SED 17 (print) Extradosed Bridges

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Extradosed Bridges

Extradosed bridges can be an elegant and economic solution for bridges with spans ranging between 100 and 250m. This novel type of cable-supported bridges has become quite successful in recent years first in Japan and then all over the world. Experienced members of the international bridge community have come together in Working Commission 3 of IABSE to share their knowledge and to prepare an SED which provides the reader with guidance and practical advise that was not available so far. This book contains useful information regarding conceptual and structural design, analysis, construction, cost and typical properties of Extradosed Bridges.

ISBN 978-3-85748-172-7








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Description

While the term “Extradosed” was coined in France in the 1980s, the first extradosed bridges were all built in Japan and today more than 200 of them can be found all over the world. Commonly agreed principles or helpful design guidelines about these bridges, however, do not exist in publications.
In 2014 an international group of engineers, all of them experienced in the field of cable-supported bridges were inducted into Working Commission 3 of the International Association for Bridge and Structural Engineering (IABSE) to address this information gap. The members of the group exchanged their views and worked together via e-mails, and meetings in person took place during the IABSE conferences in Geneva 2015, Stockholm 2016 and Vancouver 2017.
Extradosed bridges with their shallow stay cables and stiff decks can be an economic and attractive alternative to girder and cable-stayed bridges for spans between 100 and 250m.
The structural system of the extradosed bridges can be described as ‘in-between’ or ‘hybrid’ between balanced-cantilever-type girder and cable-stayed bridges. Therefore, there is not “one” narrowly defined extradosed bridge. Rather, there is a smooth transition from girder to extradosed to cable-stayed bridge and this is reflected in this report.
This state-of-the-art report is the collective experience of the group. All aspects that specifically refer to extradosed bridges are covered here. Typical values and, with equal weight, exception will be presented. The reader will find helpful information about all aspects that are relevant for designing and constructing such bridges. Not all the experts shared the same opinions. Some of the controversial issues will be highlighted, in order to identify fields for further research. The reader will also find, that in the text certain subjects are described in different ways. Also this reflects the fact that several authors were involved in the preparation of this report.
The report is aimed at not just practicing bridge engineers but also teachers and researchers in the field of extradosed bridges. First the general aspects and the history of this bridge type are presented. Conceptual and Structural Design, Analysis, Cable Technology, Construction issues and Cost Considerations are presented in separate chapters.

 

Additional information

Weight 0.344 kg