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How does ideCAD design single plate connection according to AISC 360-16?


  • Single plate connection limit states checks and geometry checks are done automatically according to AISC 360-16?


Symbols

Ab: Non-threaded bolt web characteristic cross-sectional area
Ag: Gross area
An: Net cross-section area
Ae: Effective net cross-sectional area
Avg: Gross area under shear stress
Anv: Net area under shear stress
Ant: Net area under tensile stress
Aw: Cross-section web area
Cv: Coefficient of reduction for shear buckling
d: Characteristic diameter of the stem of the bolt (the diameter of the non-threaded stem of the bolt)
dh: Bolt hole diameter
Fnt: Characteristic tensile strength
F'nt: Reduced characteristic tensile stress obtained by considering the shear force effect
Fnv: Characteristic shear stress strength
frv: The greatest shear stress in the characteristic web area of ​​the bolt
Fy: Structural steel characteristic yield strength
Fu: Structural steel characteristic tensile strength
Fyb: Bolt characteristic yield strength
Fub: Bolt characteristic tensile strength
nsp: Number of slip planes
s: Distance between bolt-hole centers
L: Connector distance
Le: The distance from the center of the bolt hole to the edge of the assembled element
t: Plate thickness
Rnt: Characteristic tensile strength
Rnv: Characteristic shear strength
Ubs: A coefficient considering the spread of tensile stresses


Connection Geometry

Geometry Checks

Bolt Spacing

smin ≥ 3d       

AISC 360-16 Table J3.3

 

 

s

79.5 mm

 

 

d

20 mm

s =79.5 mm > smin = 3*20=60 mm

Horizontal Edge Distance

Leh ≥ Le-min     

AISC 360-16 Table J3.4

 

 

Leh

40 mm

Leh ≥ 2d = 2 * 20 = 40 mm conformity check for application

Le-min

26 mm

Minimum distance check according to AISC 360-16 Table J3.4

Vertical Edge Distance

Lev ≥ Le-min     

AISC 360-16 Table J3.4

 

 

Lev

40 mm

Leh ≥ 2d = 2 * 20 = 40 mm conformity check for application

Le-min

26 mm

Minimum distance check according to AISC 360-16 Table J3.4

Weld Size

w ≥ wmin     

AISC 360-16 Table J2.4

 

 

w

12.73 mm

 

wmin

5 mm

AISC 360-16 Table J2.4

Erection Stability

L ≥ hb/2

 

 

L

239 mm

 

 

hb

248.6 mm

L=239 > 248.6/2=124.3 mm

Strength Checks

Bolt Shear at Beam

  • The calculation is made using the Elastic method, one of the methods selected in the steel analysis settings tab. For the details of this check, AISC Manual 14th 7-8 is used as a reference.

  • In this check, the operation is performed on half of the symmetry axis, and it is calculated to form a force pair with the required force.

Ab

Fn=Fnv

 

Rn

 

Rn / Ω

 

Required

Available

Check

Result

34,318 kN

56,549 kN

0.607

Bolt Bearing on Beam

dh

20+2=22 mm

 

Lc,edge

 

Rn

AISC 360-16 J3-6a

Rn-edge

 

Lc,spacing

 

Rn-spacing

 

Rn

 

 

Rn / Ω

 

Required

Available

Check

Result

68,159 kN

185,487 kN

0.367

Bolt Bearing on Plate

dh

20+2=22 mm

 

Lc,edge

 

Rn

AISC 360-16 J3-6a

Rn-edge

 

Lc,spacing

 

Rn-spacing

 

Rn

 

R n / Ω

 

Required

Available

Check

Result

68,159 kN

284,75 kN

0.239

Plate Shear Yield

Ag

 

Fy

235.359 N/mm2

 

Rn

AISC 360-16 J4-3

Rn / Ω

 

Required

Available

Check

Result

68,159 kN

270 kN

0.252

Beam Shear Rupture

Anv

 

Fu

362.846 N/mm2

 

Rn

AISC 360-16 J4-4

Rn / Ω

 

Required

Available

Check

Result

68,159 kN

176.213 kN

0.387

Plate Shear Rupture

Anv

 

Fu

362.846 N/mm2

 

Rn

AISC 360-16 J4-4

Rn / Ω

 

Required

Available

Check

Result

68,159 kN

218.143 kN

0.312

Plate Block Shear Rupture

Ag

 

Anv

 

Ant

 

Fy

235.359 N/mm2

 

Fu

362.846 N/mm2

 

Ubs

1.0

 

 

 

Rn

AISC 360-16 J4-4

Rn / Ω

 

Required

Available

Check

Result

68,159 kN

229.569 kN

0.297

Plate Flexural Buckling

Fy

235.359 N/mm2

 

t

12 mm

 

a

60 mm

 

L

239 mm

 

λ

 

Required

Available

Check

≤0.70

0.17

Plate Flexural Yield

dp

239 mm

 

Fy

235.359 N/mm2

 

tp

12 mm

 

a

60 mm

 

Rn

 

Rn / Ω

 

Required

Available

Check

Result

68,159 kN

223.92 kN

0.304

Weld Strength at Support

w

12.73 mm

 

FE

480 N/mm2

 

l

239 mm

 

e

60 mm

 

Rn

 

Rn / Ω

 

Required

Available

Check

Result

68,159 kN

421.131 kN

0.162



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