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1、BRITISH STANDARD BS 5649-6: 1982 EN 40-6 Lighting columns Part 6: Specification for design loads This European Standard EN 40-6 was given, as from 29 October 1982 the status of a British Standard and will replace the relevant requirements of BS 1308, BS 1840 and BS 3989 (see national foreword). UDC
2、624.971:628.971:624.042 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:31:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5649-6:1982 This British Standard was published under the authority of the Board of BSI and comes into effect on 29 October 1982 BSI 12-1998 The following BSI referen
3、ces relate to the work on this standard: Committee reference RDB/28 Draft for comment 77/10154 DC ISBN 0 580 12894 6 Cooperating organizations The European Committee for Standardization, under whose supervision this European Standard was prepared, comprises the national standards organizations of th
4、e following Western European countries: Austriasterreichisches Normungsinstitut BelgiumInstitut Belge de Normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliitto, r.y. FranceAssociation Franaise de Normalisation GermanyDeutsches Institut fr Normung E.V. IrelandInstitute fo
5、r Industrial Research and Standards ItalyEnte Nazionale Italiano di Unificazione NetherlandsNederlands Normalisatie-instituut NorwayNorges Standariseringsforbund PortugalRepartio de Normalizao SpainInstituto Nacional de Racionalizacin y Normalizacin SwedenStandardiseringskommissionen i Sverige Switz
6、erlandAssociation Suisse de Normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:31:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5649-6:1982 BSI 12-1998i Contents Page
7、 Cooperating organizationsInside front cover National forewordii Brief history2 Foreword2 1Scope and field of application3 2Basis of loads3 3Forces and moments4 Annex A National particularities 6 National appendix A9 National appendix B9 Figure 1 Factor b for the dynamic behaviour of columns7 Figure
8、 2 Shape coefficient for circular and octagonal cross sections8 Table 1 Rationalized k values for the UK10 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:31:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5649-6:1982 ii BSI 12-1998 National forew
9、ord BS 5649 will be issued in Parts as they are completed and approved, and until the first nine Parts are published it will not be possible to supersede the present British Standards for lighting columns. As the Parts are issued recommendations will be given for their implementation together with a
10、 list of clauses in the existing standards which they will eventually supersede. It is hoped that a gradual change-over will be obtained which will terminate with the total withdrawal of the existing standards. The British Standards affected by BS 5649-6 are BS 1308, BS 1840 and BS 3989, specificati
11、ons for concrete, steel and aluminium street lighting columns respectively. It is anticipated that the affected clauses in the existing standards will be withdrawn in accordance with the following timetable: BS 1840 and BS 3989: One year from the publication of this standard BS 1308: Three years fro
12、m the date of the last Part published, of Parts 3 to 9 of this standard BS 5649-6 covers some or all of the requirements also covered in the following clauses of the existing British Standards. BS 1308 1.20 Design 1.23 Information to be supplied with enquiry or order BS 1840 17 Design loadings BS 39
13、89 17 Design loadings It should be noted that the work on the further Part, dealing with special requirements for plastics columns and mentioned in the CEN foreword, is not now to proceed. National appendix B gives the k factors for use in the UK and it relates to 2.2.6 of EN 40-6:1982. NOTEThe titl
14、es of the publications referred to in this standard are listed on the inside back cover. Convention. In this European Standard the comma has been used as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. A British Standard does n
15、ot purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside
16、front cover, pages i and ii, the EN title page, pages 2 to 10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun shef
17、fieldun, na, Mon Dec 04 16:31:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 40-6 Edition 1 February 1982 UDC 624.971:628.971:624.042 Key words: luminaire, lighting column, street lighting, strains, loads (forces), climatic overload, wind pressure,
18、 moments, force English version Lighting columns Part 6: Design loads Candlabres dclairage public Charges de calcul Lichtmaste Belastungsannahmen This European Standard was accepted by CEN on 1981-04-13. The CEN members are bound to adhere to the CEN Internal Regulations which specify under which co
19、nditions this European Standard has to be given, without any alteration, the status of a national standard. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Central Secretariat or to any CEN member. This European Standard is
20、 established by CEN in three official versions (English, French, German). A translation made by another member under its own responsibility, in its own language, and notified to CEN has the same status. CEN members are the national standards organizations of Austria, Belgium, Denmark, Finland, Franc
21、e, Germany, Greece, Ireland, Italy, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue Brderode 2 B-1000 Brussels Copyright reserved to all CEN
22、 members Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:31:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 40-6 BSI 12-1998 2 Brief history This European Standard was drawn up by the Technical Committee CEN/TC 50 “Lighting columns and spigots”, the Secretariat of which is held by BSI. Th
23、is European Standard was adopted by CEN on the strength of its acceptance by the following member countries: France, Germany, Greece, Italy, Netherlands, Spain, Switzerland, United Kingdom. Foreword This European Standard was drawn up by the member countries of CEN/TC 50, Austria, Belgium, France, G
24、ermany, Italy, Netherlands, Switzerland and United Kingdom (Secretariat). The standard EN 40 “Lighting columns” consists of the following Parts: Part 1: Definitions and terms; Part 2: Dimensions and tolerances; Part 3: Materials; Part 4: Surface protection of metal lighting columns; Part 5: Base com
25、partments and cableways; Part 6: Loads; Part 7: Verification of structural design by calculation1); Part 8: Verification of structural design by testing; Part 9: Special requirements for reinforced and prestressed concrete lighting columns. A further Part dealing with special requirements for plasti
26、cs columns is in preparation. 1) At present still a draft. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:31:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 40-6 BSI 12-19983 1 Scope and field of application This European Standard specifies design loads for lighting columns. It applies t
27、o post top columns # 20 m nominal height and to columns with brackets # 18 m nominal height. This standard does not take into account effects caused by the shedding of vortices (Karman turbulence). Special structural designs to permit the attachment of signs, overhead wires, etc. are not covered by
28、this standard. 2 Basis of loads 2.1 Dead loads The masses of the bracket and the lantern shall be taken into consideration. 2.2 Wind pressures 2.2.1 General. The design wind pressures, qhB, to be taken into account shall be obtained by applying various factors to the standard basic pressure, 500 N/m
29、2 (see 2.2.2). The factors make allowance for the following: a) the variability relative to the height above ground level, (see 2.2.3); b) the variability relative to the nominal height of the lighting column, (see 2.2.4); c) the dynamic behaviour due to the effects of gusts, b (see 2.2.5); d) the v
30、ariability due to the erection site and its prevailing wind speeds, k (see 2.2.6). 2.2.2 Standard basic pressure. The standard basic pressure at a height of 10 m above ground level shall be taken as 500 N/m2. 2.2.3 Factor for height above ground level. To obtain the pressure at any height other than
31、 10 m above ground level the standard basic pressure shall be multiplied by the factor , = 1 + 0,02 (hB 10) where 2.2.4 Factor for column height. The greater the size of a surface subject to wind, the more unlikely it is that the maximum pressure, on which the calculation is based, acts over its ful
32、l area. The resultant smaller wind load on a component is taken into account by the factor dependent on the size of the area. The ruling dimension for the size of the area subject to the wind is the greatest dimension in one direction. For a lighting column this is the nominal height h in metres. Th
33、e value of the factor shall be obtained from the equation = 1 0,01 h 2.2.5 Factor for dynamic behaviour of lighting column. The factor b is dependent upon the basic period of vibration T and the damping of the “column/lantern” system and takes into account the increase in the load resulting from the
34、 dynamic behaviour of the lighting column caused by wind gusts. The period of vibration T in seconds for the determination of b in accordance with Figure 1 shall be obtained either by calculation or by testing. 2.2.6 Factor for location of column. To allow for the different sites where lighting colu
35、mns are used and the different ways in which wind loads are specified in the various national standards, the standard basic pressure shall be multiplied by a factor k which takes these conditions into account. The factor k is the value by which the standard basic pressure 500 N/m2 shall be multiplie
36、d so that the resultant basic pressure agrees with the maximum basic pressure specified in the national standard for a given area of basic pressure for a height of 10 m above ground level. Where the lighting column is erected on an elevated structure, the factor k shall be correspondingly increased.
37、 NOTEThe k factors for the various countries are given in annex A. 2.2.7 Design wind pressure. The design wind pressure, qhB, in N/m2, for any particular height above ground, hB, shall be obtained from the following equation, using the appropriate values for the various factors qhB = 500 b k 2.3 Sha
38、pe coefficient 2.3.1 Shape coefficient for columns and brackets with circular cross sections. For circular cross sections the shape coefficient c shall be taken from Figure 2. hBis the height in m above ground level of the point under consideration on the lighting column. Licensed Copy: sheffieldun
39、sheffieldun, na, Mon Dec 04 16:31:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 40-6 4 BSI 12-1998 2.3.2 Shape coefficient for columns and brackets with regular octagonal cross sections. For regular octagonal cross sections with an r/D ratio of 0,075, where r is the radius of corner and D is the
40、distance across flats, the shape coefficient c shall be taken from the upper curve in Figure 2. For regular octagonal cross sections with an r/D ratio of $ 0,075 the shape coefficient c shall be taken from the lower curve in Figure 2. For continuously tapered regular octagonal sections with rounded
41、corners the r/D ratio used to calculate c may be taken as the value at the mid-point of the section. 2.3.3 Shape coefficients for columns and brackets with other cross sections. For cross sections other than circular and regular octagonal, the shape coefficient c shall be taken from national standar
42、ds or shall be based on reliable test results. 2.3.4 Shape coefficient for lanterns. It is recommended that the horizontal shape coefficient and the vertical lift coefficient, due to wind in the horizontal direction, for lanterns should be determined from wind tunnel tests. The maximum values obtain
43、ed in the test for wind inclinations between 5 to the horizontal shall be adopted. Vertical wind loads on lanterns shall only be considered when their effect is additive to the loading condition being considered. In the absence of values determined by wind tunnel tests, a single horizontal coefficie
44、nt of 1,0 shall be adopted. The lift coefficient shall then be taken as zero. Where there is a cluster of lanterns, a corresponding shape coefficient for the cluster shall be taken into account. 3 Forces and moments 3.1 Forces due to wind pressure and dead load 3.1.1 Horizontal force on any part of
45、the perpendicular column shaft. The horizontal force, in N, on any part of the perpendicular column shaft shall be calculated using the following equation Fc = Ac c qhB where 3.1.2 Horizontal force on any part of the bracket projecting from the column. The horizontal force, in N, on any part of the
46、bracket projecting from the column shall be calculated using the following equation Fb = Ab c qhB where 3.1.3 Forces on the lantern. The forces, in N, on the lantern shall be calculated using the following equation Fl = Al c qhB where 3.1.4 Forces due to dead loads. The vertical forces resulting fro
47、m the masses of the bracket and the lantern shall be taken to act at the centres of gravity of the respective parts. Fcis the partial horizontal force, in N, due to wind pressure acting at the centre of the area of the section of the column shaft being considered; Ac is the projected area, in m2, on
48、 the vertical plane normal to the direction of the wind, of the section of the column shaft being considered; cis the shape coefficient for the section of the column shaft being considered; qhB is the design wind pressure in N/m2 at the centre of the area of the section of the column shaft being con
49、sidered. Fbis the partial horizontal force, in N, due to wind pressure acting at the centre of the area of the section of the bracket being considered; Ab is the projected area, in m2, on the vertical plane normal to the direction of the wind, of the section of the bracket being considered; cis the shape coefficient for the section of the bracket being considered; qhB is the design wind pressure, in N/m2, at the centre of the area of the section of the bracket being considered. Flis the partial horizontal or ve