АНАЛИЗ РАБОТЫ ОСНОВАНИЯ, УСИЛЕННОГО ГЕОРЕШЕТКОЙ Analysis of interlock-enhanced integral geocell-reinforced foundation

Juan Hou, Xiangqian Lu, Xing Xing, Chenxi Chu

Аннотация


Приведены результаты лотковых штамповых испытаний основания, усиленного слоем георешетки со вставками из U-образных штифтов, устанавливаемых в предварительно просверленные отверстия в полипропиленовых лентах, образуя трехмерные ячейки (IEI geocell). Выполнено конечно-элементное моделирование с использованием программного комплекса ABAQUS и модели Друккера-Прагера. По-
казано, что георешетка сопротивляется распространению вертикального смещения на глубину и обеспечивает более равномерное снижение пиков горизонтального смещения по сравнению с неармированным основанием, что позволяет избежать локального разрушения песчаного грунта. Растягивающее напряжение концентрируется в ячейке непосредственно под фундаментом. Трение между материалом заполнения и стенкой георешетки, боковое и вертикальное запирания, эффект натянутой мембраны приводят к увеличению несущей способности и уменьшению осадки основания.

Полный текст статьи публикуется в английской версии журнала
«Soil Mechanics and Foundation Engineering», vol.61, No.3


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