[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.[doi:10.13705/j.issn.1671-6833.2020.06.013]
　CHEN Zeqin,LIU Guoming.Stress and Deformation of CFRD Based on Gudehus-Bauer Subplastic Constitutive Model[J].Journal of Zhengzhou University (Engineering Science),2020,41(06):53-59.[doi:10.13705/j.issn.1671-6833.2020.06.013]
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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卷
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:
Stress and Deformation of CFRD Based on Gudehus-Bauer Subplastic Constitutive Model
作者:
陈泽钦; 刘国明
国网福建省电力有限公司电力科学研究院,福建福州350007, 福州大学土木工程学院,福建福州350108

Author(s):
CHEN Zeqin1;  LIU Guoming2
1.State Grid FuJian Electric Power Research Institute, Fuzhou 350007，China; 2.College of Civil Engineering，Fuzhou University，Fuzhou 350108，China
关键词:
Keywords:
concrete-faced rockfill dam;  rockfill;  modified Gudehus-Bauer hypoplastic model;  finite element method
DOI:
10.13705/j.issn.1671-6833.2020.06.013
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 its parameters were introduced briefly. Based on the Gudehus-Bauer hypoplastic constitutive model, the relationships between the parameters α, β and the confining pressure were established. The triaxial compression test curves of rockfill materials were simulated with the Gudehus-Bauer hypoplastic constitutive model and compared with the test values. According to the simulation results, a volumetric strain control term was added to the model, which improved the triaxial compression test volumetric strain curve of rockfill material simulated by he Gudehus-Bauer hypoplastic constitutive model. 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.

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更新日期/Last Update: 2021-02-10