EN 1993-1-6:2007/A1:2015
(Amendment)Eurocode 3 - Design of steel structures - Part 1-6: Strength and Stability of Shell Structures
Eurocode 3 - Design of steel structures - Part 1-6: Strength and Stability of Shell Structures
- New design method to address a serious omission in the standard, leading to a mismatch with EN 1993-1-1
- Removal of ambiguity concerning plastic resistances and definitions of key parameters
- Resolving uncertainties about the use of GMNIA analyses
- Remedial measures to address mismatch with the stated scope
Eurocode 3 - Bemessung und Konstruktion von Stahlbauten - Teil 1-6: Festigkeit und Stabilität von Schalen
Eurocode 3 - Calcul des structures en acier - Partie 1-6 : Résistance et stabilité des structures en coques
Evrokod 3: Projektiranje jeklenih konstrukcij - 1-6. del: Trdnost in stabilnost lupinastih konstrukcij
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Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2014
Evrokod 3: Projektiranje jeklenih konstrukcij - 1-6. del: Trdnost in stabilnost
lupinastih konstrukcij
Eurocode 3 - Design of steel structures - Part 1-6: Strength and Stability of Shell
Structures
Eurocode 3 - Bemessung und Konstruktion von Stahlbauten - Teil 1-6: Festigkeit und
Stabilität von Schalen
Eurocode 3 - Calcul des structures en acier - Partie 1-6 : Résistance et stabilité des
structures en coques
Ta slovenski standard je istoveten z: EN 1993-1-6:2007/FprA1
ICS:
91.010.30 7HKQLþQLYLGLNL Technical aspects
91.080.10 Kovinske konstrukcije Metal structures
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
FINAL DRAFT
EN 1993-1-6:2007
NORME EUROPÉENNE
EUROPÄISCHE NORM
FprA1
August 2014
ICS 91.010.30; 91.080.10
English Version
Eurocode 3 - Design of steel structures - Part 1-6: Strength and
Stability of Shell Structures
Eurocode 3 - Calcul des structures en acier - Partie 1-6 : Eurocode 3 - Bemessung und Konstruktion von Stahlbauten
Résistance et stabilité des structures en coques - Teil 1-6: Festigkeit und Stabilität von Schalen
This draft amendment is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee
CEN/TC 250.
This draft amendment A1, if approved, will modify the European Standard EN 1993-1-6:2007. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment was established by CEN in three official versions (English, French, German). A version in any other language made
by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has
the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1993-1-6:2007/FprA1:2014 E
worldwide for CEN national Members.
EN 1993-1-6:2007/FprA1:2014 (E)
Contents Page
Foreword .4
1 Modifications to the Foreword .5
2 Modification throughout the whole standard .5
3 Modification to 1.2, Normative references .5
4 Modifications to 1.3, Terms and definitions .5
5 Modifications to 1.4,Symbols .6
6 Modification to 2.2.5, Linear elastic bifurcation analysis (LBA) .7
7 Modification to 2.2.6, .7
8 Modification to 2.2.7, Materially nonlinear analysis (MNA) .7
9 Modification to 2.2.8, Geometrically and materially nonlinear analysis (GMNA) .7
10 Modification to 2.2.9, Geometrically nonlinear elastic analysis with imperfections
included (GNIA) .7
11 Modification to 2.2.10, Geometrically and materially nonlinear analysis with imperfections
included (GMNIA) .7
12 Modification to 3.3, Geometrical tolerances and geometrical imperfections .7
13 Modifications to 4.1.1, LS1: Plastic limit .7
14 Modification to 4.2.2.2,Primary stresses .8
15 Modification to 4.2.4, Design by global numerical analysis .8
16 Modification to 5.3, Types of analysis .8
17 Modification to Clause 6, Plastic limit state (LS1) .8
18 Modifications to 6.2.1, Design values of stresses .9
19 Modifications to 6.3, Design by global numerical MNA or GMNA analysis .9
20 Modification to 8.2, Special definitions and symbols . 10
21 Modifications to 8.5.2, Design resistance (buckling strength) . 10
22 Addition of a new Subclause 8.6, Design using reference resistances . 11
23 Modifications to 8.6.2 (new subclause number: 8.7.2), Design value of resistance . 13
24 Modifications to 8.7.2 (new subclause number: 8.8.2), Design value of resistance . 14
25 Modification to Annex B (normative), Additional expressions for plastic collapse
resistances . 14
26 Modification to C.3.3, Cylinder, pinned: uniform internal pressure with axial loading . 15
27 Modifications to D.1.2.2, Meridional buckling parameters . 15
28 Modification to D.1.3.2, Circumferential buckling parameters . 16
29 Modification to D.1.4.2, Shear buckling parameters . 16
30 Modifications to D.1.5.2, Pressurised meridional buckling parameters . 16
31 Modification to D.1.6, Combinations of meridional (axial) compression, circumferential
(hoop) compression and shear . 16
32 Modifications to D.4.2.2, Meridional compression . 16
33 Modifications to D.4.2.4, Uniform external pressure . 17
EN 1993-1-6:2007/FprA1:2014 (E)
34 Addition of a new Annex E (normative), Expressions for reference resistance design . 17
EN 1993-1-6:2007/FprA1:2014 (E)
Foreword
This document (EN 1993-1-6:2007/FprA1:2014) has been prepared by Technical Committee CEN/TC 250
“Structural Eurocodes”, the secretariat of which is held by BSI.
This document is currently submitted to the Unique Acceptance Procedure.
EN 1993-1-6:2007/FprA1:2014 (E)
1 Modifications to the Foreword
In the Foreword, in the section "National Annex for EN 1993-1-6", add the following entries into the list at the
appropriate places:
"
– 6.2.1(6);"
and
"
– 8.6.3(5);".
In the Foreword, in the section "National Annex for EN 1993-1-6", replace:
"
– 8.7.2 (7)
– 8.7.2 (16)
– 8.7.2 (18) (2 times)"
with:
"
– 8.8.2 (9)
– 8.8.2 (18)
– 8.8.2 (20) (2 times)".
2 Modification throughout the whole standard
Replace "r " with "R".
R
3 Modification to 1.2, Normative references
In the list of the parts of EN 1993, replace "Part 1.1:" with "Part 1.1:2005:".
4 Modifications to 1.3, Terms and definitions
Replace the whole Entry 1.3.2.1 with:
"1.3.2.1 plastic failure limit state
ultimate limit state where the structure develops zones of yielding in a pattern such that its ability to resist
increased loading is deemed to be exhausted".
Add a new Entry 1.3.5.3:
"1.3.5.3 semi-membrane theory analysis
analysis that predicts the behaviour of an unsymmetrically loaded or supported thin-walled cylindrical shell
structure by assuming that only membrane forces and circumferential bending moments satisfy equilibrium
with the external loads"
and renumber accordingly the former Entry 1.3.5.3 (as 1.3.5.4) and the following subclauses in 1.3.5.
Replace the former Subclause 1.3.5.6 (newly renumbered as 1.3.5.7) with:
EN 1993-1-6:2007/FprA1:2014 (E)
"1.3.5.7 materially nonlinear analysis (MNA)
analysis based on shell bending theory applied to the perfect structure, using the assumption of small
deflections, as in 1.3.5.3, but adopting an ideal elastic plastic material law (idealised perfectly plastic response
after yield)".
Replace the former Subclause 1.3.5.7 (newly renumbered as 1.3.5.8) with:
"1.3.5.8 geometrically and materially nonlinear analysis (GMNA)
analysis based on shell bending theory applied to the perfect structure, using the assumptions of nonlinear
large deflection theory for the displacements and a fully nonlinear elastic-plastic-hardening material law,
where appropriate, and in which a bifurcation eigenvalue check is included at each load level".
Replace the former Subclause 1.3.5.9 (newly renumbered as 1.3.5.10) with:
"1.3.5.10 geometrically and materially nonlinear analysis with imperfections included
(GMNIA)
analysis with imperfections explicitly included, based on the principles of shell bending theory applied to the
imperfect structure (i.e. the geometry of the middle surface includes unintended deviations from the ideal
shape), including nonlinear large deflection theory for the displacements that accounts fully for any change in
geometry due to the actions on the shell and a fully nonlinear elastic-plastic-hardening material law, where
appropriate
Note 1 to entry: The imperfections may also include imperfections in boundary conditions and residual stresses. A
bifurcation eigenvalue check is included at each load level.".
5 Modifications to 1.4,Symbols
In Paragraph (12), replace the following line:
α
" elastic imperfection reduction factor in buckling strength assessment;"
with:
elastic buckling reduction factor in buckling strength assessment;
α
"
α
G
geometric reduction factor;
α
I
imperfection reduction factor;".
In Paragraph (12), replace the following line:
χ
" buckling reduction factor for elastic-plastic effects in buckling strengths assessment;"
with:
χ
" elastic-plastic buckling reduction factor for elastic-plastic effects in buckling strength
assessment;".
In Paragraph (12) , replace:
χ
ov
" overall buckling resistance reduction factor for complete shell;"
with:
" χ
ov
overall elastic-plastic buckling reduction factor for a complete shell;".
Delete the NOTE in Paragraph (12).
EN 1993-1-6:2007/FprA1:2014 (E)
6 Modification to 2.2.5, Linear elastic bifurcation analysis (LBA)
In Paragraph (1), replace "8.6 and 8.7" with "8.7 and 8.8".
7 Modification to 2.2.6,
In Paragraph (2), replace "8.6 and 8.7" with "8.7 and 8.8".
8 Modification to 2.2.7, Materially nonlinear analysis (MNA)
In Paragraph (1), replace "8.7" with "8.8".
9 Modification to 2.2.8, Geometrically and materially nonlinear analysis (GMNA)
Replace Paragraphs (1) and (2) with the following ones:
"(1) The result of a GMNA analysis, analogously to 2.2.7, gives the geometrically nonlinear plastic failure
load of the perfect structure and the plastic strain increment, that may be used for checking the limit states LS1
and LS2.
(2) Where compression or shear stresses are predominant in some part of the shell, a GMNA analysis gives
the elasto-plastic buckling load of the perfect structure. This perfect shell buckling load should always be
determined when the limit state LS3 is verified using GMNIA analysis, see 8.8.".
10 Modification to 2.2.9, Geometrically nonlinear elastic analysis with imperfections
included (GNIA)
In Paragraph (1), replace "8.7" with "8.8".
11 Modification to 2.2.10, Geometrically and materially nonlinear analysis with
imperfections included (GMNIA)
In Paragraph (1), replace "8.7" with "8.8".
12 Modification to 3.3, Geometrical tolerances and geometrical imperfections
In Paragraph (3), replace twice "8.7" with "8.8".
13 Modifications to 4.1.1, LS1: Plastic limit
Replace the title itself of Subclause 4.1.1 with "LS1: Plastic failure limit state".
Replace Paragraph (1) with:
"(1) The limit state of the plastic failure should be taken as the condition in which the capacity of the structure
to resist the actions on it is exhausted by plasticity in the material.
The plastic failure resistance should be distinguished from the plastic reference resistance which is derived as
the plastic collapse load obtained from a mec
...
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