Estimation of Active Earth Pressure for Narrow Unsaturated Backfills Considering Soil Arching Effect and Interlayer Shear Stress
نویسندگان
چکیده
Affected by climatic conditions such as rainfall, evaporation and air temperature, most of the backfill soil is in an unsaturated state, decrease matric suction leads to failure retaining structure. In view this, this study takes vertical rigid wall with narrow research object, assuming that behind forms a circular arch considering interlayer shear stress; thus, analytical solution active earth pressure derived based on thin layer element method. The reliability method verified comparing experimental existing theoretical results. A parameter analysis demonstrates increase interface friction angle moving wall–soil, average stress coefficient zone I II increases gradually, but fixed decreases; effective internal cohesion, decreases tension crack depth increases; angle, upper part slightly, while lower obviously; suction, first rapidly then decreases, distribution pattern horizontal remains unchanged; aspect ratio, when ratio smaller, attenuation more obvious; until reaches certain value, basically unchanged.
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ژورنال
عنوان ژورنال: Sustainability
سال: 2022
ISSN: ['2071-1050']
DOI: https://doi.org/10.3390/su141912699