BS EN 13146-7-2002 铁路设施.轨道.紧固系统的试验方法.紧固力的测定

BRITISH STANDARD
BS EN 7 November 2002
? BSI 7 November 2002
ISBN 0 580 40705 5
National foreword
This British Standard is the official English language version of
EN 13146-7:2002.
The UK participation in its preparation was entrusted to Technical Committee
RAE/2, Railway track components, which has the responsibility to:
A list of organizations represented on this committee can be obtained on
request to its secretary.
Cross-references
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pages 2 to 10, an inside back cover and a back cover.
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Amendments issued since publication
Amd. No. Date Comments
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EUROPEAN STANDARD
NORME EUROP?ENNE
EUROP?ISCHE NORM
E N 1 3 1 4 6 -7
October 2002
ICS 93.100
English version
Railway applications - Track - Test methods for fastening
systems - Part 7: Determination of clamping force
Applications ferroviaires - Voie - Méthodes d'essai pour les
systèmes de fixation - Partie 7: Détermination de l'effort
d'application au patin du rail
Bahnanwendungen - Oberbau - Prüfverfahren für
Schienenbefestigungssysteme - Teil 7: Bestimmung der
Spannkraft
This European Standard was approved by CEN on 9 September 2002.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMI T? EUROP?EN DE NORMALI SATI ON
EUROP?I SCHES KOMI TEE F?R NORMUNG
M a n a g e m e n t C e n tr e : r u e d e S ta s s a r t, 3 6 B -1 0 5 0 B r u s s e ls
? 2002 CEN All rights of exploitation in any form and by any means reserved
worldwide for CEN national Members.
Ref. No. EN 13146-7:2002 E
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C o n te n ts
F o r e w o r d ......................................................................................................................................................................3
1 S c o p e ..............................................................................................................................................................4
2 N o r m a tiv e r e fe r e n c e s ....................................................................................................................................4
3 T e r m s a n d d e fin itio n s , s y m b o ls a n d a b b r e v ia tio n s ...................................................................................4
3 .1 T e r m s a n d d e fin itio n s ....................................................................................................................................4
3 .2 S y m b o ls a n d a b b r e v ia tio n s ..........................................................................................................................4
4 P r in c ip le ..........................................................................................................................................................4
5 A p p a r a tu s .......................................................................................................................................................4
5 .1 R a il...................................................................................................................................................................4
5 .2 L o a d in g d e v ic e ...............................................................................................................................................5
5 .3 L o a d d is p la c e m e n t m e a s u r in g a n d r e c o r d in g in s tr u m e n ts ......................................................................5
5 .4 C a lib r a tio n ......................................................................................................................................................5
5 .5 S te e l s h im s .....................................................................................................................................................5
6 T e s t s p e c im e n s ..............................................................................................................................................5
6 .1 S le e p e r , b e a r e r o r c o n c r e te b lo c k ................................................................................................................5
6 .2 F a s te n in g c o m p o n e n ts ..................................................................................................................................5
7 R e fe r e n c e p r o c e d u r e .....................................................................................................................................5
7 .1 P r e p a r a tio n fo r te s t ........................................................................................................................................5
7 .2 L o a d in g a n d m e a s u r e m e n t fo r a s s e m b lie s in c o r p o r a tin g a r a il p a d ........................................................5
7 .3 L o a d in g a n d m e a s u r e m e n t fo r a s s e m b lie s n o t in c o r p o r a tin g a r a il p a d .................................................6
8 A lte r n a tiv e p r o c e d u r e ....................................................................................................................................8
8 .1 P r e p a r a tio n fo r te s t ........................................................................................................................................8
8 .2 L o a d in g a n d m e a s u r e m e n t fo r a s s e m b lie s in c o r p o r a tin g a r a il p a d ........................................................8
8 .3 L o a d in g a n d m e a s u r e m e n t fo r a s s e m b lie s n o t in c o r p o r a tin g a r a il p a d ...............................................1 0
9 T e s t r e p o r t ....................................................................................................................................................1 0
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F o r e w o r d
This document (EN 13146-7:2002) has been prepared by Technical Committee CEN /TC 256 "Railway
applications", the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical text or
by endorsement, at the latest by April 2003, and conflicting national standards shall be withdrawn at the latest by
April 2003.
This document has been prepared under mandates (M/024
1
), M/275
2
)) given to CEN by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
This series of European Standards EN 13146 "Railway applications — Track — Test methods for fastening
systems" consists of the following Parts:
 Part 1 : Determination of longitudinal rail restraint.
 Part 2 : Determination of torsional resistance.
 Part 3 : Determination of attenuation of impact loads.
 Part 4 : Effect of repeated loading.
 Part 5 : Determination of electrical resistance.
 Part 6 : Effect of severe environmental conditions.
 Part 7 : Determination of clamping force.
 Part 8 : In service testing.
These support the requirements in the series EN 13481 Railway applications — Track — Performance
requirements for fastening systems — Parts 1 to 7.
According 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, Portugal, Spain,
Sweden, Switzerland and the United Kingdom.
1
) Railway equipment.
2
) Standardization in the field of Railway Equipment on the Interoperability of the Trans-European High-Speed Rail System.
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1 S c o p e
This Part of this European Standard specifies laboratory test procedures for measuring the clamping force exerted
by the fastening system on the foot of a rail. It is applicable to systems with and without baseplates on all types of
sleepers, bearers and elements of slab track.
These test procedures apply to a complete fastening assembly.
A reference procedure and an alternative procedure are included.
2 N o r m a tiv e r e fe r e n c e s
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 13481-1:2002, Railway applications — Track — Performance requirements for fastening systems —
Part : 1 Definitions.
3 T e r m s a n d d e fin itio n s , s y m b o ls a n d a b b r e v ia tio n s
3 .1 T e r m s a n d d e fin itio n s
For the purposes of this European Standard, the terms and definitions given in EN 13481-1:2002 apply.
3 .2 S y m b o ls a n d a b b r e v ia tio n s
For the purposes of this European Standard, the following symbols apply.
d vertical displacement of the sleeper relative to the rail, in mm;
m
s
mass of sleeper or part sleeper and fastening components fixed to it, used in the test, in kg;
m
f
mass of loading frame supported by the sleeper, in kg;
P vertical load applied to the sleeper, in kN;
P
0
vertical load at zero rail displacement which just counteracts the clamping force, in kN.
4 P r in c ip le
The clamping force for a complete rail fastening assembly is determined by measuring the force necessary to
separate the rail from the surface on which it is supported.
5 A p p a r a tu s
5 .1 R a il
A short length (approximately 0,5 m) of rail, of the section for which the fastening assembly under test is designed.
The rail shall be unlaminated and have no loose rust on the surface nor be polished on the foot by repeated testing.
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5 .2 L o a d in g d e v ic e
A device to apply a vertical load at a controlled rate of approximately 10 kN/min. For the reference procedure the
load is applied to the rail and for the alternative procedure the load is applied to a loading frame supported on the
sleeper.
5 .3 L o a d d is p la c e m e n t m e a s u r in g a n d r e c o r d in g in s tr u m e n ts
Instruments which measure the vertical displacement of the rail support (baseplate or sleeper) relative to the rail.
The recording instruments shall be capable of plotting load-displacement diagrams.
5 .4 C a lib r a tio n
The calibration of actuators and measuring instruments shall be verified with equipment having certified traceability
to European or International Standards using the International System of Units (SI).
5 .5 S te e l s h im s
Steel shims 25 mm x 25 mm x 0,25 mm, maximum thickness 0,30 mm.
6 T e s t s p e c im e n s
6 .1 S le e p e r , b e a r e r o r c o n c r e te b lo c k
A portion of a sleeper, bearer or concrete block whose centroid is approximately at the centre line of the rail seat or
baseplate support area. This is described as a sleeper in the test procedure.
6 .2 F a s te n in g c o m p o n e n ts
All fastening components, as used in track, including baseplates where incorporated.
7 R e fe r e n c e p r o c e d u r e
7 .1 P r e p a r a tio n fo r te s t
Fix the rail to the sleeper, with the baseplate if part of the assembly, using the fastening components assembled as
in track.
NOTE If a rail pad is used which is shaped to provide positive location in the assembly, the edges of the pad can be cut off
to simplify removal of the pad as described in 7.2. The portion of the pad under the rail should not be cut.
Clamp the portion of sleeper to the base of the test fixture. Set up the test arrangement as shown in Figure 1 to
permit a load P to be applied to the rail normal to the rail seat. Locate one displacement transducer at each of the
four corners of the rail seat to measure d. Zero the displacement transducers.
7 .2 L o a d in g a n d m e a s u r e m e n t fo r a s s e m b lie s in c o r p o r a tin g a r a il p a d
Apply an increasing tensile load P to the rail, ensuring that the rail base is kept parallel to the rail seat, until the pad
can just be moved. Remove the pad and decrease the load until the average of the displacement transducers is
zero. Record the load P and then reduce the load to approximately 0,9P. Whilst recording d (the average of the four
transducers) increase the load P at a rate not exceeding 10 kN/min until the load is 1,1P. From the load-
displacement diagram (see Figure 2) read off the value of P
0
at d = 0 which is taken as the clamping force. Repeat
the procedure twice more and calculate the mean clamping force.
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7 .3 L o a d in g a n d m e a s u r e m e n t fo r a s s e m b lie s n o t in c o r p o r a tin g a r a il p a d
Apply an increasing tensile load P to the rail until there is a clear space under the rail which is just sufficient to allow
insertion of four steel shims under the rail, one at each corner of the railse at. Reduce the load P to zero and then
reapply an increasing load until a value is reached at which it is just possible to move all the shims by hand. This
load is P
0
which is taken as the clamping force. Repeat the procedure twice more and calculate the mean clamping