BS ISO 2017-2-2008 Mechanical vibration and shock - Resilient mounting systems - Technical information to be exchanged for the application of vibration isolation associated with ra.pdf

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1、BRITISH STANDARDBS ISO 2017-2:2007Mechanical vibration and shock Resilient mounting systems Part 2: Technical information to be exchanged for the application of vibration isolation associated with railway systemsICS 17.160; 93.100g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g4

2、0g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS ISO 2017-2:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2008 BSI 2008ISBN 978 0 580 56263 1Na

3、tional forewordThis British Standard is the UK implementation of ISO 2017-2:2007. Together with BS ISO 2017-1:2005 it supersedes BS 6414:1983 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee GME/21, Mechanical vibration, shock and condition monitoring.

4、A list of organizations represented on this committee 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 immunity from

5、legal obligations.Amendments/corrigenda issued since publicationDate CommentsReference numberISO 2017-2:2007(E)INTERNATIONAL STANDARD ISO2017-2First edition2007-12-15Mechanical vibration and shock Resilient mounting systems Part 2: Technical information to be exchanged for the application of vibrati

6、on isolation associated with railway systems Vibrations et chocs mcaniques Systmes de montage rsilients Partie 2: Informations techniques changer pour lapplication disolation vibratoire associe aux chemins de fer BS ISO 2017-2:2007ii iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normativ

7、e references . 1 3 Terms and definitions. 2 4 Vibration of railway systems . 2 5 Purpose of vibration isolation (why isolate mechanical systems) 3 6 What is to be isolated. 4 6.1 Source isolation 4 6.2 Receiver isolation . 4 7 Applicability of vibration isolation (when to isolate structures or mecha

8、nical systems). 4 8 Measurement and evaluation of vibration conditions 5 9 Information for the choice of an isolation mounting system. 5 10 Information to be supplied by the railway system authority 6 11 Information to be supplied by the receiver producer and user . 7 11.1 Buildings 7 11.2 Sensitive

9、 equipment. 7 12 Information to be provided by the supplier of the isolation system . 8 12.1 Performance of isolation system 8 12.2 Physical data of the isolation system. 8 12.3 Dynamic behaviour. 9 12.4 Durability . 9 12.5 Environmental data. 9 12.6 Maintenance data 9 13 Guidelines for the validati

10、on of isolation performance 10 Bibliography . 11 BS ISO 2017-2:2007iv 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 techni

11、cal 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 closely w

12、ith 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. Draft Int

13、ernational 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 document m

14、ay be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 2017-2 was prepared by Technical Committee ISO/TC 108, Mechanical vibration, shock and condition monitoring. The first edition, together with ISO 2017-1:2005 cancels and replaces

15、ISO 2017:1982 which has been technically revised. ISO 2017 consists of the following parts, under the general title Mechanical vibration and shock Resilient mounting systems: Part 1: Technical information to be exchanged for the application of isolation systems Part 2: Technical information to be ex

16、changed for the application of vibration isolation associated with railway systems BS ISO 2017-2:2007vIntroduction This part of ISO 2017 is limited to consideration of resilient devices. Some suppliers of shock and vibration isolators (resilient mounts) have experience covering a wide variety of app

17、lications. In most instances, they are willing to use their background information for solving the users isolation problems. However, it is frequently difficult for the supplier to provide this service, because the customer, the user or the producer of vibration source or receiver has not furnished

18、sufficient information regarding the application. On the other hand, the user is sometimes handicapped in applying isolators properly because sufficient technical information is not furnished by the supplier. Consequently, the user will often conduct his own experimental evaluation of the isolator a

19、nd may unknowingly duplicate work already carried out by the supplier. In some cases of vibration source or receiver, the producer provides the isolating system. To do that he needs detailed information from the customer relating to his future application, site and environment. This part of ISO 2017

20、 is intended to serve as guide for the exchange of technical information regarding the application of isolation elements for vibrations and shocks generated by railway systems, between the customer, supplier of resilient devices and producer of vibration source or receiver as required for their prop

21、er application. For the purposes of this part of ISO 2017, a resilient device is defined as a flexible element or system used between an equipment item and its supporting structure to attenuate the transmission of shock or vibration from the railway systems to the structure. BS ISO 2017-2:2007blank1

22、Mechanical vibration and shock Resilient mounting systems Part 2: Technical information to be exchanged for the application of vibration isolation associated with railway systems 1 Scope This part of ISO 2017 establishes requirements to ensure appropriate exchange of information regarding the applic

23、ation of isolation for vibrations and shocks generated by railway systems. This part of ISO 2017 is applicable to the construction of new railway systems. It may also be applied to previously installed systems when the user wishes to solve a new vibration problem arising from railroad degradation, w

24、hen new environmental land use planning requirements are put in place, or when new vibration-sensitive land development occurs in proximity to existing railway systems. It applies to vibration problems encountered in a railway environment but does not address vibration problems within railway cars (

25、carriages) themselves. This part of ISO 2017 intends to give appropriate responses to questions highlighted by the producer and users (why, what, when and how to isolate mechanical systems). 2 Normative references The following referenced documents are indispensable for the application of this docum

26、ent. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2041, Mechanical vibration, shock and condition monitoring Vocabulary ISO 2631-2, Mechanical vibration and shock Evaluation of huma

27、n exposure to whole-body vibration Part 2: Vibration in buildings (1 Hz to 80 Hz) ISO 4866, Mechanical vibration and shock Vibration of buildings Guidelines for the measurement of vibrations and evaluation of their effects on buildings ISO 7626-1, Vibration and shock Experimental determination of me

28、chanical mobility Part 1: Basic definitions and transducers ISO 8569, Mechanical vibration and shock Measurement and evaluation of shock and vibration effects on sensitive equipment in buildings ISO 9688, Mechanical vibration and shock Analytical methods of assessing shock resistance of mechanical s

29、ystems Information exchange between suppliers and users of analyses BS ISO 2017-2:20072 ISO 10815, Mechanical vibration Measurement of vibration generated internally in railway tunnels by the passage of trains ISO 10846 (all parts), Acoustics and vibration Laboratory measurement of vibro-acoustic tr

30、ansfer properties of resilient elements ISO 14837-1, Mechanical vibration Ground-borne noise and vibration arising from rail systems Part 1: General guidance ISO 14964, Mechanical vibration and shock Vibration of stationary structures Specific requirements for quality management in measurement and e

31、valuation of vibration 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 2041, ISO 7626-1, ISO 9688, ISO 10846 and ISO 14837-1 and the following apply. 3.1 railway system all train, track and other elements of railway which generate or transmit vibrati

32、ons, either in open space or in tunnels 3.2 vibration receiver all structures or elements of structures responding to vibration energy emitted by an internal or external source 3.3 customer user or purchaser of a product (building, machine, etc.) 3.4 producer party constructing or manufacturing the

33、product that needs to be isolated from internal or external vibration and which the customer agrees to purchase 3.5 isolation supplier party who is responsible for providing and installing an isolation system that will meet the requirements to reduce vibration agreed upon with the customer who agree

34、s to purchase NOTE 1 In certain cases the producer and the supplier may be the same party. NOTE 2 Every one of the three main actors can mandate subcontractors to execute the work or to purchase elements. From a legal point of view the three stay responsible in case of failure of the project. 3.6 ba

35、se isolation item or support arrangements that secure a structure to its supporting ground or equipment to its supporting structure and provide protection from shock and/or vibration 4 Vibration of railway systems There are distinct mechanisms that give rise to ground vibration from the passage of t

36、rains. They are generally associated with train-track interaction. BS ISO 2017-2:20073The train is represented as a moving load. If the support stiffness did not vary along the track, a static load would then come on during the train passage. At train speeds below wave propagation speeds in the trac

37、k and soil, this would present essentially a standing load problem to be solved. However, in practice the rail is supported at intervals via rail track fasteners traditionally fixed to sleepers laid within ballast. The rail therefore provides varying support stiffness to the moving load. The static

38、load therefore appears and disappears at these discrete supports, the periodicity of which is a function of train speed, spacing between axles, and the spacing between the discrete supports. This loading is therefore often referred to as quasi-static, or parametric, as it is due to a change in param

39、eter, such as stiffness. Measurements of wayside vibration indicate peaks in the frequency spectrum that tie in with the sleeper passage and axle passage frequencies. The ground vibration that results from these discrete supports tends to cause peaks in the frequency spectrum below 80 Hz (train spee

40、d dependant), and is partly responsible for vibration that is felt at the wayside. Another mechanism relates to wheel and rail roughness, arising either from manufacturing tolerances or from in-service wear. On the wheel there are wheel flats that develop due to braking. The rail surface may exhibit

41、 corrugation. As the wheel traverses this irregular profile, the unsprung mass (wheel set) is accelerated, which produces forces. This roughness produces random vibration. There are devices for measuring the irregular rail profiles in the wavelength of 5 mm to 2,5 m. The data on rail roughness is re

42、ported as a random function. Another mechanism involves impacts due to the rails rail breaks or discontinuities in the rail due to joints, switches (points) and crossings. These latter mechanisms are dynamic effects and are largely responsible for the higher frequency ground vibration that is respon

43、sible for re-radiated structure-borne noise, which is usually the dominant issue with underground train sources. Other forces arise during acceleration and deceleration, or negotiation of curves in the track due to hunting as the bogie mechanism works. Impacts also excite vehicle dynamics such as bo

44、unce frequency, and bending modes of the coach. 5 Purpose of vibration isolation (why isolate mechanical systems) The purpose of vibration isolation is to reduce the vibrations and shocks felt by people, structures and other mechanical systems by taking action between the source and the receiver. In

45、 the case of railway systems the purpose may include the assurance of: a) the structural integrity of the buildings surrounding the railway systems; b) the comfort of people in temporary or permanent structures that may be subject to the vibration excitation; c) the functionality of sensitive equipm

46、ent in these structures; d) the correct operation of any existing isolated equipment; e) the conformity with legal requirements, if any. BS ISO 2017-2:20074 6 What is to be isolated 6.1 Source isolation The purpose in this case is the modification of the input at the source level. This involves the

47、train, the track, and track support. The vibrations spread by rail tracks are mainly generated by movement of the train and the contact between wheels and rails. In the long run, rail corrugation and deformation of wheels are almost unavoidable. The practicability, limitations, restrictions and cost

48、s of isolating at the source may be significant, so a great deal of maintenance may be required to control vibration due to degeneration of the contacting surfaces. The periodic grinding of rails in long track sections within sensitive areas may be expensive as is treatment of the wheels. Quite a nu

49、mber of vibration attenuation techniques have been developed which differ significantly in efficiency and costs. Rail and base plate pads mainly provide elasticity to the track as especially required in the case of a slab track system rather than reduce noise and vibration radiation. In this aspect, other systems can be expected to be more effective. 6.2 Receiver isolation If it is impossible to isolate the source, or, if the results of such isolation are not satisfactory, receiver isolation is applied. It may also be appropriate