Chapter
Apr 26, 2012
Model Test Study on Dynamic Responses of Loess Slope by Dynamic Compaction
Authors: Zhong Zhou [email protected], Bao-chen Liu, and Xiao-li YangAuthor Affiliations
Publication: Soil Dynamics and Earthquake Engineering
Abstract
This article has accomplished the model test for 1:20 loess slope, investigated the law of similitude, boundary condition treatment and so on in the model test, studied the change rules of dynamic properties and dynamic response rules for loess slope in dynamic compaction. Results show that the amplitude of dynamic response for loess slope in dynamic compaction fades out rapidly with the impact loading effect; the vibration cycle is less than 1s and the major frequency is between 25~45 Hz that no superimposed vibration will occur. The amplification effect on radial acceleration is more obvious for loess slope in dynamic compaction, the vertical vibration prevails at lower part of slope while radial vibration prevails at upper part of slope. There is amplification effect for response amplitude on impact vibration of on the ridge of loess slope. There is obvious amplification effect on slope for input acceleration along the slope, especially the most obvious amplification effect at the top of slope. The test results have favorable influence on revealing the rules of dynamic response for loess slope in dynamic compaction, and provide instructive reference for the engineering design and construction for the loess region.
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© 2010 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Civil Architechural Engineering College, Central South University, Changsha Hunan 410075, China. E-mail: [email protected]
Bao-chen Liu
Civil Architechural Engineering College, Central South University, Changsha Hunan 410075, China
Xiao-li Yang
Civil Architechural Engineering College, Central South University, Changsha Hunan 410075, China
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