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首页> 外文会议>International conference of Chinese transportation professionals;ICCTP 2011 >Experimental Research on the Shear Strength Parameters between the Freezing and Thawing Surface of Soil Slope in Seasonal Frozen Regions
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Experimental Research on the Shear Strength Parameters between the Freezing and Thawing Surface of Soil Slope in Seasonal Frozen Regions

机译：季节性冻区土坡冻融面抗剪强度参数试验研究

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摘要

In seasonal frozen regions, shallow landslide hazards in soil slopes usually happen. The failure surface is always freezing and thawing surface in the soil slope, so the direct influence factor of soil slope failure is the soil shear strength of the freezing and thawing (F-T) surface in this region. The shear strength of the soil is determined by the two parameters of cohesion "c" and friction angle "ψ". In this research model the experiment of F-T soil interfacing with different aggregate materials is designed by alternating the F-T cycle times and the water content of soil to obtain the c and the ψ. Finally the deterioration modal of the two shear strength parameters of soil interfacing with the increase of water content and freezing and thawing circle times is put forward. The results demonstrate that, to analyze the slope stability in the seasonal frozen regions using shear strength reduction method, the two deterioration modals can provide the data reference for the analysis, and the consult for the soil slope design and stability analysis in seasonal frozen regions could be offered.
机译：在季节性冰冻地区，土壤斜坡通常发生浅层滑坡灾害。土质边坡的破坏面始终是冻融面，因此，土质边坡破坏的直接影响因素是该区域冻融（F-T）面的土抗剪强度。土壤的剪切强度由内聚力“ c”和摩擦角“ψ”的两个参数确定。在该研究模型中，通过将F-T循环时间和土壤含水量交替以获得c和ψ，设计了F-T土与不同骨料连接的实验。最后提出了土壤界面的两个抗剪强度参数随含水量的增加以及冻融循环时间的劣化模态。结果表明，利用剪切强度折减法对季节性冻土区边坡稳定性进行分析，两种劣化模式可以为分析提供数据参考，并为季节性冻土区土质边坡设计和稳定性分析提供参考。被提供。

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