A Conceptual Model for Assessing Risks and Building Resilience for Urban Infrastructure System: An Indonesian Case

CITRA S. ONGKOWIJOYO - PhD Completion Seminar

Melbourne School of Design - Japanese Room

Abstract: The concept of urban infrastructure (UI) resilience has been introduced and applied to minimize losses from disturbances during extreme events. While numerous approaches exist in disaster management literature, robustness and applicability of any particular approach for supporting context specific effective recovery strategies are not quite understood. While it is acknowledged that resilience concept interrelated highly with risk management, nonetheless, conventional resilience analysis models lack to consider risk assessment as crucial metric within resilience analysis bodies. The challenge that experts faced is how best to develop and integrate the general metrics of risk assessment with resilience analysis model which capable of capturing and mimicing UI system in real life circumstances, and promote the UI resilience. This research develops a novel empirical resilience analysis framework for measuring UI system. The model rooted in the well-established risk criticality model integrated with the modified resilience analysis includes both shock and stress impact as well as the scenario-based recovery strategies. To validate and exemplify the model applicability, a numerical example and simulation in Surabaya city (Indonesian second largest city) water supply infrastructure system as a case study is applied and analyzed. The advantages of the conceptual models are shown by its capability to capture the uncertainty of risk impact, system capacity for assessing the disturbances, and devising recovery strategies towards enhancing UI system robustness. This research contributes a practical tool that can be applied to promote the concept of UI resilience in a way that assists local and authorities, and community leaders to develop more suitable decision making towards recovery and restoration policies, programs, strategies and plans.

Biography: Citra S. Ongkowijoyo obtained his ‘B.Eng’ degree in Civil Engineering from Petra Christian University (Surabaya, Indonesia) and ‘M.Sc.Eng’ in Construction Engineering from National Taiwan University of Science and Technology (Taipei, Taiwan). Currently, he is pursuing his PhD degree in The University of Melbourne (Melbourne, Australia) under the supervision of Dr. Hemanta Doloi. During his study in The University of Melbourne, he ever selected as University of Melbourne representative with full scholarship to participate the International ‘Asian Pacific Rim University (APRU)-Multi Hazard Summer School in Sendai, Tohoku-Japan. Regarding his research, he has presented his research both locally and abroad, including Auckland, New Zealand and Puerto Rico (United States), and has most recently been accepted to publish (and present) another two papers in the 7th International Conference on Building Resilience (ICBR) Conference in Thailand later this year.

Supervisor/s:
Dr. Hemanta Doloi

Advisory Committee:
A/Prof. Alan March
Dr. Toong-Khuan Chan
Dr. Anna Hurlimann