Seismic assessment of confined masonry against URM and RC-framed buildings on sloping ground in hilly regions: performance-based analysis and application of the Indian code

• Autor(a) principal: Maheshwari, Rohit
• Data de Publicação: 2023
• Outros Autores: Singh, Binay Kumar, Marques, Rui Filipe Pedreira
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: https://hdl.handle.net/1822/88394
• topic: Seismic building assessment; Linear analysis methods; Newmark-beta direct integration method; Confned masonry structures; Indian seismic code; Confined masonry structures; Engenharia e Tecnologia::Engenharia Civil; Indústria, inovação e infraestruturas; Cidades e comunidades sustentáveis

This article focuses on the task of assessing the seismic performance of buildings, in particular for structures built on sloping ground in hilly areas that are prone to earthquakes. The study includes a comparative analysis of three building typologies: confined masonry (CM), unreinforced masonry (URM), and reinforced concrete (RC) framed structures, using the latest Indian codes for seismic assessment. Additionally, the application of linear analysis procedures through the Newmark-Beta direct integration method is explored. The main objective is to compare the seismic response of CM buildings with that of URM and RC-framed structures, specifically regarding base shear, modal parameters, and maximum acceleration. The goal is to determine which structural typologies are most suitable for sloping ground in hilly regions. Additionally, the research addresses the importance of incorporating best practices into building codes and standards to enhance the seismic performance of buildings in these areas. For this, the methods proposed in the IS-1893-Part-1-(2016) are critically examined and applied to a case study building, considering the three structural typologies. Based on the comparisons, it is concluded that CM buildings are more advantageous due to their affordability, durability and ability to withstand seismic forces. This last aptitude is due to the confinement provided by the RC tie-elements. The results are of significant value to policymakers, engineers and builders involved in constructing earthquake-resistant buildings in hilly regions. The research work highlights best practices in building assessment and design and identifies areas to enhance the seismic performance of buildings.