Browsing by Author "Sandoval Mandujano, Cristian"

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    Experimental and Numerical Assessment of the In-Plane Behaviour of PG-RM Walls with Openings
    (Springer, 2025) Vargas Carvajal, Laura Andrea; Sandoval Mandujano, Cristian; Bertolesi, Elisa; Tarque, Nicola; Calderón, Sebastián
    This paper investigates how openings affect the in-plane response of partially grouted masonry (PG-RM) walls. The effect of the openings was assessed regarding shear capacity and failure mode through the cyclic test of four façadetype walls constructed with different opening sizes and with and without asymmetry. The results show that the shear capacity decreases with the opening’s height or width increment. It is also observed that geometric asymmetry generates differences between the lateral resistances of both in-plane loading directions. In addition, a two-dimensional finite element macro model using Abaqus was validated against the experimental results. The numerical strategy implemented satisfactorily represented the shear strength and failure mode of the tested walls. Considering the high complexity of representing the PG-RM behaviour, the proposed model is suitable for reproducing the PG-RM walls’ shear resistance and could be subsequently used further to investigate the effect of openings with different configurations.
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    Preliminary Assessment on Seismic Vulnerability of Masonry Churches in Central Chile
    (2019) Palazzi Chiara, Nuria; Llera Martin, Juan Carlos de la; Sandoval Mandujano, Cristian
    The 2010 Maule Chile earthquake (Mw 8.8) caused extensive structural damage to the built heritage. In particular, the poor seismic performance of a set of unreinforced masonry (URM) churches highlighted the need to implement protective and safety strategies in order to preserve these buildings which exhibit unique constructive and typological features, as a result of a combination of Chilean and European construction cultures. The peculiarity of this heritage and the high seismic hazard of Chilean territory have motivated the present study which aims to apply systematic procedures to assess the seismic vulnerability of these buildings. This article is of archival nature and presents a complete database generated from the geometrical, constructive, and structural characteristics of a representative stock of 106 churches located in central Chile, with the goal of proposing fragility curves to be used in seismic risk assessment. Considering variables related with geometrical, architectonic, and stylistic features, as well as damage levels for the 2010 Maule earthquake, this church sample is classified into three homogenous groups: colonial, neo-classic, and neo-gothic. Moreover, a preliminary qualitative assessment of the seismic capacity of these structures is provided using a survey and analysis of geometric indices for each of the three selected groups.