超固结度对超固结饱和黏土不排水蠕变特性的影响研究

Translated title of the contribution: Influences of overconsolidation ratio on undrained creep behavior of overconsolidated saturated clay

Jian Han, Yang Ping Yao, Zhen Yu Yin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)

Abstract

The results from creep tests on reconstituted clay are presented and used to develop a preliminary framework of undrained creep behavior of overconsolidated clay. Based on the results of undrained creep tests on the samples with different OCRs under the same stress ratio close to the slope of CSL, as the creep time increases, the pore pressure decreases to the end of creep, from a positive value to a negative one. The stress paths of the specimens with different OCRs all reach the critical state line. However, the highly overconsolidated specimens do not fail. At the beginning of creep, there are parallel lines for the relationship between the axial strain rate and the creep time for different OCRs. The specimens with higher OCRs are all in the state of stress dilatancy during the undrained creep. The higher the value of OCR is, the much more creep time the specimen reaching the greatest dilatancy state needs. Under the same stress ratio, the OCR is the important factor influencing the specimens to fail or not.

Translated title of the contributionInfluences of overconsolidation ratio on undrained creep behavior of overconsolidated saturated clay
Original languageChinese
Pages (from-to)426-430
Number of pages5
JournalYantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering
Volume40
Issue number3
DOIs
Publication statusPublished - 1 Mar 2018
Externally publishedYes

Keywords

  • Clay
  • Creep
  • Critical state
  • Overconsolidation
  • Triaxial test

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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