کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6712176 1428723 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Geometric anisotropy modeling and shear behavior evaluation of graded crushed rocks
ترجمه فارسی عنوان
مدل سازی بی عدالتی هندسی و ارزیابی رفتار برشی سنگ های خرد شده درجه
کلمات کلیدی
روش عنصر گسسته، بی نهایت هندسی، رفتار برشی، سنگ های خرد شده درجه بندی شده، تست برشی دو طرفه، نسبت کالیفرنیا،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
To reveal the meso-mechanical mechanism of shear behaviors in the graded crushed rocks (GCRs), which are heterogeneous in geometry and widely used in the flexible pavement, a numerical technique was proposed to simulate the geometric anisotropy of the GCRs using randomly generated models. Then, studies on meso-mechanical responses during the loading were performed through the biaxial shear test and California bearing ratio (CBR) test. The results showed that the changes of both friction and anisotropy had a similar trend with the particle size enlarging in the dense assembly, which maintain stable when the size is less than 3.0 mm. In addition, the breaking sieve (BS) between coarse and fine aggregates was six times of the base diameter (0.8 mm). The predicted shear properties in macrostructure were in good agreement with those laboratory measurements. For the shear behaviors, the fractures and force chains were mainly distributed in the area of action that was limited by force size and side boundary.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 183, 20 September 2018, Pages 346-355
نویسندگان
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