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工程力学  2014 

多维多点输入下大跨度连体高层结构地震反应振动台阵试验研究

DOI: doi:10.6052/j.issn.1000-4750.2013.03.0134, PP. 212-217

Keywords: 大跨度结构,连体高层结构,多维多点激励,振动台试验,行波效应

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Abstract:

利用振动台阵在多维多点激励下对大跨度连体高层结构的地震响应进行了试验研究.试验中分别对结构输入了单维及多维、一致及不同视波速的行波激励以考察多维地震分量以及行波效应对结构地震响应的影响程度.试验结果表明:多维地震分量将增大结构地震响应;行波效应可能使连接部位关键杆件的应力有明显增大;同时考虑多维多点时结构沿强轴向加速度响应有所减小,而沿弱轴向加速度响应明显增大;连廊结构在考虑多维多点地震输入时其竖向地震响应将有明显放大.因此在对此类结构进行抗震设计时应考虑多维多点地震激励的影响.

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