Study on Non-Limited Earth Pressures of Soilbag-Reinforced Retaining Structures with Surcharge Loads
Abstract
:1. Introduction
2. Experimental Investigations
2.1. Model Test
2.2. Test Result
3. Analytical Approaches
3.1. Basic Equation for Non-Limited Active Earth Pressure
3.2. Determination of Kq and Kγ
- 1.
- Equation (8) represents the balance of horizontal forces:
- 2.
- Equation (9) addresses the vertical force equilibrium, given by:
- 3.
- Equation (10) pertains to the moment equilibrium:
3.3. Determination of Ex−sb
3.4. Validation
3.5. Influencing Factors Analysis
4. Conclusions
- The lateral earth pressure distribution on the soilbag-reinforced retaining wall subjected to surcharge loads under the non-limited state is non-linear. As the surcharge loads increased, there was a corresponding increase in the earth pressure.
- It was determined through experimentation that the lateral stress–strain behavior of the soilbags adheres to a linear model. Furthermore, an exponential relationship between the lateral compression modulus of the soilbags and the normal stress was established.
- The analytical solution, developed based on the force equilibrium of differential elements, proved to be highly effective in predicting the non-limited lateral earth pressure on the soilbag-reinforced retaining wall under surcharge loads. The effect of the compression modulus of the soilbag and the width of the soilbag-reinforced retaining wall on the non-limited earth pressure was examined using the analytical solution. It is shown that the earth pressure increases with the increasing compression modulus of the soilbag and the decreasing width of the wall.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Raw Materials | Mass per Unit Area (g/m2) | Tensile Strength (kN/m) | Elongation (%) | Friction Coefficient | ||
---|---|---|---|---|---|---|
Warp | Weft | Warp | Weft | |||
Polypropylene | 150 | 37.1 | 28.0 | 13.7 | 15.9 | 0.54 |
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Bian, C.; Lai, Z.; Liu, R.; Wang, Z.; Fan, K. Study on Non-Limited Earth Pressures of Soilbag-Reinforced Retaining Structures with Surcharge Loads. Materials 2024, 17, 611. https://doi.org/10.3390/ma17030611
Bian C, Lai Z, Liu R, Wang Z, Fan K. Study on Non-Limited Earth Pressures of Soilbag-Reinforced Retaining Structures with Surcharge Loads. Materials. 2024; 17(3):611. https://doi.org/10.3390/ma17030611
Chicago/Turabian StyleBian, Changrong, Zhiqiang Lai, Ruonan Liu, Zhongmei Wang, and Kewei Fan. 2024. "Study on Non-Limited Earth Pressures of Soilbag-Reinforced Retaining Structures with Surcharge Loads" Materials 17, no. 3: 611. https://doi.org/10.3390/ma17030611