BS EN 13230-6:2020
$198.66
Railway applications. Track. Concrete sleepers and bearers – Design
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 64 |
This document provides particular design guidance in the following areas:
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derivation of characteristic loads and test loads;
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calculation of characteristic and test bending moments.
The aim of this document is to give guidance for the preparation of all data to be given by the purchaser to the supplier in accordance with Parts 1 to 5 of EN 13230. It applies to gauges 1 000 mm, 1 435 mm, 1 668 mm as well as to all lengths of sleepers and bearers.
This document gives special criteria for the design of concrete sleepers and bearers as track components. The design methods in the Eurocode do not apply to these concrete elements.
All track parameters to be taken into account for the design of sleepers and bearers are detailed in this document. Information is given on these parameters so that they can be used as inputs for the design calculation process. It is the responsibility of the purchaser to calculate or determine all track parameters used in this document.
This document gives guidance for the design calculation process. It explains how experience and calculation can be combined to use design parameters.
This document gives examples of numerical data that can be used when applying Clauses 4 to 6 according to the state of the art.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 8 | 1 Scope 2 Normative references 3 Terms, definitions and symbols |
| 11 | 4 General requirements 4.1 General process for determination of bending moments 4.1.1 General 4.1.2 Empirical method |
| 12 | 4.1.3 Theoretical method |
| 13 | 4.1.4 Combined method 4.2 Crack formation in concrete sleepers or bearers 4.2.1 Cracks under rail seat |
| 14 | 4.2.2 Cracks at centre part (prestressed monoblock sleepers or bearers) 4.2.3 Cracks for tests for negative bending under rail seat or positive bending at centre part 4.3 Section design of sleeper 4.4 Durability of sleeper 5 Design parameters 5.1 Maintenance 5.1.1 Track and rolling stock quality |
| 15 | 5.1.2 Distribution of the vertical load in the longitudinal direction 5.1.3 Distribution of ballast reaction along the length of the sleeper 5.2 Track laying conditions 5.2.1 Mass of sleeper 5.2.2 Length of sleeper 5.2.3 Depth of sleeper 5.2.4 Track installation methods |
| 16 | 5.3 Track components design 5.3.1 Rail profile and sleeper spacing 5.3.2 Fastening system 5.3.2.1 Attenuation of impact loads by fastening system 5.3.2.2 Vertical stiffness of fastening system 5.3.2.3 Electrical insulation 5.3.2.4 Vertical load test for cast-in fastening components 5.3.3 Track stability 5.3.3.1 Lateral resistance of sleeper in ballast 5.3.3.2 Longitudinal resistance of sleeper in ballast |
| 17 | 5.4 Impact of traffic characteristics and track alignment 5.4.1 Axle load 5.4.2 Maximum speed 5.4.3 Curving load 6 Design method 6.1 Specific aspects for design and testing 6.1.1 Railway experience for exceptional or accidental impact loads 6.1.2 Flexural tensile strength of concrete |
| 18 | 6.1.3 Losses of prestressing 6.1.4 Experience for track work 6.2 Design calculation 6.2.1 General 6.2.2 Calculation of dynamic rail seat load Pk under normal service conditions 6.2.3 Calculation of the characteristic bending moments for rail seat of sleepers |
| 19 | 6.2.4 Calculation of the characteristic bending moments for centre part of sleepers |
| 20 | 6.2.5 Calculation of the characteristic bending moments for bearers 6.2.6 Checking of stresses in concrete 6.2.7 Determination of test bending moments for first crack formation 6.2.7.1 Prestressed sleepers and bearers |
| 21 | 6.2.7.2 Reinforced concrete sleepers |
| 22 | Annex A (informative)Design methods and factors for sleepers A.1 General A.1.1 Introduction A.1.2 Determination of characteristic bending moments |
| 23 | A.1.3 Load levels and corresponding bending moments |
| 24 | A.2 Rail seat load A.2.1 Normal service increment for the dynamic wheel load A.2.2 Distribution of vertical loads in longitudinal direction A.2.2.1 Theoretical distribution |
| 27 | A.2.2.2 Effect of support faults A.2.3 Effects of elastic rail pads A.2.4 Calculation of dynamic rail seat load A.3 Characteristic bending moments A.3.1 General |
| 28 | A.3.2 Rail seat section A.3.2.1 Positive bending moment |
| 29 | A.3.2.2 Negative bending moment A.3.3 Sleeper centre section A.3.3.1 Negative bending moment |
| 35 | A.3.3.2 Positive bending moment at sleeper centre A.4 Factors for test loads and acceptance criteria A.4.1 General A.4.2 Factor for first crack formation A.4.2.1 Calculation for test bending moments |
| 36 | A.4.2.2 Factor kt for acceptance criterion A.4.3 Factors for exceptional loads |
| 37 | A.4.4 Factors for accidental loads A.4.5 Factor for fatigue test A.5 Checking of stresses for Serviceability Limit State (for prestressed sleepers only) |
| 38 | A.6 Design examples A.6.1 General |
| 40 | A.6.2 Example 1: 1 435 mm gauge waisted sleeper with elastic beam on elastic foundation calculation A.6.2.1 General |
| 42 | A.6.2.2 Characteristic rail seat load A.6.2.3 Characteristic bending moments |
| 48 | A.6.3 Example 2: 1 435 mm gauge rectangular sleeper using simplified method A.6.3.1 General |
| 50 | A.6.3.2 Characteristic rail seat load A.6.3.3 Characteristic bending moments |
| 51 | A.6.3.4 Bending capacities |
| 53 | A.6.3.5 Calculation of test load and acceptance criterion |
| 54 | A.6.4 Example 3: 1 668 mm gauge waisted sleeper A.6.4.1 General |
| 55 | A.6.4.2 Characteristic rail seat load A.6.4.3 Characteristic bending moments A.6.4.4 Calculation of test loads and acceptance criteria |
| 58 | Annex B (informative)Design methods and factors for turnout bearers |
| 61 | Annex ZA (informative)Relationship between this European standard and the Essential Requirements of EU Directive 2008/57/EC aimed to be covered |
