4
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Specific seismic retrofitting of a compact reinforced concrete building with X-bracings and steel jackets. Application to a primary school in Huelva

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Previous research has indicated that many European buildings are vulnerable to moderate-magnitude earthquakes. For example, during the L´Aquila (Italia, M w 6.3, 2009) and Lorca (Spain, M w 5.9, 2011) earthquakes, many old buildings were severely damaged and some of them collapsed. In specific, significant damage has been found in several school buildings after past earthquakes in Europe. This is due to the fact that many of them were constructed prior to the current seismic codes, thus considering only gravitational loads and with no seismic design whatsoever. Primary schools are even more vulnerable than other typologies because of their low adult/child ratio. The seismic activity of the Iberian Peninsula is low-moderate. However, the Algarve and Huelva regions, which are situated in the south-west, are influenced by large faults which have caused major earthquakes of long-return periods. The European project PERSISTAH ( Projetos de Escolas Resilientes aos SISmos no Território do Algarve e de Huelva, in Portuguese ) aims to cooperatively evaluate the seismic vulnerability of primary schools in the Algarve (Portugal) and Huelva (Spain) regions. The present work is framed under this project. The objective of this paper is to determine the most effective retrofitting scheme for a typical primary school building in this area, considering structural, architectural and constructive parameters. The scheme could be applied to several buildings of the same typology, decreasing costs and time. An existing reinforced concrete frame building has been selected for the study. This is one of the most commonly used typologies for primary schools in this area. A nonlinear static analysis has been carried out in order to study its seismic behaviour. The performance point of the building has been obtained through the capacity-demand spectrum method. The preliminary results have confirmed the poor seismic behaviour of this building. Specifically, soft-story behaviour has been identified in the ground floor and short columns have been observed in the upper floors. Therefore, specific seismic retrofitting solutions have been proposed and evaluated in order to identify the one that is the most efficient. The combination of reinforcements has been done considering the structural and architectural impact and constructive parameters. The calculations have shown that steel X-bracings are the best solution for preventing the formation of a soft-storey in the ground floor. Unfortunately, this scheme increases the deformation in the upper floor columns. The best solution for the upper floors’ short columns has been the use of steel jackets. The results have also shown that this combination produces an important reduction of the expected general damage level. The resulting retrofitting scheme can be extrapolated to other buildings with a similar typology.

          Related collections

          Most cited references36

          • Record: found
          • Abstract: not found
          • Article: not found

          A Nonlinear Analysis Method for Performance‐Based Seismic Design

            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            The effect of masonry infills on the seismic response of a four-storey reinforced concrete frame — a deterministic assessment

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Evidence for active strike-slip faulting along the Eurasia-Africa convergence zone: Implications for seismic hazard in the southwest Iberian margin

                Bookmark

                Author and article information

                Contributors
                Role: Data curationRole: Formal analysisRole: InvestigationRole: MethodologyRole: ResourcesRole: ValidationRole: VisualizationRole: Writing – original draft
                Role: ConceptualizationRole: Formal analysisRole: Funding acquisitionRole: InvestigationRole: MethodologyRole: Project administrationRole: ResourcesRole: SupervisionRole: ValidationRole: Writing – original draftRole: Writing – review & editing
                Role: InvestigationRole: Methodology
                Role: SupervisionRole: Writing – review & editing
                Role: SupervisionRole: Writing – review & editing
                Role: Editor
                Journal
                PLoS One
                PLoS ONE
                plos
                plosone
                PLoS ONE
                Public Library of Science (San Francisco, CA USA )
                1932-6203
                11 September 2020
                2020
                : 15
                : 9
                : e0238505
                Affiliations
                [001]Department of Building Structures and Geotechnical Engineering, University of Seville, Seville, Spain
                Pablo de Olavide University, SPAIN
                Author notes

                Competing Interests: The authors have declared that no competing interests exist.

                Author information
                http://orcid.org/0000-0002-3358-3690
                http://orcid.org/0000-0002-1136-7305
                Article
                PONE-D-20-15119
                10.1371/journal.pone.0238505
                7485823
                7f564b09-ca21-4baf-b869-d07bc8b6146e
                © 2020 Romero-Sánchez et al

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                : 20 May 2020
                : 18 August 2020
                Page count
                Figures: 19, Tables: 6, Pages: 31
                Funding
                This work has been supported by the INTERREG-POCTEP Spain-Portugal programme and the European Regional Development Fund through the 0313_PERSISTAH_5_P project and the VI-PPI of the University of Seville by the granting of a scholarship. The grant provided by the Instituto Universitario de Arquitectura y Ciencias de la Construcción is acknowledged.
                Categories
                Research Article
                Physical Sciences
                Physics
                Classical Mechanics
                Deformation
                Physical Sciences
                Physics
                Classical Mechanics
                Damage Mechanics
                Deformation
                Social Sciences
                Sociology
                Education
                Schools
                Physical Sciences
                Materials Science
                Metallurgy
                Alloys
                Steel
                Engineering and Technology
                Structural Engineering
                Built Structures
                Physical Sciences
                Materials Science
                Material Properties
                Mechanical Properties
                Stiffness
                Earth Sciences
                Natural Disasters
                Earthquakes
                Earth Sciences
                Geophysics
                Seismology
                Earthquakes
                Physical Sciences
                Physics
                Geophysics
                Seismology
                Earthquakes
                Physical Sciences
                Materials Science
                Materials
                Composite Materials
                Concrete
                People and places
                Geographical locations
                Europe
                European Union
                Spain
                Custom metadata
                All relevant data are within the paper manuscript and its Supporting Information files. The original files where obtained from the "Municipal file of Huelva" (Archivo municpal de Huelva, Casa Colón, Huelva, Spain).

                Uncategorized
                Uncategorized

                Comments

                Comment on this article