INFLUENCE OF ASPERITY PARAMETERS ON THE FOURIER SPECTRUM

摘要：

Brunes model is used for predicting the Fourier spectrum of single asperity. In order to discover the influence of the asperity parameters on the ground motion, the asperity is simulated in the different conditions, which include the area and the stress drop of the asperity. The simulation result shows that the stress drop and the asperity area play important role in the far field Fourier spectrum. However, the research results also show that these source parameters have different influences on the Fourier spectrum at different frequencies. The asperity area has great influences on spectrum in low frequency range than in high frequency range. And, when the asperity area is invariant the Fourier amplitude spectra increased obviously with the increase of stress drop on the single asperity. And the shapes of spectrum in different stress drops are approximately the same in all frequencies.

关键词： stress drop on the asperity asperity area the Fourier spectrum source parameter

作者: Di Wu Yan Xiong Ping Tan

作者单位: Key Laboratory of Earthquake Engineering and Applied Technique of Guangdong Province, Guangzhou Univ State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzho Key Laboratory of Earthquake Engineering and Applied Technique of Guangdong Province, Guangzhou Univ

会议类型: 国际会议

会议名称: 2009年土木工程结构创新与可持续发展国际会议(The International Symposium on Innovation & Sustainability of Structures in Civil Engineering)

会议地点: 广州

会议语种:英文

页码: 1506-1511

在线出版日期: 2009-11-28（万方平台首次上网日期，不代表论文的发表时间）