Strength Analysis and Method of Load-Bearing Wall Areas Loosen by Installing New Openings

The paper proposes the strength analysis of internal load-bearing walls loosen by the installation of new openings during the redevelopment (reconstruction) of apartments in an old building. Purpose : The proposed method for strengthening load-bearing walls is developed to ensure further trouble-free operation of load-bearing structures of buildings. Methodology/approach . The creation of combined structure based on gluing a double-sided frame made of carbon fiber reinforced canvases (tapes), including determination of their cross-sectional area based on the equality of the bearing capacity of the tape and missing (cut) longitudinal working reinforcement. Research findings : The efficiency of the proposed combined structure for strengthening load-bearing walls is substantiated and confirmed by calculations and introduced into practice in 2016. Practical implications: Research results can be used in strengthening not only load-bearing walls loosen by the installation of new openings, but also existing window or door openings. Originality/value . It is possible to consider reinforcing a section of the internal load-bearing wall above the cut-out opening by gluing a double-sided clamp made of carbon fiber reinforced canvases (tapes) and calculating their required cross-section.