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Study on liquefaction of saturated loess by in-situ explosion test

Wang Lanmin (王兰民), He Kaiming (何开明), Shi Yucheng (石玉成) and Wang Jun (王峻)

  1. Lanzhou Institute of Seismology, China Seismological Bureau, Lanzhou 730000, China
  2. Department of Underground Engineering, Tongji University, Shanghai 200000,China 

Abstract: Liquefaction testing at a saturated loess site was performed under the simulated earthquake ground motion induced by artificial explosions with micro-time intervals. The time histories of ground acceleration, pore water pressure and the ultimate value of residual strain were recorded and measured. The modified FEQdrain computation software was used to analyze the liquefaction. Both the test and the analysis confirm the objective occurrence of loess liquefaction. Furthermore, the reliability of the method of the loess liquefaction analysis based on FEQdrain and the model of pore water pressure development of saturated loess are examined.

Key words: loess; liquefaction; pore pressure; explosion test

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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.