Modeler > Tendons > Tendon Geometry

Tendon points can be input interactive graphically by using the graphic pad.

Geometry

Tendon point: Info (Interactive graphically input)

How to Input the New Point?

If the tendon-point list below has no input yet, the icon INSERT BEFORE/AFTER can be pressed. You have access to select desired point stations for defining the tendon profile.

If there are existing tendon points in the table, one tendon point in the list should be chosen first, then use the (INSERT BEFORE/AFTER) icons to add a new point.

After choosing one of the icons, the upper input pad will be activated.

Each change in the input data will be immediately shown in the graphic window.

After Recalculate the tendon geometry, user can see different views of tendon definition.

How to Modify the Tendon Point?

You can modify the point station position by double click over the value and editing the point stations list or inserting the desire value. The further process is the same as for input the NEW POINT.

All data in the table can be edited by double click over the value, and user can choose above the listed options presented or insert the desire value directly.

How to Delete the Tendon Point?

The point to be deleted should be chosen from the list and then Delete button must be pressed.

Setting	Description
Element no.	Number of the segment element which used for defining tendon (automatically fulfilled by the program).
Station	Tendon Station - You can modify the value by double clicking on the desired cell or introducing a new value.
X/L	The point along the Reference Element (distance defined as a proportion of the element length), from which the tendon geometry will be defined. You can modify the value by double clicking on the desired cell.
Type	Type of a Tendon Point used in the tendon geometry calculation. Normal - specifies fixed points based on a reference polygon for internal or external tendons. The tangent at this point can be set as free or constraint (value). Elevation and plan are separately calculated, i.e., it is possible to prescribe the direction in the elevation and to let it free in the ground plane or vice versa. Intersection Point (External) – Intersection point of the tangent describing the cable Parts of the tendon. This point is theoretical, and the tendon will not go through. The value of the radius indicates the radius of the arc tangent to both cable parts. Line - Start point of a straight tendon section for internal or external tendons. The tendon direction is automatically defined by the positions of this point and the next point. In the case of External tendon, this point is not defined in Y and Z (Free), and It will be automatically projected on the tangent linking 2 intersection points. In this case, Nelem must be filled and it will be the number of the Cable element used in analytic part to represent the straight part. For external tendon, the line point indicates the end of the concrete part. Free (External Tendon) – A free point must be placed before the intersection point. This will indicate the end of the cable part, and the beginning of the inside concrete part of the tendon. Y and Z are automatically computed by the software by projection on the tangents. Note: In the case of External tendons, the program will internally automatically add free points at tangent point between straight and curved part. These points will not appear in the list.
Point relative to	CoG: If this option is selected, the tendon position refers to the cross-section center of gravity Part: If this option is selected, the tendon position refers to the part reference point in the cross-section CS Point: If this option is selected, the tendon position refers to certain cross-section geometry point
CS point	If point relative to CS point is selected, the desired name in cross-section point need to be selected graphically.
ey	The eccentricities for the tendon in vertical direction with respect to the local axis system. (eccentricity: local)
ez	The eccentricities for the tendon in transversal direction with respect to the local axis system. (eccentricity: local)
Alpha relative to	CoG: If this option is selected, the tendon angle refers to the cross-section center of gravity Part: If this option is selected, the tendon angle refers to the part reference point in the cross-section CS Point: If this option is selected, the tendon angle refers to certain cross-section geometry point
Alpha 1	Angular constraint in the vertical direction relative to the Reference Element orientation. You can select "Free" or desired "Value" for the tangent in tendon geometry by double clicking in the desired cell.
Alpha 2	Angular constraint in the horizontal direction relative to the Reference Element orientation. You can select "Free" or desired "Value" for the tangent in tendon geometry by double clicking in the desired cell.

Note: After Recalculate the tendon geometry (green arrow in bottom table), user can see different views of tendon definition.