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BS EN 14067-4:2024 – TC

BS EN 14067-4:2024 – TC

$258.95

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

Published By Publication Date Number of Pages
BSI 2024 147
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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
85 undefined
91 1 Scope
2 Normative references
3 Terms and definitions
92 4 Symbols
98 5 Requirements on locomotives and passenger rolling stock
5.1 Limitation of pressure variations beside the track
5.1.1 General
99 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
100 5.1.3 Full conformity assessment
5.1.4 Simplified conformity assessment
102 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
104 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
105 5.2.4 Simplified conformity assessment
107 5.3 Aerodynamic loads in the track bed
5.4 Aerodynamically induced ballast projection
5.5 Running resistance
108 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
109 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
112 7.1.2 Pressure variations in the pressure field (reference case)
7.1.2.1 Full-scale tests
115 7.1.2.2 Reduced-scale moving model tests
116 7.1.2.3 Reduced-scale static model tests
117 7.1.2.4 Numerical simulations
121 7.1.3 Pressure variations on surfaces parallel to the track
7.1.3.1 Full-scale tests
122 7.1.3.2 Reduced-scale moving model tests
123 7.1.3.3 Reduced-scale static model tests
7.1.3.4 Numerical simulation
7.1.3.5 Predictive formulae
129 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
132 7.2.2.2 Reduced-scale tests
133 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
134 7.4 Assessment of running resistance
7.4.1 General
7.4.2 Full-scale tests
7.4.2.1 General
135 7.4.2.2 ‘Swing test’ – Coasting test at very low speed
138 7.4.2.3 Requirements for train hauling procedure
7.4.2.4 Requirements for coasting test procedure
142 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
143 A.3 Vehicle configuration and test conditions
A.4 Instrumentation and data acquisition
144 A.5 Data processing

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BS EN 14067-4:2024 - TC
$258.95