BS 6579-8-1987 Safety fences and barriers for highways - Specification for concrete safety barriers《公路的安全栏杆和护栅 混凝土安全护栅规范》.pdf
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1、BRITISH STANDARD BS 6579-8: 1987 Safety fences and barriers for highways Part 8: Specification for concrete safety barriers UDC625.738+692.88BS6579-8:1987 This British Standard, having been prepared under the directionof the Road EngineeringStandards Committee, was published underthe authority of th
2、e BoardofBSI and comes intoeffecton 30 November 1987 BSI 03-1999 First published February1985 First revision November1987 The following BSI references relate to the work on this standard: Committee reference RDB/18 Draft for comment86/15254DC ISBN0580162249 Committees responsible for this British St
3、andard The preparation of this British Standard was entrusted by the Road Engineering Standards Committee (RDB/-) to Technical Committee RDB/18upon which the following bodies were represented: Aluminium Federation Association of Consulting Engineers British Railways Board British Steel Industry Ceme
4、nt and Concrete Association Convention of Scottish Local Authorities County Surveyors Society Department of Transport (Highways) Institution of British Engineers Institution of Civil Engineers Institution of Highways and Transportation Royal Automobile Club Royal Society for the Prevention of Accide
5、nts The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Department of Transport (Transport and Road Research Laboratory) Fencing Contractors Association Amendments issued since publication Amd. No. Date of issue CommentsBS 6579-8:1987 BSI 03-
6、1999 i Contents Page Committees responsible Inside front cover Foreword ii 0 Introduction 1 1 Scope 1 2 Definitions 1 3 Construction 2 4 Materials 2 5 Manufacture and handling of precast units 3 6 Marking of precast units 4 Appendix A Vehicle safety fences and barriers for highways: type characteris
7、tics 5 Appendix B Information to be supplied by the purchaser 6 Figure 1 Profile type1: in-situ 7 Figure 2 Profile type2: in-situ 8 Figure 3 Profile type3: in-situ split level 9 Figure 4 Profile type4: precast units installed 10 Figure 5 Profile type5: precast units installed 11 Figure 6 Profile typ
8、e4: precast unit 12 Figure 7 Profile type5: precast unit 13 Figure 8 Precast3m standard length unit 14 Figure 9 Precast1m long make-up unit 15 Figure 10 Details of base and end fixings for precast units 16 Figure 11 Precast termination unit 17 Figure 12 Precast transition unit: type1(for transition
9、to double sided open box beam safety fence) 18 Figure 13 Connector for precast transition unit: type1to single sided open box beam safety fence 19 Figure 14 Connector for precast transition unit: type1to doublesidedopenbox beam safety fence 20 Figure 15 Precast transition unit: type2(for transition
10、to200mm100mm tensioned rectangular hollow section beam safety fence) 21 Figure 16 Connector for precast transition unit: type2 (for transition to tensioned rectangular hollow section beam safety fence) 22 Figure 17 Precast transition unit: type3(for transition to single sided open box beam safety fe
11、nce) 23 Figure 18 Precast transition unit: type4(for transition to200mm 100mm tensioned rectangular hollow section beam safety fence) 24 Figure 19 Connector for precast transition unit: type4(for transition totensioned rectangular hollow section beam safety fence) 25 Figure 20 Diagramatical represen
12、tation of fences and barriers 26 Table 1 Safety fences and barriers: type characteristics 5 Publications referred to Inside back coverBS 6579-8:1987 ii BSI 03-1999 Foreword This Part of BS6579has been prepared under the direction of the Road Engineering Standards Committee. The other Parts of BS6579
13、either published or in preparation are: Part 1: Specification for components for tensioned corrugated beam safety fence on Z posts; Part 2: Specification for tensioned corrugated beam safety fence on offset brackets; Part 3: Specification for tensioned rectangular hollow section beam safety fence (1
14、00mm 100mm); Part 4: Specification for tensioned rectangular hollow section beam safety fence (200mm 100mm); Part 5: Specification for open box beam safety fence (single height); Part 6: Specification for open box beam safety fence (double height); Part 7: Specification for untensioned corrugated be
15、am safety fences. In this revision of the1985edition of BS6579-8the principal changes are as follows. a) Additional figures have been included to cover extra types of transition unit (types3and4). b) Most of the existing figures have had minor modifications incorporated. c) The references to CP110“T
16、he structural use of concrete” Part1“Design, materials and workmanship” (now withdrawn) have been replaced by appropriate references to BS8110-1. This revision of BS6579supersedes the1985edition which is withdrawn. BS6579is being produced at the request of users and manufacturers in order to cover t
17、he various types of safety fences and barriers available. Fences detailed in Parts1to7have been developed already and approved for use in roads in the United Kingdom. The designs are based on the results of static and dynamic tests carried out in the past on components and complete systems under the
18、 direction of the Transport and Road Research Laboratory. The safety barrier detailed in this Part is for use only on certain roads at the date of publication of this Part of BS6579. If further types are developed, BS6579will be revised and increased in scope to cover additions and variations. A Bri
19、tish Standard does not 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 fro
20、nt cover, an inside front cover, pagesiandii, pages1to26,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 theinside front cover.BS 6579-8:1987 BSI 03-1999 1 0 Introduc
21、tion 0.1 The objective of providing safety fences and safety barriers adjacent to a highway is to reduce the consequences of vehicles leaving the carriageway and entering areas where it would be unsafe for them to travel. Safety fences are intended to absorb some of the energy of impact and to redir
22、ect the errant vehicle, so that it follows, within a narrow angle, the line of the fence in the direction of the traffic and does not overturn. Safety barriers are intended to provide containment without significant deflection or deformation under impact, and to re-direct errant vehicles along the l
23、ine of the barrier in the direction of traffic. 0.2 The safety fences and barriers for ground mounting which are the subject of BS6579are for use in conjunction with parapets on bridges and other structures, which are the subject of BS6779. Although definitions in both standards have been chosen so
24、as to align as closely as possible, there are some cases where the definition is applicable only to a particular Part of BS6579and does not apply generally. 0.3 No direct guidance is given in BS6579on the situations where safety fences and barriers should be erected or on the choice of the types des
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