کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
307278 513347 2014 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling of uniformly loaded circular raft resting on stone column-improved ground
ترجمه فارسی عنوان
مدل سازی یک قایق دایره ای بارگیری شده روی ستون سنگ - زمین بهبود یافته
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی

In the present paper, a mechanical model has been developed to study the behavior of uniformly loaded circular raft resting on stone column-improved ground. The axi-symmetric condition was considered in the analysis. The raft was idealized by a circular plate. The soft foundation soil and granular fill were idealized as the spring-dashpot element and the Pasternak shear layer, respectively. The stone columns were modeled as stiff non-linear springs. To perform an axi-symmetric analysis, stone columns are converted into equivalent concentric rings with one stone column at the center. The finite difference method is used to solve the governing differential equations. The effect of different parameters on the behavior of the circular raft over stone column-reinforced ground was also studied. It was observed that the effect of the modular ratio on the rate of decrease of vertical settlement, radial and tangential moment and the rate of increase of shear force reduces sharply above the value of 40. The shear force developed at the edge of the stone column was critical when the spacing to diameter ratio was around 2.5.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soils and Foundations - Volume 54, Issue 6, December 2014, Pages 1212–1224
نویسندگان
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