| 近断层脉冲型地震动时频非平稳特性的影响 |
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| 引用本文： | 杨晓瑞,陈辉国,雷屹欣. 近断层脉冲型地震动时频非平稳特性的影响[J]. 华北地震科学, 2019, 37(4): 7-12 |
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| 作者姓名： | 杨晓瑞 陈辉国 雷屹欣 |
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| 作者单位： | 陆军勤务学院军事设施系,重庆,401331;陆军勤务学院军事设施系,重庆,401331;陆军勤务学院军事设施系,重庆,401331 |
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| 基金项目： | 重庆市自然科学基金项目;重庆市教委科学技术研究计划重点项目 |
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| 摘 要： | 通过分频带子波划分方法对所选脉冲型地震动进行分解,在保留脉冲主特性不变的情况下,通过人为改造得到时频分布不同的系列脉冲型地震动,作用于不同周期SDOF体系得到最大位移响应,结果表明:脉冲型地震动对结构影响较大,除了受脉冲特性的影响外,其时频非平稳特性的影响作用同样值得关注。
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| 关 键 词： | 脉冲型地震动 时频非平稳 SDOF体系 影响 |
Influence of Time-frequency Non-stationary Characteristics of Near-fault Pulse Ground Motion |
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| YANG Xiaorui,CHEN Huiguo,LEI Yixin. Influence of Time-frequency Non-stationary Characteristics of Near-fault Pulse Ground Motion[J]. North China Earthquake Sciences, 2019, 37(4): 7-12 |
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| Authors: | YANG Xiaorui CHEN Huiguo LEI Yixin |
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| Affiliation: | (Dept. of Military Installations, Army Logistics University of PLA, Chongqing 401331, China) |
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| Abstract: | The selected pulse ground motion is decomposed by the sub-band wavelet division method. Under the condition that the main characteristics of the pulse are unchanged, a series of pulse ground motions with different time-frequency distributions are obtained by artificial transformation, which acts on different periods of SDOF, and obtain the maximum displacement of the system. The results show that the pulse ground motion has a great influence on the structure. Besides the influence of the pulse characteristics, the influence of the time-frequency non-stationary characteristics is also worthy of attention. |
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| Keywords: | pulsed ground motion time-frequency non-stationary SDOF system influence |
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