MSS Bridge Created Edited

# MSS Bridge Wizard - Tendon

## Type 1

Enter the positions and spacings of the web tendons.

MSS Bridge Wizard Tendon dialog (Type 1)

### N, G1, G2, …, S1, S2, …, C, a1, a2

Referring to the guide diagram, enter the number and the positions of the tendons.

### Tendon Property

Specify the type of tendons. Click the  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 stress for the tendons.

#### Su

Ultimate tensile strength

Yield strength

### Grouting

Specify the timing of grouting 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.

### a, b, c

Referring to the guide diagram, enter the dimensions for defining the tendon.

### Open...

Open the data saved as a *.wzd file type in the MSS 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 the data entered in the MSS Bridge Wizard as an *.wzd file type.

## Type 2

Define the layout of straight or curved tendons by entering the distances from the top and bottom of the girder, the angle of inclination of the tendon and the radius of curvature at an inflection point.

MSS Bridge Wizard Tendon dialog box (Type 2)

### N, C1~C4, G1~G6, S1,~S2, R1~R5, Theta1~Theta3

Referring to the guide diagram, enter the number of tendons and the dimensions required to define the tendon layout.

### Tendon Property

Specify the type of tendons. Click the  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 stress for the tendons.

Su

Ultimate tensile strength

Yield strength

### Grouting

Specify the timing of grouting 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.

#### Number of Cell

Number of Cells of PSC Box Section defined in Section tab

#### Symmetric

Select this option when the web tendons at each side are symmetrical.

#### Eyi

Select this option when the web tendons at each side are symmetrical.

#### θi

Enter the angle of inclination of the web tendons. The sign convention is illustrated in the figure below.

#### ai

Enter the horizontal distance from the web center to the tendon. The left of the web center is taken as negative and the right is taken as positive.

### Open...

Open the data saved as a *.wzd file type in the MSS 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 the data entered in the MSS Bridge Wizard as an *.wzd file type.

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