基于场地和地震环境的地面运动傅氏振幅谱统计研究  

Statistical study on fourier amplitude spectrum of ground motion based on site and seismic environment

作　　者：冯梦琦 田杰[1] 王志涛[2] 李吉超[3] Feng Meng-qi;Tian Jie;Wang Zhi-tao;Li Ji-chao(College of Architectural and Civil Engineering,Beijing University ofTechnology,Beijing 100124,China;Institute of Earthquake Engineering,Beijing University of Technology,Beijing 100124,China;Institute of Engineering Mechanics,CEA,Harbin 150080,China)

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]北京工业大学抗震减灾研究所,北京100124 [3]中国地震局工程力学研究所,黑龙江哈尔滨150080

出　　处：《工程抗震与加固改造》2019年第2期149-156,148,共9页Earthquake Resistant Engineering and Retrofitting

摘　　要：在当前已有研究的基础上,提出一种傅氏振幅谱分段衰减模型。根据5060条实际地震动记录,统计了傅氏振幅谱与震级、震中距、场地类别之间的衰减规律。最后,将实际地震动记录的傅氏振幅谱与由衰减公式计算得到的傅氏振幅谱进行对比分析,验证了本文所提方法的可靠性。Based on previous studies,this paper proposes a segmentation attenuation model of Fourier amplitude spectrum.According to the 5060 actual ground motion records,the attenuation law between the Fourier amplitude spectrum and the magnitude,epicentral distance and site category is calculated.Finally,the Fourier amplitude spectrum of the actual ground motion record is compared with the Fourier amplitude spectrum calculated by the attenuation formula to verify the reliability of the proposed method.

关 键 词：傅氏振幅谱 地震参数 分段模型 衰减规律 

分 类 号：P315.31[天文地球—地震学]