在横冲击后,对 CFDST 柱的正方形的正方形轴向压缩承载能力的数值模拟
Jinlong Guo1, Pingjie Li2, Shuang Pan3,4
1College of Engineering, Fujian Jiangxia University, Fuzhou, 350108, People's Republic of China. cvjlguo@fjjxu.edu.cn.
Scientific reports
|July 5, 2025
概括
方形中的方形混凝土填充的双皮钢管 (CFDST) 柱子在侧面撞击后的轴承容量减少. 影响这种剩余容量的关键因素包括冲击能量,细度和材料强度.
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:
- 正方形中的正方形混凝土填充双皮钢管 (CFDST) 柱提供结构优势.
- 了解它们在侧面撞击后的性能对于安全和设计至关重要.
研究的目的:
- 为了研究CFDST柱子侧面冲击后的轴向压缩行为.
- 分析剩余的轴向压缩承载能力和故障机制.
主要方法:
- 开发和验证一个精确的有限元数值模型.
- 分析垂直负载-轴位移曲线,故障模式和应力分布.
- 参数分析,以评估关键设计参数的影响.
主要成果:
- 在侧面撞击后,CFDST柱体表现出曲失效模式,具有局部缩和曲.
- 其余容量因撞击能量的增加,细度比率和混凝土强度而减少.
- 更高的钢铁强度显著提高了剩余的轴向压缩承载能力.
结论:
- 这项研究提供了关于CFDST柱子撞击后行为的见解.
- 为了估计剩余的轴向压缩承载能力,提出了一个简化的公式.
- 发现帮助设计和评估受冲击负荷影响的CFDST柱子.
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