大跨屋盖结构风致背景响应和共振响应实用组合方法

发布时间：2018-07-26 11:46

【摘要】：以随机振动理论为基础,推导了大跨屋盖结构风致背景响应及其模态耦合项、共振响应及其模态耦合项以及背景响应和共振响应耦合项的计算公式,提出了考虑耦合效应的脉动风总响应组合方法;在此基础上,引入耦合效应修正系数,并根据结构动力特性与风荷载特性对提出的脉动风总响应组合公式进行了简化分析,得到了相应的实用组合公式,据此可以实现大跨屋盖结构考虑耦合效应的风致背景响应和共振响应实用高效组合。最后,通过国家体育场屋盖主结构风致背景响应和共振响应组合计算对所提方法的有效性进行了验证。
[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.
【作者单位】：石家庄铁道大学土木工程学院;石家庄铁道大学道路与铁道工程安全保障省部共建教育部重点实验室;北京交通大学土木建筑工程学院结构风工程与城市风环境北京市重点实验室;
【基金】：国家自然科学基金(51278314) 河北省自然科学基金(E2012210002) 河北省高等学校科学技术研究优秀青年基金(YQ2013028) 石家庄铁道大学优秀青年基金(Z9901503)
【分类号】：TU312.1;TU311.3

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