RECONSTRUCTION AND STRENGTHENING OF REINFORCED CONCRETE FRAME STRUCTURE – A CASE STUDY

The case study of the reconstruction and strengthening of reinforced concrete frame structure of one stall building is presented in the paper. A part of the building has collapsed due to insufficient tension reinforcement at the beam-column joint and at the midspan. The reconstruction measures consist of the replacement of the collapsed frames with the new ones, as well as strengthening of undamaged frames. The strengthening method with additional steel plates in tension zone is proposed, which is verified based on the stress-strain analysis of strengthened cross-sections.