National Annex to CYS EN 1990 Eurocode: Basis of Design. Part 2: Application to Bridges. NA to CYS EN 1990:2002 (part 2) CYPRUS NATIONAL ANNEX
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1 CYPRUS NATIONAL ANNEX NA to CYS EN 199:22 (part 2) National Annex to CYS EN 199 Eurocode: Basis of Design Part 2: Application to Bridges Prepared by Eurocodes Committee, Scientific and Technical Chamber of Cyprus under a Ministry of Interior's Programme
2 NATIONAL ANNEX TO CYS EN 199-Eurocode: BASIS OF DESIGN PART 2: APPLICATION TO BRIDGES This National Annex has been approved by the Board of Governors of the Cyprus Organisation for Standardisation on 22/1/21.
3 INTRODUCTION This N ational A nnex h as be en pr epared b y t he E urocodes Committee of the T echnical Chamber of Cyprus which was commissioned by the Ministry of Interior of the Republic of Cyprus NA 1 SCOPE This National Annex is to be used together with CYS EN 199:22 This National Annex gives: (a) Nationally determined parameters for the following clauses of CYS EN 199:22 Annex A2 where National choice is allowed (see Section NA 2) General clauses Clause Item A2.1 (1) NOTE 3 Use of Table 2.1 : Design working life A2.2.1(2) NOTE 1 Combinations involving actions which are outside the scope of EN 1991 A2.2.6(1) NOTE 1 Values of ψ factors A2.3.1(1) Alteration of design values of actions for ultimate limit states A2.3.1(5) Choice concerning the use of Approach 1, 2 or 3 A2.3.1(7) Definition of forces due to ice pressure A2.3.1(8) Values of γ P factors f or prestressing actions where not specified in the relevant design Eurocodes A2.3.1 Table A2.4(A) Values of γ factors NOTES 1 and 2 A2.3.1 Table A2.4(B) - NOTE 1 : choice between 6.1 and 6.1a/b - NOTE 2 : Values of γ and ξ factors - NOTE 4 : Values of γ Sd A2.3.1 Table A2.4(C) A2.3.2(1) A2.3.2 Table A2.5 NOTE A2.4.1(1) NOTE 1 (Table A2.6) NOTE 2 A2.4.1(2) Values of γ factors Design v alues i n Table A2.5 f or a ccidental d esigns s ituations, de sign values of accompanying variable actions and seismic design situations Design values of actions Alternative γ values for traffic actions for the serviceability limit state Infrequent combination of actions Serviceability requirements and criteria for the calculation of deformations Clauses specific for road bridges Clause A2.2.2 (1) A2.2.2(3) A2.2.2(4) A2.2.2(6) A2.2.6(1) NOTE 2 Item Reference to the infrequent combination of actions Combination rules for special vehicles Combination rules for snow loads and traffic loads Combination rules for wind and thermal actions Values of ψ 1,infq factors Clauses specific for footbridges Eurocodes Committee Page 2 of 12 2 April 21
4 Clause A2.2.3(2) A2.2.3(3) A2.2.3(4) A (1) Item Combination rules for wind and thermal actions Combination rules for snow loads and traffic loads Combination rules for footbridges protected from bad weather Comfort criteria for footbridges Clauses specific for railway bridges Clause A2.2.4(1) A2.2.4(4) A (1) NOTE 3 A (4)P A Table A2.7 NOTE A (3)P A (1) A (2) A (3) A (2) Table A2.8 NOTE 3 A (3) A (6) Item Combination rules for snow loading on railway bridges Maximum wind speed compatible with rail traffic Deformation and vibration requirements for temporary railway bridges Peak v alues o f de ck ac celeration for r ailway bridges and associated frequency range Limiting values of deck twist for railway bridges Limiting values of the total deck twist for railway bridges Vertical deformation of ballasted and non ballasted railway bridges Limitations on the rotations of non-ballasted bridge deck ends for railway bridges Additional limits of angular rotations at the end of decks Values of α i and r i factors Minimum lateral frequency for railway bridges Requirements for passenger comfort for temporary bridges (b) Decisions on the use of Informative Annexes (see Section NA 3) (c) References t o non-contradictory c omplementary i nformation t o a ssist t he us er t o a pply CYS EN 199 Annex A2 (see Section NA 4). NA 2 NATIONALLY DETERMINED PARAMETERS General clauses NA 2.1 Clause A2.1 (1) NOTE 3 : Use of Table 2.1 : Design working life Table 2.1 (CYS) shall be used, so the design working life for bridges is 1 years. NA 2.2 Clause A2.2.1(2) NOTE 1 : Combinations involving actions which are outside the scope of EN 1991 Combinations involving actions that are outside the scope of CYS EN 1991 would be defined by the responsible authorities for the individual project. NA 2.3 Clause A2.2.6(1) NOTE 1 : Values of ψ factors Values of ψ factors for the groups of traffic loads and the more common other actions are given in : Table A2.1 for road bridges, Table A2.2 for footbridges, and Table A2.3 for railway bridges, both for groups of loads and individual components of traffic actions Eurocodes Committee Page 3 of 12 2 April 21
5 Table A2.1 (CYS) Values of ψ factors for road bridges Action Symbol ψ ψ 1 ψ 2 gr1a TS,75,75 (LM1+pedestrian or UDL,4,4 cycle-track loads) 1) 2) Pedestrian+cycle-track loads,4,4 gr1b (Single axle),75 Traffic loads gr2 (Horizontal Forces) (see CYS EN , gr3 (Pedestrian loads) Table 4.4) gr4 (LM4 Crowd loading)),75 gr5 (LM3 Special vehicles)) Wind forces F Wk,6,2 - Persistent design situations,8 - - Execution * F W 1, - - Thermal actions Tk,6 3),6,5 Snow loads Q Sn,k (during execution),8 - - Construction loads Qc 1, - 1, 1) The recommended values of ψ, ψ 1, ψ 2 for gr1a and gr1b are given for roads with traffic corresponding to adjusting factors α Qi, α qi, α qr and β Q equal to 1. Those relating to UDL correspond to the most common traffic scenarios, in which an accumulation of lorries can occur, but not frequently. Other values may be envisaged for other classes of routes, or of expected traffic, related to the choice of the corresponding α factors. For example, a value of ψ 2 other than zero may be envisaged for the UDL system of LM1 only, for bridges supporting a severe continuous traffic. See also CYS EN ) T he c ombination v alue o f t he p edestrian an d cy cle-track l oad, m entioned i n T able 4. 4a of CYS E N , i s a "reduced" value. ψ and ψ 1 factors are applicable to this value. 3) The recommended ψ value for thermal actions may in most cases be reduced to for ultimate limit states EQU, STR and GEO. See also the design Eurocodes. NOTE 2 The recommended values of ψ 1,infq shall be used :,8 for gr1a (LM1), gr1b (LM2), gr3 (pedestrian loads), gr4 (LM4, crowd loading) and T (thermal actions) ;,6 for F W in persistent design situations 1, in other cases (i.e. the characteristic value is substituted for the infrequent value) NOTE 3 T he characteristic values of wind actions and snow loads during execution are defined in CYS EN Where relevant, representative values of water forces (F wa ) may be defined for the individual project. Table A2.2 (CYS) Values of ψ factors for footbridges Action Symbol ψ ψ 1 ψ 2 gr1,4,4 Traffic loads Q fwk gr2 Wind forces F Wk,3,2 Thermal actions Tk (1),6,6,5 Snow loads Q Sn,k (during execution),8 - Construction loads Qc 1, - 1, 1) The recommended ψ value for thermal actions may in most cases be reduced to for ultimate limit states EQU, STR and GEO. See also the design Eurocodes. NOTE 4 For footbridges, the infrequent value of variable actions is not relevant. Eurocodes Committee Page 4 of 12 2 April 21
6 Individual components of traffic 5) actions Table A2.3(CYS) Values of ψ factors for railway bridges LM 71 SW/ SW/2 Unloaded train HSLM Actions ψ ψ,8,8 1) 1, 1, 1, 1) 1 ψ2 1) Traction and braking Individual C omponents of Centrifugal forces Interaction forces due to deformation under vertical traffic loads traffic a ction in cluding d esign situations w here th e tr affic loads are considered as a single (multi d irectional) le ading action a nd not a s g roups of loads s hould us e t he s ame values as the ψ factors adopted for the associated vertical loads Nosing forces 1,,8 Non public footpaths loads Real trains Traffic load surcharge horizontal earth pressure Aerodynamic effects,5 gr11 (LM71 + SW/) Max. v ertical 1 w ith m ax. longitudinal gr12 (LM71 + SW/) Max. v ertical 2 w ith m ax. transverse gr13 (Braking/Traction) Max. longitudinal gr14 (Centrifugal/Nosing) Max. lateral,8,8 gr15 (Unloaded train) Lateral s tability with unloaded train gr16 (SW/2) SW/2 with max. longitudinal NA Main traffic actions gr17 (SW/2) SW/2 with max. transverse (Groups of loads) gr21 (LM71 + SW/) Max. v ertical 1 w ith m ax. longitudinal gr22 (LM71 + SW/) Max. v ertical 2 w ith max transverse gr23 (Braking/Traction) Max. longitudinal,8,7 gr24 (Centrifugal/Nosing) Max. lateral gr26 (SW/2) SW/2 with max. longitudinal gr27 (SW2) SW/2 with max. transverse gr31 (LM71 + SW/) Additional load cases,8,6 Other o perating Aerodynamic effects,8,5 actions General maintenance loading for non public footpaths,8,5 2) Wind forces FWk,75,5 F W ** 1, Thermal Tk,6,6,5 3) actions Snow loads Q Sn,k (during execution),8 - Construction loads Qc 1, - 1, 1),8 if 1 track only is loaded,7 if 2 tracks are simultaneously loaded,6 if 3 or more tracks are simultaneously loaded. 2) When w ind f orces act s imultaneously with t raffic actions, t he w ind f orce ψ F Wk should be t aken a s no greater than F W ** (see CYS EN ) See A2.2.4(4) 3) See CYS EN ) If deformation is being considered, ψ 2 should be taken equal to 1, for rail traffic actions. 5) Minimum coexistent favourable vertical load with centrifugal, traction or braking individual components of rail traffic actions is,5lm71 etc.,8,8,8,8,5,8 1) Eurocodes Committee Page 5 of 12 2 April 21
7 NOTE 5 F or s pecific de sign situations ( e.g. calculation o f b ridge ca mber for aes thetics an d d rainage co nsideration, calculation of clearance, etc.) the requirements for the combinations of actions to be used may be defined for the individual project. NOTE 6 For railway bridges, the infrequent value of variable actions is not relevant. NA 2.4 Clause A2.3.1(1) : Alteration of design values of actions for ultimate limit states Table A2.4(A) (CYS) shall be used. Table A2.4(A) (CYS) - Design values of actions (EQU) (Set A) Persistent and Transient Design Situation Permanent actions Prestress Leading variable action (*) Accompanying variable actions (*) Unfavourable Favourable Main (if any) Others (Eq. 6.1) γ Gj,sup Gkj,sup γgj,infgkj,inf γ P P γ Q,1 Q k,1 γ Q,i ψ,i Q k,i (*) Variable actions are those considered in Tables A2.1 to A2.3. NOTE 1 The following recomended γ values for the persistent and transient design situations shall be used. For persistent design situations, the recommended set of values for γ are : γ G,sup = 1,5 γ G,inf =,95 (1) γ Q = 1,35 for road and pedestrian traffic actions, where unfavourable ( where favourable) γ Q = 1,45 for rail traffic actions, where unfavourable ( where favourable) γ Q = 1,5 for all other variable actions for persistent design situations, where unfavourable ( where favourable). γ P = recommended values defined in the relevant design Eurocode. For transient design situations during which there is a risk of loss of static equilibrium, Q k,1 represents the dominant destabilising variable action and Q k,i represents the relevant accompanying destabilising variable actions. During execution, if the construction process is adequately controlled, the recommended set of values for γ are : γ G,sup = 1,5 γ G,inf =,95 (1) γ Q = 1,35 for construction loads where unfavourable ( where favourable) γ Q = 1,5 for all other variable actions, where unfavourable ( where favourable) (1) Where a counterweight is used, the variability of its characteristics may be taken into account, for example, by one or both of the following recommended rules : applying a partial factor γ G, inf =,8 where the self-weight is not well defined (e.g. containers) ; by considering a variation of its project-defined location, with a value to be specified proportionately to the dimensions of the bridge, where the magnitude of the counterweight is well defined. For steel bridges during launching, the variation of the counterweight location is often taken equal to ± 1 m. NOTE 2 F or the verification of uplift of bearings of continuous bridges or in cases where the verification of static equilibrium also i nvolves t he resistance o f s tructural e lements ( for e xample where l oss o f static e quilibrium i s prevented b y s tabilising systems o r d evices e.g. anchors, s tays or a uxiliary columns), as an al ternative t o t wo s eparate verifications b ased o n T ables A2.4(A) and A2.4(B), a combined verification, based on Table A2.4(A), may be adopted with the following set of recommended values, which shall be used. γ G,sup = 1,35 γ G,inf = 1,25 γ Q = 1,35 for road and pedestrian traffic actions, where unfavourable ( where favourable) γ Q = 1,45 for rail traffic actions, where unfavourable ( where favourable) γ Q = 1,5 for all other variable actions for persistent design situations, where unfavourable ( where favourable) γ Q = 1,35 for all other variable actions, where unfavourable ( where favourable) provided that applying γ G,inf = 1, both to the favourable part and to the unfavourable part of permanent actions does not give a more unfavourable effect. Eurocodes Committee Page 6 of 12 2 April 21
8 Table A2.4(B) (CYS) shall be used Persistent and Transient Design Situation Table A2.4(B) (CYS) - Design values of actions (STR/GEO) (Set B) Permanent actions Prestress Leading variable action (*) Unfavourable Favourable Main (if any) (Eq. 6.1a) γ Gj,sup G γ kj,sup Gj,infGkj,inf γp kj,sup Gj,infGkj,inf γpp γq,1q (Eq. 6.1b) ξγ Gj,sup G γ (*) Variable actions are those considered in Tables A2.1 to A2.3. NOTE 1 Equations 6.1a and 6.1b shall be used. Accompanying variable actions (*) Others P γ Q,1 ψ,1 Q γ k,1 Q,iψ,i Q k,i k,1 γ Q,i ψ,i Q k,i NOTE 2 Th e recommended γ and ξ values shall b e u sed. The following values for γ and ξ are recommended when using expressions 6.1, or 6.1a and 6.1b : γ G,sup = 1,35 1) γ G,inf = 1, γ Q = 1,35 when Q represents unfavourable actions due to road or pedestrian traffic ( when favourable) γ Q = 1,45 when Q represents unfavourable actions due to rail traffic, to groups of loads 11 t o 31 (except 16, 17, 26 3) and 27 3) ), load models LM71, SW/ and HSLM and real trains, when considered as individual leading traffic actions ( when favourable) γ Q = 1, 2 w hen Q represents unf avourable a ctions due t o r ail t raffic, t o g roups of l oads 16 a nd 17 a nd S W/2 ( w hen favourable) γ Q = 1,5 for other traffic actions and other variable actions 2) ξ =,925 γ Gset = 1,2 in case of linear elastic analysis, and 1,35 in case of non linear analysis, for design situations where actions due to uneven settlements may have unfavourable effects. For design situations where actions due to uneven settlements may have favourable effects, these actions are not to be taken into account. See also CYS EN 1991 to CYS EN 1999 for γ values to be used for imposed deformations. γ P = recommended values defined in the relevant design Eurocode. 1 )This value covers : self-weight of structural and non structural elements, ballast, soil, ground water and free water, removable loads, etc. 2 )This value covers : v ariable h orizontal earth p ressure from soil, ground water, free water an d b allast, traffic load surcharge earth pressure, traffic aerodynamic actions, wind and thermal actions, etc. 3) For rail traffic actions for groups of loads 26 a nd 27 γ Q = 1,2 may be applied to individual components of traffic actions associated with SW/2 and γ Q = 1,45 may be applied to individual components of traffic actions associated with load models LM71, SW/ and HSLM etc. NOTE 3 The characteristic values of all permanent actions from one source are multiplied by γ G,sup if the total resulting action effect is unfavourable and γ G,inf if the total resulting action effect is favourable. For example, all actions originating from the self weight of the structure may be considered as coming from one source ; this also applies if different materials are involved. See however A2.3.1(2). NOTE 4 For particular verifications, the values for γ G and γ Q may be subdivided into γ g and γ q and the model uncertainty factor γ Sd. A value of γ Sd in the range 1, - 1,15 shall be used in most common cases. NOTE 5 W here actions due to water are not covered by CYS EN 1997 (e.g. flowing water), the combinations of actions to be used may be specified for the individual project. Eurocodes Committee Page 7 of 12 2 April 21
9 Table A2.4(C) (CYS) shall be used Table A2.4(C) (CYS) - Design values of actions (STR/GEO) (Set C) Persistent and Transient Permanent actions Prestress Leading variable action Accompanying variable actions (*) Design Situation Unfavourable Favourable (*) Main (if any) Others (Eq. 6.1) γ Gj,sup Gkj,sup γgj,infgkj,inf γ P P γ Q,1 Q k,1 γ Q,i ψ,i Q k,i (*) Variable actions are those considered in Tables A2.1 to A2.3 NOTE The following recommended set of values for γ shall be used : γ G,sup = 1, γ G,inf = 1, γ Gset = 1, γ Q = 1,15 for road and pedestrian traffic actions where unfavourable ( where favourable) γ Q = 1,25 for rail traffic actions where unfavourable ( where favourable) γ Q = 1,3 for the variable part of horizontal earth pressure from soil, ground water, free water and ballast, for traffic load surcharge horizontal earth pressure, where unfavourable ( where favourable) γ Q = 1,3 for all other variable actions where unfavourable ( where favourable) γ Gset = 1, i n cas e o f l inear elastic o r n on l inear an alysis, for d esign s ituations w here a ctions due t o u neven settlements may have unfavourable effects. For design situations where actions due to uneven settlements may have favourable effects, these actions are not to be taken into account. γ P = recommended values defined in the relevant design Eurocode. NA 2.5 Clause A2.3.1(5) : Choice concerning the use of Approach 1, 2 or 3 Unless it is not specified otherwise to CYS EN N.A., approach 2 will be chosen. NA 2.6 Clause A2.3.1(7) : Definition of forces due to ice pressure They would be defined by the responsible authorities for the individual project. NA 2.7 Clause A2.3.1(8) : Values of γ P factors for prestressing actions where not specified in the relevant design Eurocodes They would be defined by the responsible authorities for the individual project. NA 2.8 Clause A2.3.2(1) : Design values in Table A2.5 for accidental designs situations, design v alues o f acco mpanying variable act ions an d seismic design situations Factor ψ 2 shall be used in Table A2.5 (CYS). Table A2.5 (CYS) shall be used. NA 2.9 Clause A2.3.2 Table A2.5 NOTE : Design values of actions Factor ψ 2 shall be used in Table A2.5 (CYS). Eurocodes Committee Page 8 of 12 2 April 21
10 Design Situation Accidental(*) (Eq. 6.11a/b) Seismic(***) (Eq. 6.12a/b) National Annex to CYS EN 199 Eurocode: Basis of Design Table A2.5 (CYS) - Design values of actions for use in accidental and seismic combinations of actions Permanent actions Prestress Accidental or seismic action Unfavourable Favourable Main G kj,sup G kj,inf P A d ψ 1,1 Q k,1 or ψ 2,1 Q k,1 G kj,sup G kj,inf P (*) CYS EN and its National Annex. (**) Variable actions are those considered in Tables A2.1 to A2.3. A Ed I Ek Accompanying variable actions (**) Others (if any) ψ 2,i Q k,i = γ A ψ 2,i Q k,i (***) CYS EN and its National Annex. Unless it is defined otherwise by the responsible authorities, at railway bridges, only one rail shall be loaded and load model SW/2 could be ignored. NOTE The recommended values are γ = 1, for all non seismic actions. NA 2.1 Clause A2.4.1(1) NOTE 1 (Table A2.6) NOTE 2 : Alternative γ values for traffic actions for the serviceability limit state. Infrequent combination of actions Table A2.6 (CYS) shall be used, The recommended γ factor = 1, shall be used. Table A2.6 (CYS) - Design values of actions for use in the combination of actions Combination Permanent actions G d Prestress Variable actions Q d Unfavourable Favourable Leading Others Characteristic G kj,sup G kj,inf P Q k,1 ψ,i Q k,i Frequent G kj,sup G kj,inf P ψ 1,1 Q k,1 ψ 2,i Q k,i Quasi-permanent G kj,sup G kj,inf P ψ 2,1 Q k,1 ψ 2,i Q k,i NA 2.11 Clause A2.4.1(2) : S erviceability r equirements an d cr iteria f or t he calculation of deformations Serviceability limit s tates dur ing execution s hould be defined i n a ccordance w ith CYS EN 199 to CYS EN 1999 National Annexes, unless it is specified otherwise by the responsible authorities for the specific project. Clauses specific for road bridges NA 2.12 Clause A2.2.2 (1) : Reference to the infrequent combination of actions The i nfrequent va lues of va riable a ctions would not be us ed for c ertain serviceability limit states of concrete bridges. Eurocodes Committee Page 9 of 12 2 April 21
11 NA 2.13 Clause A2.2.2(3) : Combination rules for special vehicles Paragraph 4.2.1(2) of the Eurocode CYS EN National Annex shall be used. NA 2.14 Clause A2.2.2(4) : Combination rules for snow loads and traffic loads This paragraph shall be used, unless it is defined otherwise by the responsible authorities. NA 2.15 Clause A2.2.2(6) : Combination rules for wind and thermal actions This paragraph shall be used, unless it is defined otherwise by the responsible authorities. NA 2.16 Clause A2.2.6(1) NOTE 2 : Values of ψ 1,infq factors Infrequent values and combination of actions should not be used. NA 2.17 Clause A2.2.6(1) NOTE 3 : Values of water forces They would be defined by the responsible authorities when it is necessary for the individual project. Clauses specific for footbridges NA 2.18 Clause A2.2.3(2) : Combination rules for wind and thermal actions This paragraph shall be used, unless it is defined otherwise by the responsible authorities. NA 2.19 Clause A2.2.3(3) : Combination rules for snow loads and traffic loads This paragraph shall be used, unless it is defined otherwise by the responsible authorities. NA 2.2 Clause A2.2.3(4) : Combination r ules f or f ootbridges pr otected fr om bad weather Combinations of a ctions s hould be s imilar t o t hose f or bui ldings, unless it i s defined otherwise by the responsible authorities for the individual project. The imposed loads should be replaced by the relevant group of loads and the ψ factors for traffic actions should be in accordance with Table A2.2 (CYS). NA 2.21 Clause A (1) : Comfort criteria for footbridges The f ollowing r ecommended m aximum va lues for accelerations ( m/s 2 ) f or a ny p art of t he deck shall be used: -,7 for vertical vibrations, -,2 for horizontal vibrations in normal use, -,4 for exceptional crowd conditions. Clauses specific for railway bridges NA 2.22 Clause A2.2.4(1) : Combination r ules f or s now l oading on r ailway bridges This paragraph shall be used, unless it is defined otherwise by the responsible authorities. Eurocodes Committee Page 1 of 12 2 April 21
12 NA 2.23 Clause A2.2.4(4) : Maximum wind speed compatible with rail traffic Paragraph 8.1 f rom E urocode CYS EN a nd i ts r elevant N ational A nnex s hall be used unless it is defined otherwise by the responsible authorities. The recommended maximum speed = 25 m/sec shall be used. NA 2.24 A (1) N OTE 3 : Deformation and v ibration r equirements f or temporary railway bridges Paragraph A (2) s hall be us ed, unl ess it is defined ot herwise by the responsible authorities. NA 2.25 Clause A (4)P : Peak v alues o f d eck acceleration f or r ailway bridges and associated frequency range The following recommended values shall be used: γ bt = 3,5 m/s 2 γ df = 5 m/s 2 NA 2.26 Clause A Table A2.7 NOTE: Limiting values of deck twist for railway bridges The following recommended values for the set of t shall be used: t 1 = 4,5 t 2 = 3, t 3 = 1,5 NA 2.27 Clause A (3)P : L imiting v alues o f t he t otal d eck t wist f or railway bridges The recommended value t T = 7,5 mm/3m shall be used. NA 2.28 Clause A (1) : V ertical d eformation o f b allasted a nd n on ballasted railway bridges Additional r equirements f or l imiting ve rtical de formation f or ba llasted a nd non ba llasted bridges would be defined by the responsible authorities for the specific project. NA 2.29 Clause A (2) : Limitations on t he r otations of no n-ballasted bridge deck ends for railway bridges Limitations on the rotations of ballasted bridge deck ends are impl icit in CYS EN , R equirements f or non ba llasted s tructures w ould be de fined by the responsible authorities for the specific project. NA 2.3 Clause A (3) : Additional limits of angular rotations at the end of decks The requirements for non ballasted structures would be defined by the responsible authorities for the specific project. NA 2.31 Clause A (2) Table A2.8 NOTE 3 : Values of α i and r i factors Table A2.8 (CYS) shall be used Eurocodes Committee Page 11 of 12 2 April 21
13 Table A2.8 (CYS) - Maximum angular variation and minimum radius of curvature Speed range V (km/h) Maximum angular variation (radian) Minimum radius of curvature (m) Single deck Multi-deck bridge V 12 α 1 R 1 r 4 12 < V 2 α 2 r 2 r 5 V > 2 α 3 r 3 r 6 NOTE 1 The radius of curvature may be determined using : 2 L R = (A2.7) 8δ h NOTE 2 T he transverse deformation includes the deformation of the bridge deck and the substructure (including piers, piles and foundations). NOTE 3 The values for the set of α i and r i may be defined in the National Annex. The recommended values are : α 1 =,35 ; α 2 =,2 ; α 3 =,15 ; r 1 = 17 ; r 2 = 6 ; r 3 = 14 ; r 4 = 35 ; r 5 = 95 ; r 6 = 175 NA 2.32 Clause A (3) : Minimum lateral frequency for railway bridges The recommended value f h =1,2 Hz. shall be used. NA 2.33 Clause A (6) : R equirements f or p assenger co mfort f or temporary bridges Paragraphs A and A shall be used, unless they are defined otherwise by the responsible authorities. NA 3 DECISION ON USE OF ANNEXES None NA 4 REFERENCES TO NON-CONTRADICTORY COMPLEMENTARY INFORMATION None Eurocodes Committee Page 12 of 12 2 April 21
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15 NA to CYS EN 199:22 (part 2) CYPRUS ORGANISATION FOR STANDARDISATION Limassol Avenue and Kosta Anaxagora 3, 2 nd & 3 rd Floor, 214 Nicosia, Cyprus P.O.BOX.16197, 286 Nicosia, Cyprus Tel: Fax: cystandards@cys.org.cy Website:
EN 1990:2002/A1:2005/AC
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