EVALUATION AND COMPARISON OF COLLAR AND COLLAR WITH SLOT METHODS IN REDUCING LOCAL SCOUR OF CYLINDRICAL BRIDGE PIERS
محل انتشار: مجله تحقیقات کاربردی، دوره: 1، شماره: 5
سال انتشار: 1394
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 612
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شناسه ملی سند علمی:
JR_ARJ-1-5_010
تاریخ نمایه سازی: 26 اسفند 1394
چکیده مقاله:
Many researchers have focused in recent years on the phenomenon of scour and providing different methods to control this phenomenon. The use of facilities, such as collar and slot on the pier to provide stability foe bridges can be appropriate ways to achieve this goal. In this study, with creating aslot on the pier and combining the collar and the slot, the impact of these two methods together to reduce the scour rate was investigated. The resultsshowed that the square collar has a better performance than the circular collar in reducing the depth of scour due to having sharp edges. Combinedmethods are more effective than other methods, and the square collar with a slot method have a greater impact than other approaches so that in this method, the scour depth is reduced up to 80%.
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نویسندگان
Ebrahim Nohani
Department of Hydraulic Structures, Dezful Branch, Islamic Azad University, Dezful, Iran.
bahram bahadoribirgani
Khouzestan water and power institute of research and higher training University, Ahwaz, Iran.
Reza Hajisharafi
Department of Hydraulic Structures, Dezful Branch, Islamic Azad University, Dezful, Iran.