1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Part 1: Test methodsICS 83.140.99Elastomeric seismic-protection isolators BRITISH STANDARDBS ISO 22
2、762-1:2005Incorporating Technical Corrigendum No. 1BS ISO 22762-1:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 23 January 2006 BSI 2006ISBN 0 580 47677 4Cross-referencesThe British Standards which implement international publications r
3、eferred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary pro
4、visions 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 pagesThis document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages
5、1 to 78, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date Comments16669 Corrigendum No. 131 October 2006 Addition to 6.6.2.2, item a) and correction to equation in A.
6、4.5A list of organizations represented on this committee can be obtained on request to its secretary. present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European d
7、evelopments and promulgate them in the UK.National forewordThis British Standard reproduces verbatim ISO 22762-1:2005, including Technical Corrigendum July 2006 and implements it as the UK national standard.The UK participation in its preparation was entrusted to Technical Committee PRI/73, Industri
8、al rubber products, which has the responsibility to: aid enquirers to understand the text;Reference numberISO 22762-1:2005(E)INTERNATIONAL STANDARD ISO22762-1First edition2005-07-15Elastomeric seismic-protection isolators Part 1: Test methods Appareils dappuis structuraux en lastomre pour protection
9、 sismique Partie 1: Mthodes dessai BS ISO 22762-1:2005ii iiiContents Page Foreword iv Introduction v 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 2 4 Symbols and abbreviated terms 4 5 Rubber material tests . 10 5.1 Test items. 10 5.2 Test conditions and test pieces 10 5.3 Tensile pr
10、operties . 10 5.4 Ageing test. 11 5.5 Hardness 11 5.6 Adhesion 11 5.7 Compression set . 11 5.8 Dynamic shear properties 11 5.9 Fracture properties . 14 5.10 Brittleness point 14 5.11 Ozone resistance 14 5.12 Low temperature crystallization 14 6 Isolator tests 15 6.1 General. 15 6.2 Compression and s
11、hear stiffness tests 15 6.3 Various dependence tests 26 6.4 Ultimate shear properties. 39 6.5 Tensile testing . 41 6.6 Durability testing. 44 6.7 Reaction force due to low-rate deformation. 51 Annex A (normative) Determination of accelerated ageing conditions equivalent to expected life at 23 C . 54
12、 Annex B (normative) Inertia force correction 57 Annex C (normative) Friction force correction 59 Annex D (normative) Determination of coefficient of linear thermal expansion . 62 Annex E (informative) Confirmation list . 64 Annex F (informative) Alternative methods of determining shear properties 6
13、6 Annex G (informative) Creep test68 Annex H (informative) Determination of reaction force due to low-rate deformation . 70 Annex I (informative) Durability investigation of elastomeric isolators used for 10 years in a bridge . 72 Annex J (informative) Durability investigation of elastomeric isolato
14、rs used for 7 years in a building 74 Bibliography . 78 BS ISO 22762-1:2005iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO
15、 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates cl
16、osely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Dr
17、aft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this doc
18、ument may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 22762-1 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses). ISO 22762 consists of the following parts
19、, under the general title Elastomeric seismic-protection isolators: Part 1: Test methods Part 2: Applications for bridges Specifications Part 3: Applications for buildings Specifications BS ISO 22762-1:2005vIntroduction This International Standard contains two parts related to specifications for iso
20、lators one for bridges and the other for buildings since the requirements for isolators for bridges and for buildings are quite different, although the basic concept of the two products is similar. Therefore, when this International Standard is applied to the design of bridge isolators, Part 2 and t
21、he relevant clauses in Part 1 are used and, when it is applied to building isolators, Part 3 and the relevant clauses in Part 1 are used. The main differences to be noted between isolators for bridges and isolators for buildings are as below: a) Isolators for bridges are mainly rectangular in shape
22、and those for buildings circular in shape. b) Isolators for bridges are designed to be used for both rotation and horizontal displacement, while isolators for buildings are designed for horizontal displacement only. c) Isolators for bridges are designed to perform on a daily basis to accommodate len
23、gth changes of bridges caused by temperature changes as well as during earthquakes, while isolators for buildings are designed to perform only during earthquakes. d) Isolators for bridges are designed to withstand dynamic loads caused by vehicles on a daily basis as well as earthquakes, while isolat
24、ors for buildings are mainly designed to withstand dynamic loads caused by earthquakes only. For structures that are neither buildings nor bridges (e.g. tanks), the structural engineer may use either Part 2 or Part 3 of this International Standard, depending on the requirements of the structure. BS
25、ISO 22762-1:2005blank1Elastomeric seismic-protection isolators Part 1: Test methods 1 Scope ISO 22762 applies to elastomeric seismic isolators used to provide buildings or bridges with protection from earthquake damage. The isolators covered consist of alternate rubber layers and reinforcing steel p
26、lates. They are placed between a superstructure and its substructure to provide both flexibility for decoupling structural systems from ground motion, and damping capability to reduce displacement at the isolation interface and the transmission of energy from the ground into the structure at the iso
27、lation frequency. This part of ISO 22762 specifies the test methods for determination of the characteristics of elastomeric seismic isolators and for measurement of the properties of the rubber material used in their manufacture. The specifications cover testing for all properties required in the el
28、astomeric isolators, such as compression and shear properties, the durability of the isolators and the physical properties of the materials used in isolators. Annex E may be used to review those requirements needing confirmation prior to the test programme. 2 Normative references The following refer
29、enced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 37, Rubber, vulcanized or thermoplastic Determination of tensile
30、 stress-strain properties ISO 48, Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD) ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance tests ISO 812, Rubber, vulcanized Determination of low-temperature brittleness I
31、SO 813, Rubber, vulcanized or thermoplastic Determination of adhesion to a rigid substrate 90 peel method ISO 815, Rubber, vulcanized or thermoplastic Determination of compression set at ambient, elevated or low temperatures ISO 1431-1, Rubber, vulcanized or thermoplastic Resistance to ozone crackin
32、g Part 1: Static and dynamic strain testing ISO 1827, Rubber, vulcanized or thermoplastic Determination of modulus in shear or adhesion to rigid plates Quadruple shear method BS ISO 22762-1:20052 ISO 3387, Rubber Determination of crystallization effects by hardness measurements ISO 4664-1, Rubber, v
33、ulcanized or thermoplastic Determination of dynamic properties Part 1: General considerations ISO 7500-1:2004, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/compression testing machines Verification and calibration of the force-measuring system ISO 7619-2, Rubbe
34、r, vulcanized or thermoplastic Determination of indentation hardness Part 2: IRHD pocket meter method ISO 11346:2004, Rubber, vulcanized or thermoplastic Estimation of life-time and maximum temperature of use ISO 22762-2, Elastomeric seismic-protection isolators Part 2: Applications for bridges Spec
35、ifications ISO 22762-3, Elastomeric seismic-protection isolators Part 3: Applications for buildings Specifications ISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methods 3 Terms and definitions For the purposes of this document, the following terms
36、and definitions apply. 3.1 breaking rupture of elastomeric isolator due to compression (or tension)-shear loading 3.2 buckling state when elastomeric isolators lose their stability under compression-shear loading 3.3 compressive properties of elastomeric isolator compressive stiffness (vK ) for all
37、types of rubber bearings 3.4 compressive-shear testing machine machine used to test elastomeric isolators, which has the capability of shear loading under constant compressive load 3.5 cover rubber rubber wrapped around the outside of inner rubber and reinforcing steel plates before or after curing
38、of elastomeric isolators for the purpose of protecting the inner rubber from deterioration due to oxygen, ultraviolet rays and other natural elements and protecting the reinforcing plates from corrosion 3.6 design compressive stress long term compressive force on the elastomeric isolator imposed by
39、the structure 3.7 effective loaded area area sustaining vertical load in elastomeric isolators, which corresponds to the area of reinforcing steel plates BS ISO 22762-1:200533.8 effective width rectangular elastomeric isolator the smaller of the two side lengths of inner rubber to which direction sh
40、ear displacement is not restricted 3.9 elastomeric isolator rubber bearing, for seismic isolation of buildings, bridges and other structures, which consists of multi-layered vulcanized rubber sheets and reinforcing steel plates NOTE Types of such isolators include high-damping rubber bearings, linea
41、r natural rubber bearings and lead rubber bearings. 3.10 first shape factor ratio of effectively loaded area to free deformation area of one inner rubber layer between steel plates 3.11 high-damping rubber bearing HDR elastomeric isolator with relatively high damping properties obtained by special c
42、ompounding of the rubber and the use of additives 3.12 inner rubber rubber between multi-layered steel plates inside an elastomeric isolator 3.13 lead rubber bearing LRB elastomeric isolator whose inner rubber with a lead plug or lead plugs press fitted into a hole or holes of the isolator body to a
43、chieve damping properties 3.14 linear natural rubber bearing LNR elastomeric isolator with linear shear force-deflection characteristics and relatively low damping properties and fabricated using natural rubber NOTE Any bearing with relatively low damping may be treated as an LNR bearing for the pur
44、poses of isolator testing. 3.15 maximum compressive stress maximum compressive stress acting briefly on elastomeric isolators during an earthquake 3.16 nominal compressive stress long-term compressive stress recommended by the manufacturer for the isolator, including the safety margin 3.17 roll-out
45、instability of an isolator with either dowelled or recessed connection under shear displacement 3.18 routine test a test for quality control of the production isolators during and after manufacturing BS ISO 22762-1:20054 3.19 second shape factor circular elastomeric isolator ratio of the diameter of
46、 the inner rubber to the total thickness of the inner rubber rectangular or square elastomeric isolator ratio of the effective width of the inner rubber to the total thickness of the inner rubber 3.20 shear properties of elastomeric isolators a comprehensive term that covers characteristics determin
47、ed from isolator tests: shear stiffness (hK ) for LNR; shear stiffness (hK ) and equivalent damping ratio (eqh ) for HDR and LRB; post-yield stiffness (dK ) and characteristic strength (dQ ) for LRB. 3.21 structural engineer engineer who is in charge of designing of structure for base-isolated bridg
48、es or buildings and is responsible for specifying the requirements for elastomeric isolators 3.22 type test test for verification either of material properties and isolator performances during development of the product or that project design parameters are achieved 3.23 ultimate properties properti
49、es at either buckling, breaking, or roll-out of an isolator under compression-shear loading 3.24 ultimate property diagram UPD diagram giving the interaction curve of compressive stress and buckling strain or breaking strain of an elastomeric isolator 4 Symbols and abbreviated terms For the purposes of all three parts of ISO 22762, the symbols given in Table 1 apply. Table 1 Symbols and definitions Symbol Definition A effective plan area; plan area of elastome
