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Buildings 2019, 9(2), 39; https://doi.org/10.3390/buildings9020039

Study of the Seismic Response on the Infill Masonry Walls of a 15-Storey Reinforced Concrete Structure in Nepal

Construct-Lese, Departamento de Engenharia Civil, Faculdade de Engenharia da Universidade do Porto, 4200-001 Porto, Portugal
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Received: 14 December 2018 / Revised: 21 January 2019 / Accepted: 29 January 2019 / Published: 4 February 2019
(This article belongs to the Special Issue Masonry Buildings: Research and Practice)
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Abstract

Following the strong earthquake on April 25, 2015 in Nepal, a team from the University of Porto, in collaboration with other international institutions, made a field study on some of the most affected areas in the capital region of Kathmandu. One of the tasks was the study of a high-rise settle of buildings that were damaged following the earthquake sequence. A survey damage assessment was performed to a 15-storey infilled reinforced concrete structure, which will be detailed in the manuscript. Moreover, ambient vibration tests were carried out to determine the natural frequencies and corresponding vibration modes of the structure. The main aim of this manuscript is to present a numerical study concerning the influence of the masonry infill walls in the structure seismic response. For this, three numerical models were built discriminating the situations with and without damage and nondamaged infill walls. Validation and calibration of the numerical model was ensured by comparing the numerical frequencies with those obtained from ambient vibration tests. In addition, linear elastic analyses were carried out, using real accelerograms from the Gorkha earthquake to assess and quantify the major differences between the models in terms of inter-storey drifts ratios, inter-storey shear forces and seismic loadings. View Full-Text
Keywords: Nepal earthquake; high-rise reinforced concrete structure; masonry infill walls; ambient vibration test; survey damage assessment; numerical modelling Nepal earthquake; high-rise reinforced concrete structure; masonry infill walls; ambient vibration test; survey damage assessment; numerical modelling
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Furtado, A.; Vila-Pouca, N.; Varum, H.; Arêde, A. Study of the Seismic Response on the Infill Masonry Walls of a 15-Storey Reinforced Concrete Structure in Nepal. Buildings 2019, 9, 39.

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