地震动的小波分析技术在高层结构抗震设计中的应用研究  

Application of Wavelet Analysis in Seismic Design of a High-rise Structure

作　　者：张长浩[1,2] 封建湖[1] 王勋涛[1] 王虎[1] 

机构地区：[1]长安大学理学院,陕西西安710064 [2]济南市规划设计研究院建筑分院,山东济南250101

出　　处：《地震工程学报》2016年第5期728-737,744,共11页China Earthquake Engineering Journal

基　　金：陕西省自然科学基金项目(2013JM7002)

摘　　要：利用具有良好时频局部化性质的小波基函数时频分析真实地震动,提出一种可行的基于小波分析法调整地震动的方法。实际地震波(El Centro波和TH2TG055波)经过调幅、小波变换和标准反应谱拟合得到调整后的地震波,将其输入到拟建结构模型中进行地震反应分析,对比层间剪力、层间位移及层间位移角等几方面的计算结果,表明选取小波分析后的地震波作为结构时程分析输入能够得到比较准确的数值,满足结构抗震设计的需要,在工程应用方面具有一定的应用参考价值。Earthquake engineering is a strong focus of civil engineering research,but the primary problem in this respect is the input of seismic motion.In this paper,the time-frequency localization nature of the wavelet function is used to analyze real ground motion,and a feasible method based on wavelet analysis is proposed.The actual seismic wave of El-Centro and TH2TG055 are adjusted by amplitude adjustment,wavelet transform,and standard response spectra fitting,and are then input into a structural model to analyze the seismic response.During seismic response analysis,this paper also analyzes results of story shear force,inter layer displacement,and story drift angle.Results show an improvement in the transformed seismic waves that meet the needs of earthquake resistant engineering and are useful in engineering applications.

关 键 词：地震加速度 小波分析 重构 高层钢筋混凝土框架-核心筒结构 地震动输入 时程分析 

分 类 号：P315.9[天文地球—地震学] TU973[天文地球—固体地球物理学]