Abstract

This paper focuses on the seismic vulnerability assessment of the San Judas Tadeo´s church in Malloa (Chile), an iconic example of Colonial Chilean architecture. This small adobe structure is a single-nave building consisting of the main nave, a bell-tower located in the façade, two external wooden galleries and additional units such as the sacristy, chapel, and two services areas. The Church has survived several strong earthquakes larger than Mw>8. Besides, after the February 27th, 2010 Maule event it showed remarkable resilience due to the implementation of traditional timber retrofits inserted in the earthen walls. The use of traditional wooden devices such as bond beams, corner keys, and wooden gables, proved to be effective solutions against strong earthquakes. Therefore, this church appears as a relevant case of the use of seismic resistant constructive techniques of the17th century colonial architecture and the study of its seismic behaviour holds great interest and relevance. Aimed to assess the seismic performance of the monument, a complete preliminary study of the church was carried out using a multi-level approach comprising historical research, in situ surveys, crack pattern analysis, physical and mechanical characterization of materials, and structural analyses. In particular as part of an ongoing research, linear and incremental kinematic approaches of limit analyses have been employed with the aim of interpreting the local mechanisms activated during the 2010 Maule earthquake. In these models, the effect of friction on masonry-to-masonry and timber-to-masonry interfaces was considered with promising outcomes. This study results prove the general validity in the field of timber seismic retrofitting of unreinforced adobe buildings.

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References

[1] Arias Arquitectos, and Fercovic, G. 2011. Ficha técnica de daño y oferta de servicios.Informe de la Evaluación Preliminar de Daños Provocados por el sismo de 2010, Chile: Ilustre municipalidad de Malloa, Departamento de Proyecto.

[2] Consejo de Monumentos Nacionales, (CMN) Ministerio de 900 Educación. 2011. Chilean law of monuments 17.288. Accessed March 23, 2017. http://monumentos.cl

[3] Palazzi, N. C., Rovero, L., De La Llera, J. C., Sandoval, C. (2019). Preliminary Assessment on Seismic Vulnerability of Masonry Churches in Central Chile. International Journal of Architectural Heritage, 1-20.

[4] Palazzi, N. C., Favier, P., Rovero, L., Sandoval, C., & de la Llera, J. C. (2020). Seismic damage and fragility assessment of ancient masonry churches located in central Chile. Bulletin of Earthquake Engineering, 1-25.

[5] Surtierra (2011). Recuperación de la Iglesia San Juda Tadeo de Malloa. Informe Final. Santiago: Oficina de Arquitectura Surtierra – in Spanish.

[6] Correia, M., Dipasquale, L., & Mecca, S. (2014). VERSUS: Heritage for Tomorrow. Firenze University Press

[7] Ortega, J., Vasconcelos,G., Rodrigues, H., Correia, M., Lourenço, P.B. (2017). Traditional earthquake resistant techniques for vernacular architecture and local seismic cultures: a literature review.Journal of Cultural Heritage 27, 181-196

[8] Borri, A., Corradi, M., Castori, G., & De Maria, A. (2015). A method for the analysis and classification of historic masonry. Bulletin of Earthquake Engineering, 13(9), 2647-2665.

[9] Instituto Nacional de Normalización (INN), 2013. Estructuras –Intervención de construcciones patrimoniales de tierra cruda– Requisitos del Proyecto Estructural. Santiago, Chile NCh3332.Of2013.

[10] R&V Ingeniero, (2012). Informe de mecánica de suelos. Iglesia San Judas Tadeo. VI región del Liberator Bernardo O‘Higgins

[11] Ministerio de Vivienda y Urbanismo – MINVU (Chile). 2011. Reglamento que fija el diseño sísmico de edificios y deroga D.S. N°117 MINVU of 2010.

[12] Instituto Nacional de Normalización (INN), 1996. Earthquake resistant design of buildings, Official Chilean Code NCh433.Of96.

[13] D. M. LL. PP., (2008), Norme Tecniche per le Costruzioni, 14 Gennaio, Roma (in Italian).

[14] G.U. no.55, 7/03/2006. Approval of forms for the seismic damage assessment of cultural heritage buildings, Decree of the Prime Minister, Rome 23/02/2006. (in Italian).^

[15] Eurocode 8, (2004). Design of structures for earthquake resistance – Part 1: General rules, seismic actions, and rules for buildings (EN 1998-1), European Committee of Standardization. Brussels, Belgium; 2004.

[16] Tarque, N. (2011). Numerical modelling of the seismic behaviour of adobe buildings. de Ph. D., University of Pavia.

[17] Misseri, G., Palazzi, N.C., Rovero, L.(2020) Seismic vulnerability of timber-reinforced earthen structures through standard and non–standard limit analysis. Engineering Structures.

[18] Barbisan, U., & Laner, F. (2000). Capriate e tetti in legno: progetto e recupero: tipologie, esempi di dimensionamento, particolari costruttivi, criteri e tecnologie per il recupero, manti di copertura (Vol. 3). FrancoAngeli.

[19] Casapulla, C., Cascini, L., Portioli, F., & Landolfo, R. (2014). 3D macro and microblock models for limit analysis of out-of-plane loaded masonry walls with nonassociative Coulomb friction. Meccanica, 49(7), 1653-1678.

[20] Casapulla, C., & Argiento, L. U. (2018). In-plane frictional resistances in dry block masonry walls and rocking-sliding failure modes revisited and experimentally validated. Composites Part B: Engineering, 132, 197-213.

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Published on 30/11/21
Submitted on 30/11/21

Volume Interdisciplinary projects and case studies, 2021
DOI: 10.23967/sahc.2021.237
Licence: CC BY-NC-SA license

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