Scholarly record
POST-FIRE INSPECTION OF A REINFORCED CONCRETE FRAME BRIDGE
Abstract
This paper presents an investigation of a reinforced concrete frame bridge in Prague, Czech Republic, affected by a severe fire caused by burning tires beneath the structure. The resulting high temperatures likely influenced both the concrete and reinforcing steel, potentially reducing material strength and altering mechanical properties. A detailed assessment was carried out to evaluate the current condition of the bridge. The investigation included visual inspection, mapping of surface damage, and extraction of concrete cores from selected locations, with emphasis on areas most exposed to fire. Laboratory testing focused on compressive strength and basic material characteristics. Reinforcing steel samples taken from affected zones were also tested in tension to identify possible changes in strength and ductility. The results provide an overview of the extent and variability of fire-induced damage. They serve as a basis for considering appropriate repair or strengthening measures. From a sustainability perspective, the study supports decision-making aimed at extending the service life of existing structures, reducing the need for demolition and new construction, and thereby contributing to more resource-efficient and environmentally responsible engineering practice.
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