New Trends and Developments in Bridge Construction
In recent years a great many innovative developments have taken place in modern bridge construction, as will be described in the following. However, it has to be pointed out that important and noteworthy as they are, they hardly constitute an outright rev
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ADVANCED PROBLEMS IN BRIDGE CONSTRUCTION
EDITED BY G.CREAZZA
UNIVERSITY OF VENICE M.MELE
UNIVERSITY OF ROME
SPRINGER-VERLAG WIEN GMBH
Le spese di stampa di questo volume sono in parte coperte da contributi del Consiglio Nazionale delle Ricerche.
This volume contains 243 illustrations.
This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned specifically those of translation, reprinting, re-use of illustrations, broadcasting, reproduction by photocopying machine or similar means, and storage in data banks. © 1991 by Springer-Verlag Wien Originally published by Springer Verlag Wien-New York in 1991
In order to make this volume available as economically and as rapidly as possible the authors' typescripts have been reproduced in their original forms. This method unfortunately has its typographical limitations but it is hoped that they in no way distract the reader.
ISBN 978-3-211-82318-7 DOI 10.10071978-3-7091-2614-1
ISBN 978-3-7091-2614-1 (eBook)
PREFACE
The volwne collects the lecture notes of a course held at the Department of Structural Engineering and Geotechnics of the International Centre for Mechanical Sciences dealing with the most and modern topical problems of bridge design . .The topics presented allow to tackle both theoretical-analytical as well as technicalconstructive aspects of the design problem, pointing out how in the case of bridges, specifically for long span bridges, the two aspects are absolutely inseparable. In modern bridges, reasons of technical and economic feasibility oblige an extreme parceling of the construction process, with the consequent need to revise, with to respect to the past, both design concepts as well as the theoretical apparatus of analysis that governs it. All this can clearly be derived from reading the present volwne, in which the different contributions stress theoretical and technical questions of particular interest and topicality, without claiming to approach them systematically, but offering clear procedural rules and trend indications. With reference to the theoretical approach, some topics of particular importance are reviewed, such as the possibility of using limit analysis, the simplification of the design process for bridges, durability, and computer aided design.
These topics are presented with the aim of providing design tools and not specific analytical verification procedures, for which it is necessary to consult specialized texts. For what concerns the bridge typologies and the corresponding construction problems, the emphasis is mostly on the ones still in an evolutionary phase, that is long span suspended/stayed bridges and cantilever built bridges with prefabricated segments.
Giuseppe Creazza Michele Mele
CONTENTS Page Preface Bridges: some problems and some solutions G.Macchi ........................................................................... ................... ! New trends and developments in bridge construction R. Walther .............................................
