关于设计轴向压缩和单面连接异常压缩的整体稳定性能力的研究,腿角等于腿角
JingJing Han1,2,3, Wei Zhang4,5, LuFeng Yang6
1Key Laboratory of Disaster Prevention and Structural Safety of China Ministry of Education, School of Civil Engineering and Architecture, Guangxi University, Nanning, 530004, China. hanjingjing_stu@163.com.
Scientific reports
|October 23, 2025
概括
这项研究比较了八个国际代码,用于在压缩下等脚角的稳定性. 它提出了对轴向和偏心压缩的修订设计方法,提高了结构工程的准确性.
科学领域:
- 结构工程 结构工程
- 钢结构结构 钢结构结构
- 稳定性分析 稳定性分析
背景情况:
- 当前的设计规范在计算等脚角的整体稳定性能力方面表现出显著的差异.
- 现有的异常压缩方法,特别是单面连接,可能无法准确地反映现实世界的工程场景.
- 需要改进设计方法,以确保钢制角度结构的安全性和效率.
研究的目的:
- 为了比较和评估八个国际设计规范在轴向和偏心压缩下等脚角的整体稳定性.
- 为了确定代码计算能力和实验结果之间的差异.
- 提出修订和新的设计方法,以提高结构稳定性计算的准确性.
主要方法:
- 分析了712次轴向压缩试验和226次偏心压缩试验.
- 从中国,欧洲,澳大利亚和美国代码中对设计条款的比较评估.
- 基于实验数据和现有代码原则 (例如,N-M相互作用) 的新设计方法的开发和验证.
主要成果:
- 在八个审查的代码中发现了计算稳定性能力的显著差异.
- 在等脚角度的轴向压缩设计中观察到一种普遍的保守主义趋势.
- 在一些代码中使用的简化轴向压缩公式被发现偏离了用于异常压缩场景的实际工程需求.
结论:
- 建议在轴向压缩下对GB 50.017进行修订的稳定性因子,用于相同腿角.
- 提出了一种使用N-M相互作用方程的新设计方法,用于在等脚角下单面连接异常压缩.
- 实验验证支持拟议的稳定性因素和新的设计方法,为结构设计提供了更高的准确性.
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