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。
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.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2012年第1期4-8,共5页
Nuclear Power Engineering
基金
国家973重点基础研究发展计划(2007CB714202)
国家自然科学基金项目面上工程(50478045)
国家十一五科技支撑计划(115-XL-04-052)
关键词
核电厂
伪速度反应谱
峰值位移
小波
调整
Nuclear power plants
Pseudo velocity response spectrum
Peak ground displacement
Wavelet
Modification
