Experimental Study on Aspect Ratio and Velocity Intensity of Scour Around Submerged Pile Groups

Submerged pile groups are important components of complex piers in hydraulic engineering and analogs for a range subsea structures. These may sustain severe damages from local scour. The velocity intensity ( U / c , the ratio critical to mean velocity) aspect H D p height diameter) variables this scour process. However, previous studies on around submerged were conducted clear-water conditions < 1). In addition, many research being shallow water flow conditions, which cannot eliminate effect depth Thus, these directly be applied live-bed To expand groups, flume experiments with uniform quartz sand both conditions. Pile different heights adopted as experimental models. An improved time factor structures is determined present extrapolate work equilibrium depth. This new then tested data literature. tests demonstrate that can reliably predict process Empirical relationships effects studied including depth, area, volume presented. Different methods compared based work. Furthermore, correction coefficient proposed illustrate Then, equations area derived according experiments.