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FCM Bridge Created Edited

FCM Bridge Wizard - Tendon

Type 1

Structure-Wizard-FCM Bridge-Tendon type1.png

Tendon Tab dialog box (Type1)

 

Tendon and Prestress

Specify the tendon placement and magnitude of prestress. Check off the box not to consider the tendon placement.

 

Tendon Property

Specify the types of the top and bottom tendons. Click the ....png to the right of the selection fields to prompt the "Tendon Property" dialog box to add or modify tendon properties.

 

Jacking Stress

Specify the tensioning stresses for the top and bottom tendons.

Su

Ultimate tensile strength

Sy

Yield strength

 

Tendon Anchorage Number

Specify the number of tendons anchored to each segment.

Top Tendon... top tendon.png

Number of top tendons anchored

NOTE.png "Unequal" may be selected in the dialog box to specify the number of top tendons anchored to each segment of each pier separately.

Bottom (Side)... bottom side.png 

Number of bottom tendons anchored to each segment in the span of the buttress and FSM side (end span).

NOTE.png "Unequal" may be selected in the dialog box to specify the number of bottom tendons anchored to each segment of each end span, left and right separately.

Bottom (Mid)... bottom mid.png

Number of bottom tendons anchored to each segment in an interior span.

NOTE.png "Unequal" may be selected in the dialog box to specify the number of bottom tendons anchored to each segment of each interior span separately.

 

Section Type

1 Cell

No interior web is present.

2 Cell

A single interior web partitions the PSC box.

 

H1, H2, H3...

Referring to the guide diagram, enter the tendon locations and spacings.

Web Tendon web tendon.png

Referring to the guide diagram, enter the positions and spacings of the top tendons located within the width of the web.

Tendon Number tendon number.png

Enter the number of tendons in various positions. "Unequal" may be selected to specify irregular tendon placements - top tendons over each pier and bottom tendons in each span.

NOTE.png N7 and N8 represent the numbers of tendons placed in the FSM zone.

 

Anchorage Position

Define the anchorage position of the bottom tendons in the segments.

x

Anchorage distance relative to the segment length (refer to the diagram)

NOTE.png Anchorage Position is defined to consider the anchorage of tendons installed inside for PSM (Precast Segment Method).

 

Top Tendon Grouting

Specify the timing of grouting top tendons. Once the ducts are grouted, the transformed section properties are subsequently considered. The input signifies the timing of incorporating the transformed properties.

Prestressing step

Grouting takes place at the time of tensioning the tendons.

Every n Stage

Grouting takes place at every n stages. If n=1is entered, the grouting is assumed to take place at the next stage after the corresponding tendons are stressed. If n=2 is entered, the grouting is assumed to take place at the third stage after the two corresponding segments have been stressed.

 


 

Type 2

Structure-Wizard-FCM Bridge-Tendon type2.png

Tendon Tab dialog box (Type2)

 

Tendon and Prestress

Specify the tendon placement and magnitude of prestress. Check off the box not to consider the tendon placement.

 

Tendon Number...

Structure-Wizard-FCM Bridge-Tendon-Tendon Number.png

Symmetry

Select the option for symmetrical tendon placement.

Asymmetry

Select the option for non-symmetrical tendon placement.

Unequal Data

Number of Cell : Number of Cells of PSC Box Section defined in Section tab

Position

Define the location of tendons to be placed. When 1 Cell Section with Symmetry option is selected, only one Position exists. When 1 Cell Section with Asymmetry option is selected, two positions exist. Asymmetry option will allow different tendon placements for each web, and Position 1 represents the web on the left (refer to the guide diagram).

Group

PSTG : Top slab tendon of Pier Table

PWTG : Web tendon of Pier Table

CSTG : Bottom slab tendon of interior span

CWTG : Web tendon of interior span

ASTG : Bottom slab tendon of side span

AWTG : Web tendon of side span

NOTE.png If Tendon Groups are defined, the tendon coordinates, stresses and prestress losses of the tendons can be verified for individual Tendon Groups. FCM Wizard automatically defines 6 Tendon Groups based on the tendon types.

Number of Tendon

Enter the number of tendons corresponding to each group. This number sets the number of rows in the tendon input table under the Tendon tab.

 

Tendon Group

Name of Tendon Group

 

Group Baseline

Referring to the guide diagram, enter the Baseline of each Tendon Group. For example, to define the tendons of PSTG (top slab tendons of the pier table), use one of the tendons of PSTG as the Baseline reference and specify Bi to enter the remaining tendons. The use of Group Baseline simplifies the input of tendons of each Tendon Group.

 

Tendon

Bi

The horizontal distance from the Baseline to the tendon. The left of the Baseline is considered (+) positive and the right side is considered (-) negative. If 0 is specified for the Baseline, the horizontal distance from the center of the section to the tendon is entered.

Hi

The vertical distance from the section top edge or bottom edge to the tendon

 

For PSTG and PWTG, the vertical distance from the section top edge to the tendon is specified.

 

For CSTGCWTGASTG and AWTG, the vertical distance from the section bottom edge to the tendon is specified.

 

Anchorage

Ai

Enter the distance from the Segment end to the point of Anchorage in the longitudinal direction. Enter 0 for the Anchorage, which is located at the Segment end.

Bi

Enter the distance from the Baseline to the Anchorage across the section.

Hi

Enter the vertical distance from the section top edge or bottom edge to the Anchorage.

 

For PSTG and PWTG, enter the vertical distance from the section top edge to the Anchorage.

 

For CSTGCWTGASTG and AWTG, enter the vertical distance from the section bottom edge to the Anchorage.  

 

Ri

Enter the radius of curvature of the tendon.

Θi

Enter the slope of the tendon.

Segment

Select the Segment in which the Anchorage is included. By default, P.T. (Pier Table) is specified. If the Anchorage is located at a Segment other than P.T., select a relevant Segment. Segments in the drop-down list are automatically generated in an equal number of Segments entered in the Model tab.

 

FCM Anchorage

Define the Anchorage positions of the tendons in side spans. This becomes active only for the Tendon Groups (ASTG and AWTG) of side spans.

Ai

Enter the distance from the Segment end to the point of Anchorage in the longitudinal direction. Enter 0 for the Anchorage, which is located at the Segment end.

Bi

Enter the distance from the Baseline to the Anchorage across the section.

Hi

Enter the vertical distance from the section top edge or bottom edge to the Anchorage.

 

For PSTG and PWTG, enter the vertical distance from the section top edge to the Anchorage.

 

For CSTGCWTGASTG and AWTG, enter the vertical distance from the section bottom end to the Anchorage.

 

Ri

Enter the radius of curvature of the tendon.

Θi

Enter the slope of the tendon.

Segment

Select the Segment in which the Anchorage is included. By default, P.T. (Pier Table) is specified. If the Anchorage is located at a Segment other than P.T., select a relevant Segment. Segments in the drop-down list are automatically generated in an equal number of Segments entered in the Model tab.

 

Tendon Property

Specify the types of the top and bottom tendons. Click the ....png  to the right of the selection field to prompt the "Tendon Property" dialog box to add or modify tendon properties.

 

Jacking Stress

Specify the tensioning stresses for the top and bottom tendons.

Su

Ultimate tensile strength of tendons

Sy

Yield strength of tendons

 

Top Tendon Grouting

Specify the timing of grouting top tendons. Once the ducts are grouted, the transformed section properties of tendon and grout are subsequently considered. The input signifies the timing of incorporating the transformed properties.

Prestressing step

Consider introducing tensioning of tendons and simultaneous grouting.

Every n Stage

Grouting takes place at every n stages. If n=1 is entered, the grouting is assumed to take place at the next stage after the corresponding tendons are stressed. If n=2 is entered, the grouting is assumed to take place at the third stage after the two corresponding segments have been stressed.

 

FCM Tendon Viewer

 

NOTE.png FCM Tendon Viewer shows the input state of Section and Tendon at Center and Pier Table. In the diagram above, the gray area represents the section at Center and the area enclosed by solid lines represents the section at Pier Table. The dots represent Tendons and the rectangle (  ) enclosing a dot represents anchorage. The tool bar icons in the middle signify Zoom all, Zoom window, Zoom in and Zoom out respectively. The mouse wheel is used to Pan the view. The figure below shows a view when the Pan function is executed.

 

 

Place the mouse cursor over the dots representing Tendon or Anchorage, and right-click to prompt a tooltip and display Tendon and Anchorage information at the bottom of the View. The user can define colors for Tendon Groups by selecting a Tendon Group from the combo box at the bottom followed by assigning a color.

 

Tendon Groups are expressed differently for Center and Pier Table as follows:

Center : CSTG, CWTG, ASTG, AWTG

Pier Table : PSTG, PWTG

 

Open... open.png

Open the data saved as in the *.wzd file type in the FCM Bridge Wizard. By using this function, we can re-execute midas Civil and subsequently check and modify the previously entered data within the Wizard.

 

Save As... save as.png

Save the data entered in the FCM Bridge Wizard as the *.wzd file type.

 

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