熊龙, 廖海黎, 李明水, et al. Wind Tunnel Test Study on Flutter Stability of Maputo Bridge[J]. 2017, 37(2): 321-326. DOI: 10.13409/j.cnki.jdpme.2017.02.021.
Wind Tunnel Test Study on Flutter Stability of Maputo Bridge
摘要
以莫桑比克马普托桥为工程背景
根据现场气象统计资料
采用Gumbel极值Ⅰ型分布曲线拟合的方法确定基本风速
并利用节段模型及全桥气弹模型
对其颤振稳定性进行详细研究。基于主梁节段模型和全桥气弹模型试验获得的颤振临界风速存在明显的差异
对其原因做了较为全面的分析。由于全桥气弹模型能够更好的模拟实桥的动力特性
能够反映实际三维空间效应、多模态耦合效应以及气动力相关性效应等
因此全桥气弹模型试验结果较准确
相比之下
节段模型试验结果偏于保守。
Abstract
The flutter stability of the Maputo Bridge of Mozambique is investigated in this study.A comparison of the aeroelastic response of section model and full bridge aeroelastic model is presented.Type-1 Gumbel distribution is utilized in the fitting of field meteorological statistics to estimate the basic wind speed of bridge.Comprehensive analysis is made to account for the apparent difference in the flutter critical wind speed between section model test and full bridge aeroelastic model test.It is noted that the full bridge aeroelastic model test
succeeded in the proper simulation of real bridge dynamics
three-dimensional and multi-modal coupling effect
can take the spanwise correlation of aerodynamic force into account and give a more accurate result.In comparison
section model test will lead to a conservative result.
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