CEN TS 14807-2013 Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) - Guidance for the structural analysis of buried.pdf

1、BSI Standards PublicationPD CEN/TS 14807:2013Plastics piping systems Glass-reinforced thermosettingplastics (GRP) based onunsaturated polyester resin(UP) Guidance for thestructural analysis of buriedGRP-UP pipelinesPD CEN/TS 14807:2013 PUBLISHED DOCUMENTNational forewordThis Published Document is th

2、e UK implementation of CEN/TS14807:2013.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/88/2, Plastics piping for pressure applications.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport t

3、o include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 82218 6ICS 91.140.60; 91.140.80; 93.030Compliance with a British Standard cannot confer immunity fromleg

4、al obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 31 December 2013.Amendments issued since publicationDate Text affectedPD CEN/TS 14807:2013TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 14807 Dec

5、ember 2013 ICS 91.140.60; 91.140.80; 93.030; 23.040.01 Supersedes CEN/TS 14807:2004English Version Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) - Guidance for the structural analysis of buried GRP-UP pipelines Systmes de canalisati

6、ons en plastiques - Plastiques thermodurcissables renforcs de verre (PRV) base de rsine polyester non satur (UP) - Guide pour lanalyse structurale de conduites PRV-UP enterres Kunststoff-Rohrleitungssysteme - Glasfaserverstrkte duroplastische Kunststoffe (GFK) auf der Basis von ungesttigtem Polyeste

7、rharz (UP) - Anleitung fr die statische Berechnung von erdverlegten GFK-UP-Rohrleitungen This Technical Specification (CEN/TS) was approved by CEN on 10 September 2013 for provisional application. The period of validity of this CEN/TS is limited initially to three years. After two years the members

8、of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available promptly at national level in

9、an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus,

10、 Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdo

11、m. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 14807

12、:2013 EPD CEN/TS 14807:2013CEN/TS 14807:2013 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Requirements .8 5 Classification and designation .9 Bibliography . 12 PD CEN/TS 14807:2013CEN/TS 14807:2013 (E) 3 Foreword This document (CEN/TS

13、 14807:2013) has been prepared by Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems”, the secretariat of which is held by NEN. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not

14、be held responsible for identifying any or all such patent rights. This document supersedes CEN/TS 14807:2004. The following is a list of the major technical changes that have been made since the previous edition: a) revised wording to reflect the revisions to GRP product standards EN 1796 and EN 14

15、364; b) revised wording to improve clarity of presentation. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Est

16、onia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. PD CEN/TS 14807:2013CE

17、N/TS 14807:2013 (E) 4 Introduction The purpose of this document is to provide guidance for the selection of a suitable structural analysis procedure for buried glass-reinforced thermosetting plastics (GRP) pipes. The design approach should be founded on accepted engineering principles and have been

18、demonstrated through field experience. The procedure should satisfy the requirements of GRP pipes and should provide dependable long-term performance. The limiting performance criteria for buried glass-reinforced thermosetting plastics (GRP) pipes are different than other pipe products, including th

19、ermoplastics pipes. Consequently, any recommendations on the use of GRP products should take these differences into consideration. Additionally, the method of structural analysis should accommodate these limiting performance criteria, so guidance on suitable design limits are given. Any structural a

20、nalysis procedure may be used provided it includes the assessment of short and long-term deflection and buckling resistance. Established structural analysis procedures, although found satisfactory for other materials, may not meet the needs of GRP. PD CEN/TS 14807:2013CEN/TS 14807:2013 (E) 5 1 Scope

21、 This Technical Specification, which is a guidance document for use with a structural analysis procedure for below ground installations, covers limits applicable to glass-reinforced thermosetting plastics (GRP) pipes used for the conveyance of liquids under pressure or gravity conditions. This docum

22、ent does not specify a particular structural analysis procedure but gives guidance on the selection of a structural analysis procedure. It concludes that any established structural analysis procedure may be used provided it includes the assessment of short and long-term deflection and buckling resis

23、tance. Products complying to the applicable GRP product standards EN 1796 or EN 14364, which are not subject to internal pressure, are suitable as long as the analysis shows that the long-term deflection of the installed pipes is limited to 6 %, which is the basic assumption of the GRP pipe product

24、standards. Products complying with the applicable system standards (EN 1796 or EN 14364), which are subject to internal pressure, are suitable as long as the analysis shows that the initial deflection of the installed pipes does not exceed 3 %. NOTE The approach followed when preparing a general str

25、uctural analysis procedure does not depend on the nominal size(s) of the pipe(s). A suitable structural analysis procedure should normally be capable of being used for pipes operating at different temperatures provided that the corresponding temperature re-rating factors for the relevant pipe proper

26、ties are applied, as specified in the referring standard(s). Nevertheless, high service temperatures may require an additional analysis of the longitudinal stresses and strains and/or a special design of the joints. Normal structural analysis procedures are intended to cover normal soil installation

27、 conditions. Pipes to be designed for installations in abnormal or unusual conditions, e.g. in quick soils or a marine sea-bed, may require special engineering. Some structural analysis procedures may include axial effects depending upon the type of joint used. 2 Normative references The following d

28、ocuments, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 805, Water supply -

29、 Requirements for systems and components outside buildings EN 1610, Construction and testing of drains and sewers EN 1796:2013, Plastics piping systems for water supply with or without pressure - Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) EN 14364:2013, P

30、lastics piping systems for drainage and sewerage with or without pressure - Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) - Specifications for pipes, fittings and joints ISO 7685, Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes

31、- Determination of initial specific ring stiffness ISO 10928, Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Methods for regression analysis and their use ISO 10466, Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes - Test met

32、hod to prove the resistance to initial ring deflection PD CEN/TS 14807:2013CEN/TS 14807:2013 (E) 6 ISO 10471, Glass-reinforced thermosetting plastics (GRP) pipes - Determination of the long-term ultimate bending strain and the long-term ultimate relative ring deflection under wet conditions ISO 1095

33、2, Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes and fittings - Determination of the resistance to chemical attack for the inside of a section in a deflected condition 3 Terms and definitions For the purposes of this document, the following terms and definitions apply

34、. NOTE For a more complete listing of terms and definitions for GRP pipes, see EN 1796:2013 and EN 14364:2013. 3.1 nominal pressure PN alphanumerical designation for pressure classification purposes, which has a numerical value equal to the resistance of a component of a piping system to internal pr

35、essure, when expressed in bars Note 1 to entry: The designation for reference or marking purposes consists of the letters PN plus a number. 3.2 nominal size DN alphanumerical designation of size of component, which is a convenient integer approximately equal to a manufacturing dimension in millimetr

36、es and which can apply to either the internal diameter (DN-ID) or the external diameter (DN-OD) Note 1 to entry: The designation for reference or marking purposes consists of the letters DN-ID or DN-OD plus a number. 3.3 nominal stiffness SN alphanumerical designation for stiffness classification pu

37、rposes, which has the same numerical value as the minimum initial value required, when expressed in newtons per square metre (N/m2) Note 1 to entry: The designation for reference or marking purposes consists of the letters SN plus a number. 3.4 specific ring stiffness S physical characteristic of th

38、e pipe, expressed in newtons per square metre Note 1 to entry: It is a measure of the resistance to ring deflection per metre length under external load and is defined by Formula (1): 3mdIES= (1) where E is the apparent modulus of elasticity as determined in a ring stiffness test, in newtons per squ

39、are metre (N/m2); I is the second moment of area in the longitudinal direction per metre length, in metres to the fourth power per metre, (m4/m) i.e. PD CEN/TS 14807:2013CEN/TS 14807:2013 (E) 7 123eI = (2) where e is the wall thickness, in metres (m); dmis the mean diameter of the pipe, in metres (m

40、). 3.5 initial specific ring stiffness S0value of S obtained when tested in accordance with ISO 7685, in newtons per square metre (N/m2) 3.6 re-rating factor RRFmultiplication factor that quantifies the relation between a mechanical, physical or chemical property at the service condition compared to

41、 the respective value at 23 C and 50 % relative humidity (R.H.) 3.7 non-pressure pipe or fitting pipe or fitting subject to an internal pressure not greater than 1 bar 3.8 pressure pipe or fitting pipe or fitting having a nominal pressure classification which is greater than 1 bar and which is inten

42、ded to be used with the internal pressure equal to or less than its nominal pressure when expressed in bars 3.9 buried pipeline pipeline which is subjected to the external pressure transmitted from soil loading, including traffic and superimposed loads and, possibly, the pressure of a head of water

43、3.10 non-buried pipeline pipeline which is subjected to negative and positive pressure, forces resulting from its supports, environmental conditions, e.g. snow and wind, and possibly pressure of a head of water 3.11 design service temperature maximum sustained temperature at which the system is expe

44、cted to operate, expressed in degrees Celsius (C) 3.12 minimum long-term design pressure Px,dleast value for mean long-term burst failure pressure, expressed in bars, which is evaluated in accordance with the procedures described in ISO 10928 and includes a design factor of safety, FSdNote 1 to entr

45、y: It is one of the parameters used to determine the minimum initial design pressure. PD CEN/TS 14807:2013CEN/TS 14807:2013 (E) 8 3.13 minimum long-term failure pressure Px,minleast value for long-term burst failure pressure, expressed in bars, which is evaluated in accordance with the procedures de

46、scribed in ISO 10928 and includes a factor of safety, FSminNote 1 to entry: It is one of the parameters used to determine the minimum initial design pressure. 3.14 minimum initial relative ring deflection before bore cracking occurs y2,bore,min/dminitial relative deflection, expressed as a percentag

47、e (%), at 2 min which a test piece is required to pass without bore cracking when tested in accordance with ISO 10466 3.15 minimum initial relative ring deflection before structural failure occurs y2,struct,min/dminitial relative deflection, expressed as a percentage (%), at 2 min which a test piece

48、 is required to pass without structural failure when tested in accordance with ISO 10466 3.16 minimum long-term relative ultimate ring deflection yu,wet,min,x/dmrequired minimum extrapolated value, expressed as a percentage (%), at 50 years derived from the ultimate deflection regression line obtain

49、ed from long-term deflection tests performed under wet conditions in accordance with ISO 10471 4 Requirements There are many procedures used for the structural analysis of buried pipelines. When considering the applicability of a particular structural analysis procedure for the design of a GRP pipeline the following requirements shall be met: a) The method shall be for flexible pipelines. b) Several methods are covered by EN 1295 1 2. In addition, ISO/TR 10465-2 6, which is felt more appropriate, covers design methods specifically written for GRP-UP pipes. c)