Relative Seismic Risk Evaluation of Various Buildings Based on an Input Wave Field
Publication: International Journal of Geomechanics
Volume 17, Issue 9
Abstract
Seismic responses of various buildings are calculated by a three-dimensional (3D) linear method for examining the soil-building interaction based on an input seismic wave field in the reclaimed zone of Tokyo Bay in which ground motions include a considerable amount of surface waves. A seismic wave field means seismic waves propagate in a 3D medium. The method was recently proposed to adequately treat surface waves trapped by a deep (several kilometers) underground structure in a soil-building interaction system. First, seismic responses of a building were calculated at two soft-soil sites for three large earthquakes to understand the variations in building responses with reference to sites and earthquakes. Second, seismic responses of low- to high-rise reinforced concrete (RC) and steel buildings and wood buildings were compared at a soft-soil site for a large earthquake, evaluating the relative seismic risk of various buildings. Midrise RC and steel buildings shook more severely than low-rise and high-rise RC and steel buildings. Flexible wood buildings suffered extremely large interstory drifts, indicating the largest seismic risk.
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Acknowledgments
Most of the accelerograms were provided as a data set of Strong Motion Array Observation No. 2 by the Association for Earthquake Disaster Prevention of Japan (1995). Parts of the accelerograms recorded at the Echujima station were supplied by the Shimizu Corporation of Japan. Dr. Tetsuya Ishihara of the Technical Research and Development Institute, JDC Corporation of Japan, gave helpful advice on the soil-building interaction system. Dr. Masaomi Teshigawara of Nagoya University of Japan gave instructive advice on steel buildings. Two anonymous reviewers greatly improved the manuscript.
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Published In
International Journal of Geomechanics
Volume 17 • Issue 9 • September 2017
Copyright
© 2017 American Society of Civil Engineers.
History
Received: Jul 5, 2016
Accepted: Mar 20, 2017
Published online: Jun 7, 2017
Published in print: Sep 1, 2017
Discussion open until: Nov 7, 2017
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