کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6752081 1430778 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Compaction-induced stress in geosynthetic-reinforced granular base course - A discrete element model
ترجمه فارسی عنوان
استحکام ناشی از تراکم در پایه گرانشی تقویت کننده ژئوسنتتیک - یک مدل عنصر گسسته
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
A discrete element method (DEM) model was used to simulate the development of compaction-induced stress in a granular base course, with and without geogrid reinforcement. The granular base course was modeled as a mixture of uniformly sized triangular particles. The geogrid was modeled as a series of equally spaced balls that interact with each other through long-range interaction contacts. The long-range interaction contact was also used to simulate a deformable subgrade. The compactor was modeled as a solid cylinder rolling at a constant speed. The DEM model shows that the geogrid-reinforced granular base course gains additional compaction-induced stress due to the residual tensile stress developed in the geogrid. The residual tensile stress in the geogrid increases with the number of compaction passes. Parametric analyses were also conducted to assess the effects of geogrid stiffness and subgrade modulus on the compaction-induced stress.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rock Mechanics and Geotechnical Engineering - Volume 10, Issue 4, August 2018, Pages 669-677
نویسندگان
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