Research on the damaging mechanisms of expansive soil in subgrade

Xiao, Jian; Zha, Xudong; Zhang, Hongri; Yang, Jiming

doi:10.1080/15376494.2022.2156004

Cited by 5 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cracks tend to form in expansive soils exposed to wet-dry cycles. Increasing the number of wet-dry cycles can lead to the expansion of a substantial number of secondary cracks and damage to the slope [102,103]. Rainwater infiltration similarly affects the slope safety factor and contributes to slope failure [10,[104][105][106][107].…”

Section: Numerical Simulationmentioning

confidence: 99%

“…Through SEEP/W and SLOPE/W, Boluk et al [109] proved that soil cracking and strength reduction caused by wet-dry cycles are the key factors in the sudden reduction of the safety factor of expansive soil slopes. Additionally, the effects of human activities, such as top-of-slope loading, can reduce the slope factor of safety [103,110]. Slope protection should be carried out on newly excavated expansive soil slopes in a timely manner to avoid damage to the slopes caused by wet-dry cycles.…”

Section: Numerical Simulationmentioning

confidence: 99%

See 1 more Smart Citation

Failure Mechanisms and Protection Measures for Expansive Soil Slopes: A Review

Luo,

2024

Sustainability

View full text Add to dashboard Cite

Due to the significant hydrophilicity and cracking properties of expansive soils, expansive soil slopes are prone to destabilization and landslides after rainfall, seriously threatening the safety of buildings, highways, and railroads. Substantial economic losses often accompany the occurrence of expansive soil slope disasters; thus, it is of great significance to understand the slope failure mechanisms experienced by expansive soil slopes and to prevent expansive soil slope disasters. In this paper, the current research status of the landslide failure mechanism of expansive soil slopes is systematically reviewed based on three research methods: field test, model test, and numerical simulation. The failure mechanisms of expansive soil slopes and the main influencing factors are summarized. Based on the failure mechanisms, three protection principles (waterproofing and water blocking, swelling–shrinkage deformation limitation, and crack inhibition and strength enhancement) that can be followed for disaster prevention of expansive soil slopes are proposed. The research status and advantages and disadvantages of these protection methods are reviewed, and future researchable directions of the stability of expansive soil slopes and slope protection methods are explored. Based on the previous work, a new flexible ecological slope protection system with a double waterproof layer is proposed for expansive soil slopes to realize ecological, efficient, and long-term protection. This paper thus aims to provide technical reference for the prevention and control of slope engineering disasters in expansive soil areas.

show abstract