Dynamic Deformation Behavior and Cyclic Degradation of Ultrasoft Soil under Cyclic Loading
Publication: Journal of Materials in Civil Engineering
Volume 28, Issue 11
Abstract
The dynamic deformation behavior of ultrasoft soil foundations is one of the major concerns in the field of geotechnical engineering. In this study, a series of cyclic triaxial tests with different vibration frequencies, , and cyclic stress ratios, CSRs, has been conducted to investigate the dynamic deformation and cyclic degradation of ultrasoft soil from Binhai, China. The results reveal that the vibration frequencies have a substantial influence on the dynamic deformation of the ultrasoft soil. The inflection frequency is 3 Hz. The value of the strain at failure of ultrasoft soil is between 0.99 and 1.6%, lower than that of general soft soils. The effect of on the degradation index, , of ultrasoft soil is different from that of general clay soils. In addition, CSRs have a significant influence on the axial strain development mode. Compared with general soft soil, the effect of CSRs on the degradation index of ultrasoft soil is discussed.
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Acknowledgments
The authors would like to acknowledge the National Natural Science Foundation of China (NSFC) (NO. 51378344), the Tianjin Research Program of Application Foundation and Advanced Technology (14JCYBJC21700), and the Ministry of Education (KLE-TJGE-B1101) for their financial support.
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Published In
Journal of Materials in Civil Engineering
Volume 28 • Issue 11 • November 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jul 30, 2015
Accepted: Mar 4, 2016
Published online: Jun 10, 2016
Published in print: Nov 1, 2016
Discussion open until: Nov 10, 2016
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