| 考虑渗压的二长花岗岩流变损伤本构模型研究 |
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| 引用本文： | 李尧,王伟,王如宾,朱其志,王辉,刘志航.考虑渗压的二长花岗岩流变损伤本构模型研究[J].河北工程大学学报,2020,37(1):30-34. |
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| 作者姓名： | 李尧 王伟 王如宾 朱其志 王辉 刘志航 |
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| 作者单位： | 河海大学 岩土力学与堤坝工程教育部重点实验室,江苏 南京210024;河海大学 土木与交通学院岩土所,江苏 南京210024,河海大学 岩土力学与堤坝工程教育部重点实验室,江苏 南京210024;河海大学 土木与交通学院岩土所,江苏 南京210024,河海大学 岩土力学与堤坝工程教育部重点实验室,江苏 南京210024;河海大学 土木与交通学院岩土所,江苏 南京210024,河海大学 岩土力学与堤坝工程教育部重点实验室,江苏 南京210024;河海大学 土木与交通学院岩土所,江苏 南京210024,河海大学 岩土力学与堤坝工程教育部重点实验室,江苏 南京210024;河海大学 土木与交通学院岩土所,江苏 南京210024,河海大学 岩土力学与堤坝工程教育部重点实验室,江苏 南京210024;河海大学 土木与交通学院岩土所,江苏 南京210024 |
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| 基金项目： | 国家重点研发计划项目（2017YFC1501100）；国家自然科学基金资助项目（11672343，51679068，51679069） |
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| 摘 要： | 基于二长花岗岩的流变试验结果,采用Cross-plotting方法确定了有效应力系数,在广义Bingham模型的基础上建立了考虑渗透压力损伤的流变损伤本构模型,对新的流变损伤模型进行参数辨识,得到了流变损伤模型的参数。推导了模型的流变本构方程,并用该模型拟合了岩石流变试验的数据,拟合结果表明:该模型不仅可以很好地描述衰减流变和稳态流变过程,亦可描述岩石的加速流变阶段,从而证明该模型的可行性和合理性。
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| 关 键 词： | 岩石流变 本构关系 广义Bingham模型 非线性 渗压 |
| 收稿时间： | 2019/12/25 0:00:00 |
Study on Rheological Damage Model of Monzogranites with Permeation Pressure Considered |
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| Authors: | LI Yao WANG Wei WANG Rubin ZHU Qizhi WANG Hui LIU Zhihang |
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| Affiliation: | Key Laboratory of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu 210024, China;Geotechnical Research Institute, Hohai University, Jiangsu, Nanjing 210024, China,Key Laboratory of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu 210024, China;Geotechnical Research Institute, Hohai University, Jiangsu, Nanjing 210024, China,Key Laboratory of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu 210024, China;Geotechnical Research Institute, Hohai University, Jiangsu, Nanjing 210024, China,Key Laboratory of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu 210024, China;Geotechnical Research Institute, Hohai University, Jiangsu, Nanjing 210024, China,Key Laboratory of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu 210024, China;Geotechnical Research Institute, Hohai University, Jiangsu, Nanjing 210024, China and Key Laboratory of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, Jiangsu 210024, China;Geotechnical Research Institute, Hohai University, Jiangsu, Nanjing 210024, China |
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| Abstract: | Based on the results of the rheological test of monzogranites, the Biot coefficient was determined by cross-plotting method, the creep model based on permeation pressure damage was established on the basis of the generalized Bingham model, the creep parameters were determined by fitting the rock creep test data, and the parameters of the creep damage model were obtained. The creep constitutive equation of the model was deduced, and the data of the rock creep test were fitted with this model.The fitting results show that the model can not only describe the the decay creep and steady-state creep stage, but also describe the accelerated creep stage of the rock, thus proving the feasibility and rationality of the model. |
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| Keywords: | rock creep constitutive relation generalized Bingham model nonlinearity permeation pressure |
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