Post-liquefaction Cyclic Shear Strain: Phenomenon and Mechanism
Under undrained cyclic loading, sand experiences decrease in effective stress, which can result in liquefaction. Test results show that large cyclic shear strain is generated at zero effective stress during undrained cyclic loading. This post-liquefaction shear strain has been observed to progressively increase in amplitude with increasing number of loading cycles until it eventually stabilizes at a bounded value. However, there has been no clear explanation on why and how this cyclic shear strain is generated. The fabric mechanism behind this post-liquefaction shear strain phenomenon is briefly discussed in this study.
38.1 The Basic Phenomenon
38.2 Fabric Mechanism
Support from the European Research Council under FP7-ERC-IDEAS Advanced Grant Agreement n 290963 (SOMEF) is acknowledged.
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