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This research project was undertaken to resolve a series of technical problems raised in connection with the development of steel and composite bridges for high-speed trains. One problem was the limitation of plate thickness in order to avoid brittle fracture and the reduction of fatigue strength for thick plates. In order to facilitate the use of thick plates, a reliable and economical method was developed for the choice of material, and the fatigue strength in relation to plate thickness was improved. Studies on the composite behaviour at intermediate supports of continuous bridges took the most recent know-how on time effects of concrete into account and showed simplified engineering models and how the cracking of the concrete slab may be considered for ULS, SLS and fatigue assessments with sufficient reliability.

The work on user requirements in view of stiffness shows that comfort depends more on parameters than on deflection only; the limits of deflection specified so far are too conservative and penalize, in particular, the use of high-strength steels. In this field, further cooperation with railway authorities is necessary. Particular studies on noise emission for ballasted and non-ballasted bridges reveal that composite bridges behave like full concrete bridges. Modern optimised non-ballasted steel bridges behave like ballasted structures and have good performance.

The results of this research project have already been partly transferred into agreed design rules by implementing them in ENV 1993 Part 2 Design of Steel Bridges, and ENV 1994 Part 2 Design of Composite Bridges. es.

Additional information

Authors: SEDLACEK G ET AL, RWTH Aachen (DE);BROZETTI J, Centre technique industruelle de construction metallique, Saint-Remy-les-Chevreuse (FR);NUSSBAUMER A, Centre technique industruelle de construction metallique, Saint-Remy-les-Chevreuse (FR);HANSWILLE G, BUGH Wuppertal, Institute for Steel and Composite Structures, Wuppertal (DE);BALLIO G, Politecnico di Milano (IT);RISTORI F, Structura Engineering, Leghorn (IT);STARK J W B ET AL, NS Technisch Onderzoek, Utrecht (NL);VAN EIJKEREN B, Holland Railconsult, Utrecht (NL);GULDIE K, Holland Railconsult, Utrecht (NL);VAN TOL P F, Delft University of Technology, Faculty of Civil Engineering, Delft (NL)
Bibliographic Reference: EUR 20035 EN (2001), pp. 427. Euro: 63.00
Availability: Available from EUR-OP sales agent URL:
ISBN: ISBN 92-894-1827-3
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