Design method of soilbags for protecting cutting slopes of expansive soils

XU Yongfu; WANG Ning; HAO Guifa; ZHANG Hongri; ZOU Weilie; ZHANG Shuangcheng

doi:10.11779/CJGE20201078

Volume 45 Issue 2

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Chinese Journal of Geotechnical Engineering > 2023 > 45(2): 402-410. > DOI: 10.11779/CJGE20201078

XU Yongfu, WANG Ning, HAO Guifa, ZHANG Hongri, ZOU Weilie, ZHANG Shuangcheng. Design method of soilbags for protecting cutting slopes of expansive soils[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(2): 402-410. DOI: 10.11779/CJGE20201078

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Design method of soilbags for protecting cutting slopes of expansive soils

1.
Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
2.
Wanjiang Institute of Technology, Maanshan 243000, China
3.
Zhenjiang Highway Development Center, Zhenjiang 212127, China
4.
Guangxi Transportation Science Group Co., Ltd., Nanning 545705, China
5.
School of Civil Engineering, Wuhan University, Wuhan 430072, China
6.
School of Geological Engineering and Geomatics, Xi'an 710064, China

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Received Date: October 08, 2020
Available Online: February 23, 2023

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Abstract

Abstract

The failures and slides of slopes of expansive soils are usually characterized by shallow sliding due to the fissures in the slope surface. The separation technology is to separate the external factors that cause their water change from the slopes, effectively prevent the fissure development induced by swelling and shrinkage, and thus effectively guarantee the stability of the slopes expansive soils. The soilbag protection technology is the typical separation method for the slopes of expansive soils, because the soilbage can effectively prevent moisture change from the slope surface. As a separation technology, the soilbag plays a role in separating the moisture change factors, restraining the swelling and strengthening the slope surface. The Rankine's earth pressure theory of expansive soils is presented according to the effects of swelling pressure. The design method of soilbags to protect slope failures of expansive soils is proposed for the protection of the slopes of expansive soils. The basic heap-up units of soilbags are constructed based on the application of soilbags to the cutting slope pretection of expansive soils in Chongzuo-Aidian highway of Guangxi Province. Therefore, the design method of soilbags to protect the slopes of expansive soils is proposed and standardized.
- expansive soil,
- soilbag,
- cutting slope,
- standardization

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References (19)

References

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