| 基于时变Kanai-Tajimi模型的爆炸地震动拟合 |
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| 引用本文： | 宋浩,陈辉国,钟庭,刘国粹,王苗硕.基于时变Kanai-Tajimi模型的爆炸地震动拟合[J].工程爆破,2017,23(4). |
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| 作者姓名： | 宋浩 陈辉国 钟庭 刘国粹 王苗硕 |
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| 作者单位： | 后勤工程学院军事土木工程系,重庆,401331 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 借鉴完全非平稳地震动的研究方法,将VLACHOS C提出的完全非平稳时变Kanai-Tajimi模型用于爆炸地震动的拟合。结合实际爆炸地震动对这两种模型进行分析验证,通过比较拟合爆炸地震动与实际爆炸地震动的加速度时间历程曲线、反应谱、强度包线、归一化累积能量以及累积穿零次数,从时域和频域两方面来分析拟合效果,通过研究表明,单峰时变Kanai-Tajimi模型更适合用于爆炸地震动的拟合。
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| 关 键 词： | 爆炸地震动 Kanai-Tajimi模型 时变功率谱 完全非平稳 拟合 |
The fitting of explosive ground motion based on time-varying Kanai-Tajimi model |
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| SONG Hao,CHEN Hui-guo,ZHONG Ting,LIU Guo-cui,WANG Miao-shuo.The fitting of explosive ground motion based on time-varying Kanai-Tajimi model[J].Engineering Blasting,2017,23(4). |
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| Authors: | SONG Hao CHEN Hui-guo ZHONG Ting LIU Guo-cui WANG Miao-shuo |
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| Abstract: | The method of completely non-stationary ground motion was used and the completely non-stationary time-varying Kanai-Tajimi model proposed by Vlachos was applied to the fitting of the explosive ground motion.The two models were analyzed and verified by combining the examples of explosive ground motion.The acceleration time history curve,response spectrum,intensity envelope,normalized cumulative energy and cumulative zero passages of the simulated explosive ground motion and explosive ground motion were compared.The fitting effect was analyzed from both the time domain and the frequency domain.The results showed that the unimodal time-varying Kanai-Tajimi model was more suitable for the fitting of explosive ground motion. |
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| Keywords: | explosive ground motion Kanai-Tajimi model evolutionary power spectra completely non-stationary fitting |
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