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Proposed resilience index of water lifeline systems

Abraham Matthew Sagum Carandang (Department of Civil Engineering, De La Salle University, Manila, Philippines)
Lessandro Estelito O. Garciano (Department of Civil Engineering, De La Salle University, Manila, Philippines)
Osamu Maruyama (Faculty of Engineering, Graduate School of Engineering, Tokyo City University, Setagaya-ku, Japan)
Richard De Jesus (Department of Civil Engineering, De la Salle University, Manila, Philippines)

International Journal of Disaster Resilience in the Built Environment

ISSN: 1759-5908

Article publication date: 2 October 2020

Issue publication date: 24 May 2021

104

Abstract

Purpose

Water distribution networks (WDNs) must deliver water to its customers 24/7. Disruption of this important service after a strong seismic event impedes post-disaster activities and poses health and sanitation problems. Hence, WDNs must be able to quickly restore services after the occurrence of a major seismic event. This ability to return the water service can be a metric for resilience. The purpose of this paper is to quantify the resilience by developing a framework that translates various restoration strategies into an improved resilience measure for a multisource WDN.

Design/methodology/approach

This paper used a quantitative risk assessment method in developing the framework for the resilience quantification of WDN. Prim’s algorithm, Horn’s algorithm and maximum slope method are used for the restoration analysis conducted in this study.

Findings

This paper provides resilience indices of the WDN for each repair scenarios. Then, the resilience indices are used to determine the most efficient and optimized repair scenario to restore the hypothetically damaged WDN owing to Level 1 and Level 2 seismic events.

Research limitations/implications

The developed framework of this study only focuses on the robustness, rapidity and resourcefulness properties of resilience.

Practical implications

This study aims to help the water district in the maintenance, repair and evaluation of WDN against seismic events. The results from the study can be used in preparing the disaster management plan of the local water district to repair possible pipelines. This study also serves as a starting point to more complex and comprehensive research about the resilience quantification of WDNs with the consideration of optimal restoration sequence in the future.

Originality/value

The developed framework in the resilience quantification of WDN is original, as it uses optimal restoration strategies to represent the rapidity property of resilience.

Keywords

Acknowledgements

The Engineering Research and Development for Technology and Department of Science and Technology in the Philippines are recognized for funding this study. Through the support of these agencies, this study was accomplished.

Citation

Carandang, A.M.S., Garciano, L.E.O., Maruyama, O. and De Jesus, R. (2021), "Proposed resilience index of water lifeline systems", International Journal of Disaster Resilience in the Built Environment, Vol. 12 No. 3, pp. 253-264. https://doi.org/10.1108/IJDRBE-04-2020-0030

Publisher

:

Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited

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