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

IF 1.1 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY International Journal of Steel Structures Pub Date : 2024-03-20 DOI:10.1007/s13296-024-00824-9

Huayan Chen, Jianzhong Huang, Chaojiang Fu, Sixiang Wang, Fengxuan Wang, Caisong Luo, Bizhen Wang

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Abstract

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.

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不同腹板开孔钢梁的抗冲击性和损伤评估

摘要为研究不同腹板开孔钢梁的抗冲击性能，进行了落锤冲击试验和数值模型分析，重点关注冲击能量、开孔间距和开孔直径。分析了不同腹板开孔钢梁的抗冲击性能，并建立了腹板开孔钢梁（WOSB）在冲击荷载下的损伤评估曲线。结果表明，在相同的冲击能量下，腹板六边形开口钢梁（WHOSBs）比腹板圆形开口钢梁（WCOSBs）产生更大的破坏相关变形。在落锤作用下，WCOSB 的平均最大中跨位移是 WHOSB 的 86.49%，而平均能量吸收率则高出 6.07%。与 WHOSB 相比，WCOSB 的抗冲击能力更强。冲击速度和质量是关键的破坏评估参数，根据WOSBs在两端铰链支撑约束下的最大跨中位移，建立了速度-质量破坏评估曲线和确定方程。因此，本研究将为评估受到冲击的 WOSB 的损坏情况提供参考。

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来源期刊

International Journal of Steel Structures 工程技术-工程：土木

CiteScore

2.70

自引率

13.30%

发文量

122

审稿时长

12 months

期刊介绍： The International Journal of Steel Structures provides an international forum for a broad classification of technical papers in steel structural research and its applications. The journal aims to reach not only researchers, but also practicing engineers. Coverage encompasses such topics as stability, fatigue, non-linear behavior, dynamics, reliability, fire, design codes, computer-aided analysis and design, optimization, expert systems, connections, fabrications, maintenance, bridges, off-shore structures, jetties, stadiums, transmission towers, marine vessels, storage tanks, pressure vessels, aerospace, and pipelines and more.