Abstract
ABSTRACT Local scouring is a major cause of instability for BSIPs. This paper investigates the effects of foundation diameter (D), installation distance (d), water depth (H), and median particle size (d50 ) on local scouring around the BSIP during the installation of a monopile. The results indicate that scour holes are found at the corners of the mat. Scour depth on the front side of the mat decreases and then increases as the diameter increases, while the scour depth on the rear side gradually decreases as D increases. Moreover, appropriate d can effectively reduce scour depth, and increasing H can reduce scour depth to a certain extent. Increasing d50 has the effect of decreasing scouring and increasing deposition. Finally, an empirical relationship between the scour depth of BSIP and dimensionless parameters is obtained. These findings can support the engineering application of similar platforms.
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