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首页> 外文期刊>Soil Dynamics and Earthquake Engineering >Simultaneous identification of time and space variant dynamic soil properties during the 1995 Hyogoken-Nanbu earthquake
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Simultaneous identification of time and space variant dynamic soil properties during the 1995 Hyogoken-Nanbu earthquake

机译：同时识别1995年兵库县-南部南部地震时空动态土壤特性

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摘要

Time and space variant soil properties at a liquefied site were simultaneously identified in the time domain by using borehole array strong motion records. During soil liquefaction at a site, soils usually show a wide variety of non-linear behavior along the depth as well as non-stationary behavior. Strong ground motion records were obtained at Port Island borehole array observatory, Kobe, during the 1995 Hyogoken-Nanbu earthquake. In this study, the instrumented soil was modeled by the equivalent linear MDOF system, and an extended Kalman filter with local iteration was employed for the identification of the soils. The identification process was successfully conducted, and the stress-strain relationships of the soils at the liquefied site were obtained from different depths all at once.
机译：通过使用井眼阵列强运动记录，可以在时域中同时识别液化场地的时空变化土壤特性。在现场土壤液化期间，土壤通常沿深度表现出多种非线性行为以及非平稳行为。在1995年的兵库县-南埠地震中，神户的Port Island井眼阵列观测台获得了强大的地震动记录。在这项研究中，通过等效线性MDOF系统对仪器化土壤进行建模，并采用带有局部迭代的扩展卡尔曼滤波器来识别土壤。成功进行了识别过程，并从不同深度一次获得了液化部位土壤的应力-应变关系。

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