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BS EN 14067-4:2024

BS EN 14067-4:2024

$198.66

Railway applications. Aerodynamics – Requirements and assessment procedures for aerodynamics on open track

Published By Publication Date Number of Pages
BSI 2024 64
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This document establishes requirements, test procedures, assessment methods and acceptance criteria for operating rolling stock in open track. For pressure variations and slipstream effects beside the track, requirements and assessment methods are provided. For running resistance, assessment methods are addressed in this document. Load cases on infrastructure components due to train-induced pressure variations and slipstream effects are addressed in this document. For ballasted track test set-ups for ballast projection assessment are proposed. The requirements only apply to rolling stock of the heavy rail system with maximum train speeds above 160 km/h and not to other rail systems. The document is applicable to all rolling stock and infrastructure in open air with nominal track gauges of 1 435 mm to 1 668 mm inclusive.

PDF Catalog

PDF Pages PDF Title
2 undefined
8 1 Scope
2 Normative references
3 Terms and definitions
9 4 Symbols
15 5 Requirements on locomotives and passenger rolling stock
5.1 Limitation of pressure variations beside the track
5.1.1 General
16 5.1.2 Requirements
5.1.2.1 Reference case
5.1.2.2 Fixed or pre-defined train compositions
5.1.2.3 Vehicle capable of running in leading position
5.1.2.4 Other rolling stock
17 5.1.3 Full conformity assessment
5.1.4 Simplified conformity assessment
19 5.2 Limitation of slipstream effects beside the track
5.2.1 General
5.2.2 Requirements
5.2.2.1 Reference cases
5.2.2.2 Fixed or pre-defined train compositions
21 5.2.2.3 Rail vehicle capable of running in leading position
5.2.2.4 Other rail vehicles
5.2.3 Full conformity assessment
22 5.2.4 Simplified conformity assessment
24 5.3 Aerodynamic loads in the track bed
5.4 Aerodynamically induced ballast projection
5.5 Running resistance
25 6 Requirements on infrastructure
6.1 Train-induced pressure loads acting on structures parallel to the track
6.1.1 General
6.1.2 Requirements
6.1.3 Conformity assessment
6.2 Train-induced air speeds acting on infrastructure components beside the track
6.3 Train-induced aerodynamic loads in the track bed
6.4 Train-induced air speed acting on people beside the track
26 6.5 Aerodynamically induced ballast projection
7 Methods and test procedures
7.1 Assessment of train-induced pressure variations beside the track
7.1.1 General
29 7.1.2 Pressure variations in the pressure field (reference case)
7.1.2.1 Full-scale tests
32 7.1.2.2 Reduced-scale moving model tests
33 7.1.2.3 Reduced-scale static model tests
34 7.1.2.4 Numerical simulations
38 7.1.3 Pressure variations on surfaces parallel to the track
7.1.3.1 Full-scale tests
39 7.1.3.2 Reduced-scale moving model tests
40 7.1.3.3 Reduced-scale static model tests
7.1.3.4 Numerical simulation
7.1.3.5 Predictive formulae
46 7.1.4 Effect of wind on loads caused by the train
7.2 Assessment of train-induced air flow beside the track
7.2.1 General
7.2.2 Slipstream effects on persons beside the track (reference case)
7.2.2.1 Full-scale tests
49 7.2.2.2 Reduced-scale tests
50 7.2.2.3 Numerical simulations
7.2.2.4 Predictive formulae
7.2.3 Slipstream effects on objects beside the track
7.3 Assessment of train-induced aerodynamic loads in the track bed
51 7.4 Assessment of running resistance
7.4.1 General
7.4.2 Full-scale tests
7.4.2.1 General
52 7.4.2.2 ‘Swing test’ – Coasting test at very low speed
55 7.4.2.3 Requirements for train hauling procedure
7.4.2.4 Requirements for coasting test procedure
59 Annex A (informative)Procedure for full-scale tests regarding train-induced air flow in the track bed
A.1 General
A.2 Track set-up
60 A.3 Vehicle configuration and test conditions
A.4 Instrumentation and data acquisition
61 A.5 Data processing

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BS EN 14067-4:2024
$198.66