【摘要】：以隨機(jī)振動理論為基礎(chǔ),推導(dǎo)了大跨屋蓋結(jié)構(gòu)風(fēng)致背景響應(yīng)及其模態(tài)耦合項(xiàng)、共振響應(yīng)及其模態(tài)耦合項(xiàng)以及背景響應(yīng)和共振響應(yīng)耦合項(xiàng)的計算公式,提出了考慮耦合效應(yīng)的脈動風(fēng)總響應(yīng)組合方法;在此基礎(chǔ)上,引入耦合效應(yīng)修正系數(shù),并根據(jù)結(jié)構(gòu)動力特性與風(fēng)荷載特性對提出的脈動風(fēng)總響應(yīng)組合公式進(jìn)行了簡化分析,得到了相應(yīng)的實(shí)用組合公式,據(jù)此可以實(shí)現(xiàn)大跨屋蓋結(jié)構(gòu)考慮耦合效應(yīng)的風(fēng)致背景響應(yīng)和共振響應(yīng)實(shí)用高效組合。最后,通過國家體育場屋蓋主結(jié)構(gòu)風(fēng)致背景響應(yīng)和共振響應(yīng)組合計算對所提方法的有效性進(jìn)行了驗(yàn)證。
[Abstract]:Based on the random vibration theory, the formulas for calculating the wind-induced background response and their modal coupling terms, the resonance response and the modal coupling term, and the coupling terms of the background response and the resonance response of the long-span roof structure are derived. In this paper, a combined method for the total response of pulsating wind considering coupling effect is proposed, and the coupling effect correction coefficient is introduced, and the formula of the total response of pulsating wind is simplified and analyzed according to the dynamic characteristics of the structure and the characteristics of the wind load. The corresponding practical combination formula is obtained, and the practical and efficient combination of wind-induced background response and resonance response of long-span roof structure considering coupling effect can be realized. Finally, the effectiveness of the proposed method is verified by the combination calculation of wind-induced background response and resonance response of the main roof structure of the National Stadium.
【作者單位】： 石家莊鐵道大學(xué)土木工程學(xué)院;石家莊鐵道大學(xué)道路與鐵道工程安全保障省部共建教育部重點(diǎn)實(shí)驗(yàn)室;北京交通大學(xué)土木建筑工程學(xué)院結(jié)構(gòu)風(fēng)工程與城市風(fēng)環(huán)境北京市重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金(51278314) 河北省自然科學(xué)基金(E2012210002) 河北省高等學(xué)校科學(xué)技術(shù)研究優(yōu)秀青年基金(YQ2013028) 石家莊鐵道大學(xué)優(yōu)秀青年基金(Z9901503)
【分類號】：TU312.1;TU311.3

【參考文獻(xiàn)】

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