عمران و پروژه
اعتبار،چابکی،پاسخگویی

Study of Numerically Ability to Estimate Scouring Around Bridge Piers in Extreme Rainfall Conditions(Case study: Persian Gulf water transfer project)

https://doi.org/10.22034/cpj.2024.452007.1268
دوره 6، شماره 3 - شماره پیاپی 61
خرداد 1403
صفحه 11-28
عمران و پروژه

نوع مقاله : مقاله پژوهشی

نویسندگان

روزبه اقامجیدی 1
امیر کمانبدست 2

1 استادیار، دانشکده مهندسی، دانشگاه آزاد اسلامی ‌‌واحد سپیدان، فارس، ‌ایران

2 استادیار،گروه مهندسی عمران، واحد بیضا، دانشگاه آزاد اسلامی، بیضا، ایران

چکیده
In this study, the effect of change of flow discharge on the scouring around the piers of the fifth bridge of Dezful was investigated using the Hsec-RAS numerical model. For this purpose, a hydraulic model was created from the range of the river in which the bridge is located in the software by using field data. Then, by entering the data on the scouring of the bridge bases for the discharge of 25 to 1850 m3/s with different time steps, the effect of change of flow discharge on the scour around the middle and lateral piers of the bridge was investigated. The results of numerical model show a trend The increase was such that in low to moderate discharges (329m3/s) the scouring rate around the middle piers had the highest value, but in high discharges and flood conditions the scurry in the right support had the highest value, also up to 1630 m3/s flood conditions, the scouring rate in the left support had the lowest value, which was due to the morphology of the river bed and the Conditions are the creation of secondary currents in the arc.

کلیدواژه‌ها

Hec-Ras numerical model
Discharge changes
Bridge base
Flood
Scour
موضوعات

عنوان مقاله English

study of numerically ability to estimate scouring around bridge piers in extreme rainfall conditions

نویسندگان English

Roozbeh Aghamajidi 1
Amir Kamanbedast 2
1 Assistant Professor, Faculty Of Engineering, Islamic Azad University, Sepidan Unit, Fars,
2 Assistant professorDepartment of Civil Engineering, Bey. C., Islamic Azad University, Beyza, Iran
چکیده English

In this study, the effect of change of flow discharge on the scouring around the piers of the fifth bridge of Dezful was investigated using the Hsec-RAS numerical model. For this purpose, a hydraulic model was created from the range of the river in which the bridge is located in the software by using field data. Then, by entering the data on the scouring of the bridge bases for the discharge of 25 to 1850 m3/s with different time steps, the effect of change of flow discharge on the scour around the middle and lateral piers of the bridge was investigated. The results of numerical model show a trend The increase was such that in low to moderate discharges (329m3/s) the scouring rate around the middle piers had the highest value, but in high discharges and flood conditions the scurry in the right support had the highest value, also up to 1630 m3/s flood conditions, the scouring rate in the left support had the lowest value, which was due to the morphology of the river bed and the Conditions are the creation of secondary currents in the arc.

کلیدواژه‌ها English

  • Hec-Ras numerical model
  • Discharge changes
  • Bridge base
  • Flood
  • Scour

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Civil and Project Journal, 2024, 6(3)
https://doi.org/10.22034/cpj.2024.452007.1268
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  • تاریخ دریافت 23 اسفند 1402
  • تاریخ بازنگری 24 فروردین 1403
  • تاریخ پذیرش 28 فروردین 1403
  • تاریخ اولین انتشار 28 فروردین 1403
  • تاریخ انتشار 01 خرداد 1403

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