ВЛИЯНИЕ МИНЕРАЛЬНОГО СОСТАВА ВОДОНАСЫЩЕННОЙ ГЛИНЫ НА МОДУЛЬ СДВИГА И КОЭФФИЦИЕНТ ДЕМПФИРОВАНИЯ Effects of clay minerals on small-strain shear modulus and damping ratio of saturated clay

P. LIN, Junjun NI, A. GARG, S.-M. YU


Изучено влияние процентного соотношения монтмориллонита и каолинита, а также времени консолидации, на динамический модуль сдвига и коэффициент демпфирования водонасыщенных глинистых грунтов. Для испытаний применялось резонансное колонное устройство. При малой деформации сдвига (0,001%) модуль сдвига и коэффициент демпфирования увеличивались на 57% и 105%, соответственно, когда коэффициент соотношения монтмориллонита и каолинита (МК) повышался с 0,25 до 4. При более высоком МК максимальный модуль сдвига увеличивался с большей скоростью со временем консолидации, а затем становился стабильным. В отличии от коэффициента демпфирования, который увеличивался медленнее с ростом деформаций сдвига при
более высоких МК. При деформации сдвига более 0,01% была обнаружена отрицательная корреляция коэффициента демпфирования с коэффициентом содержания монтмориллонита и каолинита.


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