Browsing by Author "Barrientos, Marco"

Now showing 1 - 7 of 7
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    La arquitectura de los terremotos en Chile (1929-1972)
    (2016) Barrientos, Marco; Torrent, Horacio; Pontificia Universidad Católica de Chile. Escuela de Arquitectura
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    Las catedrales de Santiago y La Paz: alcances históricos, arquitectónicos y patrimoniales
    (2021) Barrientos, Marco; Pérez V., Blanca Elvira; Mariaca, Cristian
    El trabajo examina las catedrales de Santiago, Chile y La Paz, Bolivia desde una mirada histórico-arquitectónica, para comprender sus alcances en el campo del patrimonio religioso durante el periodo de transformaciones más importantes en cada caso (1835-1932). Se propone un análisis comparado para identificar similitudes y diferencias en los factores que explican los procesos de construcción de cada caso, con énfasis en las intervenciones de que fueron objeto, enmarcadas dentro de un contexto cruzado por las celebraciones del centenario de las nacientes repúblicas, y su impacto en la imagen urbana de ciudades como Santiago y La Paz.
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    Intervenciones estructurales en la Basílica de la Recoleta Dominica en Santiago de Chile. Una revisión histórica y crítica
    (2024) Barrientos, Marco; Palazzi, Nuria Chiara; Alvarado, Rolando; Sandoval Mandujano, Cristián Eliseo
    Unreinforced masonry (URM) historic churches are highly seismic vulnerable buildings due to its structural and material features. This condition partially explains the irreversible cultural heritage loss in Chile. After earthquakes, many URM churches have been strengthened with reinforced concrete (RC) elements as a seismic proof strategy. In this context, this paper aims to exam-ine the Recoleta Dominica basilica, as a prominent building with architectural, historical, and constructive attributes with efficient seismic performance along years as well, as reported after the 1985 and 2010 megathrust earthquakes. Its seismic performance can be explained by the RC strengthening elements added after the 1927 earthquake, and later 1981-1982 and 2000 structural interventions, avoiding local collapses as serving its conservation. The paper concludes by highlighting the 1927 RC project impact, its early technique reflected on its structural design criteria and following the original building nature. Some other studies in this research line may contribute to a better understanding of the inherited scopes involved in any structural RC project, its impact on the architectural features, the seismic-resistant improvements, and its cultural preservation.
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    La riqueza patrimonial de dos basílicas: San Francisco de La Paz y Recoleta Dominica de Santiago
    (Pastoral UC, 2023) Pérez V., Blanca Elvira; Sandoval Mandujano, Cristián; Barrientos, Marco; Berg C., Lorenzo; Matas, Josefina
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    Non-destructive testing and kinematic limit analysis applied to a historic masonry church early intervened with RC elements
    (2025) Alvarado, Rolando; Barrientos, Marco; Suazo, Antonio; Menanno, Giovanni; Pérez Pinedo, Luis Elías; Palazzi, Nuria Chiara; Sandoval Mandujano, Cristián
    This article assesses the structural condition of a historic unreinforced masonry (URM) church whose original earthquake-resistant system was strengthened with reinforced concrete (RC) elements after the 1927 Mendoza earthquake. This early intervention, which took place between 1927 and 1930, consisted of RC frames formed by beams and columns embedded in the existing masonry. Since then, the church's seismic performance has been satisfactory, presenting minor damage after significant earthquakes. Despite its successful seismic performance, this church-and its strengthening strategy- has not been studied in depth. Due to the limited structural information available, a multidisciplinary study involving several non-destructive tests (NDT) in the church was conducted to understand its current structural state and reduce information gaps derived from historical sources and visual on-site inspection surveys. NDTs included the use of Terrestrial Laser Scanner (TLS), Unmanned Aerial Vehicle (UAV) photogrammetry, and Ground Penetrating Radar (GPR), among others. To assess the effectiveness of RC interventions, seismic behavior before and after the different retrofitting interventions was compared through linear kinematic analyses of the main failure mechanisms observed. The research results show that RC interventions increased the spectral accelerations required to activate overturning mechanisms in the macro-elements identified in the church, with safety indexes exceeding 1.0 for most RC-intervened macro-elements. The latter indicates that these elements are safe under the seismic loads specified by the Chilean code for heritage structures.
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    Seismic Vulnerability Assessment of the Yungay's Historic Urban Center in Santiago, Chile
    (2022) Chiara Palazzia, Nuria; Barrientos, Marco; Sandoval, Cristián; Llera Martín, Juan Carlos de la
    In this paper, a modified empirical large-territorial-scale procedure to assess the seismic vulnerability of aggregate buildings in urban areas located within a highly seismic context is proposed. The methodology is applied to a group of unreinforced masonry (URM) aggregates located in the Yungay's historic center in downtown Santiago, Chile. This assessment was carried out by modifying and integrating a vulnerability-index-based procedure, a specific existing approach called first level macro-seismic method used to predict seismic damage and loss scenarios through fragility curves of structural components. The procedure was calibrated using the observed damage after the 2010 Chile earthquake in 292 URM structural units. The results of this new damage index for URM aggregate buildings are used to derive Probability Mass Functions (PMFs) of the different damage states and preliminary Empirical Fragility Functions (EFFs). To the best of the authors' knowledge, these EFFs are the first publicly available for aggregate Chilean URM buildings. This research and its results are the starting point for a more comprehensive study for assessing damage sce-narios and vulnerabilities of aggregate URM buildings in historic centers of older Chilean cities. These functions may be used in risk assessment, and are useful to prioritize possible future damage mitigation strategies and other processes involving this historical heritage. We foresee that these results could be at least partially applied to other historical urban areas in Chile, and perhaps other old Latin American cities located along the sub-duction convergence region between the Pacific and Continental plates, which were founded similarly.
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    Los sismos y su disciplina : la construcción de una catedral.
    (2011) Barrientos, Marco; Ibarra Alonso, Macarena; Pérez Oyarzún, Fernando