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Modeling, fragility and risk assessment of ancient freestanding columns and colonnades
Abstract A novel methodology for the fragility and risk assessment of ancient freestanding monolithic columns and colonnades is presented. The proposed approach is based on a modeling that can be implemented in a general purpose seismic design software, thus avoiding time-consuming and/or complicated simulations. Furthermore, a novel performance-based fragility and risk assessment framework, tailored to the problem at hand, is presented. The paper first discusses the problem of modeling these structures as rocking systems using negative-stiffness rotational springs. For the fragility assessment, pertinent performance criteria and intensity measures are proposed. The examples discussed show the capacity of the proposed modeling to simulate a variety of column and colonnade ancient structures and to quickly provide accurately the fragility curves within a fully performance-based framework.
Highlights Models for the seismic response of monolithic columns and colonnades are presented. A novel fully performance-based fragility and risk assessment framework is discussed. Alternative Intensity Measures (IM) are discussed in order to obtain the fragilities The framework has advantages: accuracy, speed, robustness and easy implementation. Two case-studies are presented in order to highlight the advantages of the proposed methodology.
Modeling, fragility and risk assessment of ancient freestanding columns and colonnades
Abstract A novel methodology for the fragility and risk assessment of ancient freestanding monolithic columns and colonnades is presented. The proposed approach is based on a modeling that can be implemented in a general purpose seismic design software, thus avoiding time-consuming and/or complicated simulations. Furthermore, a novel performance-based fragility and risk assessment framework, tailored to the problem at hand, is presented. The paper first discusses the problem of modeling these structures as rocking systems using negative-stiffness rotational springs. For the fragility assessment, pertinent performance criteria and intensity measures are proposed. The examples discussed show the capacity of the proposed modeling to simulate a variety of column and colonnade ancient structures and to quickly provide accurately the fragility curves within a fully performance-based framework.
Highlights Models for the seismic response of monolithic columns and colonnades are presented. A novel fully performance-based fragility and risk assessment framework is discussed. Alternative Intensity Measures (IM) are discussed in order to obtain the fragilities The framework has advantages: accuracy, speed, robustness and easy implementation. Two case-studies are presented in order to highlight the advantages of the proposed methodology.
Modeling, fragility and risk assessment of ancient freestanding columns and colonnades
Diamantopoulos, Spyridon (author) / Fragiadakis, Michalis (author)
Engineering Structures ; 275
2022-11-06
Article (Journal)
Electronic Resource
English
Columns , Colonnades , Ancient monuments , Fragility , Earthquakes , Rocking , Risk
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