This study attempts to reduce scour depth due to localised scour around a bridge pier by introducing Epoxidised Natural Rubber Alumina Nanoparticles (ENRAN) sheet acting as bridge pier sheathing. The performance of the ENRAN sheet was assessed based on the configuration of slots and by roughening with 1 cm diameter spheres. Experiments were conducted with pier shapes of cylindrical, square, and rectangular using a fixed sediment bed with median grain size (600 µm). Coarser slot spatial arrangement is more efficient in reducing 17% scour depth (from the non-sheathed pier), whereas closer placement of the roughened element has better performance up to 27%. Experiments were extended to investigate the combined slotted-roughened configuration, where higher scour reduction (35%) was observed, even for a rectangular shape. Not only the flexibility of the ENRAN sheet allows for installation for any pier shape, but also it’s durable characteristics proved ENRAN as an attractive method, providing self-protection to the bridge pier to minimise scouring.

本研究试图通过引入环氧化天然橡胶氧化铝纳米颗粒 (ENRAN) 板作为桥墩护套来减少由于桥墩周围的局部冲刷引起的冲刷深度。ENRAN 片材的性能基于槽的配置和通过 1 厘米直径球体的粗糙化进行评估。使用具有中值粒度 (600 µm) 的固定沉积床，对圆柱形、方形和矩形的墩形状进行了实验。较粗的槽空间布置可更有效地减少 17% 的冲刷深度（来自无护套桥墩），而更靠近放置粗化元件的性能更好，高达 27%。实验扩展到研究组合开槽粗化配置，其中观察到更高的冲刷减少 (35%)，即使对于矩形也是如此。