Incorporating the Gradual Increase of Velocity with Depth into Modeling 3D Velocity Structures of the Kanto Basin
Recently site response by using the data observed at very dense array was obtained in the Tokyo Metropolitan area. Site responses of S-wave portion in the period range for 1-2 sec show drastic changes even in a closed distance. Because strong ground motions in the period range of several seconds are main cause of damages to various buildings, such spatial variation of site responses should be considered for the seismic design of buildings. In this study, we developed the method to reflect the site response for 2-4 sec obtained by the spectral inversion analysis on the 1D velocity structure. Resultant 1D structures by using this method allow us to develop 3D velocity structures for predicting strong ground motions in period range of several seconds.
Ground Motion Prediction Kanto basin Modeling of Velocity Structure Period Range of Several Seconds
Takashi. HAYAKAWA Bunho. KOJIKA
Research Engineer, SHIMIZU Corporation, Tokyo, Japan Researcher, Ohsaki Research Institute, Inc, Tokyo, Japan
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）