EN 1998-2-2005 en Eurocode 8 - Design of structures for earthquake resistance - Part 2 Bridges (Incorporating corrigendum February 2010 Incorporates Amendment A2 2011)《欧洲法规8 抗震结构设计.pdf

1、BRITISH STANDARD BS EN1998-2:2005Eurocode 8 Design ofstructures forearthquake resistance Part 2: BridgesICS 91.120.25; 93.040g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g

2、53g44g42g43g55g3g47g36g58+A2:2011 Incorporatingcorrigenda February 2010 and February 2012National forewordThis British Standard is the UK implementation of EN 1998-2:2005+A2:2011, incorporating corrigendum February 2010. It supersedes BS EN 1998-2:2005+A1:2009, which is withdrawn.The start and finis

3、h of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“.The start and finish of text introduced or altered by corrigendum is indicated in

4、 the text by tags. Text altered by CEN corrigendum February 2010 is indicated in the text by .The structural Eurocodes are divided into packages by grouping Eurocodes for each of the main materials: concrete, steel, composite concrete and steel, timber, masonry and aluminium.The UK participation in

5、its preparation was entrusted by Technical Committee B/525, Building and civil engineering structures, to Subcommittee B/525/8, Structures in seismic regions.A list of organizations represented on this subcommittee can be obtained on request to its secretary.Where a normative part of this EN allows

6、for a choice to be made at the national level, the range and possible choice will be given in the normative text, and a note will qualify it as a Nationally Determined Parameter (NDP). NDPs can be a specific value for a factor, a specific level or class, a particular method or a particular applicati

7、on rule if several are proposed in the EN.To enable EN 1998-2 to be used in the UK, the NDPs have been published in a National Annex, which has been made available by BSI.There are generally no requirements in the UK to consider seismic loading, and the whole of the UK may be considered an area of v

8、ery low seismicity in which the provisions of EN 1998-2 need not apply. However, certain types of structure, by reason of their function, location or form, may warrant an explicit consideration of seismic actions. Background information on the circumstances in which this might apply in the UK can be

9、 found in PD 6698:2009.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 1998-2:2005+A2:2011This British Standard waspublish

10、ed under the authorityof the Standards Policy andStrategy Committeeon 20 December 2005 The British Standards Institution 2012. Published by BSI Standards Limited 2012ISBN 978 0 580 78322 7Amendments/corrigenda issued since publicationDateComments31 August 2009 Implementation of CEN amendment A1:2009

11、31 May 2010 Implementation of CEN corrigendum February 201031 December 2011 Implementation of CEN amendment A2:201129 February 2012Correction to electronic version, page (110) did not display EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORMEN 1998-2ICS 91.120.25; 93.040 Supersedes ENV 1998-2:1994 E

12、nglish VersionEurocode 8 - Design of structures for earthquake resistance -Part 2: BridgesEurocode 8 - Calcul des structures pour leur rsistance aux sismes - Partie 2: PontsEurocode 8 - Auslegung von Bauwerken gegen Erdbeben -Teil 2: BrckenThis European Standard was approved by CEN on 7 July 2005.CE

13、N 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. Up-to-date lists and bibliographical references concerning such national standards may be obtained on app

14、lication to the Central Secretariat or to any CEN member.This European Standard exists 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 Central Secretariat has

15、the same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slova

16、kia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reserved worldwide

17、for CEN national Members.Ref. No. EN 1998-2:2005: E:2005+A2Incorporating corrigendum February 2010September 20112 TABLE OF CONTENTS FOREWORD 1 INTRODUCTION 12 1.1 SCOPE . 12 1.1.1 Scope of EN 1998-2 .12 1.1.2 Further parts of EN 1998 13 1.2 NORMATIVE REFERENCES . 13 1.2.1 Use.13 1.2.2 General refere

18、nce standards .13 1.2.3 Reference Codes and Standards13 1.2.4 Additional general and other reference standards for bridges.13 1.3 ASSUMPTIONS 14 1.4 DISTINCTION BETWEEN PRINCIPLES AND APPLICATION RULES 14 1.5 DEFINITIONS. 14 1.5.1 General 14 1.5.2 Terms common to all Eurocodes .14 1.5.3 Further term

19、s used in EN 1998-214 1.6 SYMBOLS 16 1.6.1 General 16 1.6.2 Further symbols used in Sections 2 and 3 of EN 1998-2 16 1.6.3 Further symbols used in Section 4 of EN 1998-217 1.6.4 Further symbols used in Section 5 of EN 1998-218 1.6.5 Further symbols used in Section 6 of EN 1998-219 1.6.6 Further symb

20、ols used in Section 7 and Annexes J, JJ and K of EN 1998-221 2 BASIC REQUIREMENTS AND COMPLIANCE CRITERIA.24 2.1 DESIGN SEISMIC ACTION 24 2.2 BASIC REQUIREMENTS . 25 2.2.1 General 25 2.2.2 No-collapse (ultimate limit state) 25 2.2.3 Minimisation of damage (serviceability limit state)26 2.3 COMPLIANC

21、E CRITERIA 26 2.3.1 General 26 2.3.2 Intended seismic behaviour .26 2.3.3 Resistance verifications.29 2.3.4 Capacity design .29 2.3.5 Provisions for ductility 29 2.3.6 Connections - Control of displacements - Detailing .32 2.3.7 Simplified criteria36 2.4 CONCEPTUAL DESIGN 36 3 SEISMIC ACTION 39 3.1

22、DEFINITION OF THE SEISMIC ACTION. 39 3.1.1 General 39 3.1.2 Application of the components of the motion 39 3.2 QUANTIFICATION OF THE COMPONENTS . 39 3.2.1 General 39 6 BS EN 1998-2:2005+A2:2011 EN 1998-2:2005+A2:2011 (E)3 3.2.2 Site dependent elastic response spectrum .40 3.2.3 Time-history represen

23、tation 40 3.2.4 Site dependent design spectrum for linear analysis 41 3.3 SPATIAL VARIABILITY OF THE SEISMIC ACTION 41 4 ANALYSIS45 4.1 MODELLING 45 4.1.1 Dynamic degrees of freedom.45 4.1.2 Masses .45 4.1.3 Damping of the structure and stiffness of members 46 4.1.4 Modelling of the soil46 4.1.5 Tor

24、sional effects 47 4.1.6 Behaviour factors for linear analysis48 4.1.7 Vertical component of the seismic action51 4.1.8 Regular and irregular seismic behaviour of ductile bridges 51 4.1.9 Non-linear analysis of irregular bridges.52 4.2 METHODS OF ANALYSIS. 52 4.2.1 Linear dynamic analysis - Response

25、spectrum method.52 4.2.2 Fundamental mode method .54 4.2.3 Alternative linear methods 58 4.2.4 Non-linear dynamic time-history analysis 58 4.2.5 Static non-linear analysis (pushover analysis)60 5 STRENGTH VERIFICATION.62 5.1 GENERAL 62 5.2 MATERIALS AND DESIGN STRENGTH. 62 5.2.1 Materials62 5.2.2 De

26、sign strength62 5.3 CAPACITY DESIGN 62 5.4 SECOND ORDER EFFECTS . 64 5.5 COMBINATION OF THE SEISMIC ACTION WITH OTHER ACTIONS . 65 5.6 RESISTANCE VERIFICATION OF CONCRETE SECTIONS. 66 5.6.1 Design resistance.66 5.6.2 Structures of limited ductile behaviour .66 5.6.3 Structures of ductile behaviour .

27、66 5.7 RESISTANCE VERIFICATION FOR STEEL AND COMPOSITE MEMBERS 74 5.7.1 Steel piers 74 5.7.2 Steel or composite deck .75 5.8 FOUNDATIONS 75 5.8.1 General 75 5.8.2 Design action effects76 5.8.3 Resistance verification.76 6 DETAILING .77 6.1 GENERAL 77 6.2 CONCRETE PIERS 77 6.2.1 Confinement.77 6.2.2

28、Buckling of longitudinal compression reinforcement .81 6.2.3 Other rules.82 6.2.4 Hollow piers 83 6.3 STEEL PIERS 83 BS EN 1998-2:2005+A2:2011 EN 1998-2:2005+A2:2011 (E)4 6.4 FOUNDATIONS 83 6.4.1 Spread foundation .83 6.4.2 Pile foundations.83 6.5 STRUCTURES OF LIMITED DUCTILE BEHAVIOUR . 84 6.5.1 V

29、erification of ductility of critical sections .84 6.5.2 Avoidance of brittle failure of specific non-ductile components.84 6.6 BEARINGS AND SEISMIC LINKS 85 6.6.1 General requirements85 6.6.2 Bearings.86 6.6.3 Seismic links, holding-down devices, shock transmission units87 6.6.4 Minimum overlap leng

30、ths89 6.7 CONCRETE ABUTMENTS AND RETAINING WALLS . 91 6.7.1 General requirements91 6.7.2 Abutments flexibly connected to the deck91 6.7.3 Abutments rigidly connected to the deck.91 6.7.4 Culverts with large overburden.93 6.7.5 Retaining walls 94 7 BRIDGES WITH SEISMIC ISOLATION 95 7.1 GENERAL 95 7.2

31、 DEFINITIONS. 95 7.3 BASIC REQUIREMENTS AND COMPLIANCE CRITERIA 96 7.4 SEISMIC ACTION . 97 7.4.1 Design spectra.97 7.4.2 Time-history representation 97 7.5 ANALYSIS PROCEDURES AND MODELLING 97 7.5.1 General 97 7.5.2 Design properties of the isolating system98 7.5.3 Conditions for application of anal

32、ysis methods 104 7.5.4 Fundamental mode spectrum analysis 104 7.5.5 Multi-mode Spectrum Analysis108 7.5.6 Time history analysis.109 7.5.7 Vertical component of seismic action109 7.6 VERIFICATIONS 109 7.6.1 Seismic design situation 109 7.6.2 Isolating system .109 7.6.3 Substructures and superstructur

33、e111 7.7 SPECIAL REQUIREMENTS FOR THE ISOLATING SYSTEM 112 7.7.1 Lateral restoring capability.112 7.7.2 Lateral restraint at the isolation interface 117 7.7.3 Inspection and Maintenance117 ANNEX A (INFORMATIVE) PROBABILITIES RELATED TO THE REF-ERENCE SEISMIC ACTION. GUIDANCE FOR THE SELECTION OF DES

34、IGN SEISMIC ACTION DURING THE CONSTRUCTION PHASE .11 ANNEX B (INFORMATIVE) RELATIONSHIP BETWEEN DISPLACEMENT DUCTILITY AND CURVATURE DUCTILITY FACTORS OF PLASTIC HINGES IN CONCRETE PIERS.11 ANNEX C (INFORMATIVE) ESTIMATION OF THE EFFECTIVE STIFFNESS OF REINFORCED CONCRETE DUCTILE MEMBERS120 BS EN 19

35、98-2:2005+A2:2011 EN 1998-2:2005+A2:2011 (E)895 ANNEX D (INFORMATIVE) SPATIAL VARIABILITY OF EARTHQUAKE GROUND MOTION: MODEL AND METHODS OF ANALYSIS12 ANNEX E (INFORMATIVE) PROBABLE MATERIAL PROPERTIES AND PLASTIC HINGE DEFORMATION CAPACITIES FOR NON-LINEAR ANALYSES 129 ANNEX F (INFORMATIVE) ADDED M

36、ASS OF ENTRAINED WATER FOR IMMERSED PIERS.135 ANNEX G (NORMATIVE) CALCULATION OF CAPACITY DESIGN EFFECTS 137 ANNEX H (INFORMATIVE) STATIC NON-LINEAR ANALYSIS (PUSHOVER) 139 ANNEX J (NORMATIVE) VARIATION OF DESIGN PROPERTIES OF SEISMIC ISOLATOR UNITS14 ANNEX JJ (INFORMATIVE) -FACTORS FOR COMMON ISOLA

37、TOR TYPES 144 ANNEX K (INFORMATIVE) TESTS FOR VALIDATION OF DESIGN PROPERTIES OF SEISMIC ISOLATOR UNITS.147 BS EN 1998-2:2005+A2:2011 EN 1998-2:2005+A2:2011 (E)226 Foreword This European Standard EN 1998-2, Eurocode 8: Design of structures for earthquake resistance: Bridges, has been prepared by Tec

38、hnical Committee CEN/TC250 Structural Eurocodes, the Secretariat of which is held by BSI. CEN/TC250 is responsible for all Structural Eurocodes. This European Standard shall be given the status of a National Standard, either by publication of an identical text or by endorsement, at the latest by May

39、 2006, and conflicting national standards shall be withdrawn at latest by March 2010. This document supersedes ENV 1998-2:1994. According to the CEN-CENELEC Internal Regulations, the National Standard Organisations of the following countries are bound to implement this European Standard: Austria, Be

40、lgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Background of the Eurocode programme In

41、 1975, the Commission of the European Community decided on an action programme in the field of construction, based on article 95 of the Treaty. The objective of the programme was the elimination of technical obstacles to trade and the harmonisation of technical specifications. Within this action pro

42、gramme, the Commission took the initiative to establish a set of harmonised technical rules for the design of construction works which, in a first stage, would serve as an alternative to the national rules in force in the Member States and, ultimately, would replace them. For fifteen years, the Comm

43、ission, with the help of a Steering Committee with Representatives of Member States, conducted the development of the Eurocodes programme, which led to the first generation of European codes in the 1980s. In 1989, the Commission and the Member States of the EU and EFTA decided, on the basis of an ag

44、reement1between the Commission and CEN, to transfer the preparation and the publication of the Eurocodes to CEN through a series of Mandates, in order to provide them with a future status of European Standard (EN). This links de facto the Eurocodes with the provisions of all the Councils Directives

45、and/or Commissions Decisions dealing with European standards (e.g. the Council Directive 89/106/EEC on construction products - CPD - and Council Directives 93/37/EEC, 92/50/EEC and 89/440/EEC on public works and services and equivalent EFTA Directives initiated in pursuit of setting up the internal

46、market). 1Agreement between the Commission of the European Communities and the European Committee for Standardisation (CEN) concerning the work on EUROCODES for the design of building and civil engineering works (BC/CEN/03/89). BS EN 1998-2:2005+A2:2011 EN 1998-2:2005+A2:2011 (E)7 The Structural Eur

47、ocode programme comprises the following standards generally consisting of a number of Parts: EN 1990 Eurocode: Basis of structural 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: Des

48、ign 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 structure

49、s Eurocode standards recognise the responsibility of regulatory authorities in each Member State and have safeguarded their right to determine values related to regulatory safety matters at national level where these continue to vary from State to State. Status and field of application of Eurocodes The Member States of the EU and EFTA recognise that Eurocodes serve as reference documents for the following purposes: as a means to prove compliance of building and civil engineering works with the essential requirements of Council Directive 89/106/EEC, particularly Essen