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Cursory seismic drift assessment for buildings in moderate seismicity regions

Zhu Yong (朱 勇)1, R.K.L. Su2 and Zhou Fulin (周福霖)1

  1. Earthquake Engineering Research Test Centre and Key Lab of Earthquake Engineering and Application Technology of
    Guangdong Province, Guangzhou University

  2. Department of Civil Engineering, The University of Hong Kong

Abstract: This paper outlines a methodology to assess the seismic drift of reinforced concrete buildings with limited structural and geotechnical information. Based on the latest and the most advanced research on predicting potential near-field and far field earthquakes affecting Hong Kong, the engineering response spectra for both rock and soil sites are derived. A new step-by-step procedure for displacement-based seismic hazard assessment of building structures is proposed to determine the maximum inter-storey drift demand for reinforced concrete buildings. The primary information required for this assessment is only the depth of the soft soil above bedrock and the height of the building. This procedure is further extended to assess the maximum chord rotation angle demand for the coupling beam of coupled shear wall or frame wall structures, which may be very critical when subjected to earthquake forces. An example is provided to illustrate calibration of the assessment procedure by using actual engineering structural models.

Keywords: seismic hazard assessment; response spectrum; soil site; rock site; displacement-based; inter-storey drift; coupling beams; chord rotation angle

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Copyright 2009 IEM. Journal of Earthquake Engineering and Engineering Vibration. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as described below, without written permission from the Publisher. Copying of articles is not permitted except for personal and internal use, to the extent permitted by national copyright law, or under the terms of a license issued by the National Reproduction Rights Organization of China.