1. Nonlinear Numerical Modeling of Complex Masonry Heritage Structures Considering History-Related Phenomena in Staged Construction Analysis and Material Uncertainty in Seismic Assessment
- Author
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Pere Roca, Luca Pelà, Savvas Saloustros, Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, and Universitat Politècnica de Catalunya. ATEM - Anàlisi i Tecnologia d'Estructures i Materials
- Subjects
Probabilistic analysis ,Computer science ,Monte Carlo method ,0211 other engineering and technologies ,Numerical modeling ,Enginyeria civil::Materials i estructures [Àrees temàtiques de la UPC] ,020101 civil engineering ,Monte-Carlo simulation ,02 engineering and technology ,0201 civil engineering ,continuum damage mechanics ,Seismic assessment ,021105 building & construction ,Earthquakes ,Probabilistic analysis of algorithms ,Masonry--Mathematical models ,Enginyeria civil::Geotècnia::Sismologia [Àrees temàtiques de la UPC] ,Safety, Risk, Reliability and Quality ,Civil and Structural Engineering ,Estructures de murs -- Models matemàtics ,Pushover ,business.industry ,Stochastic process ,Numerical analysis ,Building and Construction ,Structural engineering ,Visco-elastic-ity ,Stochastic analysis ,Masonry ,Nonlinear system ,Crack-tracking ,business ,Historical masonry structures - Abstract
This material may be downloaded for personal use only. Any other use requires prior permission of the American Society of Civil Engineers. This material may be found at https://ascelibrary.org/doi/abs/10.1061/%28ASCE%29CF.1943-5509.0001494. This paper presents the systematic use of numerical analysis as a tool for addressing some of the most common challenges encountered in the structural analysis of complex historical masonry structures, i.e. the description of the effects of history-related phenomena and the un-certainty of material properties. The numerical strategy is based on the use of a constitutive model able to describe time-dependent strain accumulation, as well as damaging behaviour un-der different stress states. This constitutive model is combined with a crack-tracking technique to represent tensile crack localization. The numerical model is applied to the study of two im-portant monuments in Spain, i.e. the Mallorca Cathedral and the church of the Poblet Monas-tery. The staged construction analysis of the first case study allows understanding the reasons of its current deformed condition, i.e. critical construction process, strain accumulation given by long-term creep phenomena, and nonlinear geometric effects. The structural analysis of the second case study allows the structural diagnosis of the existing deformation and cracking pat-terns given by architectural alterations, insufficient buttressing of the naves, and past earth-quakes. The application of a probabilistic analysis to the church of the Poblet monastery allows considering the effects of the uncertainties of material properties and numerical parameters in the seismic vulnerability assessment. The authors would like to thank the Ministry of Science, Innovation and Universities (MCIU) of the Spanish Government, the State Agency of Research (AEI) and the European Regional Development Fund (ERDF) through the SEVERUS project (Multilevel evaluation of seismic vulnerability and risk mitigation of masonry buildings in resilient historical urban cen-tres ref. num. RTI2018-099589-BI00).
- Published
- 2020
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