冷成型钢 L 形建筑柱的侧冲击性能
Mengyao Li1,2, Jinshan Sun1, Yi Hu2
1Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China.
Materials (Basel, Switzerland)
|October 16, 2025
概括
这项对冷成型钢 (CFS) L 形建筑柱 (LBC) 的研究发现,对抗冲击的最佳轴向压缩比为 0.3. 增加速度,尺寸和厚度可以提高抵御侧面冲击的性能.
科学领域:
- 结构工程 结构工程
- 材料科学 材料科学 材料科学
背景情况:
- 建筑结构因爆炸和车辆碰撞而面临侧面冲击的安全威胁.
- 冷成型钢 (CFS) 的L形建筑柱 (LBC) 是关键的结构部件,需要强大的抗冲击能力.
研究的目的:
- 调查和量化CFS L 形建筑柱 (LBC) 在侧面冲击下的抗冲击能力.
- 分析轴向压缩比,冲击速度和几何尺寸对CFS LBC冲击反应的影响.
主要方法:
- 对实验数据进行有限元模型 (FEM) 的开发和验证.
- 参数分析用于评估关键变量对影响性能的影响.
主要成果:
- 确定了大约0.3的最佳轴向压缩比,显著影响了峰值侧冲击力.
- 较高的冲击速度导致力和位移反应大幅增加;速度翻倍几乎使最大位移翻倍.
- 通过增加横截面尺寸,钢材厚度和减少螺丝间距,提高了抗冲击和变形能力.
结论:
- 这项研究阐明了CFS LBC在侧面冲击下的失败机制.
- 确定了影响抗冲击能力的关键参数,为CFS LBC对动态负载的设计提供了宝贵的见解.
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