李玉学, 杨庆山, 田玉基. 大跨屋盖结构共振响应多目标等效静力风荷载[J]. 工程力学, 2013, 30(11): 75-80,86. DOI: 10.6052/j.issn.1000-4750.2012.07.0533
引用本文: 李玉学, 杨庆山, 田玉基. 大跨屋盖结构共振响应多目标等效静力风荷载[J]. 工程力学, 2013, 30(11): 75-80,86. DOI: 10.6052/j.issn.1000-4750.2012.07.0533
LI Yu-xue, YANG Qing-shan, TIAN Yu-ji. MULIple targets Equivalent static wind loadS OF RESONANT RESPONSE FOR large-span roofs[J]. Engineering Mechanics, 2013, 30(11): 75-80,86. DOI: 10.6052/j.issn.1000-4750.2012.07.0533
Citation: LI Yu-xue, YANG Qing-shan, TIAN Yu-ji. MULIple targets Equivalent static wind loadS OF RESONANT RESPONSE FOR large-span roofs[J]. Engineering Mechanics, 2013, 30(11): 75-80,86. DOI: 10.6052/j.issn.1000-4750.2012.07.0533

大跨屋盖结构共振响应多目标等效静力风荷载

MULIple targets Equivalent static wind loadS OF RESONANT RESPONSE FOR large-span roofs

  • 摘要: 针对大跨屋盖结构等效静力风荷载计算需要兼顾多个响应控制目标问题,基于能量等效,提出了大跨屋盖结构风致共振响应多目标等效静力风荷载分析方法。根据结构风致共振响应特点,从保证结构整体安全的角度,确定以结构风振过程中各节点吸收和转化的风动能达到极值时刻为等效目标,据此最不利情况,推导了共振响应多目标等效静力风荷载表达式。最后,将该方法应用于北京奥运网球中心屋盖结构共振响应等效静力风荷载计算,结果表明:该等效静力风荷载下的结构静力响应与频域分析得到的结构动力响应极值吻合较好,验证了所提方法的有效性和工程实用性。

     

    Abstract: Multiple response targets should be considered in the calculation of equivalent static wind loads for large-span roofs. A method is proposed to analyze the equivalent static wind loads for multiple targets based on the energy equivalent criterion. The procedure of this method is: according to the characteristics of wind-induced resonant response, in order to ensure structure safety, an equivalent target is determined when the total wind-induced energy absorbed by the nodes reach the peak value. On the basis of this, the formula of resonant response equivalent static wind loads for multiple targets is derived. Furthermore, the proposed method is applied to calculate the equivalent static wind loads on the roof structure of Beijing Olympic Tennis Center Stadium. The results demonstrate that the structural static response induced by the obtained equivalent static wind loads agrees well with the extreme response calculated by frequency domain analyzing method, which verifies the effectiveness and the practicability in engineering application of the proposed method.

     

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