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Article

Integrating Structural Resilience in the Design of Urban Drainage Networks in Flat Areas Using a Simplified Multi-Objective Optimization Framework

1
Institute of Urban Water Management, Department of Civil Engineering, TU Kaiserslautern, 67663 Kaiserslautern, Germany
2
Department of Stochastic Simulation and Safety Research (LS3), Faculty of Civil and Environmental Engineering, University of Stuttgart, 70569 Stuttgart, Germany
3
Faculty of Civil Engineering and Architecture, Shahid Chamran University of Ahvaz, Ahvaz 61357831351, Iran
*
Author to whom correspondence should be addressed.
Academic Editor: Fouad H. Jaber
Water 2021, 13(3), 269; https://doi.org/10.3390/w13030269
Received: 19 November 2020 / Revised: 16 January 2021 / Accepted: 20 January 2021 / Published: 22 January 2021
(This article belongs to the Special Issue Urban Drainage Systems)
Structural resilience describes urban drainage systems’ (UDSs) ability to minimize the frequency and magnitude of failure due to common structural issues such as pipe clogging and cracking or pump failure. Structural resilience is often neglected in the design of UDSs. The current literature supports structural decentralization as a way to introduce structural resilience into UDSs. Although there are promising methods in the literature for generating and optimizing decentralized separate stormwater collection systems, incorporating hydraulic simulations in unsteady flow, these approaches sometimes require high computational effort, especially for flat areas. This may hamper their integration into ordinary commercially designed UDS software due to their predominantly scientific purposes. As a response, this paper introduces simplified cost and structural resilience indices that can be used as heuristic parameters for optimizing the UDS layout. These indices only use graph connectivity information, which is computationally much less expensive than hydraulic simulation. The use of simplified objective functions significantly simplifies the feasible search space and reduces blind searches by optimization. To demonstrate the application and advantages of the proposed model, a real case study in the southwest city of Ahvaz, Iran was explored. The proposed framework was proven to be promising for reducing the computational effort and for delivering realistic cost-wise and resilient UDSs. View Full-Text
Keywords: urban drainage systems; graph theory; decentralization; multi-objective optimization; layout; resilience urban drainage systems; graph theory; decentralization; multi-objective optimization; layout; resilience
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MDPI and ACS Style

Bakhshipour, A.E.; Hespen, J.; Haghighi, A.; Dittmer, U.; Nowak, W. Integrating Structural Resilience in the Design of Urban Drainage Networks in Flat Areas Using a Simplified Multi-Objective Optimization Framework. Water 2021, 13, 269. https://doi.org/10.3390/w13030269

AMA Style

Bakhshipour AE, Hespen J, Haghighi A, Dittmer U, Nowak W. Integrating Structural Resilience in the Design of Urban Drainage Networks in Flat Areas Using a Simplified Multi-Objective Optimization Framework. Water. 2021; 13(3):269. https://doi.org/10.3390/w13030269

Chicago/Turabian Style

Bakhshipour, Amin E., Jessica Hespen, Ali Haghighi, Ulrich Dittmer, and Wolfgang Nowak. 2021. "Integrating Structural Resilience in the Design of Urban Drainage Networks in Flat Areas Using a Simplified Multi-Objective Optimization Framework" Water 13, no. 3: 269. https://doi.org/10.3390/w13030269

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