1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Part 3: Applications for buildings SpecificationsICS 83.140.99; 91.120.25Elastomeric seismic-protec
2、tion isolators BRITISH STANDARDBS ISO 22762-3:2005Incorporating Technical Corrigendum No. 1BS ISO 22762-3:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 23 January 2006 BSI 2006ISBN 0 580 47032 6Cross-referencesThe British Standards whic
3、h implement international publications referred 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
4、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 pagesThis document comprises a front cover, an inside front cover, the ISO title p
5、age, pages ii to vi, pages 1 to 63 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 Comments16668 Corrigendum No. 131 October 2006 Change to 6.5.5.2, item c), 6.5.6.2, item c), 6.6.3, ite
6、m b) and Annex F, Formula 2A 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 inte
7、rnational and European developments and promulgate them in the UK.National forewordThis British Standard reproduces verbatim ISO 22762-3:2005, including Technical Corrigendum July 2006, and implements it as the UK national standard.The UK participation in its preparation was entrusted to Technical C
8、ommittee PRI/73, Industrial rubber products, which has the responsibility to: aid enquirers to understand the text;Reference numberISO 22762-3:2005(E)INTERNATIONAL STANDARD ISO22762-3First edition2005-07-15Elastomeric seismic-protection isolators Part 3: Applications for buildings Specifications App
9、areils dappuis structuraux en lastomre pour protection sismique Partie 3: Applications pour btiments Spcifications BS ISO 22762-3:2005ii iiiContents Page Foreword. v Introduction . vi 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 2 4 Symbols and abbreviated terms . 4 5 Classificati
10、on. 8 5.1 General. 8 5.2 Classification by construction 8 5.3 Classification by ultimate properties 10 5.4 Classification by tolerance on shear properties . 10 6 Requirements 11 6.1 General. 11 6.2 Type tests and routine tests 12 6.3 Functional requirements 12 6.4 Design compressive force and design
11、 shear displacement 13 6.5 Performance requirements 13 6.6 Rubber material requirements. 19 6.7 Dimensional requirements. 20 6.8 Requirements on steel used for flanges and reinforcing plates . 21 7 Design rules 22 7.1 General. 22 7.2 Shape factor 22 7.3 Compression and shear properties 23 7.4 Ultima
12、te properties . 24 7.5 Reinforcing steel plates . 26 7.6 Connections 27 8 Manufacturing tolerances 27 8.1 General. 27 8.2 Measuring instruments 27 8.3 Plan dimensions . 27 8.4 Product height. 28 8.5 Flatness . 29 8.6 Horizontal offset 30 8.7 Plan dimensions of flanges . 31 8.8 Flange thickness. 31 8
13、.9 Tolerances on positions of flange bolt holes 32 9 Marking and labelling . 32 9.1 General. 32 9.2 Information to be provided 32 9.3 Additional requirements 33 9.4 Marking and labelling examples 33 10 Test methods. 33 11 Quality assurance. 33 BS ISO 22762-3:2005iv Annex A (normative) Tensile stress
14、 in reinforcing steel plate 34 Annex B (informative) Confirmation list. 36 Annex C (informative) Determination of ultimate property diagram based on experimental results 38 Annex D (informative) Minimum recommended physical properties of rubber material 41 Annex E (informative) Effect of inner-hole
15、diameter and second shape factor on shear properties 43 Annex F (informative) Determination of compressive properties of elastomeric isolators 46 Annex G (informative) Determination of shear properties of elastomeric isolators 49 Annex H (informative) Method of predicting buckling limit at large def
16、ormations 54 Annex I (informative) Design of fixing bolts and flanges . 60 Bibliography . 63 BS ISO 22762-3:2005vForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards
17、 is normally carried out through ISO 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 p
18、art in the work. ISO collaborates closely 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
19、 prepare International Standards. Draft 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 t
20、hat some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 22762-3 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses). ISO 2
21、2762 consists of the following parts, 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 22762-3:2005vi Introduction This International Standard contains two p
22、arts related to specifications for isolators 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 de
23、sign of bridge isolators, Part 2 and the 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 br
24、idges are mainly rectangular in shape 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 perfo
25、rm on a daily basis to accommodate length 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 basi
26、s as well as earthquakes, while isolators 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
27、the requirements of the structure. BS ISO 22762-3:20051Elastomeric seismic-protection isolators Part 3: Applications for buildings Specifications 1 Scope ISO 22762 applies to elastomeric seismic isolators used to provide buildings or bridges with protection from earthquake damage. The isolators cove
28、red consist of alternate elastomer layers and reinforcing steel plates. 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 tra
29、nsmission of energy from the ground into the structure at the isolation frequency. This part of ISO 22762 specifies the requirements for elastomeric seismic isolators used for buildings and the requirements for the rubber material used in the manufacture of such isolators. The specification covers r
30、equirements, design rules, manufacturing tolerances, marking and labelling and test methods for elastomeric isolators. Some items of classification and some requirements need to be confirmed before production and these should be reviewed using the list given in Annex B. 2 Normative references The fo
31、llowing referenced 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 630, Structural steels Plates, wide flats, bars, se
32、ctions and profiles ISO 1052, Steels for general engineering purposes ISO 1629, Rubber and latices Nomenclature ISO 3302-1, Rubber Tolerances for products Part 1: Dimensional tolerances ISO 22762-1:2005, Elastomeric seismic-protection isolators Part 1: Test methods BS ISO 22762-3:20052 3 Terms and d
33、efinitions For the purposes of this document, the following terms 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 compressive-shear loading 3.3 compressive prope
34、rties of elastomeric isolator compressive stiffness (vK ) for all 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
35、 inner rubber and reinforcing steel plates before or after curing 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 l
36、ong-term compressive force on the elastomeric isolator imposed by the structure 3.7 effective loaded area area sustaining vertical load in elastomeric isolators, which corresponds to the area of reinforcing steel plates 3.8 effective width rectangular elastomeric isolator the smaller of the two side
37、 lengths of inner rubber to which direction shear 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 isolato
38、rs include high-damping rubber bearings, linear 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
39、 high-damping properties obtained by special compounding of the rubber and the use of additives BS ISO 22762-3:200533.12 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
40、 plugs press fitted into a hole or holes of the isolator body to achieve 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 r
41、elatively low damping may be treated as an LNR bearing for the purposes 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 manufac
42、turer for the isolator, including the safety margin 3.17 roll-out 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 3.19 second shape factor circular
43、elastomeric isolator ratio of the diameter of 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 comprehens
44、ive term that covers characteristics determined 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 d
45、esigning of structure for base-isolated bridges or buildings and is responsible for specifying the requirements for elastomeric isolators BS ISO 22762-3:20054 3.22 type test test for verification either of material properties and isolator performances during development of the product or that projec
46、t design parameters are achieved 3.23 ultimate properties properties at either buckling, breaking, or roll-out of an isolator under compressive-shear loading 3.24 ultimate property diagram UPD diagram giving the interaction curve of compressive stress and buckling strain or breaking strain of an ela
47、stomeric 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 elastomeric isolator excluding cover rubber portion bA effective area of bolt
48、eA overlap area between the top and bottom elastomer area of isolator sheared under non-seismic displacement freeA load-free area of isolator loadA loaded area of isolator pA area of the lead plug for a lead rubber bearing a side length of square elastomeric isolator excluding cover rubber thickness
49、, or length in longitudinal direction of rectangular isolator excluding cover rubber thickness ealength of the shorter side of the rectangular isolator including cover rubber thickness a length in longitudinal direction of the rectangular isolator, including cover rubber thickness B effective width for bending of flange b length in transverse direction of the rectangular isolator, excluding cover rubber thickness b length in transverse direction of the rectangular isolator, including cover r
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