IDENTIFICATION OF Q IN SUBSURFACE GROUND BY SWEEPING METHOD USING VERTIVAL ARRAY RECORDS OF EARTHQUAKE GROUND MOTIONS

摘要：

The objective of this study is to identify the damping property Q (quality factor) of subsurface ground by Sweeping Method, which was proposed by the authors, using the vertical array records of earthquake ground motions. National Research Institute for Earth Science and Disaster Prevention (NIED) deploys digital strong-motion seismographs (KiK-net) all over the country in Japan, which provide vertical array records of ground motions. The total number of observation sites is nearly 700. Data observed by KiK-net can be downloaded on the website, which can be used for the identification of such parameters of subsurface laminated layers as shear wave velocity and quality factor. In this study, using KiK-net data, the frequency-dependent characteristics of the quality factor is extracted.

关键词： quality factor identification subsurface ground earthquake ground motions sweeping method

作者: O. Tsujihara T. Sawada

作者单位: Associate Professor, Dept. of Civil Engineering, Wakayama National College of Technology, Wakayama, Professor, Dept. of Civil Engineering, Faculty of Engineering, The University of Tokushima, Tokushim

会议类型: 国际会议

会议名称: 14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）