Experimental Investigation of the Effect of Flow Angle of Attack on the Rate of Scour around the Slotted Bridge Pier at Different Levels of River Bend
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2014, Vol 2, Issue 12
Abstract
Scour around the bridge piers is known as a major risk that is followed by millions of dollars of costs in addition to the casualties for the replacement and improvement of bridges. Nowadays, there are different ways to control scour around the bridge pier such as using the riprap, collar, slot, or using a combination of them. In this study, the effect of slot on scour reduction around the bridge pier at 180° river bend was studied. Therefore, four models of bridge pier with slot and one without slot at three positions of 60°, 90°, and 120°from the bend of 180° and four flow angles of attack at pier as 0°, 15°, 30°, and 45°were studied. The results showed that as the flow angle of attack at pier increased, the scour depth increased. Moreover, with regard to the greater depth of scour in the first half of the bend, it is recommended to construct bridges in the second half of the bend if it is needed to construct bridge with slotted piers in the river bend.
Authors and Affiliations
Ebrahim Nohani, Mohammad Heidarnejad
Keywords
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