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External Diaphragm [EX1-STG]

External Diaphragm [EX1-STG]

Please follow the instructions provided below to create External Diapgrahm.

1

Navigate to Bracing > External Diaphragm

Several structural elements are used to ensure that the two Tub Girders work together structurally, and one of these elements is the "External Diaphragm”.

 

 

2

Click three-dots icon on Girders cell and pick the two Tub Girders (G1 & G2) between which the External Diaphragm will be placed.

3

Define 5 External Diaphragms with the following inputs.

 

4

Also Skew Angle value is 0.

5

Since our project has 4 pier-end points, assign the "Pier-End" type to the External Diaphragm for the first 4 rows.

Assign the "Intermediate" type to the External Diaphragm for the last row.

 

 

6

Click three-dots icon on Select Pier/End cell and pick location as in the figure.


Enter 260 for the "Station [ft]" cell of the last line.

7

Enter the following data for Offset from Pier/End [ft] as in the figure

 

8

Click three-dots icon on Material cell and assign the material type of all external diaphragms to A709_50W.

9

You can make adjustments to the "Section Details" and "Stiffener" tabs if you wish.


1

Navigate to External Diaphragm under Bracing on the tree view.

2

Copy Location, Section Details and 3D Details from model inputs and paste into OpenBrIM.

The External Diaphragm that have been created are illustrated below.


 

External Diaphragm

External Diaphragm

Location

Section Details

3D Details

EXTDIA1 [G1,G2] 0 Pier-End 10 Abut1 1.5 A709_50W EXTDIA2 [G1,G2] 0 Pier-End 10 Pier2 0 A709_50W EXTDIA3 [G1,G2] 0 Pier-End 10 Pier3 0 A709_50W EXTDIA4 [G1,G2] 0 Pier-End 10 Abut4 -1.5 A709_50W EXTDIA5 [G1,G2] 0 Intermediate 260 NULL 0 A709_50W
EXTDIA1 YES YES 1.75 15 1 1 15 0.625 1 EXTDIA2 YES YES 1.75 15 1 1 15 0.625 1 EXTDIA3 YES YES 1.75 15 1 1 15 0.625 1 EXTDIA4 YES YES 1.75 15 1 1 15 0.625 1 EXTDIA5 YES YES 1.75 15 1 1 15 0.625 1

 

EXTDIA1 2.5 NO EXTDIA2 2.5 NO EXTDIA3 2.5 NO EXTDIA4 2.5 NO EXTDIA5 2.5 NO

 

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