胡晓虎,陈苏,金立国,傅磊,王苏阳,刘献伟. 2023. 场地地震效应模拟时序卷积网络模型. 地震学报,45(0):1−12. DOI: 10.11939/jass.20220226
引用本文: 胡晓虎,陈苏,金立国,傅磊,王苏阳,刘献伟. 2023. 场地地震效应模拟时序卷积网络模型. 地震学报,45(0):1−12. DOI: 10.11939/jass.20220226
Hu X H,Chen S,Jin L G,Fu L,Wang S Y,Liu X W. 2023. Temporal convolution neural network model for simulation of site seismic effect. Acta Seismologica Sinica45(0):1−12. DOI: 10.11939/jass.20220226
Citation: Hu X H,Chen S,Jin L G,Fu L,Wang S Y,Liu X W. 2023. Temporal convolution neural network model for simulation of site seismic effect. Acta Seismologica Sinica45(0):1−12. DOI: 10.11939/jass.20220226

场地地震效应模拟时序卷积网络模型

Temporal convolution neural network model for simulation of site seismic effect

  • 摘要: 场地地震效应模拟作为岩土地震工程学的热点与难点,多基于数学物理方法或观测记录开展研究,需面对动力方程求解、建模不确定性、数据稀疏、泛化能力等问题。本研究构建了物理嵌入的时序卷积网络(Phy-TCN)模型,并验证了与纯数据驱动的时序卷积网络(TCN)的性能差异。针对KiK-net数据库中场地井上/井下强震记录,采用Phy-TCN模型开展了场地地震效应模拟。结果表明:Phy-TCN 模型可有效模拟时序型数据;在KiK-net观测记录等含噪信号模拟中,以选取站点的地震事件特定周期点反应谱值为基准,Phy-TCN和等效线性化方法与实测记录平均相对误差分别为0.067和0.379,Phy-TCN模型可应用于土层剖面信息模糊条件的场地地震效应模拟。

     

    Abstract: As a hotspot and difficulty in geotechnical earthquake engineering, site seismic effect simulation is mainly studied by mathematical and physical methods or based on observational records, facing challenges such as solving dynamic equations, modeling uncertainty, data sparsity and generalization ability. In this study, a physics-embedded temporal convolution neural network (Phy-TCN) model is considered to verify the performance difference compared with the data-driven temporal convolution neural network (TCN). The Phy-TCN model is used to simulate site seismic effect according to the on-site/borehole strong motion records in KiK-net database. The results show that the Phy-TCN model can effectively simulate time series data. In the simulation of signals containing noise from KiK-net observation records, the average relative errors of the Phy-TCN and equivalent linearization method are 0.067 and 0.379, respectively, based on the response spectra values at specific periodic points of earthquake events at selected sites. In conclusion, Phy-TCN model can be applied to the simulation of site seismic effect under the condition of fuzzy soil profile.

     

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