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通过数值模拟研究,通过下降冲击翻转架起重机的情况
Jia-Chen Su1, Lei Li1,2,3, Pak Wai Chan4
1School of Atmospheric Sciences, Sun Yat-Sen University and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519082, China.
Heliyon
|August 10, 2023
概括
下降可能会导致门架起重机由于严重的风力干扰和翻转时刻的增加而翻转. 模拟显示了维克罗伊的情况.
科学领域:
- 工程 工程师 工程师 工程师
- 气象学 天气学
- 结构分析 结构分析
背景情况:
- 吊架起重机是必不可少的基础设施,易受暴风雨等极端天气事件的影响.
- 之前的研究还没有完全阐明流体结构相互作用机制,导致起重机在下降时翻转.
研究的目的:
- 为了研究一个门架起重机在下爆事件期间的流体结构相互作用 (FSI) 反应.
- 为了确定廊起重机翻转的主要原因,由深的下爆引发.
主要方法:
- 利用计算流体动力学 (CFD) 来模拟使用Vicroy模型的下降风场.
- 进行了流体结构相互作用 (FSI) 模拟,以分析门架起重机结构的动态反应.
- 通过比较下降风场模拟与二维下降风场数值模拟.
主要成果:
- 维克罗伊的下爆模型提供了合理的稳定状态风场,与2D模拟保持一致.
- 与正常风形状相比,前梁在下风条件下经历了更严重的干扰,增加了翻转的概率.
- 下造成了明显更大的下风位移,更大的压力差异,以及门架起重机上的不均的支反应.
- 翻转时刻和基础剪切力在下爆期间超过了关键稳定性值.
结论:
- 这项研究证实,下降爆炸显著增加了门架起重机翻转的风险.
- 下风特征与起重机的结构反应之间的相互作用对于理解翻转至关重要.
- 这些发现为设计在强风地区更有弹性的门架起重机结构提供了宝贵的见解.
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