By Rui Calcada, Raimundo Delgado, António Campos e Matos
Since the Nineteen Eighties in Europe high-speed rail has emerged quickly as a method of transportation, and within the upcoming years many extra tunnel, bridge and different infrastructure tasks can be constructed around the continent. while layout innovations and applied sciences have more suitable and cutting edge structural rules have seemed, considering that trains traveling at excessive pace produce new and previously unknown results on constructions corresponding to bridges.
Bridges for High-Speed Railways is a suite of papers from prime specialists during this box. factor addressed include:
– metal and composite bridges for high-speed railways;
– eu criteria for high-speed railway bridges;
– Prestressed concrete high-speed railway bridges;
– Bridge-vehicles dynamic interaction;
– Seismic layout of constructions for high-speed railways;
– Codes and dynamic research;
– development, tracking, upkeep and repair.
Bridges for High-Speed Railways presents a precious resource of reference for bridge designers, specialists, infrastructure proprietors, regulatory specialists, development businesses, researchers, lecturers and scholars fascinated with structural engineering initiatives for high-speed railways.
Read Online or Download Bridges for High-Speed Railways: Revised Papers from the Workshop, Porto, Portugal, 3 - 4 June 2004 PDF
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Additional resources for Bridges for High-Speed Railways: Revised Papers from the Workshop, Porto, Portugal, 3 - 4 June 2004
The model thus obtained considers a degree of freedom for each mode of the structure and an extra one for each interaction element. The equation for each mode (i = 1, . . n) is k j Mi q¨ i + Ci q˙ i + Ki qi = (mj g + mja y¨ j ) φi (drel ) j=1 © 2009 Taylor & Francis Group, London, UK (12) Dynamic Loads in New Engineering Codes for Railway Bridges in Europe and Spain 37 y k (t ) y 1(t ) y 2(t ) n w(x,t ) ϭ ∑ i ϭ1 qi (t ) φi (x) d 1ϭ 0 x dk d2 Figure 4. Representation of axle loads, according to the vehicle-structure interaction simplified model: definition of variables.
For interoperable high speed lines, bridges have to be designed with a high speed load model (HSLMA and HSLMB) that have been defined to cover maximum vertical accelerations produced by all European existing high speed trains (TGV, ICE, Talgo…) but also by future high speed trains that will be designed as required in annex E of EN1991-2. (see Fig. 2 and Table 1). The advantage of HSLM is to limit the number of calculations to be performed although there are 10 models of HSLMA. Vertical accelerations calculated with this load model are always greater than accelerations due to real or future trains but the margin between the effects of each real trains and the effects of this HSLM is not known.
2001, Introduction of the European standardisation for civil engineering in the area of the railways of the federation; Bauingenieur 76; H. 11, pp. 534–535  AEIF internal presentation Dec. 2003, not published © 2009 Taylor & Francis Group, London, UK CHAPTER 3 Railway bridges for high speed lines and Eurocodes D. Martin Engineering Department SNCF, Paris, France ABSTRACT: High speed railway bridges can now be designed using the new European standards “Eurocodes for construction”. Many rules and recommendations concerning Service Limit States, actions and calculations are given in two main parts of these Eurocodes: – Eurocode EN 1990 Annex A2 and EN 1991 – Part 2 section 6 «railway bridges».
Bridges for High-Speed Railways: Revised Papers from the Workshop, Porto, Portugal, 3 - 4 June 2004 by Rui Calcada, Raimundo Delgado, António Campos e Matos