Enhancing earthquake resilience in L- and T-shaped buildings using post-tensioned rocking shear walls

This study investigates the seismic behavior of L- and T-shaped buildings that incorporate post-tensioned rocking shear walls (PTRSW) when subjected to unidirectional seismic forces. The primary objective is to assess the effectiveness of these shear walls in enhancing earthquake resistance. The approach of the study combines experimental testing with numerical simulations to evaluate the seismic performance of buildings with and without these shear walls. Key performance indicators include energy dissipation, inter-story drift, and lateral displacement, alongside examining natural frequencies and mode shapes for a comprehensive understanding of the seismic response. The findings indicate that structures with these shear walls exhibit slightly higher initial displacements but significantly lower residual displacements than traditional designs, helping minimise structural damage. Additionally, these buildings demonstrate improved energy dissipation and maintain elasticity under severe seismic loads, showcasing greater resilience. While natural frequencies and mode shapes remain unchanged, including these shear walls effectively reduces overall structural deformation, thereby enhancing seismic performance. The discussion emphasises the potential of this technology to transform seismic-resistant construction by offering a more adaptable and damage-tolerant design. In conclusion, incorporating post-tensioned rocking shear walls in building practices in earthquake-prone areas is crucial for improving resilience and safety. These results highlight their role in developing innovative structural systems capable of withstanding intense seismic events, thus enhancing the durability and safety of modern buildings.