【摘要】 利用空间地震动相关性描述度量如相关、相干函数分析地震动在局部尺度内的相关性随空间距离、频率的变化规律。在此基础上,基于随机场基本理论对Harichandran-Vanmarcke模型进行了修正,在原一维模型基础上考虑了空间的二维因素,并通过Smart-1台阵event-40记录给出了模型参数的具体取值。更多还原

【Abstract】 The analysis of muli-point ground motion characteristics with space distance and frequency was performed.Based on the second-order theory of random fields,a new mathematical model was proposed,as an enhancement on the model of Harichandran-Vanmarcke,taking a 2-D spatial factor into account.The accelerograms recorded by SMART 1 seismograph array in Lotung Taiwan were used to determine the parameters of the correlation model.Finally,a comparison was made between the new model and Hao model,it was shown that the proposed model has an excellent performance.更多还原