نوع مقاله : پژوهشی
نویسندگان
1 استاد پژوهشگاه بین المللی زلزله شناسی و مهندسی زلزله
2 دانشکدهی فنی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات
3 دانشکدهی مهندسی عمران، دانشگاه تهران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
This paper proposes a new rotato-translational collapse mechanism consisting of three rigid blocks with both translational and rotational movements, based on the upper-bound limit analysis theorem. It is revealed that the rotational collapse mechanisms somewhat over- estimates the bearing capacity values of foundations, just as the translational collapse mechanisms. By applying the proposed mechanism to evaluate the bearing capacity of a strip footing subjected to combined loading, it became possible to improve the results of the bearing capacity analysis, particularly in constrained conditions. Comparisons are made with other analytical results to evaluate the ability of the proposed collapse mechanism and the correctness of solutions. Based on comparisons with known solutions, the method was generally found to predict the bearing capacity of foundations precisely. To specify the ability of the proposed mechanism, the bearing capacity of strip footings under combined loading over thin layer foundation soils is investigated.
کلیدواژهها [English]
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