An efficient optimization framework for Urban drainage system design

Abstract

The rapid urbanization process has been putting great pressure on the urban drainage system, which was built a long time ago and is degraded. In this study, an efficient optimization framework for Urban drainage systems is introduced. The design of a drainage network is formulated as an optimization problem, where the total construction costs of the network are minimized by choosing the cross-sections of pipes from a given discrete list. The hydraulic behaviors in the system are predicted by using the 1D sewer software Storm Water Management Model (SWMM). The proposed optimization problem is solved using the Rao algorithm. To demonstrate the efficiency of the proposed framework, an urban drainage system in Chuncheon-si, Gangwon-do, Korea is studied. The numerical results proved that the proposed method is efficient and can be considered an effective tool for managers in building urban infrastructure systems.