The brace center connection is formed by bolting and welding the steel brace member to the column, beam or column-to-beam connection point by bolting and welding. Bolt control, weld control, plate control and connection application limits control are performed automatically according to the placement of the elements of the connection. Brace center connection design is made automatically according to the Design, Calculation and Construction Principles of Steel Structures (ÇYTHYEDY) or AISC 360-16 regulations and a connection report is created.

In the brace center connection calculation, horizontal and vertical bolt distances, butt plate weld thickness, continuity plate weld thickness and application limits are checked under geometry control. In strength control, cross bolt slip, plate bolt hole crushing, ski control, Whitmore section buckling, plate pressure leakage are checked.

Connection Geometry

Brace - Gusset Connection

Geometry Checks

Bolt Spacing

s min ≥ 3d       

ÇYTHYEDY 13.3.6

 

 

s

60 mm

 

 

d

20 mm

s =60 mm > smin = 3*20=60 mm

Horizontal Edge Distance

L eh ≥ L e- min     

ÇYTHYEDY 13.3.7

 

 

L eh

57 mm

 

L e- min

26 mm

Minimum distance check according to Table 13.9

Vertical Edge Distance

L ev ≥ L e- min     

ÇYTHYEDY 13.3.7

 

 

L ev

45 mm

Conformity check for L eh ≥ 2d = 2 * 20 = 40 mm application

L e- min

26 mm

Minimum distance check according to Table 13.9

Weld Size

a ≥ a min     

ÇYTHYEDY 13.3.7

 

 

a

4 mm

 

a min

3.5 mm

Table 13.4

Strength Checks

Bolt Shear at Brace

A b

Fn

Rn

ΦRn

Required

Available

Ratio

Control

169.593 kN

212.058 kN

0.800

Bolt Bearing on Plate

d h

20+2=22 mm

 

Lc,edge

 

Rn

ÇYTHYEDY 13.3.13

Equation 13.14a and13.14b

Rn-edge

 

Lc,spacing

 

Rn-spacing

 

Rn

 

ΦRn

Required

Available

Ratio

Control

169.593 kN

456.84 kN

0.371

Bolt Bearing on Gusset

d h

20+2=22 mm

 

Lc,edge

 

Rn

ÇYTHYEDY 13.3.13

Equation 13.14a and13.14b

Rn-edge

 

Lc,spacing

 

Rn-spacing

 

Rn

 

ΦRn

Required

Available

Ratio

Control

169.593 kN

304.56 kN

0.557

Weld Strength

Fe

490000 kN/m2

w

The weld thickness taken from the combination menu is 0.707 * w value. 4 / 0.707 = 5.658 mm

F u-plate

469.999  N/mm2

F u-brace

410 N/mm2

tplate

15 mm

t brace

15 mm

lw

150 mm

R nw

Rn-plate

Rn-brace

RnBM

Rn

ΦRn

 

Required

Available

Ratio

Control

169.593 kN

529.2 kN

0.320

Whitmore Section Compression Yield

K

0.65

 

L

0 mm

 

r

2.887 mm

 

KL / r

0

 

Fy

355 N/mm2

 

Ag

1292.82 mm2

 

Rn

ÇYTHYEDY 13.20

ΦRn

 

Required

Available

Ratio

Control

169.593 kN

413,056 kN

0.411

Gusset Compression Yield

K

0.65

 

L

65 mm

 

r

4.33 mm

 

KL / r

9.76

 

Fy

355 N/mm2

 

Ag

2009.999 mm2

 

Rn

ÇYTHYEDY 13.20

ΦRn

 

Required

Available

Ratio

Control

169.593 kN

642,195 kN

0.264