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首页> 外文期刊>International journal of steel structures >Application of Indicial Function for the Flutter Analysis of Long Span Suspension Bridge During Erection
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Application of Indicial Function for the Flutter Analysis of Long Span Suspension Bridge During Erection

机译:指标函数在大跨度悬索桥安装过程颤振分析中的应用

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摘要

The design of cable supported bridge with long span is challenging due to the sensitivity of the dynamic excitation. The aerodynamic instability caused by fluttering can severely affect the safe operation. An application of indicial function to the flutter analysis in time domain is applied to the Great belt East Bridge for both completed and erection stage. The nonlinear least square method was used to extract the aerodynamic indicial parameters for flutter analysis in time domain. The geometric nonlinearity is considered through the nonlinear dynamic analysis. The results showed the good agreement with the wind tunnel test and the validity of the indicial function as well as the important role of the geometrically nonlinear analysis during deck erection.
机译:由于动态激励的敏感性,大跨距的斜拉桥的设计具有挑战性。扑动引起的空气动力学不稳定性会严重影响安全操作。在完成时和安装阶段,将独立函数在时域颤动分析中的应用应用于大带东桥。非线性最小二乘方法用于提取时空颤振分析的空气动力学指标。通过非线性动力学分析来考虑几何非线性。结果表明与风洞试验具有很好的一致性,独立函数的有效性以及几何非线性分析在甲板安装过程中的重要作用。

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