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Hu X.-Y.,Changsha University of Science and Technology | Hu X.-Y.,Key Laboratory of Water Sediment Flood and Water Disaster Prevention of Hunan Province | Zhong J.-C.,Changsha University of Science and Technology | Yang L.-X.,Changsha University of Science and Technology | And 6 more authors.
Shuidonglixue Yanjiu yu Jinzhan/Chinese Journal of Hydrodynamics Ser. A

Sacrificial piles are the engineering measures which are built to protect bridge piers and to ensure navigation safety. To discuss the impacts of sacrificial piles on the navigation flow condition around bridge piers, a three-dimensional numerical simulation of the flow filed around the pier with sacrificial piles, based on the RNG and k-ε turbulence model, is established for calculation and analysis of the flow field characteristics under different arrangement of piles, and verifications of physical model experiments are also carried out. The results show that, after setting up sacrificial piles, the transverse flow in front of the pier has been effectively decreased, the flow pattern on both sides of the pier has been improved, the insecurity area of navigation around the pier has been effectively reduced, and the insecurity area is correlated with the quantity of piles and the distance between pier and piles. When the distance between the bridge pier and piles is placed two times the width of the bridge pier, the maxium insecurity width of navigation around the pier can be reduced 26.4% based on the computation and experiment results. © 2015, Publishing House for Journal of Hydrodynamics. All right reserved. Source

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