本文選題：風場模擬 + 大跨度橋梁��； 參考：《振動與沖擊》2017年07期

【摘要】：為減少諧波合成法中功率譜矩陣分解的計算量,基于雙索引頻率和譜矩陣特點,提出了譜解矩陣雙軸插值算法和遞歸插值算法。兩種方法均使風場模擬計算效率大幅度提高,且得到的模擬風場均與傳統(tǒng)諧波合成法在統(tǒng)計意義上相符;研究了插值節(jié)點數(shù)量及分布形式對風場模擬的影響,認為在譜解矩陣的頻率軸向采取前密后疏分段插值,雙索引頻率軸向采用均勻分布插值節(jié)點的形式,更適合于風場模擬。通過對一實際大跨度橋梁風場的模擬,驗證了方法的有效性。
[Abstract]:In order to reduce the computational complexity of power spectral matrix decomposition in harmonic synthesis, biaxial interpolation algorithm and recursive interpolation algorithm for spectral solution matrix are proposed based on the characteristics of double index frequency and spectral matrix. Both methods greatly improve the efficiency of wind field simulation, and the simulated wind field is statistically consistent with the traditional harmonic synthesis method, and the influence of the number and distribution of interpolated nodes on wind field simulation is studied. It is considered that the frequency axial interpolation of spectral solution matrix is more suitable for wind field simulation, and the double index frequency axial direction adopts the form of uniform distribution interpolation node, which is more suitable for wind field simulation. The effectiveness of the method is verified by simulating the wind field of a large span bridge.
【作者單位】： 湖南大學土木工程學院;湖南大學風工程與橋梁工程湖南省重點實驗室;
【基金】：國家重點基礎(chǔ)研究發(fā)展計劃(2015CB057701;2015CB057702) 國家自然科學基金(51278191) 湖南省高校創(chuàng)新平臺開放基金(13K016)
【分類號】：U441.3

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1 郝麗;基于移動設(shè)備的路況估計算法研究[D];北京郵電大學;2014年

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本文編號：2116993