实验理论调查的强度和可变形的全尺寸的第二代形板样本的实验理论调查
Volodymyr Semko1, Nataliia Mahas2, Pavlo Semko3
1Department of Structural Engineering, Institute of Building Engineering, Faculty of Civil and Transport Engineering, Poznan University of Technology, Piotrowo Street 5, 61-138 Poznan, Poland.
Materials (Basel, Switzerland)
|September 27, 2025
概括
全面测试显示,钢铁梯形轮板 (STPS) 具有比欧元代码计算预测的更高的可变性和更早的塑料变形. 这些发现突出了理论模型与现实世界性能之间的差异.
科学领域:
- 结构工程 结构工程
- 材料科学 材料科学 材料科学
- 建筑技术 建筑技术 建筑技术
背景情况:
- 钢铁梯形造型型板 (STPS) 是一种常见的建筑材料,通常被视为简单的组件,而不是结构元素.
- 目前的设计实践严重依赖于基于EN 1993-1-3的制造商提供的表格,对全尺寸测试的实验验证有限.
- 在将理论预测与STPS在负载下的实际实验行为进行比较时存在差距.
研究的目的:
- 实验性地研究完整尺寸的第二代STPS标本的承载能力和可变性.
- 将实验结果与基于EN 1993-1-3方法的理论计算进行比较.
- 识别和量化预测和实际STPS性能之间的差异.
主要方法:
- 在双跨度加载方案下对12个全尺寸STPS标本进行测试.
- 测量每个样本的中跨度和支处的沉降的偏移.
- 与理论模型相比,弹性和塑性变形特征的分析.
主要成果:
- 测试的STPS标本中的一半表现出比预测更高的弹性变形性,偏差在16%到105%之间.
- 在12个标本中的11个中,塑料变形比理论上预测的更早地开始.
- 在基于欧元代码的计算和关于偏和塑性变形开始的实验结果之间观察到显著的差异.
结论:
- 实验结果表明,STPS可能比目前基于欧元码的表格更容易变形,更容易发生早期的塑化.
- 该研究强调需要重新评估STPS的设计方法,以更好地反映现实世界的性能.
- 结果为工程师和制造商提供了有价值的科学数据和实用见解,为STPS工作提供了价值.
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