Details
| Original language | English |
|---|---|
| Article number | 102311 |
| Journal | Structural safety |
| Volume | 101 |
| Early online date | 24 Dec 2022 |
| Publication status | Published - Mar 2023 |
Abstract
Risk assessment of spatially distributed infrastructure systems under natural hazards shall treat the performance of individual components as stochastically correlated due to the common engineering practice in the community including similarities in building design code, regulatory practices, construction materials, construction technologies, and the practices of local contractors. Modelling the spatially correlated damages of an infrastructure system with many components can be computationally expensive. This study addresses the scalability issue of risk analysis of large-scale systems by developing an interpolation technique. The basic idea is to sample a portion of components in the systems and evaluate their correlated damages accurately, while the damages of remaining components are interpolated from the sampled components. The new method can handle not only linear systems, but also systems with complex connectivity such as utility networks. Two examples are presented to demonstrate the proposed method, including cyclone loss assessment of the building portfolios in a virtual community, and connectivity analysis of an electric power system under a scenario cyclone event.
Keywords
- Community resilience, Probabilistic risk assessment, Random field, Structural reliability
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
- Engineering(all)
- Safety, Risk, Reliability and Quality
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Structural safety, Vol. 101, 102311, 03.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Scalable risk assessment of large infrastructure systems with spatially correlated components
AU - Zeng, Diqi
AU - Zhang, Hao
AU - Dai, Hongzhe
AU - Beer, Michael
N1 - Funding Information: This research has been supported by the Faculty of Engineering and IT PhD Research Scholarship from the University of Sydney, Australia . This support is gratefully acknowledged.
PY - 2023/3
Y1 - 2023/3
N2 - Risk assessment of spatially distributed infrastructure systems under natural hazards shall treat the performance of individual components as stochastically correlated due to the common engineering practice in the community including similarities in building design code, regulatory practices, construction materials, construction technologies, and the practices of local contractors. Modelling the spatially correlated damages of an infrastructure system with many components can be computationally expensive. This study addresses the scalability issue of risk analysis of large-scale systems by developing an interpolation technique. The basic idea is to sample a portion of components in the systems and evaluate their correlated damages accurately, while the damages of remaining components are interpolated from the sampled components. The new method can handle not only linear systems, but also systems with complex connectivity such as utility networks. Two examples are presented to demonstrate the proposed method, including cyclone loss assessment of the building portfolios in a virtual community, and connectivity analysis of an electric power system under a scenario cyclone event.
AB - Risk assessment of spatially distributed infrastructure systems under natural hazards shall treat the performance of individual components as stochastically correlated due to the common engineering practice in the community including similarities in building design code, regulatory practices, construction materials, construction technologies, and the practices of local contractors. Modelling the spatially correlated damages of an infrastructure system with many components can be computationally expensive. This study addresses the scalability issue of risk analysis of large-scale systems by developing an interpolation technique. The basic idea is to sample a portion of components in the systems and evaluate their correlated damages accurately, while the damages of remaining components are interpolated from the sampled components. The new method can handle not only linear systems, but also systems with complex connectivity such as utility networks. Two examples are presented to demonstrate the proposed method, including cyclone loss assessment of the building portfolios in a virtual community, and connectivity analysis of an electric power system under a scenario cyclone event.
KW - Community resilience
KW - Probabilistic risk assessment
KW - Random field
KW - Structural reliability
UR - http://www.scopus.com/inward/record.url?scp=85145656150&partnerID=8YFLogxK
U2 - 10.1016/j.strusafe.2022.102311
DO - 10.1016/j.strusafe.2022.102311
M3 - Article
AN - SCOPUS:85145656150
VL - 101
JO - Structural safety
JF - Structural safety
SN - 0167-4730
M1 - 102311
ER -