FEM simulation of the failure of reinforced sand slopes subjected to footing load
FEM simulation of the failure of reinforced sand slopes subjected to footing load
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DOI：
10.1680/gein.2004.11.1.1
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发表时间：
2004
影响因子：
4.5
通讯作者：
N. Kotake;F. Tatsuoka;Tadatsugu Tanaka;M. Siddiquee;Ching-Chuan Huang
中科院分区：
文献类型：
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作者：
N. Kotake;F. Tatsuoka;Tadatsugu Tanaka;M. Siddiquee;Ching-Chuan Huang
通过室内模型试验，对未加筋砂质边坡和加筋带加筋砂质边坡在坡顶设置刚性条形基础的情况下，在竖向荷载和中心荷载作用下发生承载力破坏的模型试验结果进行了有限元数值模拟。在FEM分析中，考虑了以下因素的影响：（a）围压;（B）各向异性;（c）非线性峰前应变硬化和应变软化;（d）非线性;以及（e）应变局部化为剪切带或厚度与颗粒尺寸成比例的剪切带。对于未加筋和加筋的砂质边坡的有限元模拟一般是在良好的协议与物理实验结果方面的荷载-沉降关系，应变场显示的破坏模式，和分布的钢筋拉力为不同的钢筋布置检查。文中还给出了有限元分析的应力场。
The results from a series of laboratory model tests on unreinforced sand slopes and those reinforced with reinforcing strips that were brought to bearing capacity failure by vertical and central loading using a rigid strip footing placed on the slope crest were simulated numerically by the FEM. In the FEM analysis, the effects of the following factors were taken into account: (a) confining pressure; (b) anisotropy; (c) non-linear pre-peak strain-hardening and strain-softening; (d) dilatancy; and (e) strain localisation into a shear band or bands having a thickness in proportional to the particle size. The FEM simulation for both unreinforced and reinforced sand slopes was generally in good agreement with the physical experimental results with respect to the load–settlement relationships, the strain fields showing failure modes, and the distributions of reinforcement tensile force for the different reinforcement arrangements examined. The stress fields from the FEM analysis are also presented.