BS EN 642-1995 包括接头、配件和管道预应力钢特殊要求的圆柱型和非圆柱型预应力混凝土压力管.pdf

BRITISH STANDARD BS EN 6421995 Incorporating Corrigendum No. 1 Prestressed concrete pressure pipes, cylinder and non-cylinder, including joints, fittings and specific requirement for prestressing steel for pipes The European Standard EN 6421995 has the status of a British Standard ICS 23.040.50 BS EN 6421995 This British Standard, having been prepared under the direction of the Sector Board for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 15 June 1995 BSI 7 December 2004 The following BSI references relate to the work on this standard Committee reference B/505 Draft for comment 92/12539 DC ISBN 0 580 24113 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee B/505, Water supply, upon which the following bodies were represented Association of Consulting Engineers Association of Manufacturers of Domestic Unvented Supply Systems Equipment MODUSSE British Bathroom Council British Foundry Association British Non-Ferrous Metals Federation British Plastics Federation British Plumbing Fittings Manufacturers’ Association Department of the Environment Department of the Environment Drinking Water Inspectorate Fibre Cement Manufacturers’ Association Limited Institute of Plumbing Institution of Water and Environmental Management Local Authority Organizations Scottish Association of Directors of Water and Sewerage Services Water Companies Association Water Research Centre Water Services Association of England and Wales The following bodies were also represented in the drafting of the standards, through subcommittees and panels Association of Metropolitan Authorities British Precast Concrete Federation Ltd. Concrete Pipe Association Concrete Society Department of Transport Federation of Civil Engineering Contractors Institution of Civil Engineers Institution of Highways and Transportation Amendments issued since publication Amd. No.DateComments 15453 Corrigendum No. 1 7 December 2004National foreword amended 标准分享网 w w w .b z f x w .c o m 免费下载 w w w . b z f x w . c o m BS EN 6421995 BSI 7 December 2004 i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 6423 w w w . b z f x w . c o m BS EN 6421995 ii BSI 7 December 2004 National foreword This British Standard has been prepared by Technical Committee B/504 and is the English language version of EN 6421994 Prestressed concrete pressure pipes, cylinder and non-cylinder, including joints, fittings and specific requirement for prestressing steel for pipes, published by the European Committee for Standardization CEN. Together with BS EN 639 it supersedes BS 4625, which is withdrawn. EN 642 was published as a result of international discussion in which the UK took an active part. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its 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 front cover, pages i and ii, the EN title page, pages 2 to 23 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. 标准分享网 w w w .b z f x w .c o m 免费下载 w w w . b z f x w . c o m EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 642 October 1994 ICS 23.040.30; 23.040.50 Descriptors Water pipelines, pressure pipes, potable water, water pipes, concrete tubes, prestressed concrete, metal plates, specifications, computation, equipment specifications, dimensions, tests English version Prestressed concrete pressure pipes, cylinder and non-cylinder, including joints, fittings and specific requirement for prestressing steel for pipes Tuyaux pression en bton prcontraint, avec ou sans me en tle, y compris joints et pices spciales et prescriptions particulires relatives au fil de prcontrainte pour tuyaux Spannbetondruckrohre, mit und ohne Blechmantel, einschlielich Rohreverbindungen, stcke und besonderen Anforderungen an Spannstahl fr Rohre This European Standard was approved by CEN on 1994-10-26. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions English, French, German. A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, 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 de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 6421994 E w w w . b z f x w . c o m EN 6421995 BSI 7 December 2004 2 Foreword This European Standard for concrete pipes is a standard which was prepared by WG5, Concrete pipes, of the Technical Committee CEN/TC 164, Water supply, the Secretariat of which is held by AFNOR. During preparation of this standard the provisional results already available of CEN/TC 164/WG 1, General requirements for external systems and components, and of CEN/TC 164/165/JWG 1, Structural design, were considered. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 1995, and conflicting national standards shall be withdrawn at the latest by April 1995. In accordance with the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword2 0Introduction3 1Scope3 2Materials3 3Design and fabrication of pipe3 3.1General requirements3 3.1.1 General3 3.1.2 Wall thickness4 3.2Design of pipes5 3.2.1 General5 3.2.2 Design requirements5 3.3Reinforcement5 3.4Concrete and mortar5 3.4.1 Mix design5 3.4.2 Concrete strength6 3.5Prestressing6 3.5.1 Longitudinal prestressing6 3.5.2 Circumferential prestressing6 3.5.3 Multiple layers7 3.6Curing7 4Factory testing7 4.1Concrete test7 4.2Hydrostatic test7 Page 4.2.1 General7 4.2.2 Cylinder pipe7 4.2.3 Non-cylinder pipe7 4.2.4 Test pressure7 4.3Permeability test on coating8 4.3.1 Test purpose8 4.3.2 Test frequency on products8 4.3.3 Testing equipment8 4.3.4 Test 8 4.3.5 Test results8 4.3.6 Test acceptance criteria9 Annex A normative Specific technical requirements for high tensile steel wire used for prestressing concrete pipe with or without steel cylinder11 Annex B inative Typical joints17 Annex C inative Design guidance for prestressed concrete cylinder pipes19 Annex D inative Design guidance for prestressed concrete non-cylinder pipes22 Figure 1 Typical permeability test equipment9 Figure 2 Permeability test results and examples10 Figure A.1 Details of test cylinder14 Figure A.2 Wound test cylinder15 Figure A.3 Typical arrangement for winding the test cylinders15 Figure A.4 Arrangement of test cylinder in acid solution16 Figure B.1 Typical steel joints17 Figure B.1A Typical embedded cyclinder pipe joint17 Figure B.1B Typical internal weld joint17 Figure B.1C Typical lined cyclinder pipe joint17 Figure B.1D Typical external weld joint17 Figure B.2 Typical concrete joints18 Figure B.2A Typical sliding ring joint18 Figure B.2B Typical rolling ring joint18 Figure B.2C Typical monolithic pipe rolling ring joint18 Figure B.2D Typical monolithic pipe sliding ring joint18 Figure B.2E Typical sliding ring joint with metal seating for sealing ring18 Table 1 Minimum design wall thickness4 标准分享网 w w w .b z f x w .c o m 免费下载 w w w . b z f x w . c o m EN 6421995 BSI 7 December 2004 3 0 Introduction The product1 in permanent or temporary contact with water, intended for human consumption, shall not adversely affect the quality of the drinking water and shall not contravene the CE Directives and EFTA Regulations on the quality of drinking water. This standard is to be used together with the common requirements standard EN 639. When the relevant EN dealing with general requirements, such as General requirements for external systems and components CEN/TC 164/WG 1, Materials in contact with water CEN/TC 164/WG 3, and Structural design CEN/TC 164/165/JWG 1 are adopted, the current standards shall be revised, where appropriate, in order to ensure that these requirements comply with these relevant ENs. To the present standard are attached Annex A normative Specific technical requirements for high tensile steel wire used for prestressing concrete pipe with or without steel cylinder; Annex B inative Typical joints; Annex C inative Design guidance for prestressed concrete cylinder pipes; Annex D inative Design guidance for prestressed concrete non-cylinder pipes. 1 Scope This standard covers the requirements and the manufacture of prestressed concrete cylinder and non-cylinder pressure pipes and fittings in sizes from DN/ID 500 to DN/ID 4000 inclusive. Larger sizes could be manufactured based on the concepts of this standard. These types of pipes are designed for the internal pressure, external loads and bedding conditions designated by the purchaser. 2 Materials Materials are specified in Clause 5 of EN 639 common requirements. Additional requirement is specified as follows The maximum size of aggregate shall not exceed the least of the following the concrete cover; or 0,33 times the thickness of the non-cylinder core pipe wall; or 0,33 times the concrete wall thickness on either side of the steel cylinder. 3 Design and fabrication of pipe 3.1 General requirements 3.1.1 General Prestressed concrete cylinder pipe shall have the following principal features a welded steel cylinder with steel joint rings welded to its ends; for lined-cylinder pipe, a core consisting of a lining of concrete within the steel cylinder, or for embedded-cylinder pipe, a core consisting of the steel cylinder encased in concrete; circumferential prestressing with high-tensile wire wound around the outside of the core in one or more layers at a predetermined stress and fastened securely at its ends; a coating of dense mortar or concrete, covering and protecting the core and wire, except for the necessarily exposed surfaces of the joint rings; a self-centring joint so designed that the joint shall be watertight under all conditions of service. 1Should be considered as any product used for the conveyance and distribution of water intended for human consumption. w w w . b z f x w . c o m EN 6421995 4 BSI 7 December 2004 Prestressed concrete non-cylinder pipe shall have the following principal features a concrete core pipe either steel reinforced or longitudinally prestressed with pretensioned high tensile steel wire embedded in the concrete; circumferential prestressing with high-tensile wire wound around the outside of the core in one or more layers at a predetermined stress and fastened securely at its ends; a coating of dense mortar or concrete, covering and protecting the wire; a self-centring joint so designed that the joint shall be watertight under all conditions of service. Or for monolithic type a concrete pipe longitudinally prestressed with pretensioned high tensile steel wire embedded in the pipe wall which is cast in one operation; circumferential prestressing by means of a reinforcement cage of high tensile steel wire also embedded in the pipe wall and prestressed to a predetermined stress by means of hydraulic expansion while the concrete is still fresh; a self-centring joint so designed that the joint shall be watertight under all conditions of service. 3.1.2 Wall thickness Table 1 shows the minimum design wall thickness for each type of pipe. Table 1 Minimum design wall thickness Pipe DN/IDCylinder pipeNon-cylinder pipe t1 mint2 mint3 min monolithic mmmmmmmm 500504045 600504045 700504050 800504555 900554560 1 000655065 1 100705070 1 200756075 1 250756080 1 400857085 1 500907090 1 6001007595 1 80011575105 2 00012580115 2 20013590125 2 400145100135 2 500150100140 2 600160110145 2 800170120155 3 000180130165 3 200190140 3 500210160 4 000240180 NOTES t1 min minimum design thickness of the core wall including the thickness of the cylinder. t2 min minimum design thickness of the core wall. t3 min minimum design thickness of the pipe wall. 标准分享网 w w w .b z f x w .c o m 免费下载 w w w . b z f x w . c o m EN 6421995 BSI 7 December 2004 5 3.2 Design of pipes 3.2.1 General The reinforcement of the cylinder pipe shall consist of a welded steel cylinder in the core and high-tensile wire helically wound around the core under measured and controlled tension after the concrete in the core has been placed and cured. The minimum design thickness of the cylinder shall be 1,5 mm for all diameters. For both cylinder and non-cylinder pipe the size of the high-tensile wire and the spacing and tension under which it is wound shall be such that the requirements specified for the design conditions stated in Clause 3.2.2 are met. The design shall fully recognize all losses due to elastic and inelastic deations. The initial tension in the high-tensile wire shall not exceed 75 of the characteristic strength of the wire. The wire shall not be less than 4 mm in diameter. The minimum clear spacing between wires shall be the wire diameter up to a maximum of 6 mm in the same layer of reinforcement. The maximum centreline spacing of the wire shall be 50 mm. For lined-cylinder pipe with wire 6 mm and larger, the maximum centreline spacing of the wire shall be 25 mm. 3.2.2 Design requirements The pipes shall be designed to resist the flexural and hoop stresses resulting from each of the following conditions design pressure dead load there shall be no tension in the core; maximum design pressure 100 kPa dead load tension in the core shall not exceed 0,38 3fck2 for cylinder pipe or 0,133fck2 for non-cylinder pipe; design pressure dead load live load tension in the core sha