[1]陈泽钦,刘国明.基于Gudehus-Bauer亚塑性模型的面板堆石坝应力变形研究[J].郑州大学学报(工学版),2020,41(06):53-59.
 Research on the Gudehus-Bauer hypoplastic constitutive model of rockfill and its application in the stress and deformation analysis of CFRD[J].Journal of Zhengzhou University (Engineering Science),2020,41(06):53-59.
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基于Gudehus-Bauer亚塑性模型的面板堆石坝应力变形研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
41
期数:
2020年06期
页码:
53-59
栏目:
出版日期:
2020-12-31

文章信息/Info

Title:
Research on the Gudehus-Bauer hypoplastic constitutive model of rockfill and its application in the stress and deformation analysis of CFRD
作者:
陈泽钦刘国明
文献标志码:
A
摘要:
介绍了Gudehus-Bauer亚塑性本构模型及其参数求取方法,针对堆石料在模型线性项中增加了体积应变控制项 ,并建立了拟合指数α和β与围压之间的关系,提出了新的模型拟合参数。利用改进的Gudehus-Bauer亚塑性本构模型对面板堆石坝进行了非线性有限元应力变形分析,将获取的数值结果与双屈服面模型和E-B模型对比分析。计算结果表明,改进的Gudehus-Bauer亚塑性模型计算的堆石体沉降量、水平位移分布、主应力分布与沈珠江双屈服面模型较为接近,同时克服了蓄水期邓肯E-B模型面板底部顺坡向拉应力偏大的缺点。因此,改进的Gudehus-Bauer亚塑性模型可应用于面板堆石坝的应力变形分析。
Abstract:
The Gudehus-Bauer hypoplastic constitutive model and methods for obtaining parameters were introduced briefly. Then, the new volume strain term was added to the Gudehus-Bauer hypoplastic constitutive model in linear term for rockfill, and the relationships between the parameters α, β and the confining pressure were established, what’s more, new fitting parameters were proposed. The stress-deformation analysis of CFRD was performed by the modified Gudehus-Bauer hypoplastic constitutive model with 3D Nonlinear finite element, and the results were compared with the double-yield surface model. and Duncan E-B model. The numerical results indicated that the settlement, the horizontal displacement distribution and the principal stress distribution calculated by the modified Gudehus-Bauer hypoplastic constitutive model were close to the Shen Zhujiang’s double-yield surface model. Meanwhile, it could overcome the problem of higher tensile stresses at the bottom of face slabs calculated by the Duncan E-B mode in storage period. Therefore, it could be applied to the stress-deformation analysis of CFRD.
更新日期/Last Update: 2021-02-10