Seismic Vulnerability Assessment of Water Pipe Networks under Network Uncertainties
Publication: Pipelines 2021
ABSTRACT
Earthquakes disrupt the operation of critical lifelines in a community, such as underground water and gas infrastructure systems. The importance of the seismic vulnerability assessment of water pipe networks cannot be exaggerated as it has a critical role in preventive seismic rehabilitation decision-making performed to avoid costly repairs. Existing seismic vulnerability assessment methods do not consider water pipe network uncertainties (e.g., uncertainties in nodal demand, reservoir head, and pipe roughness coefficient) despite the considerable susceptibility of these assessment methods to these uncertainties. Examining the effect of network uncertainties on post-earthquake serviceability of water pipe networks is the first step towards assessing the vulnerability of water pipe networks under uncertainties. The objective of this research is to investigate the effect of network uncertainties on the post-earthquake serviceability of water networks. Demand and pipe roughness coefficient were the network parameters selected for this study. Design of the experiment, Monte Carlo simulation, and one-way analysis of variance (ANOVA) tests were used to examine the individual and combined effects of two water pipe network uncertainties (nodal demand and pipe roughness coefficient). The approach was tested on the Modena network, which is a city-scale benchmark network that is commonly used in the literature for seismic vulnerability assessment of water pipe networks. The results show that the uncertainty of these two selected network parameters has a statistically significant impact on the post-earthquake serviceability of water pipe networks. Hence, it is recommended to integrate the network uncertainties with the seismic vulnerability assessment of water pipe networks.
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Pipelines 2021
Pages: 171 - 179
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© 2021 American Society of Civil Engineers.
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Published online: Jul 29, 2021
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Cited by
- Abhijit Roy, Sushil Bhatta, Mohsen Shahandashti, Proactive Seismic Rehabilitation Decision-Making for Water Pipe Networks Considering Earthquake-Induced Transient Strains and Geotechnical Instability, ASCE Inspire 2023, 10.1061/9780784485163.112, (979-988), (2023).
- Sumaya Sharveen, Mohsen Shahandashti, Optimal Proactive Seismic Rehabilitation of Gas Pipeline Networks, Pipelines 2023, 10.1061/9780784485033.026, (240-250), (2023).
- Abhijit Roy, Jay M. Rosenberger, Mohsen Shahandashti, Impact of Water Network Uncertainties on Seismic Rehabilitation Decision-Making for Water Pipelines, Pipelines 2023, 10.1061/9780784485019.039, (364-372), (2023).