This document covers the following aspects: \u2014 Definition of a common method to assess track loading of a heavy rail vehicle for lines of 1 435 mm track gauge in curve radii below 250 m (test zone 5), which is not part of the acceptance testing according to EN 14363. This method is restricted to vehicles with maximum vertical wheelset forces up to 225 kN. It includes consideration of: \u2014 on-track measurements with instrumented wheelsets; \u2014 on-track measurements with local measurement sites; \u2014 simulation including description of requirements for use; \u2014 recalculation of EN 14363 results including description of requirements for use; \u2014 simple parameter check (dispensation from assessment of track loading). \u2014 Description of available knowledge of running behaviour of existing vehicles. \u2014 Description of observed track wear and damage related to traffic mix, track loading results of vehicles and axle loads related to track design. The decision which railway line requires these tests is not part of this specification. This specification can support national regulations in this field but does not affect directly existing national regulations such as [4] and [5].<\/p>\n
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| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 4 Deviation from requirements 5 Test requirements 5.1 General 5.2 Test extent 5.3 Test vehicle 5.4 Test conditions 5.5 Assessment of test results and documentation <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 6 Test zone 5 \u2013 dynamic performance assessment 6.1 General 6.2 Choice of measuring method 6.3 Performing on-track tests 6.3.1 General 6.3.2 Test zone 5 categories and track sections <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 6.3.3 Test operation 6.4 Measured quantities and measuring points 6.5 Assessment quantities and limit values 6.5.1 General <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 6.5.2 Quasi-static guiding force 6.6 Test evaluation 6.6.1 Statistical evaluation 6.6.2 Calculation of results using multiple regression <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 6.6.3 Consideration of test track specific specialities 6.6.3.1 Jointed track 6.6.3.2 \u2018Cat Ears\u2019 6.6.3.3 Track quality 6.7 Dispensation from tests, reduced test extent <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Annex A (informative)Running Safety and Track Loading in Curves with R < 250 m A.1 Running Safety A.1.1 General A.1.2 Derailment parameter Y\/Q A.1.3 Track shift force \u2211Y <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | A.2 Track loading <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Annex B (informative)Example for a simplified method using simulation validated for application under test zone 5 conditions B.1 General B.2 Validation of vehicle model B.2.1 General <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | B.2.2 gaining data of wayside measuring site B.3 Track layout, track quality and rail sections B.4 Simulation of track loading <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Annex C (informative)Example of limit values <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Annex D (informative)Simple parameter check (dispensation from assessment of track loading) <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Railway applications. Investigations on vehicles to quantify track loading in curve radii below 250 m<\/b><\/p>\n |