INVESTIGATING ADVANCED SEISMIC RETROFITTING TECHNIQUES FOR IMPROVING THE STRUCTURAL RESILIENCE OF EARTHQUAKE-PRONE BUILDINGS

Abstract

This study investigates the efficacy of advanced seismic retrofitting techniques in enhancing the structural resilience of buildings located in earthquake-prone regions. The research evaluates the performance of various retrofitting systems, including seismic isolation, hybrid retrofitting, and shape memory alloy (SMA)-based systems, through a combination of experimental tests, microstructural analysis, and finite element simulations. The results demonstrate that seismic isolation systems provide the most significant improvement in structural performance, achieving the lowest peak displacement and maximum stress, thereby enhancing building stability during seismic events. Hybrid retrofitting systems exhibited a balance between energy dissipation and structural integrity, making them a viable alternative. The peak displacements of SMA-based retrofitting systems surpassed other techniques but they delivered substantial energy dissipation.  The investigation focuses on explaining the vital role that cooling rates play together with other process parameters in achieving superior retrofitting material performance.  Quantitative research along with computational analyses indicate rapid cooling processes generate extensive material defects and raises residual stress levels which deteriorate the structural properties.  The authors argue that proper management of manufacturing procedures must occur to avoid negative impacts which ensure lasting success of the retrofitting techniques.  Hybrid materials with SMA alloys achieved superior material consistency containing fewer flaws than conventional steel-braced systems according to microstructural examinations.  The experimental results provide essential new understanding and complete guidelines for engineers and legislators who need to select appropriate retrofitting methods based on material properties and cost-efficiency and performance requirements.  Seismic retrofitting receives clarity through this research due to its experimental and computational findings that help engineers and planners develop upcoming earthquake-resistant designs for vulnerable regions.