Simulation-based consequence analysis of reinforced-concrete buildings subjected to earthquake- and environment-induced damage accumulation
(2024) In Engineering Structures 317.- Abstract
Structural systems in seismic-prone regions can experience sudden deterioration caused by earthquake-induced ground-motion sequences. In addition, given the prevailing environmental conditions at their site, these systems may undergo gradual deterioration resulting from environment-induced mechanisms. The combined impacts of such phenomena can result in significant structural/non-structural damage, leading to exacerbated consequences (e.g., repair costs, downtime, and casualties) during the systems’ service life compared to the consequences due to each phenomenon in isolation. Yet, such a multi-hazard threat is commonly overlooked. This paper proposes an end-to-end computational framework for simulation-based consequence analysis of... (More)
Structural systems in seismic-prone regions can experience sudden deterioration caused by earthquake-induced ground-motion sequences. In addition, given the prevailing environmental conditions at their site, these systems may undergo gradual deterioration resulting from environment-induced mechanisms. The combined impacts of such phenomena can result in significant structural/non-structural damage, leading to exacerbated consequences (e.g., repair costs, downtime, and casualties) during the systems’ service life compared to the consequences due to each phenomenon in isolation. Yet, such a multi-hazard threat is commonly overlooked. This paper proposes an end-to-end computational framework for simulation-based consequence analysis of deteriorating structural systems subjected to earthquake-induced ground-motion sequences and chloride-induced corrosion deterioration. State-dependent (and time-dependent) fragility and vulnerability relationships are derived as part of the proposed workflow. To this end, a multivariate probabilistic seismic demand model and a collapse generalised logistic model are developed, linking the dissipated hysteretic energy in the ground-motion sequence, the maximum inter-storey drift induced by the first ground motion, the intensity measure of the second ground motion, and the corrosion deterioration level. The time-varying corrosion rate is described through a hurdle model, employing an appropriate (continuous) chloride-penetration model. Vulnerability relationships are derived by combining the developed fragility relationships and suitable building-level consequence models. Finally, the (expected) life-cycle consequences are estimated by subjecting the system to stochastic event sets, encompassing ground-motion sequences. The proposed framework is demonstrated through a case-study reinforced concrete building. Considering the interaction between seismic sequences and corrosion effects, the expected life-cycle consequences in terms of economic loss ratio are 125 % higher than those without considering any hazard interaction. These consequences are mainly dominated by the effects of the ground-motion sequences rather than those associated with corrosion deterioration.
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- author
- Otárola, Kenneth ; Iannacone, Leandro LU ; Gentile, Roberto and Galasso, Carmine
- organization
- publishing date
- 2024-10
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Chloride-induced corrosion, Damage accumulation, Ground-motion sequence, Reinforced-concrete building, Time- and state-dependent fragility, Vulnerability relationship
- in
- Engineering Structures
- volume
- 317
- article number
- 118554
- publisher
- Elsevier
- external identifiers
-
- scopus:85199524032
- ISSN
- 0141-0296
- DOI
- 10.1016/j.engstruct.2024.118554
- language
- English
- LU publication?
- yes
- id
- 1a285ce0-b450-4de7-b054-c91bf51dbedc
- date added to LUP
- 2024-09-02 15:15:09
- date last changed
- 2024-09-02 15:16:16
@article{1a285ce0-b450-4de7-b054-c91bf51dbedc,
abstract = {{<p>Structural systems in seismic-prone regions can experience sudden deterioration caused by earthquake-induced ground-motion sequences. In addition, given the prevailing environmental conditions at their site, these systems may undergo gradual deterioration resulting from environment-induced mechanisms. The combined impacts of such phenomena can result in significant structural/non-structural damage, leading to exacerbated consequences (e.g., repair costs, downtime, and casualties) during the systems’ service life compared to the consequences due to each phenomenon in isolation. Yet, such a multi-hazard threat is commonly overlooked. This paper proposes an end-to-end computational framework for simulation-based consequence analysis of deteriorating structural systems subjected to earthquake-induced ground-motion sequences and chloride-induced corrosion deterioration. State-dependent (and time-dependent) fragility and vulnerability relationships are derived as part of the proposed workflow. To this end, a multivariate probabilistic seismic demand model and a collapse generalised logistic model are developed, linking the dissipated hysteretic energy in the ground-motion sequence, the maximum inter-storey drift induced by the first ground motion, the intensity measure of the second ground motion, and the corrosion deterioration level. The time-varying corrosion rate is described through a hurdle model, employing an appropriate (continuous) chloride-penetration model. Vulnerability relationships are derived by combining the developed fragility relationships and suitable building-level consequence models. Finally, the (expected) life-cycle consequences are estimated by subjecting the system to stochastic event sets, encompassing ground-motion sequences. The proposed framework is demonstrated through a case-study reinforced concrete building. Considering the interaction between seismic sequences and corrosion effects, the expected life-cycle consequences in terms of economic loss ratio are 125 % higher than those without considering any hazard interaction. These consequences are mainly dominated by the effects of the ground-motion sequences rather than those associated with corrosion deterioration.</p>}},
author = {{Otárola, Kenneth and Iannacone, Leandro and Gentile, Roberto and Galasso, Carmine}},
issn = {{0141-0296}},
keywords = {{Chloride-induced corrosion; Damage accumulation; Ground-motion sequence; Reinforced-concrete building; Time- and state-dependent fragility; Vulnerability relationship}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Engineering Structures}},
title = {{Simulation-based consequence analysis of reinforced-concrete buildings subjected to earthquake- and environment-induced damage accumulation}},
url = {{http://dx.doi.org/10.1016/j.engstruct.2024.118554}},
doi = {{10.1016/j.engstruct.2024.118554}},
volume = {{317}},
year = {{2024}},
}