Numerical Rehabilitation in Stream Crossings After the February 6, 2023 Earthquakes
Abstract
Earthquakes can cause topographic changes and increase the flood risk by changing the river channel structure and route. Pazarcık and Elbistan earthquakes on February 6, 2023 are also flood-triggering earthquakes. Numerical solutions were carried out with HEC-RAS software for the flood effects of these earthquakes. The study area is the Sarsap train station area in Malatya province. A bridge structure was modeled over Eskiköprü Stream (Kuruçay) to provide an uninterrupted connection from the station to the highway after the earthquake. Flood recurrence flows were calculated using the Dsi Synthetic Method. Manning roughness coefficient was found according to Modified Cowan Method. Solutions were taken for 33 sections according to the 100-year flood flow. As a result, water surface profiles were obtained in all sections and the flow easily passed through all sections, including the bridge section. It can said that this study will form an important basis for post-earthquake rehabilitation studies.
Keywords
earthquake, eskikopru stream, hec-ras, flood analysis, stream regulation
Thanks
I would like to thank the General Directorate of State Hydraulic Works, Elazığ 9th Regional Directorate, and TCDD 5th Regional Directorate for the information I received for the study.
References
- Ağıralioğlu, N. (2007). Baraj Planlama ve Tasarımı (Cilt I, II, III). İstanbul, Su Vakfı Yayınları.
- Alaghmand, S., Abdullah, R. B., Abustan, I., & Vosoogh, B. (2010). GIS-based river flood hazard mapping in urban area (a case study in Kayu Ara river basin, Malaysia). International Journal of Engineering and Technology, 2(6), 488-500. http://www.enggjournals.com/ijet/docs/IJET10-02-06-23.pd.
- Baykal, T., Terzi, Ö., & Şener, E. (2022). STRUCTURAL FLOOD ANALYSIS BASED ON THE HYDRAULIC MODEL OF THE KÜÇÜK AKSU RIVER. Mühendislik Bilimleri ve Tasarım Dergisi, 10(3), 1084-1096. doi: 10.21923/jesd.1099665.
- Deng, X. Y., & Li, W. F. (2012). Application of HEC-RAS model for evaluation of flood control of Mijiang Super-long Bridge. Southto-North Water Diversion and Water Science and Technology, 1, 034.
- Devlet Su İşleri, Dere Yatakları İçin Pürüzlülük Katsayısı Belirleme Kılavuzu, Sayfa 3, 2016.
- Devlet Su İşleri Genel Müdürlüğü, Islah, Taşkın ve Rüsubat Kontrol Yapılarında Proje Debisi Hesap ve Seçim Kriterleri, Temel Hidrolik Tasarım Kriterleri ile Akarsu Yataklarında Islah Kesitinin Boyutlandırılması, Resmi Gazete 3 Mayıs 2019.
- DSİ 50. YIL, Hidroloji Şube Müdürlüğü, 2004.
- Hameed, L. K., & Ali, S. T. (2013). Estimating of Manning’s roughness coefficient for Hilla River through calibration using HECRAS model. Jordan Journal of Civil Engineering, 7(1), 44-53. doi:10.12816/0000543.
- Hırca, T., & Sönmez, O. (2019). Determination of flood inundation maps: a case study of Akyazi industrial zone. Sakarya University Journal of Science, 23(2), 301-307. doi: 10.16984/saufenbilder.475974.
- Efe, H., & Önen, F. (2015). Batman Çayı’nın taşkın analizinin HEC-RAS programıyla yapılması. Dicle Üniversitesi Mühendislik Fakültesi Mühendislik Dergisi, 6(2), 83-92.