Impact resistance and damage assessment of steel beams with different web openings

• Published in: International journal of steel structures Vol. 24; no. 2; pp. 405 - 416
• Main Authors: Chen, Huayan, Huang, Jianzhong, Fu, Chaojiang, Wang, Sixiang, Wang, Fengxuan, Luo, Caisong, Wang, Bizhen
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.04.2024; Springer Nature B.V; 한국강구조학회
• Subjects: Civil Engineering; Damage assessment; Energy absorption; Engineering; Hammers; Impact damage; Impact loads; Impact resistance; Impact velocity; Materials Science; Numerical models; Solid Mechanics; Steel beams; Web openings; 토목공학; Web-opening steel beam; Numerical simulation; Impact performance; Damage analysis; Velocity–mass curves
• ISSN: 1598-2351; 2093-6311
• DOI: 10.1007/s13296-024-00824-9

To investigate the impact resistance of steel beams with different web openings, falling-hammer impact trials and numerical models analyses were performed, focusing on the impact energy, inter-opening space, and opening diameter. The impact resistance of steel beams with different web openings was analyzed, and damage-assessment curves for web-opening steel beams (WOSBs) under impact loads were established. The results showed that web-hexagonal-opening steel beams (WHOSBs) yielded greater damage-related deformation than web-circular-opening steel beams (WCOSBs) for the same impact energy. The average maximum mid-span displacement of the WCOSBs under the falling-hammer was 86.49% that of the WHOSBs, whereas the average energy absorption rate was 6.07% higher. The WCOSBs were more resistant to impacts than the WHOSBs. The impact velocity and mass were the key damage-assessment parameters, and velocity–mass damage-assessment curves and determination equations were established according to on the WOSBs’ maximum mid-span displacement under hinge-supported restraints at both ends. Thus, this study will serve as a reference for assessing the damages of WOSBs subjected to impacts.