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Follow the next steps to create K Top cross-frames. |
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Pick 2 Girders that the cross frame will be placed between.
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Enter the Station of the cross frame.
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Go to Sections tab.
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Import AISCL8X8X3/4 and assign it to Top & Bottom & Diagonal Chord Sections.
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Go to Gusset Plate tab, select top, bottom and center gusset plate and edit the gusset plate offset values for top, bottom and diagonal plates.
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Go to Stiffener tab.
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Edit the vertical stiffener thickness as 1 and vertical stiffener width as 7 in.
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Do not forget to assign the related material for each case. |
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Go to Geometry tab.
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Edit the offset values for top chord, diagonals, and bottom chord.
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| title | Quick Tip |
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Skew Angle parameter rotates the the unskewed line which is perpendicular the PGL.
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| title | Quick Tip |
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Follow the next steps to use parameters at the FEA Section, and understand the parametric relationship. |
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Go to Parameters tab at the FEA section.
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Enter Parameter Name and set Parameter Value.
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Go back to Cross-frame X tab.
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For the first row set Station parameter as ‘=Spacing*1’.
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For the second row set Station parameter as ‘=Spacing*2’.
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Select both of them.
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Drag down to automatically increase the multiplier of the spacing.
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Station parameter of the cross frames are now function of Spacing parameter.
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Go to Cross-frame K Top under Cross Frames on the tree view.
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Copy Location, Sections, Gusset Plate, Stiffener, Geometry from model inputs and paste into OpenBrIM.
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Completed cross frames is illustrated below. |
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After clicking on 'Superstructure> Cross Frames> Cross-frame K Top' in the navigation treeview, follow the steps to define the Cross Frame. You can use the collapsed documentation page below for more information on the explanations of each parameter. |
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| Cross-frame K Top [SIG] |
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| 3 | You can refer to the Quick Tip below to see how the Cross Frame behaves with a skew angle. | |||||||||||
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| 5 | You can edit the Section of cross frame from Sections tab.
If you have reached this stage and you don't have a section to select, and if you want to use the Import Button, you can refer to the Quick Tip. |    | ||||||||||
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| 7 | You can edit the gusset plate of cross frame from Gusset Plate tab.
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| 11 | You can edit the stiffener of cross frame from Stiffener tab.
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If you have reached this stage and you don't have a material to select, and if you want to use the Import Button, you can refer to the Quick Tip. |    | ||||||||||
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| 15 | When the steps are completed, the shared screenshot displayed in the adjacent cell should be visible in the 3D view of OpenBrIM. |  | ||||||||||
| 16 | To model all the cross frame, copy the data below and paste the parameters into the first cell in OpenBrIM spreadsheet. Refer to the quick tip for an easy guide on how to perform the copy operation. After completing the copy, proceed to the next step to verify the model. | |||||||||||
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Cross Frame K Top | ||
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Location
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Gusset Plate
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CFKT1 GSK_TOP GSK_BOTTOM GSK_CENTER 3.0000 3.0000 6.0000 1.0000
CFKT28 GSK_TOP GSK_BOTTOM GSK_CENTER 3.0000 3.0000 6.0000 1.0000
CFKT29 GSK_TOP GSK_BOTTOM GSK_CENTER 3.0000 3.0000 6.0000 1.0000
CFKT30_1 GSK_TOP GSK_BOTTOM GSK_CENTER 3.0000 3.0000 6.0000 1.0000
CFKT30_2 GSK_TOP GSK_BOTTOM GSK_CENTER 3.0000 3.0000 6.0000 1.0000
CFKT30_3 GSK_TOP GSK_BOTTOM GSK_CENTER 3.0000 3.0000 6.0000 1.0000 |
Stiffener
| Code Block |
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CFKT1 1.0000 7.0000 A709_50
CFKT28 1.0000 7.0000 A709_50
CFKT29 1.0000 7.0000 A709_50
CFKT30_1 1.0000 7.0000 A709_50
CFKT30_2 1.0000 7.0000 A709_50
CFKT30_3 1.0000 7.0000 A709_50 |
Geometry
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| Code Block |
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CFKT1 AISCL8X8X3_4 AISCL8X8X3_4 AISCL8X8X3_4
CFKT28 AISCL8X8X3_4 AISCL8X8X3_4 AISCL8X8X3_4
CFKT29 AISCL8X8X3_4 AISCL8X8X3_4 AISCL8X8X3_4
CFKT30_1 AISCL8X8X3_4 AISCL8X8X3_4 AISCL8X8X3_4
CFKT30_2 AISCL8X8X3_4 AISCL8X8X3_4 AISCL8X8X3_4
CFKT30_3 AISCL8X8X3_4 AISCL8X8X3_4 AISCL8X8X3_4 |
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The completed cross frames are illustrated below. Please verify that you have the same model on your end by examining each view provided here. For more information on how to perform visual checks, refer to the quick tips. |
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To view the entire procedure explained on this page, please watch the recorded Video below. |