Improvement of Structural Parameters of Loess and Its Relationship with Strength Indicators
Source abstract
Abstract
This paper derives and modifies the structural quantitative indicator of loess—the structural index—based on the theory of limit equilibrium, thereby obtaining structural evolution parameters and structural modification parameters. However, since the structural index is defined for uniaxial stress states, this paper also introduces a structural parameter applicable to complex stress states—the complex stress structural parameter mτ. This parameter is not only applicable to complex stress states, but also enables the study of soils such as soft clay that are difficult to test under uniaxial compression. Additionally, it offers the advantages of requiring less testing effort, featuring simpler expression formulas, and possessing clearer physical meaning. Finally, the relationship between complex stress structure parameters and soil strength indicators was analyzed. We defined a quantitative indicator—the comprehensive structural state parameter Pcs—that reflects the combined effects of soil structural factors. By combining comprehensive structural state parameters with the physical properties of undisturbed loess (such as moisture content and dry density), it is possible to determine the strength parameters of loess under a given structural state over a wide range.
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Research context
OpenAlex topics: Soil and Unsaturated Flow · Geotechnical Engineering and Soil Mechanics · Geotechnical and construction materials studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Xi’an Key Laboratory of Environmental Geotechnical Engineering of Loess Plateau, Xi’an University of Technology, Xi’an 710048, China
Funding
National Natural Science Foundation of China · Shaanxi Key R&D Program Project · Key Laboratory Project of Shaanxi Provincial Department of Education
References (41)
Show source-provided references
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