2nd Croatian Conference on Earthquake Engineering 2CroCEE

Abstract
Multi-storey reinforced concrete structures in previous periods, in general do not meet current seismic design code requirements, including the poor materials and execution of civil engineering works. In scope of this, is analysed the behaviour of the structures during the Earthquake of November 2019, in Albania, specifically in different buildings stocks.
Typical structural deficiencies observed in R/C frame buildings affected by the 2019 earthquake reveal that many collapses occurred could be attributed to the poor quality of construction and use of non-ductile detailing and during the assessment that deficiency beam –column joints can jeopardise the integrity of structures. In general, it is accepted the beam-column joints are critical elements of reinforced concrete buildings subjected to lateral loads and that they may require specific design. Assessment reports have often indicated that beam-column joints, which are one of the most vulnerable and critical structural element, often suffer shear and/or bond (anchorage) failures leading to a partial or total collapse of the structure.
This paper will present some of destructive and non-destructive testing specifically to the beam-column joints and techniques using the FRP for strengthening. Strengthening of beam-column joints by FRP materials nowadays is treated with various analytical approaches integrated in different software’s. Various analysis have been conducted and practical proposal for retrofitting is presented in cohesion with study case and the implementation
Keywords: beam-column joint, moment-resisting frame, seismic behaviour, strengthening