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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Fire Engineering Design of the New "Reichsbrucke" in Vienna
Author(s): Ataman Haksever and Karl Kordina
Publication: Special Publication
Appears on pages(s): 177-200
Keywords: box beams; bridge decks; bridges (structures); cracking (fracturing);fire resistance; fire tests; girder bridges; high
insulation; prestressed concrete; research;
stiffness; subways; tunnels.
Abstract:This paper describes the evalution of the necessary fireprecaution measures for the inner surface of a box girder bridge used for subway traffic, where a considerable fire risk can occur. The study shows in a concise form the evaluation of the relevant amount of fire load caused by the train and gives a summarizing view of a heat balance calculation, which leads to non-steady tem-perature conditions inside the box girder bridge, depending on the fire load and ventilation conditions. Taking into account the decrease in stiffness caused by temperature and cracking, and their combination with the load effects under service conditions in transverse as well as in longitudinal direction, the thermal restraining effects are evaluated. In consequence of this study it was shown that the bridge girder can not resist a fire attack without severe damage, if no inside insulation to the box girder is applied.
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