在冲击负载下通过生物灵感的蜂柱薄壁结构 (BHTS) 保护RC柱
Shijie Wang1, Hongxiang Xia2,3, Yuncui Zong4
1College of Civil and Architectural Engineering, Heilongjiang Institute of Technology, Harbin 150050, China.
Biomimetics (Basel, Switzerland)
|December 27, 2024
概括
一个生物灵感的蜂巢柱薄壁结构 (BHTS) 有效地保护钢筋混凝土桥梁支柱 (RCBP) 免受车辆冲击. 这种BHTS吸收了大量的冲击能量,减少了力,并防止了灾难性的剪切故障.
科学领域:
- 结构工程 结构工程
- 生物启发材料 生物启发材料
- 冲击力学 冲击力学
背景情况:
- 钢筋混凝土桥梁支柱 (RCBP) 容易受到车辆冲击造成的损坏.
- 现有的保护措施可能不足以应对显著的过载影响.
- 生物灵感设计为结构保护提供了新的解决方案.
研究的目的:
- 评估生物灵感的蜂柱薄壁结构 (BHTS) 作为RCBP的缓冲中间层的保护效果.
- 分析RC柱在不同冲击能量下的动态响应和故障机制.
- 量化BHTS的能量吸收和减力能力.
主要方法:
- 用BHTS缓冲区间层制造1:10尺度RC柱的模型.
- 钢球撞击测试是在1.0-3.5米 (低能耗) 和20.0米 (高能耗) 的同等高度进行的.
- 使用数值建模来分析动态反应和能量吸收特征.
主要成果:
- 在高能量撞击 (20米) 时,BHTS吸收了撞击动能82.33%.
- BHTS显著降低了撞击力 (77.27%),惯性力 (86.51%) 和基础剪切力 (64.86%).
- BHTS有效地将故障模式从剪切转变为曲,保护RC柱.
结论:
- 生物灵感的蜂巢柱薄壁结构证明了钢筋混凝土桥梁支柱的特殊保护能力.
- BHTS是一种高效的轻量级缓冲中间层,用于减轻车辆冲击造成的损坏.
- 这项研究为实际工程应用中的防撞设计提供了宝贵的见解.
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