1、NA to BS EN 1991-1-6:2005UK National Annex to Eurocode 1: Actions on structures Part 1-6: General actions Actions during executionICS 91.010.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWNATIONAL ANNEXLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 30/07/2008 07:33,
2、Uncontrolled Copy, (c) BSIPublishing and copyright informationThe BSI copyright notice displayed in this document indicates when the document was last issued. BSI 2008ISBN 978 0 580 60815 5The following BSI references relate to the work on this standard:Committee reference B/525Draft for comment 07/
3、30163355/DCPublication historyFirst published May 2008 Amendments issued since publicationAmd. no. Date Text affectedNA to BS EN 1991-1-6:2005Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 30/07/2008 07:33, Uncontrolled Copy, (c) BSI BSI 2008 1NA to BS EN 1991-1-6:2005National Annex (informa
4、tive) toBS EN 1991-1-6:2005, Eurocode 1: Actions on structures Part 1-6: General actions Actions during execution IntroductionThis National Annex has been prepared by BSI Subcommittee B/525/1, Actions (loadings) and basis of design. It is to be used in conjunction with BS EN 1991-1-6:2005.NA.1 Scope
5、This National Annex gives:a) the UK decisions for the Nationally Determined Parameters described in the following subclauses of BS EN 1991-1-6:2005:1.1(3)2.2(4) Note 1*3.1(1)P3.1(5) Notes 1 and 23.1(7)3.1(8) Note 13.3(2)3.3(6)4.9(6) Note 24.10(1)P4.11.1(2) Table 4.1*4.11.2(1) Note 24.12(1)P Note 24.
6、12(2) 4.12(3)4.13(2)Annex A, A1.1(1) Note 2Annex A, A1.3(2) Annex A, A2.3(1) Note 1Annex A, A2.4(2)Annex A, A2.4(3)Annex A, A2.5(2)Annex A, A2.5(3) Note 1* Not 2 (4) as in BS EN 1991-1-6:2005* Not 4.11.1(1) Table 4.1 as in BS EN 1991-1-6:2005Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 30/
7、07/2008 07:33, Uncontrolled Copy, (c) BSINA to BS EN 1991-1-6:20052 BSI 2008b) the decisions on the status of BS EN 1991-1-6:2005 informative Annex B (see NA.3);c) references to non-contradictory complementary information (see NA.4). NA.2 Nationally determined parametersNA.2.1 Design rules for auxil
8、iary construction workssee BS EN 1991-1-6:2005, 1.1(3)Use the recommended design rules in BS EN 12810, BS EN 12811, BS EN 12812 and TG20:(05) 1, as appropriate and define for the individual project.NA.2.2 Positioning of construction loads classified as “free”see BS EN 1991-1-6:2005, 2.2(4) Note 1The
9、 limits of movement for construction loads classified as “free” should be defined for the individual project.NA.2.3 Design situations corresponding to wind actions during storm conditions see BS EN 1991-1-6:2005, 3.1(1)PUse the recommended design situations for wind actions during storm conditions a
10、nd the BCSA Publication No. 39/05 Guide to steel erection in windy conditions 2.NA.2.4 Return periods for the determination of the characteristic values of variable actions during execution see BS EN 1991-1-6:2005, 3.1(5) Note 1The values should be defined for the individual project, using the recom
11、mended values as a minimum. NA.2.5 Minimum wind speed during execution see BS EN 1991-1-6:2005, 3.1(5) Note 2The recommended value should be defined for the individual project.NA.2.6 Rules for the combination of snow loads and wind actions with construction loads see BS EN 1991-1-6:2005, 3.1(7)Rules
12、 for combination should be defined for the individual project.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 30/07/2008 07:33, Uncontrolled Copy, (c) BSI BSI 2008 3NA to BS EN 1991-1-6:2005NA.2.7 Rules concerning imperfections in the geometry of the structure see BS EN 1991-1-6:2005, 3.1(8)
13、Note 1The imperfections should be defined for the individual project.NA.2.8 Criteria associated with serviceability limit states during execution see BS EN 1991-1-6:2005, 3.3(2)The criteria associated with serviceability limit states should be defined for the individual project.NA.2.9 Serviceability
14、 requirements for auxiliary construction works see BS EN 1991-1-6:2005, 3.3(6)The recommended rules and values may be appropriate; however, they should be defined for the individual project. See also BS EN 12810, BS EN 12811, BS EN 12812, BS EN 12813 and related codes such as TG20:(05) 1. NA.2.10 Ac
15、tions due to ice, including floating ice see BS EN 1991-1-6:2005, 4.9(6) Note 2The loads and water levels should be defined for the individual project.NA.2.11 Actions due to atmospheric icing see BS EN 1991-1-6:2005, 4.10(1)PThe representative values of these actions should be defined for the indivi
16、dual project. Guidance may be found in BS EN 1993-1-3 and in ISO 12494.NA.2.12 Recommended characteristic values of construction loads Qcaand Qcbsee BS EN 1991-1-6:2005, 4.11.1(2) (Table 4.1)Qca The characteristic value qca,kof the uniformly distributed load may be defined for the individual project
17、 and a minimum value of 1.00 is recommended. Qcb The characteristic values may be defined for the individual project. The recommended minimum values should be used for bridges. For other applications use the recommended rules.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 30/07/2008 07:33, U
18、ncontrolled Copy, (c) BSINA to BS EN 1991-1-6:20054 BSI 2008NA.2.13 Construction loads during the casting of concrete see BS EN 1991-1-6:2005, 4.11.2(1) Note 2The following recommended minimum values should be used for:Qca: qca, k= 0.75 kN/m2as given in Table 4.2Qcc: qcc, k= 0.5 kN/m2given in Table
19、4.1.Alternative values for Qcaand Qccmay be determined for the individual project if a specific assessment is undertaken.Values for Qcfshould be assessed and determined for the individual project taking account of the information provided in Table 4.1 and 4.11.2.NA.2.14 Dynamic effects due to accide
20、ntal actions see BS EN 1991-1-6:2005, 4.12(1)P Note 2Values should be specified for the individual project. The recommended rules and values should be used for determination, although the given value of 2 may be appropriate, subject to assessment. Other specific requirements, such as for shipping, m
21、ay apply. See also BS EN 1991-1-7:2006 and its National Annex.NA.2.15 Dynamic effects due to falls of equipment see BS EN 1991-1-6:2005, 4.12(2)The values should be defined for the individual project. NA.2.16 Design values of human impact loads see BS EN 1991-1-6:2005, 4.12(3)The recommended values
22、should be used.NA.2.17 Seismic actions see BS EN 1991-1-6:2005, 4.13(2)The design values for ground acceleration and the importance factor may be defined for the individual project. See also BS EN 1998 for further information.NA.2.18 Representative values of the variable actions due to construction
23、loads see BS EN 1991-1-6:2005, Annex A, A1.1(1) Note 2The recommended values should be used, including those for transient and persistent accompanying actions.NA.2.19 Characteristic values of equivalent horizontal forces seeBS EN 1991-1-6:2005, Annex A, A1.3(2)The recommended value may be appropriat
24、e; however, values should be determined and defined for the individual project.1Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 30/07/2008 07:33, Uncontrolled Copy, (c) BSI BSI 2008 5NA to BS EN 1991-1-6:2005NA.2.20 Design values of vertical deflections for the incremental launching of bridge
25、s see BS EN 1991-1-6:2005, Annex A, A2.3(1) Note 1The recommended values may be appropriate; however, they should be determined and defined for the individual project.NA.2.21 Reduction of the characteristic value of snow loads see BS EN 1991-1-6:2005, Annex A, A2.4(2)The value should be defined for
26、the individual project and should be the recommended value, if appropriate.NA.2.22 Reduced values of characteristic snow loads for the verification of static equilibrium see BS EN 1991-1-6:2005, Annex A, A2.4(3)The recommended rules and values should be used.NA.2.23 Design values of horizontal frict
27、ion forces see BS EN 1991-1-6:2005, Annex A, A2.5(2)The recommended values may be appropriate; however, they should be determined and defined for the individual project.NA.2.24 Determination of friction coefficients minand maxsee BS EN 1991-1-6:2005, Annex A, A2.5(3) Note 1The recommended rules and
28、values for the friction coefficients, min and maxmay be appropriate; however, they should be determined and defined for the individual project.NA.3 Decisions on the status of the informative annexesNA.3.1 Actions on structures during alteration, reconstruction or demolitionBS EN 1991-1-6:2005, Annex
29、 BAnnex B may be used for buildings and most civil engineering works. Annex B may not be used for highway or railway structures unless its use is specified in the individual project.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 30/07/2008 07:33, Uncontrolled Copy, (c) BSINA to BS EN 1991-1-
30、6:20056 BSI 2008NA.4 References to non-contradictory complementary informationThe following is a list of references that contain non-contradictory complementary information for use with BS EN 1991-1-6:2005.BS 6187, Code of practice for demolition. BS 5975, Code of practice for falsework.BCSA Publica
31、tion No. 39/05, Guide to steel erection in windy conditions, British Constructional Steelwork Association, London 2005.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 30/07/2008 07:33, Uncontrolled Copy, (c) BSI BSI 2008 7NA to BS EN 1991-1-6:2005BibliographyStandards publicationsBS EN 1991-1
32、-7, Eurocode 1 Actions on structures Part 1-7: General actions Accidental actions BS EN 1993-1-3, Eurocode 3 Design of steel structures Part 1-3: General rules Supplementary rules for cold-formed members and sheetingBS EN 1998 (all parts), Eurocode 8 Design of structures for earthquake resistanceBS
33、EN 12810 (all parts), Facade scaffolds made of prefabricated componentsBS EN 12811 (all parts), Temporary works equipmentBS EN 12812, Falsework Performance requirements and general designBS EN 12813, Temporary works equipment Load bearing towers of prefabricated components Particular methods of desi
34、gnISO 12494, Atmospheric icing of structuresOther publications1 NASC TG 20 05, Technical Guidance on the use of BS EN 12811-1; Guide to Good Practice for Scaffolding with Tubes and Fittings. National Access and Scaffolding Confederation, London, 20052 BCSA Publication No. 39/05, Guide to steel erect
35、ion in windy conditions, British Constructional Steelwork Association, London, 2005Further readingC579, Retention of masonry facades best practice guide. CIRIA: London, 2003Health and Safety Executive, The Construction (Design and Management) Regulations 2007. Statutory Instrument 2007 No. 320. HMSO
36、: London, 2007Health and Safety Commission, Managing health and safety in construction Construction (Design and Management) Regulations 2007 Approved Code of Practice. HSC: London, 2007Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 30/07/2008 07:33, Uncontrolled Copy, (c) BSIBSI British Stan
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44、ards Online can be found at http:/www.bsi- information about BSI is available on the BSI website at http:/www.bsi-.CopyrightCopyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under
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