Combining Structural and Non-Structural Measures for Optimal Management of Urban Surface Runoff Collection (Case Study: Ariafar Bridge in Mianroud Canal)

Document Type : Research


1 PhD Student of Civil Engineering, Construction Management, Department of Civil Engineering, Roudehen Branch, Islamic Azad University, Roudehen, Iran.

2 Assistant Professor, Department of Civil Engineering, Roudehen Branch, Islamic Azad University, Roudehen, Iran.


Today, various structural and non-structural solutions are used to control and reduce the negative effects of floods in investigation and executive projects. But what is certain is that the optimal solution to minimize flood damage is a combination of structural and non-structural methods (planning and response measures). It is essential to provide these solutions in a metropolis like Tehran because the hydrographic network of Tehran runoff is sometimes incomplete during floods and is accompanied by severe flooding. Therefore, in this study, a combination of the mentioned methods were used for a part of Tehran's Mianroud canal (as one of the most important surface water management facilities in the catchment area of west Tehran) called Ariafar Boulevard Bridge. For this purpose, in the first step, severe accident hotspots along the route were investigated and then the capacity of passing on accident-prone routes was evaluated according to hydrological information under different scenarios (discharges with return periods of 5, 10, 25 and 100 -years). The results show the adequacy of channel capacity for a 10-year return period. But for the 25, 50 and 100-year discharge, we will face 8.88%, 28.93% and 50.81% capacity shortages, respectively. In the second step, considering the structural solutions, the methods of eliminating the capacity shortage of bottlenecks, including correcting the route, installing auxiliary routes, or destroying bridges that prevented the transfer of runoff in the canal route were carefully examined. The results showed that the combined use of structural and non-structural methods increases the effectiveness and significantly reduces the risk of flood spreading in the city.


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