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Umut Nuhat Sevinc

Umut Nuhat Sevinc

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Follow the next steps to create K Top cross-frames.

1

Pick 2 Girders that the cross frame will be placed between.

2

Enter the Station of the cross frame.

3

Go to Sections tab.

4

Import AISCL8X8X3/4 and assign it to Top & Bottom & Diagonal Chord Sections.

5

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.

6

Go to Stiffener tab.

7

Edit the vertical stiffener thickness as 1 and vertical stiffener width as 7 in.

8
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titleQuick Tip

Do not forget to assign the related material for each case.

9

Go to Geometry tab.

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10

Edit the offset values for top chord, diagonals, and bottom chord.

11
Expand
titleQuick Tip

Skew Angle parameter rotates the the unskewed line which is perpendicular the PGL.

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titleQuick Tip
Info

Follow the next steps to use parameters at the FEA Section, and understand the parametric relationship.

Go to Parameters tab at the FEA section.

Enter Parameter Name and set Parameter Value.

Go back to Cross-frame X tab.

For the first row set Station parameter as ‘=Spacing*1’.

For the second row set Station parameter as ‘=Spacing*2’.

Select both of them.

Drag down to automatically increase the multiplier of the spacing.

Station parameter of the cross frames are now function of Spacing parameter.

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1

Go to Cross-frame K Top under Cross Frames on the tree view.

2

Copy Location, Sections, Gusset Plate, Stiffener, Geometry from model inputs and paste into OpenBrIM.

Tip

Completed cross frames is illustrated below.

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Cross-frame K Top

Location

Code Block
CFKT1	[G2,G1]	0	0
CFKT28	[G4,G3]	0	0
CFKT29	[G3,G2]	0	0
CFKT30_1	[G2,G1]	0	530
CFKT30_2	[G4,G3]	0	530
CFKT30_3	[G3,G2]	0	530

Sections

Code Block
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

Gusset Plate

Code Block
CFKT1	16	14	7	1	3	3	4	17.5	22.5	3	1	3	3	4	25	20	1	1	2	2.5	NO
CFKT28	16	14	7	5	5	3	4	17.5	22.5	3	2	3	3	4	25	20	1	1	2	2.5	NO
CFKT29	16	14	7	5	5	3	4	17.5	22.5	3	2	3	3	4	25	20	1	1	2	2.5	NO
CFKT30_1	16	14	7	5	5	3	4	17.5	22.5	3	2	3	3	4	25	20	1	1	2	2.5	NO
CFKT30_2	16	14	7	5	5	3	4	17.5	22.5	3	2	3	3	4	25	20	1	1	2	2.5	NO
CFKT30_3	16	14	7	5	5	3	4	17.5	22.5	3	2	3	3	4	25	20	1	1	2	2.5	NO

Stiffener

Code Block
CFKT1	0.75	7
CFKT28	1	16
CFKT29	1	16
CFKT30_1	1	16
CFKT30_2	1	16
CFKT30_3	1	16

Geometry

Code Block
CFKT1	10	7	12	8	11	8	6.5
CFKT28	10	7	12	8	11	8	6.5
CFKT29	10	7	12	8	11	8	6.5
CFKT30_1	10	7	12	8	11	8	6.5
CFKT30_2	10	7	12	8	11	8	6.5
CFKT30_3	10	7	12	8	11	8	6.5