1、BRITISH STANDARDBS EN 1337-5:2005Structural bearings Part 5: Pot bearingsThe European Standard EN 1337-5:2005 has the status of a British StandardICS 91.010.30g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g
2、55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 1337-5:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 December 2006 BSI 2006ISBN 0 580 49851 4National forewordThis British Standard was published by BSI. It is the UK i
3、mplementation of EN 1337-5:2005. It partially supersedes BS 5400-9-1:1983 and BS 5400-9-2:1983 which will remain current until the remaining parts of the BS EN 1337 series have been published, the last part being Part 8.The UK participation in its preparation was entrusted to Technical Committee B/5
4、22, Structural bearings.A list of organizations represented on B/522 can be obtained on request to its secretary.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 cannot confer
5、 immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1337-5March 2005ICS 91.010.30English versionStructural bearings - Part 5: Pot bearingsAppareils dappui structuraux - Partie 5: Appareils dappui potLager im Bauw
6、esen - Teil 5: TopflagerThis European Standard was approved by CEN on 4 June 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and b
7、ibliographical references concerning such nationalstandards 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 translationunder the responsibility o
8、f a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Lat
9、via, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN
10、 All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1337-5:2005: EEN 1337-5:2005 (E) 2 Contents page Foreword. 3 1 Scope 4 2 Normative references . 4 3 Terms, definitions, symbols and abbreviations 5 4 Functional requirements 9 5 Materials.
11、 9 6 Design requirements 10 7 Manufacturing assembly and tolerances . 20 8 Conformity evaluation 21 9 Installation . 22 10 In-service inspection 22 Annex A (normative) Internal seals. 24 Annex B (informative) Determination of compression stiffness . 29 Annex C (informative) Factory Production Contro
12、l (FPC) 30 Annex D (normative) Determination of restraint moment. 33 Annex E (normative) Long term rotation and load test. 37 Annex F (normative) Test equipment 41 Annex G (informative) Application of internal seals . 43 Annex ZA (informative) Clauses of this European Standard addressing the provisi
13、ons of the EU Construction Products Directive 44 Bibliography . 56 EN 1337-5:2005 (E) 3 Foreword This document (EN 1337-5:2005) has been prepared by Technical Committee CEN/TC 167 “Structural bearings”, the secretariat of which is held by UNI. This European Standard shall be given the status of a na
14、tional standard, either by publication of an identical text or by endorsement, at the latest by December 2006, and conflicting national standards shall be withdrawn at the latest by December 2006. This document has been prepared under a mandate given to CEN by the European Commission and the Europea
15、n Free Trade Association, and supports essential requirements of EU Directive (s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. The European Standard EN 1337 consists of the following 11 parts: Part 1 General design rules Part 2 Sliding
16、 elements Part 3 Elastomeric bearings Part 4 Roller bearings Part 5 Pot bearings Part 6 Rocker bearings Part 7 Spherical and cylindrical PTFE bearings Part 8 Guide bearings and restrain bearings Part 9 Protection Part 10 Inspection and maintenance Part 11 Transport, storage and installation Accordin
17、g to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Port
18、ugal, Spain, Sweden, Switzerland and the United Kingdom. EN 1337-5:2005 (E) 4 1 Scope This part of EN 1337 specifies the requirements for the design and manufacture of pot bearings which will be used for operating temperatures between 40 C and 50 C. This part of EN 1337 does not apply to pot bearing
19、s made with other materials than those specified in clause 5. Bearings which are subjected to rotation dgreater than 0,030 rad (see Figure 2) under the characteristic combination of actions or which incorporate elastomeric pads larger than 1500 mm in diameter are beyond the scope of this document. D
20、epending on the climatic region where the construction work is located the bearings can be designed to one of the following classes related to minimum operating temperatures (the minimum shade air temperatures): - 25 C or 40 C. When required to accommodate translational movements, pot bearings may b
21、e combined with sliding elements in accordance with EN 1337-2. NOTE The minimum shade air temperature for a location should be obtained from meteorological data appropriate to a 120 year return period. Consideration should be given to adjustment of this temperature for height and local divergence su
22、ch as frost pockets and sheltered low-lying areas if the data obtained applies to a general area rather than to a specific location. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies.
23、 For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1337-1:2000, Structural bearings Part 1: General design rules. EN 1337-2:2004, Structural bearings Part 2: Sliding elements. EN 1337-9:1997, Structural bearings Part 9: Protection. EN 1337-1
24、0, Structural bearings Part 10: Inspection and maintenance. EN 1990, Eurocode - Basis of structural design. EN 10025-1, Hot rolled products of structural steels - Part 1: General technical delivery conditions. EN 10025-2, Hot rolled products of structural steels - Part 2: Technical delivery conditio
25、ns for non-alloy structural steels EN 10083-3, Quenched and tempered steels Part 3: Technical delivery conditions for boron steels. EN 10088-2, Stainless steels Part 2: Technical delivery conditions for sheet/plate and strip for general purposes. EN 10113-1, Hot-rolled products in weldable fine grai
26、n structural steels Part 1: General delivery conditions. EN 10204, Metallic products Types of inspection documents. EN 1337-5:2005 (E) 5 EN 12163, Copper and copper alloys Rod for general purposes. EN 12164, Copper and copper alloys Rod for free machining purposes. EN ISO 527-1, Plastics - Determina
27、tion of tensile properties - Part 1: General principles (ISO 527-1:1993 including Corr 1:1994). EN ISO 527-2, Plastics - Determination of tensile properties - Part 2: Test conditions for moulding and extrusion plastics (ISO 527-2:1993 including Corr 1:1994). EN ISO 1133, Plastics - Determination of
28、the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics (ISO 1133:1997). EN ISO 2039-1, Plastics - Determination of hardness - Part 1: Ball indentation method (ISO 2039-1:2001). EN ISO 4288, Geometrical product specifications (GPS) - Surface texture: Profile method - Rule
29、s and procedures for the assessment of surface texture (ISO 4288:1996). EN ISO 7500-1, Metallic materials - Verification of static uniaxial testing machines - Part 1: Tension/compression testing machines - Verification and calibration of the force-measuring system (ISO 7500-1:2004) ISO 1083, Spheroi
30、dal graphite cast irons Classification. ISO 1183, Plastics Methods for determining the density of non-cellular plastics. ISO 3755, Cast carbon steels for general engineering purposes. ISO 6446, Rubber products Bridge bearings Specification for rubber materials. 3 Terms, definitions, symbols and abbr
31、eviations 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply (see Figure 1). EN 1337-5:2005 (E) 6 Key 1 Internal seal 2 Piston 3 Protection by external seal in this area 4 Elastomeric pad 5 Pot NOTE Pot bearings can be used with the pot inverted. F
32、igure 1 Details of a pot bearing 3.1.1 accumulated slide path the sum of the relative movements between the internal seal and the pot wall resulting from variable rotations 3.1.2 elastomeric pad component which provides the rotational capability 3.1.3 external seal component or material which is use
33、d to exclude moisture and debris from the gap between the piston and the pot 3.1.4 internal seal component which prevents escape of the elastomer material through the clearance between the recess walls and the piston when a compressive force is applied 3.1.5 lubricant special grease used to reduce t
34、he friction between the pad and the metallic components for the purpose of reducing wear as well as the rotation stiffness 3.1.6 piston component which closes the open end of the recess in the pot and bears on the elastomeric pad EN 1337-5:2005 (E) 7 3.1.7 pot component with a machined recess which
35、contains the elastomeric pad, piston and internal seal 3.1.8 pot bearing structural bearing consisting of an elastomeric pad (rotational element) confined in a cylinder by means of a close fitting piston and an internal seal 3.1.9 sliding pot bearing pot bearing combined with a sliding element to ac
36、commodate translational movement in one or any direction 3.2 Symbols For the purposes of this document, the following symbols apply: 3.2.1 Latin upper case letters A cross section area, in square millimetres D internal diameter of pot, in millimetres DOouter diameter of pot ring, in millimetres F0fa
37、ctor in restoring moment formula for zero rotation F1factor in restoring moment formula for lubricated pad F2factor in restoring moment formula for unlubricated pad Fw, resistance of weld in Newton per millimetre Fxy,applied horizontal load, in Newton H depth of the cylindrical recess in millimetres
38、 M resistance moment from pad and internal seal in test in Newton millimetre Meresistance moment from pad and internal seal in Newton millimetre MRadditional moment from friction between piston and pot in Newton millimetre MTtotal resistance moment from rotation in Newton millimetre N axial force in
39、 Newtons R radius of contact surface in millimetres T thickness of the pot base in millimetres V total transverse or shear force in Newton V total transverse or shear force per unit length in Newton per millimetre EN 1337-5:2005 (E) 8 Ve,shear force due to elastomer pressure in Newton 3.2.2 Latin lo
40、wer case letters b calculated piston/pot contact width, in millimetres d diameter of elastomeric pad, in millimetres dcteffective contact diameter of upper surface, in millimetres dcbeffective contact diameter of lower surface, in millimetres fUultimate strength of material, in Newton per square mil
41、limetre fyyield strength of material, in Newton per square millimetre fe,ddesign contact strength of the elastomer, in Newton per square millimetre t nominal thickness of elastomeric pad in millimetres w width of piston face in millimetres 3.2.3 Greek letters Mpartial safety factor rotation angle du
42、e to permanent and variable actions, in radians 1resultant rotation angle due to permanent actions, in radians 2resultant rotation angle due to traffic loads, in radians rotation angle in restoring moment test, in radians 3.2.4 Subscripts Rd design resistance d design value Sd design internal forces
43、 and moments from actions u ultimate limit state 3.3 Abbreviations PTFE polytetrafluoroethylene POM polyoxymethylene (acetal) EN 1337-5:2005 (E) 9 4 Functional requirements 4.1 General A pot bearing shall be capable of transferring applied vertical and horizontal loads between the superstructure and
44、 substructure and shall permit limited rotational movement (see 6.1.2). The internal seal system shall prevent extrusion of the elastomer from the pot. These requirements shall be met with adequate reliability and durability, see EN 1990. It is assumed that adequate reliability, durability, load bea
45、ring capacity and rotation capability result from adopting the design procedures given in clauses 5 and 6. When using an internal seal system indicated in annex A, pot bearings designed and used in accordance with this part of EN 1337 are considered to meet the aforementioned requirements. 4.2 Tests
46、 for durability When necessary (see 5.4) the long term functioning according to 4.1 shall be tested in accordance with annex E. Acceptance criteria for these tests are: there shall be no extrusion of cohesive elastomeric material. the compression deformation under the test load shall have not increa
47、sed for at least 24 h. NOTE Wear of the seal and discoloration of the lubricant is acceptable in these tests. 5 Materials 5.1 General Materials used for the manufacture of pot bearings shall be in accordance with the requirements given in the following sub-clauses. 5.2 Ferrous materials for pot and
48、piston The pot and piston shall be manufactured from ferrous materials in accordance with one of the following standards: EN 10025, EN 10083-3, EN 10113-1, EN 10088-2, ISO 3755, ISO 1083. Specification and certification of material shall correspond to the requirements for resistance and durability,
49、weldability, if applicable, and the operating temperature specified (see clause 1). 5.3 Elastomeric materials The elastomer material used for the elastomeric pad shall be natural or polychloroprene rubber in accordance with ISO 6446. 5.4 Internal seal Suitable internal seals are given in annex A. The internal seals given in annex A shall be classified with regard to the standard accumulated slide path, given in annex E as follows: EN 1337-5:2005 (E) 10 Seals according to A.1.1 accumulated slide path “b”, 1000 m Seals acco
