| 动力分析实测强震加速度时域选取的优化算法 |
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| 引用本文： | 张雨霆,肖明,李玉婕. 动力分析实测强震加速度时域选取的优化算法[J]. 华中科技大学学报(自然科学版), 2011, 39(11): 100-104 |
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| 作者姓名： | 张雨霆 肖明 李玉婕 |
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| 作者单位： | 1. 武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072／长江科学院水利部岩土力学与工程重点实验室,湖北武汉430010
2. 武汉大学水资源与水电工程科学国家重点实验室,湖北武汉,430072 |
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| 基金项目： | 国家自然科学基金资助项目(90715042,50909007); 水利部公益性行业科研专项基金资助项目(201001009); “十一五”国家科技支撑计划资助项目(2008BAB29B01) |
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| 摘 要： | 为缩短强震台监测的加速度时程动力分析时间,提出了加速度时域选取的优化算法.首先,运用希尔伯特-黄变换求得实测加速度能量在时域内的表达形式;然后,根据能量时程曲线,以保留总能量95%为基准,对低能量时段进行过滤;最后,对非低能量时段进行拼接处理,得到优化加速度时程.将该优化算法运用于＂5.12＂汶川地震卧龙台所测强震加速...
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| 关 键 词： | 动力分析 强震加速度 时域 优化 希尔伯特-黄变换 |
Optimization algorithm for selecting time domain of strong motion acceleration measurement using dynamic analysis |
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| Zhang Yuting, Xiao Ming Li Yujie. Optimization algorithm for selecting time domain of strong motion acceleration measurement using dynamic analysis[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 2011, 39(11): 100-104 |
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| Authors: | Zhang Yuting Xiao Ming Li Yujie |
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| Affiliation: | Zhang Yuting1,2 Xiao Ming1 Li Yujie1(1 State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China,2 Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources,Yangtze River Scientific Research Institute,Wuhan 430010,China) |
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| Abstract: | To reduce the time spent on dynamic analysis,the optimization algorithm for time domain selection of measured acceleration was put forward.Firstly,the time domain expression of the energy of measured acceleration was figured out by employing Hilbert-Huang transform.Then based on the energy curve the low energy periods were filtered by reserving 95% of total energy.Finally,by splicing the non-low energy periods,the optimized time history of acceleration was obtained.The proposed algorithm was employed to opt... |
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| Keywords: | dynamic analysis strong motion acceleration time domain optimization Hilbert-Huang transform |
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