[1]王东红,谢 星,赵法锁.考虑蠕变损伤的Q2黄土流变本构模型[J].西安科技大学学报,2010,(06):682-686725.
 WANG Dong-hong,XIE Xing,ZHAO Fa-suo.Creep damage rheological constitutional model for Q2 loess[J].Journal of Xi'an University of Science and Technology,2010,(06):682-686725.
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考虑蠕变损伤的Q2黄土流变本构模型()
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2010年06期
页码:
682-686725
栏目:
出版日期:
2010-11-11

文章信息/Info

Title:
Creep damage rheological constitutional model for Q2 loess
文章编号:
1672-9315(2010)06-0682-05
作者:
王东红1谢 星2赵法锁3
1. 机械工业勘察设计研究院 测试公司,陕西 西安 710043; 2.长安大学 地球科学与国土资源学院,陕西 西安 710054; 3.长安大学 地质工程与测绘学院,陕西 西安 710054
Author(s):
WANG Dong-hong 1XIE Xing 2ZHAO Fa-suo 3
1.China Jikan Geotechnical Institute Testing Co., Xi'an 710043,China; 2. School of Earth Sciences and Resources Management,Chang'an University, Xi'an 710054,China; 3.School of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, China
关键词:
Q2黄土 瞬时损伤 蠕变损伤 流变本构模型
Keywords:
Q2 loess instantaneous damage creep damage rheological constitutional model
分类号:
TU411.3
文献标志码:
A
摘要:
根据Q2黄土的流变特征,其粘弹性特性可采用五元件广义的Kelvin模型来描述,其线性粘塑性特性可用与一滑块并联的Maxwell模型来描述,而非线性粘塑性特性,可通过损伤与塑性应变的耦合作用来反映。在考虑黄土瞬时损伤、蠕变损伤及黄土粘弹塑性组合模型的基础上,应用应变等效原理,建立了蠕变损伤流变本构模型,并通过拟牛顿法确定了相应的模型参数。该模型能够较好地描述黄土的加速蠕变过程,具参数少、适用性广的特点。
Abstract:
On the basis of rheological properties of Q2 loess, viscoelastic creep phase is simulated by the generalized Kelvin model,linear viscoplastic creep phase is simulated by the Maxwell model which is parallel connected by a slider, and nonlinear viscoplastic creep phase is reflected by couple of damage and plastic strain. The creep damage constitutional model is estabished from hypothesis of strain equivalence, in which instantaneous damage and creep damage are considered.The parameters can be determined by Quasi-Newton methods.The creep damage rheological constitutional model can describe the accelerated rheological stage of loess,and the parameters are less,and the model can be applied to practice well.

参考文献/References:

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相似文献/References:

[1]戚 炜,王艳婷,赵法锁,等.西安地区Q2黄土应力-应变-时间关系的试验研究[J].西安科技大学学报,2008,(04):690.
 QI Wei,WANG Yan-ting,ZHAO Fa-suo,et al.Experiment on stress-strain-time relationship of Q2loess in Xi'an[J].Journal of Xi'an University of Science and Technology,2008,(06):690.

备注/Memo

备注/Memo:
收稿日期: 2009-01-07 基金项目: 科技部项目(2002CCC00200) 通讯作者: 王东红(1973-),男,内蒙古察右前旗人,高级工程师,从事岩土工程试验与检测工作.
更新日期/Last Update: 2010-11-11