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Research on the structural parameters of loess based on shear strength
Xiao-Juan Wu1, Fa-Ning Dang2, Jia-Qi Wang3
1Xi'an University of Technology, Xi'an City, 710048, Shaanxi Province, China. 1190711004@stu.xaut.edu.cn.
Scientific Reports
|January 24, 2026
Summary
This study introduces a new structural parameter for loess, overcoming limitations of existing methods. The novel parameter accurately reflects loess structure and mechanical strength across various conditions.
Area of Science:
- Geotechnical Engineering
- Soil Mechanics
- Earth Sciences
Background:
- Existing loess structural parameters are limited by experimental conditions and stress-strain states.
- These limitations hinder accurate representation of the relationship between loess structure and mechanical strength.
- This poses a significant challenge to advancing loess structural research.
Purpose of the Study:
- To propose a novel structural parameter for loess based on complex stress states.
- To develop a parameter that directly reflects the coupling between structural characteristics and mechanical strength.
- To create a universally applicable parameter independent of specific experimental conditions.
Main Methods:
- Utilizing shear strength theory as the foundational support.
- Developing a new structural parameter applicable to complex stress states.
- Conducting triaxial shear tests on loess samples.
Main Results:
- Systematic analysis of shear strength and new structural parameter variations under different moisture contents and dry densities.
- Demonstration that the new parameter reflects the coupling between loess structure and mechanical strength.
- Verification of the parameter's rationality and stability through correlation analysis.
Conclusions:
- The proposed complex stress-type structural parameter offers a more reliable indicator for loess structure evaluation.
- This parameter demonstrates universality, being independent of specific stress states and experimental conditions.
- The study provides a new perspective for understanding the structural control mechanisms of loess mechanical behavior.
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