There are described design decision, calculation results and the results of test conducted on the reinforced concrete beam bridge restored by expanding the bridge span with the bulk reinforced concrete imposed plate (deck) and simultaneous strengthening of beams and changing their static continuous scheme in to supported-freely one.
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This article gives description of the ferroconcrete span constructions and highway bridge piers after long fire action of high intensity as a result of oil products combustion that accidentally sot into the riverbed. The overhaul with amplifi cation of span constructions and piers is made for the restoration of damaged bridge constructions.
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The main results of the study of strength, of strain-deformed state of sections, rigidity and crack resistance of a real bridge beam calculated span 13,7 m with a multibank welded frame are presented.
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