Drawn Tendon: Create and Modify - Reference to Axis#
Command |
SOF_CABD_TENDON_AXIS |
Tooltip |
Draw tendons or convert tendons from AutoCAD geometry with reference to an given axis. |
Sidebar |
SOFiPLUS > Prestressing > Drawn Tendon: Create and Modify |
Use existing AutoCAD objects such as lines, polylines, splines and arcs to create a tendon geometry or draw the geometry directly.
Before creating a tendon a geometric axis must be selected. The axis will then be used as a reference for finding the elements to be prestressed. After choosing the axis, it is possible to create tendons by:
Draw a tendon (first point - next point)
Select object
Pick lines or curves
Polygonal mode
Set working plan
To modify individual tendons use the Modify Tendons command ().
Note
Combining Slab PT with Shell PT or Beam PT in a drawing is not recommended. Of course Shell PT and Beam PT can be mixed.
During the definition of the tendons geometry the properties are given via a dialog.
General#
In addition to the name and the number, there are the following entries:
Considered Elements
By default, the TENDON program prestresses all elements found along the drawn tendon. However, by specifying an element type, you can specify that only certain element types (area or beam elements) should be prestressed. A detailed description of the available setting options can be found in the chapter ‘TGEO – Duct geometry’ of the manual TENDON.
Load Case and Prestressing System
For each tendon a load case and a prestressing system must be defined.
Considered Groups
By default, all element groups are taken into account. By specifying group numbers, however, it can be determined that only certain groups (primary and secondary groups) should be taken into account. A detailed description of the available setting options can be found in the chapter ‘GRP – Group Control’ of the manual TENDON.
Prestressing#
Stressing forces are computed automatically considering stressing sequences, wedge slip, friction, wobble, etc. The user, however, can limit the max force/stress/factor of the tendon at individual points:
Prestressing: According to AASHTO
This option is conform to the chapter ‘PAAS – Prestressing limits according to AASHTO’ of the manual TENDON.
Prestressing: According to Eurocode
This option is conform to the chapter ‘PSIG – Prestressing limits according to Eurocode’ of the manual TENDON. A description of the possibilities and the default values can be found there.
Prestressing: With Factors
This option is conform to the chapter ‘PFAC – Prestressing limits with factors’ of the manual TENDON.
Prestressing: Manual Prestressing
This option is conform to the chapter ‘PDEF – Manual prestressing’ of the manual TENDON.
Prestressing: Additional Data
This option is conform to the chapter ‘PDAT – Additional data of the prestressing’ of the manual TENDON.