Author: Christiansen, K P
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Christiansen, K P
The Structural Engineer, Volume 41, Issue 8, 1963
Composite construction in structural steel and concrete slab in the early years was mostly designed for medium-span highway bridges in which steel beams were seldom fully encased and for which shear connectors were necessary to maintain the composite action against the vibration due to traffic. In consequence the majority of the experimental investigations were concerned with the behaviour of composite beams provided with shear connectors and the load-carrying capacity of various types of shear connector. Very little has been done on the determination of horizontal shear resistance of composite Tee-beams in which the fully encased steel joist has no shear connectors. F. K. C. Wong
The paper deals briefly with the application of reinforced concrete cellular deck for bridges (hereinafter referred to as box girder) in the USA and its wide use in the State of California for structures in urban expressway systems. The history of the box girder structure, its advantages, economy and applications are mentioned. Design specifications both theoretical and practical are discussed and illustrated. Finally a typical example of a box girder detail is shown together with sketches and photographs of box girder application in viaducts and flyovers. S. H. Studzinski
During the last decade the electronic digital computer has come to be increasingly used for large-scale accountancy and for the solution of complex scientific calculations. Many problems in structural analysis and design can now be performed very easily on the electronic computers which have been installed up and down the country, particularly at the universities and at research institutions. The purpose of this paper is to explain briefly how these machines work and how they are actually operated to analyse various kinds of structure. E. LIGHTFOOT