Civil Engineer Expert

Theory and Design of Bridges

Covers current design techniques for both allowable stress and new load and resistance factor design (LRFD) approaches recommended by the forthcoming American Association of State Highway and Transportation Officials draft specifications. Addresses the need for repair or replacement of 225,000 U.S. highway bridges as well as the need for 70,000 new bridges in the next 15 years.
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Examining the fundamental differences between design and analysis, the author explores the close relationship between aesthetic and technical creativity and the importance of the intuitive, more imaginative qualities of design that should be employed by every designer when designing a structure. Aiding designers of concrete bridges in developing an intuitive understanding of structural action, this book thereby encourages innovation and the development of engineering architecture.

The Design of Pre-Stressed Concrete Bridges

Simple, relevant calculation techniques that should precede any detailed analysis are summarized. Construction methods used to build concrete bridge decks and substructures are detailed and direct guidance on the choice and the sizing of different types of concrete bridge deck is given.

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Stress Ribbon and Cable Supported Pedestrian Bridges

‘Stress-ribbon bridges’ is the term used to describe structures formed by a very slender concrete deck in the shape of a catenary. They can be designed with one or more spans and are characterized by successive and complementary smooth curves.

These curves blend into the natural environment and their forms, the most simple and basic of structural solutions, clearly articulate the flow of internal forces which can be erected without undue pressure on the environment.

Stress Ribbon and Cable-supported Pedestrian Bridges looks at how slender concrete deck are used in the design of suspension and cable stayed structures. It looks at their characteristic feature; their rigidity, which is mainly given by the tension stiffness of prestressed concrete decking, so much so that movement caused by pedestrians or wind does not register as discomfort by users. Starting with a brief history the title describes structural types, addresses general design criteria, current technology, static and dynamic analysis and discusses the results of the static and dynamic loading tests. Illustrated throughout, Stress Ribbon and Cable-Supported Pedestrian Bridges provide examples of outstanding structures, which have been recently completed.

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