面板坝堆石料四参数非线性K-G模型研究

金鑫鑫; 杜丽惠; 王晓玥

doi:10.11779/CJGE201410024

面板坝堆石料四参数非线性K-G模型研究 English Version

清华大学水沙科学与水利水电工程国家重点实验室,北京 100084

基金项目: 国家自然科学基金项目（51279082）; 国家自然科学基金青年科学基金项目（50809033）

详细信息

作者简介:
金鑫鑫(1987- ),女,博士,主要从事堆石料本构模型研究。E-mail: jxxkl@sina.cn。

计量
- 文章访问数: 0225
- HTML全文浏览量: 0
- PDF下载量: 0218
出版历程
- 收稿日期: 2013-12-16
- 发布日期: 2014-10-19

Nonlinear four-parameter K-G model for rockfills

The State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China

摘要

摘要: 堆石料的广泛应用使得对其本构关系的研究至关重要。在热力学原理基础上,由吉布斯自由能函数出发,基于内变量热力学的理论基础,推导堆石料四参数非线性K-G模型,模型理论基础严谨,能够反映堆石料的非线性、压硬性、部分各向异性等主要工程性质,模型参数数量少并独立。针对室内等应力比试验和面板坝的二维应力应变数值模拟,验证了四参数K-G模型的合理性。依托目前世界最高混凝土面板堆石坝233 m的水布垭面板坝,进行了坝体的三维应力变形计算。结果表明：坝体的应力变形分布趋势合理,在填筑工况下,四参数K-G模型计算的垂直位移为2.02 m,较其他非线性模型更接近于实测值,因此四参数K-G模型可以用于面板坝堆石体的应力变形计算。
- 面板堆石坝 /
- 本构模型 /
- 吉布斯自由能 /
- 四参数K-G模型
Abstract: The researches on constitutive relationship for rockfills are significant because of its wide application. Based on the theory of thermodynamics, a four-parameter K-G model is derived from the Gibbs free energy function. The model is theoretically rigorous and can reflect the nonlinearity, pressure rigidity, partly anisotropy and other engineering properties. Most importantly, only four parameters which are independent of each other are needed in this model. The iso-stress ratio tests and numerical simulations of two-dimensional CFRD validate the reasonability of the model. Furthermore, three-dimensional static calculation of Shuibuya CFRD is performed. The results show that the vertical displacement is 2.02 m, which is closer to the measured value than that of other nonlinear models. Therefore, the four-parameter K-G model can be used to calculate the stress and deformation of CFRDs.
- CFRD /
- constitutive model /
- Gibbs free energy /
- four-parameter K-G model

HTML全文

参考文献(15)

[1]	马洪琪, 曹克明. 超高面板坝的关键技术问题[C]// 中国大坝技术发展水平与工程实例. 北京: 中国水利水电出版社,州2007: 52-61. (MA Hong-qi, CAO Ke-ming. Key technologyof super-high concrete face rockfill dams[C]// Large DamConstruction in China State of the Art and Case Histories. Beijing: China Water Power Press, 2007: 52-61. (in Chinese))
[2]	蒋国澄, 赵增凯. 中国混凝土面板堆石坝的近期进展[J]. 贵州水力发电, 2004, 18(5): 1-4. (JIANG Guo-cheng, ZHAO Zeng-kai. Recent development of concrete face rockfill dam of China[J]. Guizhou Water Power, 2004, 18(5): 1-4. (in Chinese))
[3]	蒋彭年. 土的本构关系[M]. 北京: 科学出版社, 1982: 102-103. (JIANG Peng-nian. Constitutive relations of soils[M]. Beijing: Science Press, 1982: 102-103. (in Chinese))
[4]	BOYCE H R. A non-linear model for the elastic behaviour of granular materials under repeated loading[C]// Brookfield Pub Co. Swansea, 1980.
[5]	HOULSBY G T, PUZRIN A M. A thermomechanical framework for constitutive models for rate-independent dissipative materials[J]. International Journal of Plasticity, 2000, 16(9): 1017-1047.
[6]	COLLINS I F, MUHUNTHAN B. On the relationship between stress-dilatancy, anisotropy, and plastic dissipation for granular materials[J]. Géotechnique, 2003, 53(7): 611-618.
[7]	HOULSBY G T, AMOROSI A, ROJAS E. Elastic moduli of soils dependent on pressure: a hyperelastic formulation[J]. Géotechnique, 2005, 55(5): 383-392.
[8]	EINAV I. Pressure-dependent elasticity and energy conservation in elastoplastic models for soils[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2004, 130: 81-92.
[9]	NAYLOR D J. Stress-strain laws for soil[M]// Developments in Soil Mechanics, SCOTT C R, ed. Essex: Applied Science Publishers Ltd, 1978: 39-68.
[10]	GAO L. The non-linear uncoupled KG model for rockfill materials and its verification[C]// 14th International Conference on Soil Mechanics and Foundation Engineering. Hamburg, 1997.
[11]	相彪, 张宗亮, 迟世春, 等. 复杂应力路径下堆石料本构关系研究[J]. 岩土力学, 2010(6): 1716-1722. (XIANG Biao, ZHANG Zong-liang, CHI Shi-chun, et al. Study of constitutive relations of rockfill under complex stress path[J]. Rock and Soil Mechanics, 2010(6): 1716-1722. (in Chinese))
[12]	张林洪, 刘荣佩, 谢婉丽, 等. 应力比路径条件下堆石料的应力应变特性[J]. 大坝观测与土工测试, 2001(4): 46-49. (ZHANG Lin-hong, LIU Rong-pei, XIE Wan-li, et al. Properties of stress and strain of rockfill under the path of equal stress ratio[J]. Dam Observation and Geotechnical Tests, 2001(4): 46-49. (in Chinese))
[13]	李昌彩. 水布垭面板堆石坝前期关键技术研究[M]. 北京:中国水利水电出版社, 2005. (LI Chang-cai. Shuibuya CFRD key technologies in prophase[M]. Beijing: China Water Power Press, 2005. (in Chinese))
[14]	杜丽惠. 水布垭面板堆石坝的反馈分析研究[C]// 高堆石坝筑坝与工程安全技术研讨会论文集. 昆明, 2011. (DU Li-hui. Back analysis on deformation of Shuibuya CFRD[C]// High Rockfill Dam and Engineering Safety Technical Symposium Proceedings. Kunming, 2011. (in Chinese))
[15]	张岩, 燕乔. 水布垭面板堆石坝变形性态分析[J]. 大坝与安全, 2010(2): 40-44. (ZHANG Yan, YAN Qiao. Analysis on the deformation behavior of Shuibuya concrete face slab rock-fill dam[J]. Large Dam & Safety, 2010(2): 40-44. (in Chinese))

施引文献

资源附件(0)

计量

文章访问数:
HTML全文浏览量: 0
PDF下载量:
被引次数: 0

面板坝堆石料四参数非线性K-G模型研究 English Version

作者简介: 金鑫鑫(1987- ),女,博士,主要从事堆石料本构模型研究。E-mail: jxxkl@sina.cn。

计量

出版历程

Nonlinear four-parameter K-G model for rockfills

计量

出版历程

目录

作者简介:
金鑫鑫(1987- ),女,博士,主要从事堆石料本构模型研究。E-mail: jxxkl@sina.cn。