渗透系数对饱和土强夯效果影响的数值模拟
来源期刊：有色金属科学与工程2012年第1期
论文作者：邓通发 吴周明 罗嗣海 桂勇
文章页码：61 - 62
关键词：饱和土;强夯;渗透系数;数值模拟;流固耦合
Key words：saturated soil; dynaruic compaction; permeability coefficient; numerical simulation; fluid-solid coupling
摘 要：采用FLAC3D数值软件建立考虑强夯非线性、大变形和流固耦合特性的饱和土地基三维强夯计算模型;应用所建立的计算模型进行渗透系数在0.0001~0.1 cm/s范围内的数值模拟计算,分析渗透系数变化时的位移、孔压、密度和塑性体积的变化特性.从数值计算结果证明了饱和土地基夯击瞬间加固效果与渗透性能有关,渗透系数越大,瞬间夯击效果越好.
Abstract:
3D calculation model of Saturated soil foundation under impacting load was established by the FLAC3D numerical software based on its non-linear character, fluid-solid coupling character and large deformation theory. The permeability coefficient ranging froru 0.0001 cm/s t0 0.1 cm/s was calculated in numerical simulation. The calculation results were applied to analyze the variation characteristics of displacement, pore pressure, density and plastic volume. The results show that the moment reinforcement effect of saturated soil is related to perrueability during impacting. The permeability coefficient increases with the adding effect of instantaneous compaction.
