大跨度橋梁耦合斗振分析的有限元正交組合方法.pdf

大跨度橋梁耦合斗振分析的有限元正交組合方法

基于結(jié)構(gòu)的固有模志坐標(biāo)，提出了用于大跨度橋梁耦合抖振響應(yīng)分析的有限元正交組臺(comp[ele
quadratic combination，CQc)方法在合理假設(shè)基礎(chǔ)上，推導(dǎo)出橋梁結(jié)構(gòu)的節(jié)點等救氣動抖振力公式結(jié)合有限元
方法和隨機振動理論，給出了橋粱結(jié)掏節(jié)點位移和單元內(nèi)力功率譜密度和方差響應(yīng)的計算方法潑方法可 考
慮自然風(fēng)的任意風(fēng)譜和空間相關(guān)性以及橋梁結(jié)構(gòu)抖振響應(yīng)的多模態(tài)耦臺救應(yīng)，且計算數(shù)率較高

Notes on the structure of the natural mode coordinates for the proposed long-span bridge buffeting response analysis of coupled finite element orthogonal group of units (comp [ele
 quadratic combination, CQc) method based on reasonable assumptions, the node bridge structure derived aerodynamic buffeting forces such as the formula to save the finite element
 Methods and random vibration theory, a bridge beam end nodal displacement and element internal forces dig power spectral density and variance of the response of throwing the calculation method can test
 Taking into account any wind natural wind spectrum and spatial correlation, and buffeting response of bridge structures multimodal station Jiuying coupling, and the calculations of the higher