摘要
利用空间地震动相关性描述度量如相关、相干函数分析地震动在局部尺度内的相关性随空间距离、频率的变化规律。在此基础上,基于随机场基本理论对Harichandran-Vanmarcke模型进行了修正,在原一维模型基础上考虑了空间的二维因素,并通过Smart-1台阵event-40记录给出了模型参数的具体取值。
The analysis of muli-point ground motion characteristics with space distance and frequency was performed. Based on the second-order theory of random fields, a new mathematical model was proposed, as an enhancement on the model of Harichandran-Vanmarcke, taking a 2-D spatial factor into account . The accelerograms recorded by SMART 1 seismograph array in Lotung Taiwan were used to determine the parameters of the correlation model. Finally, a comparison was made between the new model and Hao model, it was shown that the proposed model has an excellent performance.
出处
《振动与冲击》
EI
CSCD
北大核心
2013年第2期164-170,共7页
Journal of Vibration and Shock
基金
国家自然科学基金项目(90815011)
教育部新世纪人才计划(06-0765)
关键词
多点地震动
台阵记录
相干模型
参数分析
特性分析
spatially varying ground motion
seismograph array
correlation model
parameter ansysis
character ansysis
