ОЦЕНКА УСТОЙЧИВОСТИ НАСЫПНЫХ СКЛОНОВ КОНЕЧНО-ЭЛЕМЕНТНЫМИ МЕТОДАМИ ПРЕДЕЛЬНОГО АНАЛИЗА Stability charts for fill slopes based on finite element lower bound limit analysis method

A. J. Li, K. Lim, Bin- Chen Benson Hsiung, W. C. Chen

Аннотация


На основе конечно-элементного метода оценки нижней границы предельной нагрузки выполнен анализ устойчивости насыпных склонов, где несвязные грунтовые материалы укладываются на коренные недренированные глины, увеличивая сдвиговую прочность толщи. Обсуждаются факторы, влияю
щие на механизмы разрушения этого типа склона. Рассматривается актуальная проблема перехода от плоских расчетных моделей к объемным с целью получения наиболее достоверной инженерной картины при решении задач по оценке устойчивости откосов. Показано, что соотношение F3D/F2D всегда больше единицы, и занижение коэффициентов устойчивости при решении задачи в её плоской поста-
новке составляет до 70%.


Полный текст статьи публикуется в английской версии журнала
«Soil Mechanics and Foundation Engineering», vol.60, No.4


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