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Composite construction, using a reinforced concrete slab on top of steel girders, is an economical and popular form of construction for highway bridges. This book covers the design of continuous composite bridges, with both compact and non-compact sections, and simply supported composite bridges with the 'slab-on-beam' form of construction. Part One provides advice on the general considerations for design, the initial design process, and the verification of structural adequacy in accordance with BS 5400. The determination of design forces throughout the slab is described, and key features relating to slab design are identified. Advice on structural detailing is also given. Part Two provides worked examples for a four-span bridge, three-span bridge and for the deck slab of a simply supported bridge. Each example is presented as a series of calculation sheets, with accompanying commentary and advice given on facing pages. Design Guide for Composite Highway Bridges is a compilation of guidance previously given in separate SCI publications. As such it will act as an authoritative guide for new designers and as a reference text for the bridge design office.
A comprehensive guide to bridge design Bridge Design - Concepts and Analysis provides a unique approach, combining the fundamentals of concept design and structural analysis of bridges in a single volume. The book discusses design solutions from the authors’ practical experience and provides insights into conceptual design with concrete, steel or composite bridge solutions as alternatives. Key features: Principal design concepts and analysis are dealt with in a unified approach. Execution methods and evolution of the static scheme during construction are dealt with for steel, concrete and composite bridges. Aesthetics and environmental integration of bridges are considered as an issue for concept design. Bridge analysis, including modelling and detail design aspects, is discussed for different bridge typologies and structural materials. Specific design verification aspects are discussed on the basis of present design rules in Eurocodes. The book is an invaluable guide for postgraduate students studying bridge design, bridge designers and structural engineers.
"Steel-concrete composite bridges shows how to choose the bridge form and design element sizes to enable the production of accurate drawings and also highlights a wide and full range of examples of the design and construction of this bridge type."--Jacket.
In steel trapezoidal box girder bridge systems, the U-shaped steel girder is designed to act compositely with the concrete deck to form a closed box for live loading. During the construction stage, however, the behavior is not well understood. The usual practice of assuming the system to be non-composite during construction requires substantial top flange bracing to form a quasi-closed box section. Composite box girders with live loading, and girders during construction, have to be evaluated during the design of curved steel trapezoidal box girder bridges. Considering both cases, the design for construction loading is the least understood and is the most important. Stresses due to construction loading can reach up to 60-70 percent of the total design stress for a given cross section. A three-phase study was undertaken to investigate the behavior of curved trapezoidal box girders during construction.