Steel fenders are frequently employed in bridge pier shields to engross collision energy due to vessel impact. However, vulnerability to corrosion is a major drawback in existing steel fenders. To end this, an innovative composite fender structure consisting of corrugated steel and Preplaced Aggregate Fibre Reinforced Concrete (PAFRC) is introduced. Corrugated plates of steel are intended to absorb energy and stiff guard outer panels made with PAFRC exhibit enhanced resistance to impact and ductility. Six steel-PAFRC fenders were prepared with the steel plates of two different thicknesses, where the four top panels of the PAFRC are reinforced with short and long hooked end steel fibres while bottom panels are made with non-fibrous preplaced aggregate concrete (PAC). All steel-PAFRC fenders were tested through a drop weight impact testing device to investigate their impact behaviour and failure mechanism. Collision energy at crack initiation and the ultimate crack of PAFRC panels, crushing deformation of corrugated plates and failure configuration were also examined. Additionally, a numerical model of composite fenders was developed and verified through experimental evidence. Research revealed the crashworthiness of PAFRC panel was higher when compared to the PAC panel. The relative resistance of corrugated plates of steel and the PAFRC panels had a dramatic effect on the composite fender’s impact response.

钢质挡泥板通常用于桥墩护罩，以吸收由于船舶撞击而产生的碰撞能量。然而，易腐蚀是现有钢护舷的主要缺点。为此，引入了一种创新的复合材料挡泥板结构，该结构由波纹钢和预制骨料纤维混凝土（PAFRC）组成。瓦楞钢板旨在吸收能量，而用PAFRC制成的坚固的防护外板则具有增强的抗冲击性和延展性。用两种不同厚度的钢板制备了六个钢制PAFRC护舷板，其中PAFRC的四个顶板用短而长的钩状末端钢纤维加固，而底板则用无纤维的预制骨料混凝土（PAC）制成。所有的PAFRC钢制护舷均通过落锤冲击测试设备进行了测试，以研究其冲击性能和破坏机理。还检查了PAFRC面板在裂纹萌生和最终裂纹时的碰撞能量，波纹板的破碎变形和破坏形态。此外，开发了复合材料护舷的数值模型，并通过实验证据进行了验证。研究表明，与PAC面板相比，PAFRC面板的耐撞性更高。瓦楞钢板和PAFRC面板的相对电阻对复合挡泥板的冲击响应产生了显着影响。还检查了瓦楞纸板的破碎变形和破坏形态。此外，开发了复合材料护舷的数值模型，并通过实验证据进行了验证。研究表明，与PAC面板相比，PAFRC面板的耐撞性更高。瓦楞钢板和PAFRC面板的相对电阻对复合挡泥板的冲击响应产生了显着影响。还检查了瓦楞纸板的破碎变形和破坏形态。此外，开发了复合材料护舷的数值模型，并通过实验证据进行了验证。研究表明，与PAC面板相比，PAFRC面板的耐撞性更高。瓦楞钢板和PAFRC面板的相对电阻对复合挡泥板的冲击响应产生了显着影响。