menu. (The value for Friction must have been defined first in order to be able to evaluate Beta). |
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| PT-Force | Nominal prestressing force of pre-tensioned tendons (force in the tendon before cutting the connection to the external anchor points). In draped tendons the force is related to the direction of a straight connection between start and end point, assuming hold down forces acting normal to this direction. | ||||||||
| sl-b, sl-e | Sleeve lengths at begin and end of the tendon(s) (mainly for pre-tensioned tendons) | ||||||||
| dl-b, dl-e | Development lengths at begin and end of the tendon(s) (for pre-tensioned tendons - Type Pre-tensioned). | ||||||||
| Stress Optimization | Options which allow for defining the stress limits for prestressing tendons generally prescribed by the respective design codes The values can be defined by the factor Fact. of SIGP (see Schedule > Stages > Tendon Actions ) or directly be given as stress values Sigma (the values will be recalculated from one another). Default values are automatically set according to the selected design code of the project (currently only implemented for AASHTO LRFD, EC and DIN-FB). Standard default values are set for all other codes. The limits are considered within the stressing actions of the tendons in Schedule > Stages > Tendon Actions. The respective option "Optimize" has to be checked there within the respective stressing action (see Schedule > Stages > Tendon Actions ). |
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| During tensioning | Allowable stress in the tendon during tensioning | ||||||||
| After tensioning at anchorage | Allowable stress in the tendon at the anchorages (i.e. begin and end of the tendon) immediately after tensioning and anchoring. Note: Only relevant for some design codes (e.g. AASHTO LRFD). In general the value would be set to the same as below. | ||||||||
| After tensioning along tendon | Allowable stress in the tendon elsewhere along the length of the tendon away from anchorages immediately after tensioning and anchoring. |