oSIST prEN 1990:2021
(Main)Eurocode - Basis of structural and geotechnical design
Eurocode - Basis of structural and geotechnical design
(1) This document establishes principles and requirements for the safety, serviceability, robustness and durability of structures, including geotechnical structures, appropriate to the consequences of failure.
(2) This document is intended to be used in conjunction with the other Eurocodes for the design of buildings and civil engineering works, including temporary structures.
(3) This document describes the basis for structural and geotechnical design and verification according to the limit state principle.
(4) Design and verification in this document are based primarily on the partial factor method.
NOTE 1 Alternative methods are given in the other Eurocodes for specific applications.
NOTE 2 The Annexes to this document also provide general guidance concerning the use of alternative methods.
(5) This document is applicable for:
— structural appraisal of existing construction;
— developing the design of repairs, improvements and alterations;
— assessing changes of use.
(6) This document is applicable for the design of structures where materials or actions outside the scope of EN 1991 to EN 1999 are involved.
NOTE In this case additional or amended provisions can be necessary.
Eurocode - Grundlagen der Tragwerksplanung
1.1 Anwendungsbereich von EN 1990
(1) Unter Einbeziehung der Folgen für ein Versagen legt dieses Dokument die Grundsätze und Anforderungen für die Sicherheit, Gebrauchstauglichkeit, Robustheit und Dauerhaftigkeit von Tragwerken, einschließlich geotechnischen Bauwerken fest.
(2) Dieses Dokument soll zusammen mit den anderen Eurocodes für den Entwurf und die Bemessung von Gebäuden und Ingenieurbauten, einschließlich temporären Tragwerken, angewendet werden.
(3) Dieses Dokument beschreibt die Grundlagen für die Planung von Tragwerken und geotechnischen Bauwerken sowie für die Bemessung nach dem Konzept der Bemessung nach Grenzzuständen.
(4) Tragwerksplanung und Bemessung basieren in diesem Dokument hauptsächlich auf dem Bemessungskonzept mit Teilsicherheitsbeiwerten.
ANMERKUNG 1 Alternative Verfahren sind in den anderen Eurocodes für bestimmte Anwendungsfälle angegeben.
ANMERKUNG 2 Die Anhänge dieses Dokuments enthalten zudem allgemeine Leitlinien für die Anwendung alternativer Verfahren.
(5) Dieses Dokument gilt auch für:
- die Beurteilung des Tragverhaltens bestehender Bauwerke;
- die Planung von Instandsetzungs-, Ertüchtigungs- und Umbaumaßnahmen;
- die Beurteilung von Nutzungsänderungen.
(6) Dieses Dokument ist auch für die Planung von Tragwerken mit Baustoffen oder Einwirkungen anwendbar, die nicht in den Anwendungsbereich von EN 1991 bis EN 1999 fallen.
ANMERKUNG In diesem Fall können zusätzliche oder abgeänderte Regelungen notwendig sein.
1.2 Annahmen
(1) Es wird angenommen, dass die Bemessung nach dem anerkannten Stand der Technik mit der für das Projekt angemessenen Befähigung und Sorgfalt durchgeführt wird.
(2) Es wird angenommen, dass die Bemessung des Tragwerks durch entsprechend qualifizierte und erfahrene Personen durchgeführt wird.
(3) Die in den Eurocodes enthaltenen Bemessungsregeln gehen davon aus, dass:
- die Bauausführung durch ausreichend befähigte und erfahrene Personen erfolgt;
- sachgerechte Kontrollen und Überwachungen während der Planung und der Bauausführung, sei es in Fabriken, Fertigungsanlagen oder auf der Baustelle, erfolgen;
- die Verwendung von Baustoffen und produkten entsprechend den Angaben in den Eurocodes, in den maßgebenden Produkt- und Ausführungsnormen, und den Projektspezifikationen erfolgt;
- das Tragwerk sachgemäß instand gehalten wird;
- das Tragwerk entsprechend den Planungsannahmen genutzt wird.
ANMERKUNG Leitlinien zu Managementmaßnahmen, mit denen die Annahmen für die Planung und Bauausführung erfüllt werden, sind in Anhang B angegeben.
Eurocode - Bases des calculs structuraux et géotechniques
1.1 Domaine d'application de l'EN 1990
(1) Le présent document établit les principes et les exigences en matière de sécurité, d'aptitude au service, de robustesse et de durabilité des structures, y compris les structures géotechniques, en fonction des conséquences d'une défaillance.
(2) Le présent document est destiné à être utilisé conjointement avec les autres Eurocodes pour la conception des bâtiments et des ouvrages du génie civil, y compris les structures provisoires.
(3) Le présent document décrit les bases de dimensionnement et de vérification des structures et des ouvrages géotechniques selon le principe de l'état limite.
(4) Dans le présent document, le calcul et la vérification sont principalement fondés sur la méthode des facteurs partiels.
NOTE 1 Des méthodes alternatives sont données dans les autres Eurocodes pour les applications spécifiques.
NOTE 2 Les annexes du présent document fournissent également des recommandations générales concernant l'utilisation des méthodes alternatives.
(5) Le présent document s'applique également :
- à l'évaluation structurale de constructions existantes ;
- à la projection des réparations, améliorations et altérations ;
- à l'étude des changements d'utilisation.
(6) Le présent document est applicable pour le calcul de structures non traitées par les EN 1991 à EN 1999, dans lesquelles interviennent des matériaux ou des actions non couverts par celles-ci.
NOTE Des dispositions additionnelles ou modifiées pourront se révéler nécessaires selon le cas.
1.2 Hypothèses
(1) Il est supposé qu'une compétence et un soin raisonnables et adaptés aux circonstances sont exercés lors du calcul, sur la base des connaissances et des bonnes pratiques généralement disponibles au moment de la conception de la structure.
(2) Il est pris pour hypothèse que le calcul des structures est effectué par un personnel dûment qualifié et expérimenté.
(3) Les règles de conception fournies par les Eurocodes supposent :
- que l'exécution sera réalisée par un personnel suffisant compétent et expérimenté ;
- qu'une maîtrise et une surveillance adéquates seront assurées pendant la conception et l'exécution des travaux, dans les usines, les entreprises ou sur le site ;
- que les matériaux et produits de construction seront utilisés conformément aux Eurocodes, aux normes de produits et d'exécution applicables et aux spécifications du projet ;
- que la structure bénéficiera de la maintenance adéquate ;
- que l'utilisation de la structure sera conforme aux hypothèses admises dans le projet.
NOTE L'Annexe B fournit des recommandations relatives aux mesures de gestion en vue de satisfaire les hypothèses de conception et d'exécution.
Evrocode - Osnove projektiranja
General Information
RELATIONS
Standards Content (sample)
SLOVENSKI STANDARD
oSIST prEN 1990:2020
01-november-2020
Evrocode - Osnove projektiranja
Eurocode - Basis of structural and geotechnical design
Eurocode - Grundlagen der Tragwerksplanung
Eurocode - Bases des calculs structuraux et géotechniques
Ta slovenski standard je istoveten z: prEN 1990
ICS:
91.010.30 Tehnični vidiki Technical aspects
oSIST prEN 1990:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 1990:2020
DRAFT
EUROPEAN STANDARD
prEN 1990
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2020
ICS 91.010.30 Will supersede EN 1990:2002
English Version
Eurocode - Basis of structural and geotechnical design
Eurocode - Bases des calculs structuraux et Eurocode - Grundlagen der Tragwerksplanung
géotechniquesThis draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 250.If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1990:2020 E
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oSIST prEN 1990:2020
prEN 1990:2020 (E)
Contents Page
European foreword ...................................................................................................................................................... 5
Introduction .................................................................................................................................................................... 6
1 Scope ................................................................................................................................................................... 8
1.1 Scope of EN 1990 ............................................................................................................................................. 8
1.2 Assumptions ..................................................................................................................................................... 8
2 Normative references.................................................................................................................................... 9
3 Terms, definitions and symbols ................................................................................................................ 9
3.1 Terms and definitions ................................................................................................................................... 9
3.1.1 Common terms used in the Eurocodes .................................................................................................. 12
3.1.2 Terms relating to design ............................................................................................................................ 12
3.1.3 Terms relating to actions ........................................................................................................................... 16
3.1.4 Terms relating to material and product properties ........................................................................ 19
3.1.5 Terms relating to geometrical property .............................................................................................. 19
3.1.6 Terms relating to structural and geotechnical analysis ................................................................. 20
3.2 Symbols and abbreviations ....................................................................................................................... 21
3.2.1 Latin upper-case letters ............................................................................................................................. 21
3.2.2 Latin lower-case letters .............................................................................................................................. 23
3.2.3 Greek upper-case letters ............................................................................................................................ 24
3.2.4 Greek lower-case letters ............................................................................................................................ 25
4 General rules .................................................................................................................................................. 27
4.1 Basic requirements ...................................................................................................................................... 27
4.2 Structural reliability .................................................................................................................................... 27
4.3 Consequences of failure ............................................................................................................................. 28
4.4 Robustness ...................................................................................................................................................... 29
4.5 Design service life ......................................................................................................................................... 29
4.6 Durability ......................................................................................................................................................... 29
4.7 Sustainability ................................................................................................................................................. 30
4.8 Quality management ................................................................................................................................... 30
5 Principles of limit state design ................................................................................................................ 30
5.1 General ............................................................................................................................................................. 30
5.2 Design situations ........................................................................................................................................... 31
5.3 Ultimate limit states (ULS) ........................................................................................................................ 31
5.4 Serviceability limit states (SLS) ............................................................................................................... 32
5.5 Structural models and load models ....................................................................................................... 33
6 Basic variables ............................................................................................................................................... 33
6.1 Actions and environmental influences ................................................................................................. 33
6.1.1 Classification of actions .............................................................................................................................. 33
6.1.2 Representative values of actions ............................................................................................................ 34
6.1.3 Specific types of action ................................................................................................................................ 36
6.1.4 Environmental influences ......................................................................................................................... 38
6.2 Material and product properties ............................................................................................................ 38
6.3 Geometrical properties .............................................................................................................................. 38
7 Structural analysis and design assisted by testing ........................................................................... 39
7.1 Structural modelling .................................................................................................................................... 39
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7.1.1 General ............................................................................................................................................................. 39
7.1.2 Static actions................................................................................................................................................... 39
7.1.3 Dynamic actions ............................................................................................................................................ 39
7.1.4 Actions inducing fatigue ............................................................................................................................. 40
7.1.5 Fire design ....................................................................................................................................................... 40
7.2 Analysis ............................................................................................................................................................ 41
7.2.1 Linear Analysis .............................................................................................................................................. 41
7.2.2 Non-linear analysis ...................................................................................................................................... 41
7.3 Design assisted by testing .......................................................................................................................... 41
8 Verification by the partial factor method ............................................................................................ 42
8.1 General ............................................................................................................................................................. 42
8.2 Limitations ...................................................................................................................................................... 42
8.3 Verification of ultimate limit states (ULS) ........................................................................................... 43
8.3.1 General ............................................................................................................................................................. 43
8.3.2 Design values of the effects of actions ................................................................................................... 43
8.3.3 Design values of actions ............................................................................................................................. 45
8.3.4 Combination of actions ............................................................................................................................... 48
8.3.5 Design values of resistance ....................................................................................................................... 51
8.3.6 Design values of material properties .................................................................................................... 53
8.3.7 Design values of geometrical properties ............................................................................................. 54
8.4 Verification of serviceability limit states (SLS).................................................................................. 54
8.4.1 General ............................................................................................................................................................. 54
8.4.2 Design values of the effects of actions ................................................................................................... 55
8.4.3 Combinations of actions ............................................................................................................................. 55
8.4.4 Design criteria ............................................................................................................................................... 56
8.4.5 Design values of geometrical properties ............................................................................................. 57
Annex A (normative) Application rules ............................................................................................................. 58
A.1 General application and application for buildings ........................................................................... 58
A.2 Application for bridges ............................................................................................................................... 73
A.3 Application for towers, masts and chimneys ................................................................................. 73
A.4 Application for silos and tanks ............................................................................................................ 73
A.5 Application for structures supporting cranes ............................................................................... 73
A.6 Application for marine coastal structures ...................................................................................... 73
Annex B (informative) Technical management measures for design and execution ....................... 74
B.1 Use of this informative Annex .................................................................................................................. 74
B.2 Scope and field of application .................................................................................................................. 74
B.3 Choice of technical management measures ........................................................................................ 74
B.4 Design quality ................................................................................................................................................ 74
B.5 Design checking ............................................................................................................................................. 75
B.6 Execution quality .......................................................................................................................................... 76
B.7 Inspection during execution ..................................................................................................................... 76
B.8 Technical management measures .......................................................................................................... 77
Annex C (informative) Reliability analysis and code calibration ............................................................. 78
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C.1 Use of this informative Annex .................................................................................................................. 78
C.2 Scope and field of application .................................................................................................................. 78
C.3 Basis for reliability analysis and partial factor design ................................................................... 78
C.4 Approach for calibration of design values ........................................................................................... 84
Annex D (informative) Design assisted by testing ......................................................................................... 91
D.1 Use of this informative Annex .................................................................................................................. 91
D.2 Scope and field of application .................................................................................................................. 91
D.3 Types of tests .................................................................................................................................................. 91
D.4 Planning of tests ............................................................................................................................................ 92
D.5 Derivation of characteristic or design values ..................................................................................... 95
D.6 General principles for statistical evaluations .................................................................................... 96
D.7 Statistical determination of a single property ................................................................................... 96
D.8 Statistical determination of resistance models ................................................................................. 99
Annex E (informative) Additional guidance for enhancing the robustness of buildings and
bridges ........................................................................................................................................................... 106
E.1 Use of this informative Annex ............................................................................................................... 106
E.2 Scope and field of application ............................................................................................................... 106
E.3 Design strategies ........................................................................................................................................ 107
E.4 Design methods .......................................................................................................................................... 107
Annex F (informative) Rain-flow and reservoir counting methods for the determination of
stress ranges due to high-cycle fatigue .............................................................................................. 110
F.1 Use of this informative Annex ............................................................................................................... 110
F.2 Scope and field of application ............................................................................................................... 110
F.3 Rain-flow counting method .................................................................................................................... 110
F.4 Reservoir counting method ................................................................................................................... 111
Annex G (normative) Basis of design for bearings ...................................................................................... 113
Annex H (informative) Verifications concerning vibration of footbridges due to pedestrian
traffic .............................................................................................................................................................. 114
Bibliography .............................................................................................................................................................. 115
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European foreword
This document (prEN 1990:2020) has been prepared by Technical Committee CEN/TC 250 “Structural
Eurocodes”, the secretariat of which is held by BSI. CEN/TC 250 is responsible for all Structural Eurocodes
and has been assigned responsibility for structural and geotechnical design matters by CEN.
This document is currently submitted to the CEN Enquiry.This document will supersede EN 1990:2002 and its amendments and corrigenda.
The first generation of EN Eurocodes was published between 2002 and 2007. This document forms part
of the second generation of the Eurocodes, which have been prepared under Mandate M/515 issued to
CEN by the European Commission and the European Free Trade Association.The Eurocodes have been drafted to be used in conjunction with relevant execution, material, product
and test standards, and to identify requirements for execution, materials, products and testing that are
relied upon by the Eurocodes.The Eurocodes recognize the responsibility of each Member State and have safeguarded their right to
determine values related to regulatory safety matters at national level through the use of National
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Introduction
0.1 Introduction to the Eurocodes
The Structural Eurocodes comprise the following standards generally consisting of a number of Parts:
• EN 1990 Eurocode Basis of structural and geotechnical design• EN 1991 Eurocode 1: Actions on structures
• EN 1992 Eurocode 2: Design of concrete structures
• EN 1993 Eurocode 3: Design of steel structures
• EN 1994 Eurocode 4: Design of composite steel and concrete structures
• EN 1995 Eurocode 5: Design of timber structures
• EN 1996 Eurocode 6: Design of masonry structures
• EN 1997 Eurocode 7: Geotechnical design
• EN 1998 Eurocode 8: Design of structures for earthquake resistance
• EN 1999 Eurocode 9: Design of aluminium structures
•
NOTE 1 The Structural Eurocodes are referred to as the Eurocodes in this document.
The Eurocodes are intended for use by designers, clients, manufacturers, constructors, relevant
authorities (in exercising their duties in accordance with national or international regulations),
educators, software developers, and committees drafting standards for related product, testing and
execution standards.NOTE 2 Some aspects of design are most appropriately specified by relevant authorities or, where not specified,
can be agreed on a project-specific basis between relevant parties such as designers and clients. The Eurocodes
identify such aspects making explicit reference to relevant authorities and relevant parties.
0.2 Introduction to EN 1990This document gives the principles and requirements for safety, serviceability, and durability of
structures that are common to all Eurocodes parts and are to be applied when using them.
This document is addressed to all parties involved in construction activities (e.g. public authorities,
clients, designers, contractors, producers, consultants, etc.).0.3 Verbal forms used in the Eurocodes
The verb “shall" expresses a requirement strictly to be followed and from which no deviation is permitted
in order to comply with the Eurocodes.The verb “should” expresses a highly recommended choice or course of action. Subject to national
regulation and/or any relevant contractual provisions, alternative approaches could be used/adopted
where technically justified.The verb “may" expresses a course of action permissible within the limits of the Eurocodes.
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The verb “can" expresses possibility and capability; it is used for statements of fact and clarification of
concepts.0.4 National Annex for EN 1990
National choices can be made where explicitly allowed by this standard within notes. Therefore, the
National Standard implementing EN 1990 can have a National Annex containing all Nationally
Determined Parameters to be used for the design of buildings and civil engineering works to be
constructed in the relevant country.When no national choice is made, the default value given in this standard is to be used.
When no national choice is made and no default value is given in this standard, the choice can be specified
by the relevant authority or, where not specified, agreed for a specific project by the relevant parties.
National choice is allowed in EN 1990 through the following clauses:— In main text through 4.2(3) Note 1, 4.3(1) Note 1 Table 4.1, 6.1.3.2(4) Notes 1 to 4, 6.1.3.2(6) Note,
7.1.5(7) Note, 8.3.3.1(5) Note, 8.3.4.2(2) Notes 1 and 2;— In A.1 through A.1.2(1) Note 1 Table A.1.1, A.1.3(1) Note Table A.1.2, A.1.5.1(1) Table A.1.3, A.1.5.1(1)
Notes 1 and 3, A.1.5.3(1) Note Table A.1.7, A.1.6(1) Note 1 Table A.1.8, Note 2 Table A.1.8 and Note 3
Table A.1.9, A.1.7.2.2(2) Note Table A.1.10, A.1.7.2.3(2) Note Table A.1.11, A.1.7.3(3) Note 1,
A.1.7.3(4) Note, A.1.7.4(2) Note Table A.1.16, A.1.7.4(4) Note Table A.1.13, Table A.1.14 and Table
A.1.15.National choice is allowed in the informative annexes through the following clauses:
— In Annex B through B.4(2) Note Table B.1, B.5(1) Note Table B.2, B.6(1) Note, B.6(2) Note 2, B.7(1)
Note 2 Table B.3, B.8(1) Note Table B.4;— In Annex C through C.3.4.2(2) Note 1 Table C.3;
— In Annex D through D.4.1(1) Note;
— In Annex E through E.4(4) Note 1.
National choice is allowed in EN 1990 on the use of the following informative annexes:
— Annex B (informative) Technical management measures for design and execution;— Annex C (informative) Reliability analysis and code calibration;
— Annex D (informative) Design assisted by testing;
— Annex E (informative) Additional guidance for enhancing the robustness of buildings and bridges;
— Annex F (informative) Rain-flow and reservoir counting methods for the determination of stress
ranges due to high cycle fatigue.The National Annex can contain, directly or by reference, non-contradictory complementary information
for ease of implementation, provided it does not alter any provisions of the Eurocodes.
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1 Scope
1.1 Scope of EN 1990
(1) This document establishes principles and requirements for the safety, serviceability, robustness and
durability of structures, including geotechnical structures, appropriate to the consequences of failure.
(2) This document is intended to be used in conjunction with the other Eurocodes for the design of
buildings and civil engineering works, including temporary structures.(3) This document describes the basis for structural and geotechnical design and verification according
to the limit state principle.(4) Design and verification in this document are based primarily on the partial factor method.
NOTE 1 Alternative methods are given in the other Eurocodes for specific applications.
NOTE 2 The Annexes to this document also provide general guidance concerning the use of alternative methods.
(5) This document is also applicable for:— structural appraisal of existing construction;
— developing the design of repairs, improvements and alterations;
— assessing changes of use.
(6) This document is applicable for the design of structures where materials or actions outside the scope
of EN 1991 to EN 1999 are involved.NOTE In this case, additional or amended provisions can be necessary.
1.2 Assumptions
(1) It is assumed that reasonable skill and care appropriate to the circumstances is exercised in the design,
based on the knowledge and good practice generally available at the time the structure is designed.
(2) It is assumed that the design of the structure is made by appropriately qualified and experienced
personnel.(3) The design rules provided in the Eurocodes assume that:
— execution will be carried out by personnel having appropriate skill and experience;
— adequate control and supervision will be provided during design and execution of the works, whether
in factories, plants, or on site;— construction materials and products will be used as specified in the Eurocodes, in the relevant
product and execution standards, and project specifications;— the structure will be adequately maintained;
— the structure will be used in accordance with the design assumptions.
NOTE Guidance on management measures to satisfy the assumptions for design and execution is given in
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2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies
...
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