NA to BS EN 1994-2-2005 UK National Annex to nEurocode 4 Design of ncomposite steel and nconcrete structures – nPart 2 General rules and rules for bridges《欧洲法规4的英国国家附录.pdf
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1、NA to BS EN 1994-2:2005UK National Annex to Eurocode 4: Design of composite steel and concrete structures Part 2: General rules and rules for bridgesICS 91.010.30; 91.080.10; 91.080.40; 93.040NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWNATIONAL ANNEXLicensed Copy: Wang Bin,
2、 ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 07:27, Uncontrolled Copy, (c) BSIPublishing and copyright informationThe BSI copyright notice displayed in this document indicates when the document was last issued. BSI 2007ISBN 978 0 580 54983 0The following BSI references relate to the work on this standa
3、rd:Committee reference B/525/4Draft for comment 06/30128176 DCPublication historyFirst published December 2007Amendments issued since publicationAmd. no. Date Text affectedNA to BS EN 1994-2:2005Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 07:27, Uncontrolled Copy, (c) BSI BSI 2
4、007 1NA to BS EN 1994-2:2005National Annex (informative) to BS EN 1994-2:2005, Eurocode 4: Design of composite steel and concrete structures Part 2: General rules and rules for bridgesIntroductionThis National Annex has been prepared by BSI Subcommittee B/525/4, Composite structures. In the UK it is
5、 to be used in conjunction with BS EN 1994-2:2005.NA.1 ScopeThis National Annex gives:a) the UK decisions for the Nationally Determined Parameters:1) in the general rules described in the following subclauses of BS EN 1994-2:2005, which come from BS EN 1994-1-1:2004:2) in the specific rules for brid
6、ges described in the following subclauses of BS EN 1994-2:2005:NOTE See foreword to EN 1994-2:2005.b) the UK decision on the status of BS EN 1994-2:2005, informative Annex C; andc) references to non-contradictory complementary information. NA.2 Nationally Determined ParametersNA.2.1 Reference to gui
7、dance for shear connectors other than welded headed studs BS EN 1994-2:2005, 1.1.3 (3)Guidance for shear connectors other than welded headed studs is given in PD 6696-2. 2.4.1.1 (1) 2.4.1.2 (5)P 6.6.3.1 (1) 1.1.3 (3) 6.6.1.1 (13) 2.4.1.2 (6)P 6.8.1 (3) 5.4.4 (1) 6.8.2 (1) 6.2.1.5 (9) 7.4.1 (4) 6.2.2
8、.5 (3) 7.4.1 (6) 6.3.1 (1) 8.4.3 (3)Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 07:27, Uncontrolled Copy, (c) BSINA to BS EN 1994-2:20052 BSI 2007NA.2.2 Partial factor for pre-stressing action, PBS EN 1994-2:2005, 2.4.1.1 (1)The partial factor for pre-stressing action, P, shoul
9、d be 1,0 for favourable and unfavourable effects, as recommended in BS EN 1994-2.NA.2.3 Partial factor for design shear resistance of a headed stud, V BS EN 1994-2:2005, 2.4.1.2 (5)PThe partial factor for design shear resistance of a headed stud, V, should be 1,25 as recommended in BS EN 1994-2.NA.2
10、.4 Partial factor for fatigue strength of studs in shear, Mf,s BS EN 1994-2:2005, 2.4.1.2 (6)PThe partial factor for fatigue strength of studs in shear, Mf,s, should be 1,0 as recommended in BS EN 1994-2.NA.2.5 Combination factor for global and local action effects BS EN 1994-2:2005, 5.4.4 (1)The co
11、mbination factor for global and local action effects for bridges except road bridges should be 1,0.The combination factor for global and local action effects for road bridges is stated to be a nationally determined parameter in BS EN 1993-2:2006, E.2. The value for this parameter should be as recomm
12、ended in the National Annex to BS EN 1993-2:20061). NA.2.6 Choice of the methods for calculating elastic resistance to bending BS EN 1994-2:2005, 6.2.1.5 (9)In calculating the elastic resistance to bending, the method given in BS EN 1994-2:2005, 6.2.1.5 (7) and (8) or the method given in BS EN 1993-
13、1-5:2006, Section 10 may be used.NA.2.7 Values of CRd,cand k1for concrete flanges in tension BS EN 1994-2:2005, 6.2.2.5 (3)The value of the coefficient CRd,cshould be 0,15/Cas recommended in BS EN 1994-2.The value of the coefficient k1should be 0,12 as recommended in BS EN 1994-2.NA.2.8 Reference to
14、 rules for transverse filler beams BS EN 1994-2:2005, 6.3.1 (1)Rules for transverse filler beams are given in PD 6696-2.1)In preparation.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 07:27, Uncontrolled Copy, (c) BSI BSI 2007 3NA to BS EN 1994-2:2005NA.2.9 Shear connection BS EN
15、1994-2:2005, 6.6.1.1 (13)No reference is provided to further guidance on considering the effects of bending moments at the steel-concrete interface, about an axis parallel to the axis of the steel beam, caused by deformations of the slab or the steel member, adjacent to cross frames and vertical web
16、 stiffeners, and for composite box girders.NA.2.10 Partial factor for design shear resistance of a headed stud, VBS EN 1994-2:2005, 6.6.3.1 (1)The partial factor for design shear resistance of a headed stud, V, should be 1,25 as recommended in BS EN 1994-2.NA.2.11 Reduction factor for the shear resi
17、stance of a stud connector, ks BS EN 1994-2:2005, 6.8.1 (3)The reduction factor for the shear resistance of a stud connector, ks, should be 0,75 as recommended in BS EN 1994-2. NA.2.12 Partial factor for fatigue strength of studs in shear, Mf,s BS EN 1994-2:2005, 6.8.2 (1)The partial factor for fati
18、gue strength of studs in shear, Mf,s, should be 1,0 as recommended in BS EN 1994-2:2005, 2.4.1.2 (6)P.NA.2.13 Design value of crack width, wk, and the combination of actions BS EN 1994-2:2005, 7.4.1 (4)The value of wk, which should be taken as wmax, and the combination of actions, are stated to be n
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