Bridges for High-Speed Railways: Revised Papers from the by Rui Calcada, Raimundo Delgado, António Campos e Matos

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By Rui Calcada, Raimundo Delgado, António Campos e Matos

Since the Nineteen Eighties in Europe high-speed rail has emerged swiftly as a way of transportation, and within the upcoming years many extra tunnel, bridge and different infrastructure tasks may be built around the continent. while layout recommendations and applied sciences have more advantageous and leading edge structural rules have seemed, on the grounds that trains traveling at excessive velocity produce new and previously unknown results on buildings resembling bridges.  

Bridges for High-Speed Railways is a set of papers from major specialists during this box. factor addressed include:

– metal and composite bridges for high-speed railways;

– ecu criteria for high-speed railway bridges;

– Prestressed concrete high-speed railway bridges;

– Bridge-vehicles dynamic interaction;

– Seismic layout of constructions for high-speed railways;

– layout;

– Codes and dynamic research;

– development, tracking, upkeep and repair.

Bridges for High-Speed Railways presents a important resource of reference for bridge designers, specialists, infrastructure proprietors, regulatory experts, development businesses, researchers, lecturers and scholars all for structural engineering initiatives for high-speed railways.

 

 

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Additional info for Bridges for High-Speed Railways: Revised Papers from the Workshop, Porto, Portugal, 3 - 4 June 2004

Example text

From the above results and the consideration of the complete set of results in a set of representative cases [16], [17], a proposal was drafted for a design envelope of uplift effects: min = 2fe− r; min ≥ 0, (14) where fe = Esta,real /Esta,LMd is the ratio between the static response for real trains and that of the design static load model (UIC71 × α), and r is the real impact coefficient, defined by Emax = r Esta,LMd . 35. Consequently, the coefficient min may end up having negative values, which would represent a net dynamic uplift due to the traffic induced structural vibration.

2. In the context of the technical specifications for the interoperability (TSI) as an execution instruction for the EU Directive 96/48/EC. Due to this the quoted parts have legal character for the EU Member States. 3. In the context of a UIC leaflet. g. by EU Directives and others). At the moment 57 of the 58 parts of the eurocodes are published in Germany as German standards DIN EN and will be used in future for the design and construction of structures and buildings in Germany. 5 INTRODUCTION IN THE CONTEXT OF TECHNICAL SPECIFICATIONS FOR INTEROPERABILITY (TSI) In accordance with the EC Directive 96/48/EC of 1996 the technical specifications were elaborated for the interoperability of the high speed rail traffic.

Different types of high-speed trains, according to Eurocode EN1991-2 [10]. influence significantly the resonant peaks, making it extremely difficult to assure the fulfillment of the dynamic performance interoperability conditions. 2) is very useful for the purpose of obtaining a dynamic envelope. Figure 7 shows the dynamic signature (common for LIR and DER methods) obtained © 2009 Taylor & Francis Group, London, UK Dynamic Loads in New Engineering Codes for Railway Bridges in Europe and Spain 39 Talgo AV ICE2 ETR-Y VIRGIN AVE THALYS EUROSTAR 7000 Signature G(λ) (kN) 6000 5000 4000 3000 2000 1000 0 5 10 15 20 25 30 35 Wavelength λ (m) Figure 7.

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