МОДЕЛИРОВАНИЕ ПОВЕДЕНИЯ ГРАВИЙНОDГЛИНИСТОГО ГРУНТА ПРИ ТРЕХОСНЫХ ИСПЫТАНИЯХ The behavior of Gravel-soil Interface during triaxial testing of the Mixed Soil

Boning Zheng, D. ZHANG, G. WANG, Z. CHEN, H. SANG, Y. GAO

Аннотация


С помощью методов компьютерной томографии, цифровой обработки изображений, реверсивной инженерной реконструкции была создана 3D численная модель гравелистоглинистой грунтовой смеси. Проведено численное моделирование процесса трехосного испытания цилиндри
ческих образцов диаметром 100 и высотой 200 мм в стабилометрическом приборе. Движение гравийных частиц различного размера (10…25 мм) контролировалось и анализировалось на основе предложенного геометрического метода особых точек. Исследовалось и описывалось взаимодействие между частицами гравия и глинистой массой и влияние этого взаимодействия на характер деформирования и разрушения образцов при трехосном испытании в зависимости от количественного содержания и пространственного положения гравия, а также величины обжимающего
давления. Показано хорошее совпадение результатов численного 3D моделирования и экспериментальных данных.


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