SEISMIC ASSESSMENT AND INNOVATIVE STRENGTHENING OF CORRODED CANTILEVER STRUCTURES IN MULTI-STOREY BUILDINGS

Abstract

The research aims to investigate the existing design standards KANEPE (2017) [1] and EN 1998-3 (2005) [2] regarding the seismic assessment of existing reinforced concrete structures through a real case study. Also, the current and applicable design standards together with the available strategies and methodologies for seismic retrofit of existing structures are presented in detail. In addition, the techniques and methods proposed to date for retrofitting reinforced concrete cantilever members such as balconies are analyzed. Through the real example, are presented: the operation of the reference building over the years, its existing conditions and the available architectural and structural engineering studies on the basis of which the build ing was constructed. In addition, the assessment methodology is described using the seismic assessment results of the existing building by identifying the critical structural elements with an advanced degree of damage aiming to explore innovative retrofitting methods, focusing on cantilever structural elements. The novel aspect of the proposed research project distin guishes it from similar studies by using an actual case study of an existing reinforced con crete structure that was constructed in Rush in the 1980s. As a result of aging, the structure's cantilever failed in a brittle manner. With regard to reinforced concrete cantilevers aging is sues make them vulnerable to potential failure and thus the study of their behavior and sug gestion of strengthening techniques are one of the most current engineering issues that structural engineers are requesting solutions for. Through this study, a comprehensive meth odology of structural assessment and recommendation of retrofitting options is carried out