Some Challenges On The Aeroelastic Analysis And
Design Of Long Span Bridges
Author(s)
S. Hernandez, F. Nieto, A. Baldomir & J. A. Jurado
Abstract
Many suspension or cable stayed bridges of very long span length have been
built in the past decades and several projects of similar or even greater
significance are under study. One of the main requirements of these structures is
their safety under high wind speeds. Bridge aeroelasticity is the scientific field
that study such a problem and is nowadays a quite well established discipline but
some challenges, such as the proper procedure for the evaluation of wind speed,
the use of CFD techniques or design optimization methodologies remain to be
solved. This paper explains the current situation of these topics and outlines
some ways out to be considered.
Keywords: long span bridges, bridge aeroelasticity, reliability analysis,
computational fluid dynamic, structural optimization.
1 Introduction
The number of long bridges built in the last decades is really very significant and
examples of these structures can be found in each continent, for instance the
Great Belt and the Oresund bridges in Denmark, the Stonecutters and Tsing Ma
bridges in Hong Kong, the Tatara and Akashi bridges in Japan or the Sutong and
Xihoumen bridges in China are cases of recent realizations and the future bridge
over the Forth river (UK), the Messina strait (Italy), the Chacao channel (Chile),
or the era2000 project (Spain) [1] represent future links under development.
All these structures need a complete study to identify their behaviour under
wind loads, in other words, to check their aeroelastic behaviour. In that regards it
can be accepted that bridge aeroelasticity is nowadays a well established
discipline. Tests carried out in boundary layer wind tunnel with reduced models
Keywords
long span bridges, bridge aeroelasticity, reliability analysis,
computational fluid dynamic, structural optimization
Related Book
Other papers in this volume
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