岩土工程
堤防
渗透(HVAC)
导水率
孔隙水压力
边坡稳定性
饱和(图论)
土壤水分
安全系数
地质学
抽吸
土壤科学
材料科学
工程类
数学
复合材料
机械工程
组合数学
作者
Rakshanda Showkat,Hojjat Mohammadi,G. L. Sivakumar Babu
出处
期刊:International Journal of Geomechanics
[American Society of Civil Engineers]
日期:2022-07-01
卷期号:22 (7)
被引量:7
标识
DOI:10.1061/(asce)gm.1943-5622.0002425
摘要
Rainfall infiltration causes the collapse of unsaturated embankments due to loss of suction. In this paper, the Barcelona Basic Model (BBM), a constitutive model developed for unsaturated soils, was implemented in Fast Lagrangian Analysis of Continua (FLAC) for simulating the effect of varying rainfall intensities on compacted embankments. It was observed that large vertical deformations occur and considerably high positive pore-water pressures get developed, accounting for the collapse of an embankment. The results also show that rainfall intensity and duration affect the slope stability. A comparison was made between the results obtained using the Mohr–Coulomb model and BBM. It was found that the soil undergoes larger deformations when modeled using BBM as BBM accurately models the loss of suction upon saturation. Reliability analysis of embankment shows that probabilistic analysis provides a better assessment of slope stability rather than the factor of safety and shows that suction and hydraulic conductivity are critical parameters influencing slope reliability for unsaturated soil slope embankments.
科研通智能强力驱动
Strongly Powered by AbleSci AI