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Force analysis of slope reinforced by Frame-Anchor-Support-Structure based on improved horizontal slice method
Guang-Wen Fang1, Fei Guo1, An-Ping Huang1
1School of Environment and Urban Construction, Lanzhou City University, Lanzhou, China.
Plos One
|February 7, 2025
Summary
This study introduces an improved horizontal slice method for analyzing slopes reinforced with Frame-Anchor-Support-Structures (FASS). The new method accurately calculates forces, providing insights into FASS performance for slope stabilization.
Area of Science:
- Geotechnical Engineering
- Civil Engineering
- Slope Stability Analysis
Background:
- Frame-Anchor-Support-Structures (FASS) are crucial for slope stabilization.
- Accurate stress analysis is vital for ensuring slope safety.
- Traditional methods require enhancement to incorporate FASS effects.
Purpose of the Study:
- To develop an improved horizontal slice method for FASS-reinforced slopes.
- To derive force calculation formulas for FASS-reinforced slopes.
- To analyze the distribution of forces and the impact of loads on FASS-reinforced slopes.
Main Methods:
- Modified traditional horizontal slice method.
- Incorporation of inter-strip forces and FASS effects.
- Comparison with the overall sliding wedge method for validation.
Main Results:
- The proposed method shows reasonable accuracy compared to the sliding wedge method (within 9% difference).
- Lateral earth pressures calculated are slightly lower than the sliding wedge method.
- Force distribution (earth pressure, FASS shear stress, stabilized soil forces) is characterized by lower values at the ends and higher in the middle, independent of top loads.
Conclusions:
- The improved horizontal slice method provides a reliable approach for analyzing FASS-reinforced slopes.
- Understanding force distribution is key for optimizing FASS design and placement.
- The findings offer valuable guidance for the practical calculation and analysis of forces in reinforced slopes.
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