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LOCAL SCOUR AROUND BRIDGE ABUTMENTS 总被引:2,自引:0,他引:2
Er. Shri Ram CHAURASIA Pande B.B. LAL Assistant Professor Civil Engineering Department Madan Mohan Malaviya Engineering College Gorakhpur- 《国际泥沙研究》2002,17(1)
1 INTRODUCTION The protrusion of a bridge abutment or a spur dike into the main channel creates a disturbance and obstruction to the otherwise equilibrium state of sediment transportation in an alluvial river. The flow accelerates and separates at the upstream face of the abutment as it moves past the obstacle, creating a vortex trail that moves downstream in a direction approximately perpendicular to the structure. The result is that the bed around the structure is eroded locally. The l… 相似文献
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