ABSTRACT Since defining ground motions is crucial for reliable analysis of structural responses, it is vital to select coherency model when conducting seismic analyses of extended structures under nonuniform excitation. In the present paper, a series of shaking table tests are conducted to study the effect of coherency models on seismic performances of a utility tunnel. The test results show that there are significant differences in seismic performances of the utility tunnel for using different coherency models. Structural strain and acceleration responses are relative to the decaying of coherency models at low frequency and high frequency, respectively.

中文翻译：

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通过振动台试验研究不同相干模型对公用事业隧道的影响

摘要 由于定义地面运动对于结构响应的可靠分析至关重要，因此在非均匀激励下对扩展结构进行地震分析时选择相干模型至关重要。在本文中，进行了一系列振动台试验来研究相干模型对综合管廊抗震性能的影响。试验结果表明，使用不同相干模型的综合管廊抗震性能存在显着差异。结构应变和加速度响应分别与低频和高频相干模型的衰减有关。