Railroad bridge dynamics and ratings : IDEA program final report, for the period May 2013 through November 2014 /

Bridge rating calculations are performed to determine the safe capacity of existing structures. The American Railway Engineering and Maintenance-of-Way Association (AREMA) Manual for Railway Engineering (MRE) is the current recommended practice used by the great majority of railroads in North Americ...

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Detalles Bibliográficos
Clasificación:Libro Electrónico
Autor principal: Bollinger, Kevin
Autores Corporativos: Innovations Deserving Exploratory Analysis Program, National Research Council (U.S.). Transportation Research Board
Formato: Electrónico eBook
Idioma:Inglés
Publicado: Washington, DC : IDEA Programs, Transportation Research Board of the National Academies, [2015]
Temas:
High speed trains.
Railroad bridges.
Trains à grande vitesse.
Ponts-rails.
high-speed trains.
railroad bridges.
Acceso en línea:Texto completo
Tabla de Contenidos:
  • 1 EXECUTIVE SUMMARY ... 1 2 MATERIALS REVIEWED ... 2 3 NORMAL RATING CALCULATION ... 3 3.1 AMTRAK BRIDGE 155.85 OVER THE USQUEPAUG RIVER IN RHODE ISLAND ... 3 3.2 NORMAL RATING CALCULATIONS ... 4 4 DETERMINATION OF DYNAMIC VERTICAL EFFECTS ... 4 4.1 MODELING ... 5 4.2 DYNAMIC EQUATIONS AND CALCULATION SOFTWARE ... 5 4.2.1 The Moving Load Model ... 5 4.2.2 Natural Frequency and Damping Equations ... 7 4.2.3 Moving Load Model with Vehicle-Bridge Interaction Considerations ... 8 4.2.4 Wheel Load Case ... 8 4.3 MODEL AND FIELD RESULTS ... 10 4.3.1 Model Verification ... 10 4.3.2 Work Train Model Information ... 10 4.3.3 Acela Train Model Information ... 12 4.3.4 Byers Report ... 13 4.4 RESONANT SPEEDS ... 15 4.5 CANCELLATION ... 15 4.6 DYNAMIC VERTICAL EFFECT (DVE) ... 15 5 FIELD TESTING ... 16 5.1 OVERVIEW ... 16 5.2 BRIDGE DESCRIPTION ... 16 5.3 INSTRUMENTATION DESCRIPTION ... 17 5.4 MONITORING PROCEDURE ... 17 5.4.1 TRAINS MONITORED ... 18 5.4.2 MONITORING RESULTS ... 19 6 PROPOSED RATING PROCEDURE ... 23 6.1 NORMAL RATINGS CONSIDERING DYNAMIC CHARACTERISTICS ... 23 7 BRIDGE LENGTH AND TRAIN SPEED COMPARISONS ... 24 7.1 COMPARISON OF BRIDGE LENGTHS ... 24 8 CONCLUSIONS AND RECOMMENDATIONS ... 26 9 FUTURE RESEARCH AND CRITERIA DEVELOPMENT ... 26 10 REFERENCES ... 27

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