TB/T 3548-2019 English PDF (TBT3548-2019)

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TB/T 3548-2019: Strength design and test accreditation specification for rolling stock-General
TB/T 3548-2019
TB
RAILWAY INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 45.060.20
S 51
Partially replacing TB/T 1335-1996
Strength Design and Test Accreditation Specification
for Rolling Stock – General
ISSUED ON: APRIL 08, 2019
IMPLEMENTED ON: NOVEMBER 01, 2019
Issued by: National Railway Administration of the People’s Republic of
China
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 6
4 Coordinate System and Unit System ... 7
5 Classification of Rolling Stock ... 8
6 Structural Strength Requirements ... 9
7 Material Properties ... 24
8 Verification Procedures ... 24
9 Test Apparatus and Test Point Layout ... 26
Appendix A (Normative) Test Method of Structure Dynamic Strength ... 29
Appendix B (Informative) Commonly Used Materials and Mechanical Properties
of Rolling Stock ... 32
Appendix C (Normative) Strength Requirements of Main Structural Equipment
on the Vehicle ... 44
Bibliography ... 49
Strength Design and Test Accreditation Specification
for Rolling Stock – General
1 Scope
This Standard specifies the terms and definitions, coordinate system and unit system,
classification, structural strength requirements, material properties, verification
procedures, and test equipment and measurement point layouts for the strength
design and test of rolling stock.
This Standard is applicable to the strength design and test accreditation of rolling
stocks, EMUs, and passenger cars. Special rolling stocks and urban rail vehicles can
be implemented by reference (except for special test requirements).
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) is applicable to this document.
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room
Temperature
GB/T 4549 (all parts) Railway Vehicle Vocabulary
GB/T 32059 Fatigue Load Test Method for Windows, Doors of High Speed
Multiple Unit
TB/T 1451 Foreside Windscreen for Locomotives and Motor Units
TB/T 3094 Vestibule Diaphragm of Locomotive and Rolling Stock
TB/T 3107 Unit Combined Windows for Railway Passenger Car
TB/T 3108 Sliding Plug Door for Railway Passenger Car
TB/T 3263 Passenger Seat for Powered Car Train-set
TB/T 3266 General Technical Specifications for Doors of Locomotive
The integral welded parts that are used to connect the axle box and transmit the force
in the bogie; they are generally located between the primary suspension and the
secondary suspension.
NOTE: Rewrite GB/T 4549.2-2004, definition 3.1.
3.7 Exceptional load
Occasionally, the maximum load that does not affect the integrity of the rolling stock
and the normal operation.
NOTE: For example, the impact load that is generated by rolling stock during shunting, etc.
3.8 In-service load
A load that often occurs and does not affect the integrity and normal operation of the
rolling stock, but shall affect the fatigue performance of the rolling stock.
3.9 Connecting device for car body equipment
Fasteners for equipment installation on the car body and related local load-bearing
structures or installation structures.
NOTE: For example, traction transformer mounts, etc.
3.10 Connecting device for bogie frame equipment
Fasteners for equipment installation on the bogie frame and related local load-bearing
structure or installation structure.
NOTE: For example, the suspension base of the frame suspension traction motor.
3.11 Connecting device for axle-box equipment
Fasteners for equipment installation on the axle box and related local load-bearing
structure or installation structure.
NOTE: For example, speed sensor mounting bolts, etc.
4 Coordinate System and Unit System
4.1 Coordinate system
The coordinate system is shown in Figure 1. The longitudinal direction of the rolling
stock corresponds to the X-axis, the transverse direction corresponds to the Y-axis,
and the vertical direction corresponds to the Z-axis. Using the right-hand rule
control cars in relatively articulated power-concentrated EMUs are classified in this
category. Its structure type is identified as P.
5.5 Freight cars
The non-articulated railway vehicles used for the goods transportation are classified
into this category (excluding special freight cars such as long and large freight cars).
This group defines two structure types, and the corresponding type identifiers are as
follows:
a) Type F-I, for example: vehicles without shunting restrictions;
b) Type F-II, for example: vehicles that the hump shunting and push-off shunting
are not allowed.
6 Structural Strength Requirements
6.1 General requirements
6.1.1 Basic principles
6.1.1.1 When designing rolling stock and its parts, the necessary load-bearing capacity
shall be ensured. At the same time, the self-weight of rolling stock and its parts shall
be reduced as much as possible, and the overall bearing capacity of the structure shall
be fully utilized.
6.1.1.2 The capacity of the load-bearing members of the rolling stock without
permanent deformation and fracture shall be calculated and/or verified in accordance
with the verification procedures in Clause 8. The load-bearing components of rolling
stock shall be evaluated based on the following criteria:
a) It shall be able to withstand the maximum load during all operations, which is
defined as exceptional load in this Standard;
b) The operational load borne during the specified life span does not endanger the
safety of the structure.
6.1.1.3 The design of rolling stock shall ensure that the natural frequency of the car
body is different from the vibration frequency of the bogie suspension system, when it
is in use, to avoid resonance.
6.1.1.4 For newly designed structures of rolling stock, the rods, plates, or shells that
bear the compressive load shall be checked for stability by calculation or test to avoid
structural failure due to loss of stability. The connection nodes of all load-bearing
members shall have sufficient rigidity, and the structure shall not be unstable. For more
strength tests and/or fatigue tests, in accordance with the corresponding strength test
standards.
6.1.2.5 The line dynamic strength test shall be carried out in accordance with the
requirements of Clause 8 after the rolling stock is finished and before being put into
use. See Appendix A for the line dynamic strength test and evaluation method.
6.1.2.6 The weight of rolling stock shall be calculated in accordance with the provisions
of TB/T 3342.
6.1.3 Load conditions
Load conditions generally include exceptional load conditions and operating load
conditions; and each load condition may include one or more independent loads.
Depending on the different structures, all or part of the load conditions can be included
in the calculation and/or test.
During analysis and testing, the load shall be applied at an accurate position
corresponding to the actual situation in the application.
If it can be proved that different design loads or load conditions are more appropriate
than those specified in this Standard, they shall be used in preference. For special
operating conditions or design features, if technical demonstration can be provided,
lower ...