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УПРУГОПЛАСТИЧЕСКИЙ ПРОГНОЗ ОСАДОК ПЛИТНОГО ФУНДАМЕНТА, УСИЛЕННОГО СВАЯМИ РАЗНОЙ ДЛИНЫ С ПРОМЕЖУТОЧНОЙ ГРУНТОВОЙ ПОДУШКОЙ Elasto – plastic analysis for load-settlement prediction of vertically loaded cushioned piled-rafts with unequal pile lengths

Yuancheng Guo, Jun Zhao, Mingyu Li, Yunlong Liu, Siqiang Hou, Bantayehu Uba Uge

Аннотация


Предложена методика оценки осадки при нагружении плитного фундамента, усиленного сваями разной длины, с компенсационным слоем грунта (грунтовой подушкой) непосредственно под плитой, учитывающая взаимодействие элементов фундаментной конструкции. Для описания относительного смещения грунта вокруг сваи во взаимосвязи с сопротивлением по боковой поверхности и/или под подошвой
сваи с учетом негативного трения на контакте «свая–грунт» рассматривается упругопластическое поведение. Грунтовая подушка моделируется в рамках Винклеровского подхода. Прогноз по предложенному методу показал хорошее соответствие результатам, полученным при крупномасштабном лабораторном
моделировании для свайно-плитного фундамента размерами 2×2 м с длинными и короткими сваями.


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Литература


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