List of abbreviations

t

Shear stress

m

Slip factor

Weld size parameter

d

Weld size parameter

b

Transformation parameter

r

Reduction factor

G

Weld size parameter

σ1

Normal stress in weld part

τ1

Shear stress in weld part

τ2

Shear stress in weld part

σD

Stress around point d in calculation of design shear resistance for bolts in column

σf,Ed

the longitudinal stress in the flange

σM

Normal stress generated by moment M

γM1

the partial safety factor

σN

Normal stress generated by normal force N

βw

Correlation factor in weld size calculation

A

Area of beam

Area of element

Parameter in design shear resistance for bolts in column

a

Lever arm   -   Bolt center   -  Weld size  

Position of bolt center with regard to underside of the plate (dir. x)

a

distance to the nearer end of the member

a1

length in block shear resistance

a2

length in block shear resistance

a3

length in block shear resistance

alfa,bw

Alfa value for beam web

alfa,el

Alfa value for element

Anet

Reduced area of the beam

Reduced area of the element

As

Tensile area for the bolt

Av

Shear area of the beam

Av.net

Reduced shear area of the beam element

B

Parameter in design shear resistance for bolts in column

b

Width

Position of bolt center with regard to underside of the plate (dir. y)

bd

Length in calculation of design shear resistance for bolts in column

bf

the column flange width

c

Maximum horizontal distance between bolts and bolt center

D

Shear force on the plate

d

Bolt diameter

Maximum horizontal distance between bolts and bolt center

d

the column web depth

d0

Hole diameter

do

Hole diameter

e

Diagonal diameter of bolt head

e1

Edge distance

Fb,bw,Rd

Bearing Resistance for beam web

Fb,el,Rd

Bearing Resistance for element

Fp,Cd

Design preloading force

Fs,Rd

Design slip resistance of preloaded high-strength bolt

Ft,Sd

Applied tensile force

fu

Ultimate tensile strength of the element

fub

Tensile strength of the bolt

Fv,Rd

Shear resistance per shear plane

fy

Yield strength of the element

g

weld size parameter

Gamma M0

Partial safety factor for resistance of cross-section to overall yielding

Gamma M1

Partial safety factor for resistance to buckling

Gamma Mb

Partial safety factor for resistance of bolts

Gamma Ms

Partial safety factor for slip resistance

Gamma Mw

Partial safety factor for resistance of welds

h

Height

h

the column height

hd

Height in calculation of design shear resistance for bolts in column

Ip

: Polar moment of inertia of the bolts with regard to the boltcenter

IpD

Polar moment of inertia of the bolts around point d in calculation of design shear resistance for bolts in column

K

Parameter in calculation of design shear resistance for bolts in column

ks

Value for slip resistance

l

length of the weld part

L

parameter in weld size

l1

length of the weld part

L1

Length for block shear resistance

l2

length of the weld part

L2

Length for block shear resistance

L3

Length for block shear resistance

leff

equivalent length in T-Stub model

Lv

Length for block shear resistance

Lveff

Length for block shear resistance

M

Present moment

m

factor in T-Stub model

Mpl,1,Rd

Design plastic moment resistance for MODE 1 in T-Stub model

Mpl,2,Rd

Design plastic moment resistance for MODE 2 in T-Stub model

My

Actual bending moment

N

Present normal force

n

Number of friction interfaces

Number of plates of number of bolt

NRd

Design tension/compression resistance

NSd

Internal tension/Compression force

p1

Bolt pitch

Pl

Gap between column’s flange and beam’s web

Q

 

Resulting forces acting on the extreme bolt of a plate:

Qhk

Horizontal force acting on the bolts in bolt-row k

Qhn

QhM

Horizontal force acting on the extreme bolt of a plate

Qvj

Vertical force acting on the bolts in bolt column j

QvM

Vertical force acting on the extreme bolt of a plate

Qvr 

Vertical force acting on the extreme bolt of a plate

R

Shear force

r

Radius

S

Width across flats, diameter of bolt head

ss

the plate height

t

Element thickness

t

Thickness

tf

Flange thickness

tf

the column flange thickness

tw

Web thickness

tw

the column web thickness

VRd

Design shear resistance

VSd

Internal shear force

Vz

Actual shear force

W

Elastic section modulus of beam

x1

Edge distance for bolts in connection element

x2

Edge distance for bolts in connection element

xj

Maximum horizontal distance between bolts and d point

y1

Edge distance for bolts in connection element

y2

Edge distance for bolts in connection element

zk

Maximum vertical distance between bolts and d point in design shear resistance of column