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| 拟合核电厂设计反应谱及峰值位移的地震动调整方法 | |
| 引用本文： | 盛涛,施卫星,谢异同,袁俊. 拟合核电厂设计反应谱及峰值位移的地震动调整方法[J]. 核动力工程, 2012, 33(1): 4-8 |
| 作者姓名： | 盛涛 施卫星 谢异同 袁俊 |
| 作者单位： | 1. 同济大学结构工程与防灾研究所,上海,200092 2. 西安建筑科技大学土木工程学院,西安,710055 3. 西北电力设计院,西安,710075 |
| 基金项目： | 国家973重点基础研究发展计划，国家自然科学基金面上工程，国家十一五科技支撑计划 |
| 摘 要： | 提出一种以核电厂设计用伪速度反应谱及峰值位移为拟合目标的地震动调整方法。该方法基于样条小波的快速分解与回复算法,将实际地震加速度记录应用2阶基数B-样条小波进行分解,以识别对峰值位移、峰值加速度影响最大的小波分量;并在此基础上,通过改进地震动调整的小波分析法与时域叠加小波函数法,实现对目标反应谱及峰值位移、峰值加速度的同时拟合。算例分析结果表明,该方法具有较高的拟合精度。 |
| 关 键 词： | 核电厂 伪速度反应谱 峰值位移 小波 调整 |
A Modifying Method of Recorded Earthquake Ground Motion for Matching Design Response Spectrum and Peak Ground Displacement in Nuclear Power Plants |
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| SHENG Tao , SHI Wei-xing , XIE Yi-tong , YUAN Jun. A Modifying Method of Recorded Earthquake Ground Motion for Matching Design Response Spectrum and Peak Ground Displacement in Nuclear Power Plants[J]. Nuclear Power Engineering, 2012, 33(1): 4-8 | |
| Authors: | SHENG Tao SHI Wei-xing XIE Yi-tong YUAN Jun |
| Affiliation: | 1.Research Institute of Structural Engineering and Disaster Reduction,Tongji University,Shanghai,200092,China;2.School of Civil Engineering,Xi’an University of Architecture & Technology,Xi’an,710055,China;3.Northwest Electric Power Design Institute,Xi’an,710075,Chin |
| Abstract: | A modification method of recorded earthquake ground motion was proposed for matching the design pseudo velocity response spectrum and target peak ground displacement in nuclear power plants.The method applies the second cardinal B-spline wavelet to decompose the recorded real records into the finite wavelet components.Then the wavelet components which mostly affect the peak ground displacement and peak ground acceleration can be searched out.By improving the wavelet-based modifying method and wave-let synthesis method,the earthquake ground motions have been modified to match the target response spec-trum and target peak values of displacement and acceleration.The results of the numerical examples demon-strate that the proposed algorithms boast high precision. |
| Keywords: | Nuclear power plants Pseudo velocity response spectrum Peak ground displacement Wavelet Modification |
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