粘土心墙堆石坝应力应变有限元数值分析

Stress and Strain Numerical Analysis on Clay Core Rockfill Dam with FEM

采用平面应变有限元方法模拟分析了老君山粘土心墙堆石坝施工、蓄水过程中的应力应变,应用邓肯—张E-B非线性本构模型模拟粘土心墙、坝壳、反滤层材料,分级加载模拟了坝体的施工和蓄水过程。计算结果表明,加强施工填筑管理能确保大坝安全可靠。

Stress and strain of Laojunshan clay core rockfill dam during construction and impoundment is analyzed with plain strain finite element method. A non-linear elastic E-B model proposed by Duncan and zhang is used to model the material stress-strain relationship of the clay core, the filter layer and the rock-fill dam. The courses of construction and impoundment was simulated by increasing elements step by step. Results shows that the management of construction must be strengthened to ensure the salty of the dam.