基于非线性剪胀模型的面板堆石坝应力变形分析

发布时间：2018-04-26 04:30

本文选题：堆石料 + 应力应变关系　；参考：《岩土工程学报》2017年S1期

【摘要】：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。
[Abstract]:In this paper, a simple and practical nonlinear shear expansion model with clear mechanical concept is introduced. The stiffness coefficient matrix of constitutive relation is given, and the true triaxial test of rockfill material in a rockfill dam project is simulated by the model. Compared with the experimental results, the rationality of the model is verified. On this basis, the nonlinear shear expansion model and Duncan E / B model are used to simulate the whole process of the dam body's layered filling, face slab stage and water storage by stages, respectively. The results of stress and deformation of dam body and the calculation results of face slab stress and deformation are compared and analyzed. The applicability of nonlinear shear expansion model in static finite element analysis of face rockfill dam is verified.
【作者单位】：长江科学院水利部岩土力学与工程重点实验室;中国电建集团成都勘测设计研究院有限责任公司;
【基金】：国家自然科学基金项目(51379021,51309024) 长江科学院创新团队项目(CKSF2015051/YT) 中央级科研院所基本科研业务费项目(CKSF2014055/YT)
【分类号】：TV641.43

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