A New Finite Element–Based Methodology for Earthquake Simulation of Large-Scale Urban Areas
Publication: Journal of Structural Engineering
Volume 148, Issue 4
Abstract
This paper presents a model to quantify the functionality of the physical systems at urban scales using a finite element–based approach. The methodology identifies the functionality of physical systems within an urban area and captures the interaction between infrastructures. Following the finite-element (FE) approach, the Intensity Measure (IM) parameters such as PGA, PGV, etc., are modeled as external perturbation forces. The building’s characteristics are assigned to two-dimensional (2D) elements whose edges overlap with the roads. The discretization of the urban area is based on a preliminary identification of the critical nodes corresponding to the transportation network (e.g., roads junctions, highway forks, etc.) and strategic infrastructures (e.g., shelters, hospitals, etc.). Lifelines (transportation, water, telecommunication, power networks, etc.) are instead modeled as one-dimensional (1D) elements. The constitutive parameters of each element are identified by a novel procedure that considers the inherent fragilities and economic losses of each physical system. The proposed finite-element formulation is capable of spatially quantifying the functionality of the built environment following a seismic event while taking into account the interdependency among physical systems.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The research leading to these results has received funding from the European Research Council under the Grant Agreement n° ERC_IDEal reSCUE_637842 of the project IDEAL RESCUE— Integrated DEsign and control of Sustainable CommUnities during Emergencies.
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Published In
Journal of Structural Engineering
Volume 148 • Issue 4 • April 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Jan 29, 2021
Accepted: Oct 12, 2021
Published online: Feb 2, 2022
Published in print: Apr 1, 2022
Discussion open until: Jul 2, 2022
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