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Brace Corner Connection Design

The brace corner connection is formed by bolting and welding the steel brace member to the column, beam or column-to-beam connection. 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 corner 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 corner connection calculation, horizontal and vertical bolt distances, end 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 Plate 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

33.5 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

40 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

367,989 kN

424.115 kN

0.868

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

367,989 kN

906.912 kN

0.406

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

367,989 kN

566.82 kN

0.649

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

16 mm

t brace

10 mm

R nw

Rn-plate

Rn-brace

RnBM

Rn

ΦRn

 

Required

Available

Ratio

Control

367,989 kN

493.92 kN

0.745

Whitmore Section Buckling

K

0.65

 

L

153.5 mm

 

r

2.887 mm

 

KL / r

34.56

 

Fy

355 N/mm2

 

Ag

1881.409 mm2

 

Fe

 

 

 

 

 

Fcr

 

Rn

 

ΦRn

 

Required

Available

Ratio

Control

367,989 kN

549.42 kN

0.670

Gusset Axial Yield

K

0.65

 

L

60 mm

 

r

4.619 mm

 

KL / r

8.44

 

Fy

355 N/mm2

 

Ag

2991.995 mm2

 

Rn

ÇYTHYEDY 13.20

ΦRn

 

Required

Available

Ratio

Control

367,989 kN

955,942 kN

0.385

Gusset to Beam Connection

Geometry Checks

Weld Size

a ≥ a min     

ÇYTHYEDY 13.3.7

 

 

a

4 mm

 

a min

3.5 mm

Table 13.4

Strength Checks

Gusset Axial Yield

F y

355 N/mm2

 

Z

 

F a

 

N

260,207 kN

 

M

10.775 kNm

 

tg

10 mm

 

l g

347.279 mm

 

F b

 

Fn

 

Rn

 

ΦRn

 

Required

Available

Ratio

Control

110666.08 kN/m2

319500 kN/m2

0.346

Gusset Shear Yield

F y

355 N/mm2

 

V

260,207 kN

 

tg

10 mm

 

l g

347.279 mm

 

Fv

 

Rn

 

ΦRn

 

Required

Available

Ratio

Control

74927.3 kN/m2

213000 kN/m2

0.352

Weld Strength

Fpeak

 

Favg

 

R req

ÇYTHYEDY 13.3

tg

10 mm

 

in

5.658 mm

 

F e

480000 kN/m2

 

θ

55.9 °

 

Rn

 

ΦRn

 

Required

Available

Ratio

Control

1363.764 kN/m

2428.6 kN/m

0.562


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