prEN 1998-4
(Main)Eurocode 8 - Design of structures for earthquake resistance - Part 4: Silos, tanks, pipelines, towers, masts and chimneys
Eurocode 8 - Design of structures for earthquake resistance - Part 4: Silos, tanks, pipelines, towers, masts and chimneys
EN 1998-4 is applicable to the seismic design of on-ground and elevated silos, on-ground, elevated and underground tanks, above-ground and buried pipeline systems, towers, masts and chimneys and ancillary elements attached to the aforementioned structures or in industrial facilities.
Eurocode 8 - Auslegung von Bauwerken gegen Erdbeben - Teil 4: Silos, Tankbauwerke und Rohrleitungen, Türme, Maste und Schornsteine
Eurocode 8 - Calcul des structures pour leur résistance au séisme - Part 4: Silos, réservoirs, canalisations, tours, mâts et cheminées
Evrokod 8: Projektiranje potresnoodpornih konstrukcij – 4. del: Silosi, rezervoarji, cevovodi, stolpi, jambori in dimniki
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2023
Evrokod 8: Projektiranje potresnoodpornih konstrukcij – 4. del: Silosi, rezervoarji,
cevovodi, stolpi, jambori in dimniki
Eurocode 8 - Design of structures for earthquake resistance - Part 4: Silos, tanks,
pipelines, towers, masts and chimneys
Eurocode 8 - Auslegung von Bauwerken gegen Erdbeben - Teil 4: Silos, Tankbauwerke
und Rohrleitungen, Türme, Maste und Schornsteine
Eurocode 8 - Calcul des structures pour leur résistance au séisme - Part 4: Silos,
réservoirs, canalisations, tours, mâts et cheminées
Ta slovenski standard je istoveten z: prEN 1998-4
ICS:
91.010.30 Tehnični vidiki Technical aspects
91.060.40 Dimniki, jaški, kanali Chimneys, shafts, ducts
91.120.25 Zaščita pred potresi in Seismic and vibration
vibracijami protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2023
ICS Will supersede EN 1998-4:2006, EN 1998-6:2005
English Version
Eurocode 8 - Design of structures for earthquake
resistance - Part 4: Silos, tanks, pipelines, towers, masts
and chimneys
Eurocode 8 - Calcul des structures pour leur résistance Eurocode 8 - Auslegung von Bauwerken gegen
au séisme - Part 4: Silos, réservoirs, tuyauteries, tours, Erdbeben - Teil 4: Silos, Tankbauwerke und
mâts et cheminées Rohrleitungen, Türme, Maste und Schornsteine
This 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, Türkiye 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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1998-4:2023 E
worldwide for CEN national Members.
Contents Page
European foreword . 7
0 Introduction . 8
0.1 Introduction to the Eurocodes . 8
0.2 Introduction to EN 1998 Eurocode 8 . 8
0.3 Introduction to prEN 1998-4 . 9
0.4 Verbal forms used in the Eurocodes . 9
0.5 National annex for prEN 1998-4 . 9
1 Scope . 11
1.1 Scope of prEN 1998-4 . 11
1.2 Assumptions . 11
2 Normative references . 11
3 Terms, definitions and symbols . 12
3.1 Terms and definitions . 12
3.2 Symbols and abbreviations . 13
3.2.1 Symbols . 13
3.2.2 Abbreviations . 22
3.3 S.I. Units . 22
4 Basis of design . 23
4.1 Performance requirements . 23
4.2 Consequence classes . 23
4.3 Limit states and associated seismic actions . 24
4.4 Modelling and methods of analysis . 25
4.5 Combination of the effects of the components of the seismic action . 25
4.6 Material requirements . 26
4.6.1 Design to DC1, DC2 and DC3 . 26
4.6.2 Safety verifications . 26
4.7 Verification to limit states . 26
4.7.1 General. 26
4.7.2 Verification of Significant Damage (SD) limit state . 27
4.7.3 Verification of Damage Limitation (DL) limit state . 27
4.7.4 Verification of Fully Operational (OP) limit state . 27
5 Rules for silos . 28
5.1 Scope . 28
5.2 Basis of design . 28
5.2.1 Design concept . 28
5.2.2 Safety verification . 28
5.3 Modelling and structural analysis . 28
5.3.1 Modelling . 28
5.3.2 Structural analysis . 29
5.3.3 Behaviour factors . 30
5.4 Seismic loads according to the force-based approach . 30
5.4.1 Total base shear, overturning moment and vertical reaction force at the silo bottom
................................................................................................................................................................... 30
5.4.2 Seismic pressures on silo walls and hoppers due to the horizontal seismic actions . 31
5.5 Verification to limit states . 33
5.5.1 General . 33
5.5.2 Verification of Significant Damage (SD) limit state . 33
5.5.3 Verification of Damage Limitation (DL) limit state . 35
5.5.4 Verification of Fully Operational (OP) limit state . 35
6 Rules for tanks . 35
6.1 Scope . 35
6.2 Basis of design . 36
6.2.1 Design concept . 36
6.2.2 Safety verification . 36
6.3 Modelling and structural analysis . 36
6.3.1 Modelling . 36
6.3.2 Structural analysis . 39
6.3.3 Behaviour factors . 39
6.4 Seismic loads according to the force-based approach for vertical cylindrical tanks . 39
6.4.1 Above ground anchored tanks . 39
6.4.2 Above ground unanchored tanks . 48
6.5 Seismic loads according to the force-based approach for vertical rectangular tanks
................................................................................................................................................................... 49
6.5.1 Above ground anchored tanks . 49
6.5.2 Above ground unanchored tanks . 54
6.6 Seismic loads according to the force-based approach for horizontal cylindrical tanks
................................................................................................................................................................... 54
6.6.1 Assumptions . 54
6.7 Seismic loads according to the force-based approach for elevated tanks . 56
6.8 Seismic loads according to the force-based approach for spherical tanks . 59
6.8.1 Spherical tanks . 59
6.9 Seismic loads on embedded tanks . 61
6.10 Superposition of horizontal and vertical seismic pressures . 61
6.10.1 Superposition of horizontal pressure components due to different modes of response
................................................................................................................................................................... 61
6.10.2 Superposition of horizontal pressure components due to different modes of response
................................................................................................................................................................... 61
6.10.3 Superposition of resulting pressures in horizontal and vertical directions . 62
6.11 Superposition of base shear, overturning moment and vertical reaction force . 62
6.11.1 Superposition of base shear .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.