SF044a-En-EU Flow Chart - Buckling Verification of Non-uniform Members in Portal Frames - Access Steel

Flow chart: Buckling verification of non-uniform members in portal frames

Flow chart: Buckling Buckling verification of non-uniform mem members bers in portal frames SF044a-EN-EU

Flow chart: chart: Buc kling verification of non-uniform members members in po rtal frames This fl owchart describes t he general method of EN 199 1993-1 3-1-1 -1 §6.3 §6.3.4 .4 for the verifi cation o f no n unifo rm members. It refers to NCCI NCCI docum ent SN03 SN032 2 for comp lementary inform ation. Note : This method should not be applied to members with plastic hinges.

Start

Structural configuration, member properties, actions

 The anal analy ysis shou should ld take ake int into o acco accoun untt: - Second order effects effects if relevant relevant - In-plane imperfect imperfections ions - In-plane flexural flexural buckling buckling effects effects

Calculate internal forces and moments

NEd, My,Ed

A

   t   n   e   m   e   e   r   g    A   e   c   n   e   c    i    L    l   e   e    t    S   s   s   e   c   c    A   e    h    t    f   o   s   n   o    i    t    i    d   n   o   c    d   n   a   s   m   r   e    t   e    h    t   o    t    t   c   e    j    b   u   s   s    i    t   n   e   m   u   c   o    d   s    i    h    t    f   o   e   s    U  .    d   e   v   r   e   s   e   r    3   s    t    1    h    0   g    2    i   r  ,   l    8    l    1  a     y   t   a    h    M   g  ,   i   y  r   y   a  p    d   r   o   u  c    t   s    i   a    l    S   a    i   n  r   o   e    t    d  a   e    t   m   a  s    i   e   r   h    C    T

SN032 § 2.1

SN032 § 2.2

Determine the minimum load amplifier for in plane resistance ult,k ignoring out-of-plane effects

ult,k

Determine the minimum load amplifier for out-of-plane buckling cr,op

cr,op

Determine global nondimensional slenderness using λ op

SN032 § 2.3

EN 1993-1-1 §6.3.4

λ op

α ult, k 

=

α cr,op

Determine Determine the reduction factor for out-of-plane buckling

 χ op α ult,k  γ M1

?

≥1

op

No

Revise the structureal configuration and/or member member properties

 Yes End

 To A

1

Flow chart: Buckling verification of non-uniform members in portal frames

Flow chart: Buckling verification of non-uniform members in portal frames SF044a-EN-EU

Quality Record RESOURCE Titl e

Flow chart: Buckling verification of non-uniform members in portal frames

Reference(s) ORIGINAL DOCUMENT

Created b y Technical cont ent checked by

Name

Company

Date

Alain Bureau

CTICM

27/02/2006

CTICM

27/02/2006

 Yvan Galéa

Editorial content checked by Technical content endorsed by th e following STEEL Partners: 1. UK

G W Owens

SCI

23/5/06

2. France

A Bureau

CTICM

23/5/06

3. Sweden

B Uppfeldt

SBI

23/5/06

4. Germany

C Müller

RWTH

23/5/06

Labein

23/5/06

SCI

21/8/06

5. Spain    t   n   e   m   e   e   r   g    A   e   c   n   e   c    i    L    l   e   e    t    S   s   s   e   c   c    A   e    h    t    f   o   s   n   o    i    t    i    d   n   o   c    d   n   a   s   m   r   e    t   e    h    t   o    t    t   c   e    j    b   u   s   s    i    t   n   e   m   u   c   o    d   s    i    h    t    f   o   e   s    U  .    d   e   v   r   e   s   e   r    3   s    t    1    h    0   g    2    i   r  ,   l    8    l    1  a     y   t   a    h    M   g  ,   i   y  r   y   a  p    d   r   o   u  c    t   s    i   a    l    S   a    i   n  r   o   e    t    d  a   e    t   m   a  s    i   e   r   h    C    T

Resource approved by Technical Coordinator 

 J Chica G W Owens

2