EN 13749:2021

Railway applications - Wheelsets and bogies - Method of specifying the structural requirements of bogie frames

This document specifies the method to be followed to achieve a satisfactory design of bogie frames and includes design procedures, assessment methods, verification and manufacturing quality requirements. It is limited to the structural requirements of bogie frames including bolsters and axlebox housings. For the purpose of this document, these terms are taken to include all functional attachments, e.g. damper brackets.

Bahnanwendungen - Radsätze und Drehgestelle - Festlegungsverfahren für Festigkeitsanforderungen an Drehgestellrahmen

Dieses Dokument legt das Verfahren fest, das für eine zufriedenstellende Konstruktion von Drehgestellrahmen anzuwenden ist, einschließlich Entwicklungsverfahren, Bewertungsverfahren, Prüfung und Qualitätsanforderungen für die Herstellung. Es beschränkt sich auf die Festigkeitsanforderungen von Drehgestellrahmen einschließlich Traversen und Radsatzlagergehäusen. Für die Anwendung dieses Dokumentes beinhalten diese Begriffe alle funktionellen Zusatzeinrichtungen, z. B. Dämpferhalter.

Applications ferroviaires - Essieux montés et bogies - Méthode pour spécifier les exigences en matière de résistance des structures de châssis de bogie

Le présent document spécifie la méthode à suivre pour réaliser une conception satisfaisante des châssis de bogie et comprend les modes opératoires de conception, les méthodes d'évaluation, ainsi que les exigences relatives à la vérification et à la qualité de fabrication. Il se limite aux exigences structurelles des châssis de bogie, incluant les traverses de charge et les corps de boîtes d'essieu. Pour les besoins du présent document, ces termes sont considérés comme comprenant toutes les fixations fonctionnelles, comme les supports d'amortisseurs par exemple.

Železniške naprave - Kolesne dvojice in podstavni vozički - Metoda za specificiranje konstrukcijskih zahtev okvirjev podstavnih vozičkov

General Information

• Status: Published
• Publication Date: 29-Jun-2021
• Withdrawal Date: 29-Sep-2021
• ICS: 45.040 - Materials and components for railway engineering
• Technical Committee: CEN/TC 256 - Railway applications
• Drafting Committee: CEN/TC 256/SC 2/WG 13 - Bogie frames
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 24-Mar-2021
• Due Date: 29-Jun-2021
• Completion Date: 24-Mar-2021
• Directive: 2008/57/EC - Directive 2008/57/EC of the European Parliament and of the Council of 17 June 2008 on the interoperability of the rail system within the Community (Recast)
• Directive: 2016/797/EU - Directive (EU) 2016/797 of the European Parliament and of the Council of 11 May 2016 on the interoperability of the rail system within the European Union (Text with EEA relevance)
• Directive: 93/38/EEC - Procurement procedures of entities operating in the water, energy, transport and telecommunications sectors
• Mandate: M/024 - Mandate to CEN/CENELEC/ETSI for programming and standardization in the field of railway equipment
• Mandate: M/483 - Mandate for programming and standardisation addressed to the European standardisation bodies under directive 2008/57/EC in the field of the interoperability of the rail system within the European Union
• Ref Project: SIST EN 13749:2021 - Railway applications - Wheelsets and bogies - Method of specifying the structural requirements of bogie frames

Relations

• Replaces: EN 13749:2011 - Railway applications - Wheelsets and bogies - Method of specifying the structural requirements of bogie frames
• Effective Date: 31-Mar-2021
• Amended By: EN 13749:2021/prA1 - Railway applications - Wheelsets and bogies - Method of specifying the structural requirements of bogie frames
• Effective Date: 29-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 13749:2021
01-maj-2021
Nadomešča:
SIST EN 13749:2011
Železniške naprave - Kolesne dvojice in podstavni vozički - Metoda za
specificiranje konstrukcijskih zahtev okvirjev podstavnih vozičkov

Railway applications - Wheelsets and bogies - Method of specifying the structural

requirements of bogie frames
Bahnanwendungen - Radsätze und Drehgestelle - Festlegungsverfahren für
Festigkeitsanforderungen an Drehgestellrahmen

Applications ferroviaires - Essieux montés et bogies - Méthode de spécification pour les

exigences structurelles des châssis de bogie
Ta slovenski standard je istoveten z: EN 13749:2021
ICS:
45.040 Materiali in deli za železniško Materials and components
tehniko for railway engineering
SIST EN 13749:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 13749:2021
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SIST EN 13749:2021
EN 13749
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2021
EUROPÄISCHE NORM
ICS 45.040 Supersedes EN 13749:2011
English Version
Railway applications - Wheelsets and bogies - Method of
specifying the structural requirements of bogie frames

Applications ferroviaires - Essieux montés et bogies - Bahnanwendungen - Radsätze und Drehgestelle -

Méthode pour spécifier les exigences en matière de Festlegungsverfahren für Festigkeitsanforderungen an

résistance des structures de châssis de bogie Drehgestellrahmen
This European Standard was approved by CEN on 15 February 2021.

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 CEN-CENELEC 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 CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13749:2021 E

worldwide for CEN national Members.
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SIST EN 13749:2021
EN 13749:2021 (E)
Contents

European foreword ............................................................................................................................................ 5

1 Scope .......................................................................................................................................................... 6

2 Normative references .......................................................................................................................... 6

3 Terms and definitions ......................................................................................................................... 6

4 Technical specification ....................................................................................................................... 8

4.1 Scope .......................................................................................................................................................... 8

4.2 General requirements ......................................................................................................................... 8

4.3 Design load cases .................................................................................................................................. 8

4.4 Vehicle conditions and interfaces ................................................................................................... 9

4.5 Particular requirements .................................................................................................................... 9

5 Verification of the design data ......................................................................................................... 9

6 Validation and acceptance of the design ...................................................................................... 9

6.1 General...................................................................................................................................................... 9

6.2 The validation plan ............................................................................................................................ 10

6.2.1 Content .................................................................................................................................................... 10

6.2.2 Structural analysis .............................................................................................................................. 11

6.2.3 Static tests .............................................................................................................................................. 12

6.2.4 Fatigue tests .......................................................................................................................................... 12

6.2.5 Track tests ............................................................................................................................................. 13

7 Quality requirements ........................................................................................................................ 14

Annex A (informative) Symbols and units used in the informative annexes ............................. 15

A.1 Forces ...................................................................................................................................................... 15

A.2 Accelerations ........................................................................................................................................ 16

A.3 Masses ..................................................................................................................................................... 16

A.4 Other symbols and units .................................................................................................................. 17

A.5 Coordinate system .............................................................................................................................. 17

A.6 Bogie classification ............................................................................................................................. 19

Annex B (informative) Load cases ............................................................................................................. 20

Annex C (informative) Loads due to bogie running ............................................................................. 22

C.1 General.................................................................................................................................................... 22

C.2 Examples of loads for bogies of passenger rolling stock - categories B-I and B-II ..... 23

C.2.1 Exceptional loads ................................................................................................................................ 23

C.2.2 Normal service loads ......................................................................................................................... 24

C.3 Examples of loads for freight bogies with a central pivot and two sidebearers -

category B-V .......................................................................................................................................... 24

C.3.1 Bogie types ............................................................................................................................................ 24

C.3.2 Relationship of vertical forces ....................................................................................................... 24

C.3.3 Exceptional loads ................................................................................................................................ 25

C.3.4 Normal service loads ......................................................................................................................... 26

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SIST EN 13749:2021
EN 13749:2021 (E)

C.4 Examples of loads for bogies of locomotives (with two bogies) - category B-VII ........ 27

C.4.1 Exceptional loads ................................................................................................................................ 27

C.4.2 Normal service loads ......................................................................................................................... 28

C.5 Examples of loads for bogies of metro, rapid transit, light rail vehicles and trams -

categories B-III and B-IV .................................................................................................................. 28

C.5.1 Application ............................................................................................................................................ 28

C.5.2 Load cases .............................................................................................................................................. 28

C.5.3 General expressions for the basic load cases ........................................................................... 29

Annex D (informative) Loads due to components attached to the bogie frame........................ 31

D.1 General ................................................................................................................................................... 31

D.2 Component inertia loads .................................................................................................................. 31

D.2.1 Derivation .............................................................................................................................................. 31

D.2.2 Design accelerations for equipment attached to the bogie frame .................................... 32

D.2.3 Design accelerations for equipment attached to the axlebox ............................................ 32

D.3 Loads resulting from viscous dampers ....................................................................................... 32

D.4 Loads resulting from braking ......................................................................................................... 33

D.5 Loads resulting from traction motors ......................................................................................... 33

D.6 Forces applied on anti-roll systems ............................................................................................. 33

Annex E (informative) Analysis methods and acceptance criteria ................................................ 34

E.1 General ................................................................................................................................................... 34

E.2 Loads ....................................................................................................................................................... 34

E.3 Analysis and acceptance .................................................................................................................. 34

E.4 Structural acceptance criteria ....................................................................................................... 34

E.4.1 Principle ................................................................................................................................................. 34

E.4.2 Utilization .............................................................................................................................................. 35

E.4.3 Safety factor .......................................................................................................................................... 35

E.4.4 Material strength ................................................................................................................................ 36

Annex F (informative) Examples of static test programmes ............................................................ 41

F.1 General ................................................................................................................................................... 41

F.2 Static test programme for bogies of passenger rolling stock with body supported

directly to the sideframe (categories B-I and B-II) ................................................................. 42

F.2.1 Tests under exceptional loads ....................................................................................................... 42

F.2.2 Tests under normal service loads ................................................................................................ 42

F.3 Static test programme for bogies with central pivot and two sidebearers (category B-

V)............................................................................................................................................................... 44

F.3.1 Bogie types ............................................................................................................................................ 44

F.3.2 Tests under exceptional loads ....................................................................................................... 44

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SIST EN 13749:2021
EN 13749:2021 (E)

F.3.3 Tests under normal service loads ................................................................................................. 44

F.4 Static test programme for bogies of locomotives .................................................................... 46

F.5 Static test programme for bogies of light rail vehicles and trams .................................... 46

F.5.1 General.................................................................................................................................................... 46

F.5.2 Tests under exceptional loads ....................................................................................................... 46

F.5.3 Tests under normal service loads ................................................................................................. 47

Annex G (informative) Examples of fatigue test programmes ......................................................... 48

G.1 General.................................................................................................................................................... 48

G.2 Fatigue test programme for bogies with the body supported directly on the

sideframes (categories B-I and B-II) ............................................................................................ 49

G.3 Fatigue test programme for a freight bogie with a central pivot and two sidebearers

(category B-V) ...................................................................................................................................... 52

G.3.1 General.................................................................................................................................................... 52

G.3.2 Vertical loads ........................................................................................................................................ 52

G.3.3 Transverse loads ................................................................................................................................. 52

G.4 Fatigue test programme for locomotive bogies (category B-VII) ...................................... 54

G.5 Fatigue test programme for bogies of light rail vehicles and trams (category B-IV) . 54

Annex ZA (informative) Relationship between this European Standard and the Essential

Requirements of EU Directive 2016/797/EU aimed to be covered .................................. 55

Bibliography ....................................................................................................................................................... 57

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SIST EN 13749:2021
EN 13749:2021 (E)
European foreword

This document (EN 13749:2021) has been prepared by Technical Committee 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 September 2021, and conflicting national standards shall

be withdrawn at the latest by September 2021.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 13749:2011.

The general scope and requirements of EN 13749 are unaltered by this revision. Changes were necessary

to mainly correct errors in some formulae and textural corrections in line with the CEN rules.

Informative annexes in this standard give additional information that is not mandatory but intended to

assist the understanding or use of the document.

NOTE Informative annexes sometimes contain optional requirements. For instance, a test method that is

optional, or expressed as an example, contains requirements but there is no need to comply with these requirements

to claim compliance with the document.

This document has been prepared under a standardization request given to CEN by the European

Commission and the European Free Trade Association, and supports essential requirements of EU

Directive 2016/797/EC.

For relationship with EU Directive 2016/797/EC, see informative Annex ZA, which is an integral part of

this document.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,

Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,

Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North

Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United

Kingdom.
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SIST EN 13749:2021
EN 13749:2021 (E)
1 Scope

This document specifies the method to be followed to achieve a satisfactory design of bogie frames and

includes design procedures, assessment methods, verification and manufacturing quality requirements.

It is limited to the structural requirements of bogie frames including bolsters and axlebox housings. For

the purpose of this document, these terms are taken to include all functional attachments, e.g. damper

brackets.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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.

EN 15085-1:2007+A1:2013, Railway applications - Welding of railway vehicles and components - Part 1:

General

EN 15085-2:2007, Railway applications - Welding of railway vehicles and components - Part 2: Quality

requirements and certification of welding manufacturer

EN 15085-3:2007, Railway applications - Welding of railway vehicles and components - Part 3: Design

requirements

EN 15085-4:2007, Railway applications - Welding of railway vehicles and components - Part 4: Production

requirements

EN 15085-5:2007, Railway applications - Welding of railway vehicles and components - Part 5: Inspection,

testing and documentation
EN 15663:2017+A1:2018, Railway applications - Vehicle reference masses
EN 15827:2011, Railway applications - Requirements for bogies and running gears
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 15827:2011 and the following

apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp

NOTE Annex A identifies the symbols, units, coordinate system and bogie categories used in the informative

annexes to this European standard.
3.1
axlebox
assembly comprising the box housing, rolling bearings, sealing and grease
3.2
bogie frame

load-bearing structure generally located between primary and secondary suspension

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SIST EN 13749:2021
EN 13749:2021 (E)
3.3
bolster
transverse load-bearing structure between vehicle body and bogie frame
3.4
static force
force which is constant with time
Note 1 to entry: Force due to gravity is an example of static force.
3.5
quasi-static force
force, which changes with time at a rate which does not cause dynamic excitation
Note 1 to entry: Quasi-static force might remain constant for limited periods.
3.6
dynamic force

transient, impulsive or continuous force, uniform or random, that changes with time at a rate that causes

dynamic excitation
3.7
load case

set of loads or combinations of loads that represents a loading condition to which the structure or

component is subjected
3.8
exceptional load case

extreme load case representing the maximum load at which full serviceability is to be maintained and

used for assessment against static material properties
3.9
fatigue load case
repetitive load case used for assessment against fatigue strength
3.10
safety factor

factor applied during the strength assessment which makes an allowance for a combination of the

uncertainties and the safety criticality
3.11
sideframe
longitudinal structural member of the bogie frame
3.12
primary suspension

suspension system consisting of the resilient elements (and associated connecting and locating parts)

generally located between the axlebox and bogie frame
3.13
secondary suspension

suspension system consisting of the resilient elements (and associated connecting and locating parts)

generally located between the bogie frame and vehicle body or bolster
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SIST EN 13749:2021
EN 13749:2021 (E)
3.14
track testing

performing of tests under expected service conditions, on railway infrastructure that represents the

actual operating environment, and monitoring and recording the responses
3.15
validation

process of demonstrating by analysis and/or test that the system under consideration meets in all

respects the technical specification, including requirements due to regulations, for that system

3.16
verification

process of demonstrating by comparison or testing that an analytical result or estimated value is of an

acceptable level of accuracy
4 Technical specification
4.1 Scope

The technical specification shall consist of all the information describing the functional requirements of

the bogie frame and the interfaces with associated components and assemblies. It shall also comprise, as

a minimum, the general requirements of use, the conditions associated with the vehicle equipped with

the bogies, the operating characteristics, the conditions associated with maintenance and any other

particular requirements.

The technical specification shall also identify all appropriate mandatory regulations and define the parts

of the validation and acceptance procedure (Clause 6) and the quality requirements (Clause 7), which are

specifically required, and the way in which evidence to show that the requirements have been met is to

be provided.

NOTE If the customer is unable to define the technical specification completely the supplier usually proposes

a technical specification and submits it to the customer (and the approval authority where relevant) for agreement.

4.2 General requirements

The technical specification shall indicate the type of bogie required in terms of its use. It shall also indicate

the intended life of the bogie, its average annual distance run and its total distance run and all the

information that is applicable to a bogie frame associated with the Essential Requirements of a TSI as

indicated in EN 15827:2011. Information that is particularly relevant to bogie frame design is indicated

in the following clauses.
4.3 Design load cases

The technical specification for the bogie frame shall consist primarily of the load cases required for the

design of the bogie as specified in EN 15827:2011, plus any additional load cases required by that

standard or arising from the application. The load cases shall be based on the vehicle mass states given

in EN 15663:2017+A1:2018. However, for some applications and fatigue assessment methods it will be

necessary to use additional vehicle loading conditions (expressed as functions of the cases in

EN 15663:2017+A1:2018) to obtain an accurate description of the vehicle payload spectrum for design

purposes.

The development of the design load cases is discussed in Annex B and examples of design load cases

associated with bogie running and due to the attachment of equipment are given in Annexes C and D

respectively.
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SIST EN 13749:2021
EN 13749:2021 (E)

NOTE If the endurance limit approach to fatigue strength assessment is to be used, the data on the number of

events is not required and only the extreme repetitive load conditions need to be specified.

4.4 Vehicle conditions and interfaces

The technical specification shall also include the following information from the requirements of

EN 15827:2011 interpreted for applicability to the bogie frame:
— vehicle body interfaces and clearances;
— gauge reference profile and bogie movement envelope;
— suspension geometry and attachments;
— interfaces to traction and braking systems and all other attached equipment;
— electrical and pneumatic system connections;
— environmental requirements;
— maintenance requirements.
4.5 Particular requirements

The technical specification shall indicate any particular requirements related to the bogie frame that are

not covered by the above clauses, for example, operating conditions, materials, types of construction and

methods of assembly (e.g. treatment of welds, shot peening).
5 Verification of the design data

All necessary means (e.g. analysis, drawings, tests) shall be used to carry out the design.

The information supporting the design of the bogie frame shall be verified by the documents specified in

the technical specification and those required by applicable standards and regulations which permit:

— the bogie frames to be designed and manufactured in accordance with the requirements of the

technical specification, EN 15827:2011 and this document;

— all the checks considered necessary for the validation and acceptance to be carried out.

6 Validation and acceptance of the design
6.1 General

The aim of the validation plan is to prove that the design of the bogie frame fulfils the conditions specified

in the technical specification. In addition, it shall show that the behaviour of the bogie frame, constructed

according to the design, will give satisfactory service without the occurrence of defects such as

catastrophic rupture, permanent deformation and fatigue cracks. It shall further demonstrate that there

is no adverse influence on the associated bogie components or sub-assemblies.

The validation plan shall be compatible with that for the bogie as a whole as specified in EN 15827:2011

and in particular the requirements of the following clauses of this European standard.

Acceptance of the product will normally be dependent on a satisfactory completion of the validation plan

but may contain other conditions outside the scope of this European standard.
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SIST EN 13749:2021
EN 13749:2021 (E)

The technical specification shall include guidance on how the bogie design is to be validated (including

conformance with any applicable regulations) and shall state all the parameters that are necessary for

the application of the different parts of the procedure. These parameters shall be specified in three stages:

— the validation plan (e.g. combination of load cases for analysis and static tests, programmes for

fatigue tests, routes for track tests);
— the values of the different load cases;

— the acceptance criteria (treatment of measured or calculated values, limiting stresses, criteria for

completion of fatigue tests, etc.).

Clause 6.2 specifies which parts of the validation plan should be included in any particular case.

NOTE In order that the acceptance procedure is completely specified, the supplier identifies the methods of

demonstrating conformance to the requirements if they are not incorporated into the technical sp

...