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Volume 41 Issue S2
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GAO Yan-bin, LIU Jia-dan. One-dimensional stress relaxation of cohesive soils and its relationship with secondary compression[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S2): 49-52. DOI: 10.11779/CJGE2019S2013
Citation: GAO Yan-bin, LIU Jia-dan. One-dimensional stress relaxation of cohesive soils and its relationship with secondary compression[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S2): 49-52. DOI: 10.11779/CJGE2019S2013
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One-dimensional stress relaxation of cohesive soils and its relationship with secondary compression

  • 1. Department of Geotechnical Engineering College of Civil Engineering, Tongji University, Shanghai 200092, China;
    2. Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China

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  • Received Date: April 27, 2019
  • Published Date: July 19, 2019
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    • Abstract
  • The behaviors of one-dimensional relaxation have been studied by many researchers. However, the method for deducing the stress relax formulas is usually complicated. Two simple stress relaxation formulas in single-logarithmic form and double-logarithmic form are derived, which are based on the Buisman secondary compression equation and the concept of the equal-time compression line proposed by Bjerrum. The relationships between the slopes of these two types of stress relaxation formulas and the parameter ca/cc are proposed, here ca is the secondary compression index and cc is the compression index. One-dimensional secondary compression and the stress relaxation tests using Shanghai clay are conducted. The reliability of the stress relaxation formulas is verified. Moreover, the one-dimensional stress relaxing rate of general cohesive soils is estimated according to the values of ca/cc proposed by Mesri and Godlewski.
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    • References (8)
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