摘要
针对高层建筑抗震、抗风、健康监测及损伤诊断等研究中结构模态参数辨识问题,利用随机减量技术从环境激励下的高层建筑振动响应数据中提取自由衰减信号,根据自由衰减信号小波变换结果可以有效地辨识高层建筑固有频率和粘性阻尼系数。通过仿真结果与理论值比较,证实了该方法的有效性和精确性。该方法成功地运用于大连市某高层楼房的固有频率和粘性阻尼系数的辨识,为该高层楼房健康监测提供了重要的参考依据。
Modal parameters identification for seismic-resistant problemwind-resistant problemstructural health monitoring and structural damage detection is investigated. For identifying natural frequencies and damping coefficients of high-rise structuresthe method using continuous wavelet transform combined with random decrement technique is proven to be effective. Through comparing simulation results with theoretical results the adaptability and validity of the method are here verified. The natural frequencies and damping coefficients which are important references for structural health monitoring of a high building in Dalian are successfully estimated by this method.
引文
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