论文部分内容阅读
介绍了一种力学概念明确、简单实用的非线性剪胀模型,给出了本构关系的刚度系数矩阵,应用该模型对某堆石坝工程的堆石料真三轴试验进行了计算模拟,并与试验成果进行比较,验证了模型的合理性。在此基础上,分别采用非线性剪胀模型和邓肯E–B模型完整模拟了坝体分层填筑、面板分期以及分期蓄水全过程,对坝体应力与变形、面板应力与变形计算成果进行对比分析,验证了非线性剪胀模型在面板堆石坝静力有限元分析中的适用性。
A nonlinear dilatancy model with clear and simple mechanics concept is introduced. The stiffness coefficient matrix of the constitutive relation is given. The model is applied to simulate the true triaxial tests of rockfill in a rockfill dam. Compared with the test results, the rationality of the model is verified. On this basis, the nonlinear dilatancy model and Duncan E-B model are respectively used to simulate the whole process of stratified filling, panel staging and staged water storage, and the calculation results of stress and deformation, panel stress and deformation The comparison and analysis verify the applicability of nonlinear dilatancy model in static finite element analysis of concrete faced rockfill dam.