[1]谢 星,赵法锁,王东红.Q2黄土统计损伤本构模型[J].西安科技大学学报,2009,(03):322-328.
 XIE Xing,ZHAO Fa-suo,WANG Dong-hong.Statistical damage constitutive model for Q2 loess[J].Journal of Xi'an University of Science and Technology,2009,(03):322-328.
点击复制

Q2黄土统计损伤本构模型()
分享到:

西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2009年03期
页码:
322-328
栏目:
出版日期:
2009-06-11

文章信息/Info

Title:
Statistical damage constitutive model for Q2 loess
文章编号:
1672-9315(2009)03-0322-07
作者:
谢 星1赵法锁2 王东红3
1.长安大学 地球科学与国土资源学院,陕西 西安 710054; 2.长安大学地质工程研究所, 陕西 西安 710054; 3.机械工业勘察设计研究院,陕西 西安 710043
Author(s):
XIE Xing 1ZHAO Fa-suo2WANG Dong-hong3
1.School of Earth Sciences and Resources Management,Chang'an University,Xi'an 710054,China; 2. Institute of Geological Engineering, Chang'an University,Xi'an 710054,China; 3.Institute of Geotechnical Investigation and Design,MMI, Xi'an 710043,China
关键词:
关键词: Q2黄土 Weibull分布 损伤门槛值 微元强度 软化本构模型
Keywords:
ss Weibull distribution damage threshold value micro-unit strength softening constitutive model
分类号:
P411.3
文献标志码:
A
摘要:
摘 要: 利用黄土微元强度服从Weibull随机分布的特点,引进Drucker-Prager破坏准则作为黄土微元强度分布参量,基于Q2黄土三轴应力-应变试验曲线,同时考虑了损伤门槛值的影响,建立了反映Q2黄土损伤全过程的损伤软化本构模型。在此基础上,探讨了Q2黄土损伤软化模型参数与围压和黄土含水量的关系,对其参数进行了合理修正,从而建立了更加符合实际的黄土损伤软化本构模型,并与试验结果进行对比分析,结果显示该模型的合理性,表明该模型具有广泛的工程应用前景。
Abstract:
Based on the characteristics strength of loess micro-unit with Weibull distribution,and parameters that described by distribution variable of Drucker-Prager creterion,Q2loess softening and damage constitutive model is established to reflect the full process of loess failure by using the stress-strain curves, in which the damage threshold is considered. Moreover,the relationship between model parameters,confining pressure and water content are discussed and the model parameters are modified. Accordingly,the loess softening and damage model is proposed.Comparing test results with theory results shown the model is rational with bright prospect of applications in engineering.

参考文献/References:

[1] 沈珠江.土体结构性的数学模型—21世纪土力学的核心问题[J].岩土工程学报,1996,18(1):95-97.
SHEN Zhu-jiang.The structural mathematical model of soil-the core of soil mechanics in the 21th century[J].Chinese Journal of Geotechnical Egineering, 1996.18(1):95-97.
[2] 谢定义.21世纪土力学思考[J].岩土工程学报,1997,19(4):111-114.
XIE Ding-yi. Thinking on soil mechanics in the 21th century[J]. Chinese Journal of Geotechnical Egineering,1997,19(4):111-114.
[3] 沈珠江.结构性粘土的非线性损伤力学模型[J].岩土工程学报,1993,15(3):21-28.
SHEN Zhu-jiang.The nonlinear damage mechanical model of structrual clay[J].Chinese Journal of Geotechnical Egineering,1993,15(3):21-28.
[4] 刘祖典.黄土力学与工程[M].西安:陕西科学技术出版社,1996.
LIU Zu-dian.Mechanics and engineering of loess[M].Xi'an:Shaanxi Science and Technology Press,1996.
[5] 葛修润,任建喜,蒲毅彬,等.岩土损伤力学宏细观试验研究[M].北京:科学技术出版社,2004.
GE Xiu-run,REN Jian-xi,PU Yi-bin,et al.Macro and micro experimental study on geotechnical damage mechanics[M].Beijing: Science and Technology Press,2004.
[6] 曹文贵,方祖烈,唐学军.岩石损伤软化统计本构模型之研究[J].岩石力学与工程学报,1998,17(6):628-633.
CAO Wen-gui,FANG Zu-lie,TANG Xue-jun.A study of statistical constitutive model for soft and damage rocks[J].Chinese Journal of Rock Mechanics and Engineering,1998,17(6):628-633.
[7] 曹文贵,赵明华,刘学成.基于统计损伤理论的德鲁克——普拉格岩石强度准则的修正[J].水利学报,2004,9(3):18-23.
CAO Wen-gui,ZHAO Ming-hua,LIU Xue-cheng.Modified drucker-prager strength criterion based on statistical damage theory for rock[J]. Journal of Hydraulic Engineering,2009,9(3):18-23.
[8] 罗晓辉,白世伟.结构性土体强度的统计损伤模型分析[J].岩土工程学报,2001,26(5):712-714.
LUO Xiao-hui,BAI Shi-wei.Model analysis on statistical damage of strength of cementaled soil[J].Chinese Journal of Geotechnical Egineering,2001,26(5):712-714.
[9] 赵锡宏,孙 红,罗冠威.损伤土力学[M].上海:同济大学出版社,2000.
ZHAO Xi-hong, SUN Hong, LUO Guan-wei.Damage soil mechanics[M].Shanghai:Tongji University Press,2000.
[10]王朝阳,倪万魁,蒲毅彬. 三轴剪切条件下黄土结构特征变化细观试验[J].西安科技大学学报,2006,26(1):51-54.
WANG Zhao-yang, NI Wan-kui, PU Yi-bin. Microscopic experiment under triaxial test conditions of loess structure characteristic[J].Journal of Xi'an University of Science and Technology,2006,26(1):51-54.
[11]卢全中,彭建兵.黄土体结构面的发育特征及其灾害效应[J].西安科技大学学报,2006,26(4):446-450.
LU Quan-zhong, PENG Jian-bing.Characteristics of structural planes of loess mass in loess plateau of China and its hazard effect[J].Journal of Xi'an University of Science and Technology,2006,26(4):446-450.

相似文献/References:

[1]伍永平,柴 鑫,高喜才,等.三轴MTS压缩煤岩介质局部化损伤AE参数Weibull分布特征[J].西安科技大学学报,2009,(03):253.
 U Yong-ping,CHAI Xin,et al.Weibull distribution of AE-energy-rate of coal failure under triaxial compression[J].Journal of Xi'an University of Science and Technology,2009,(03):253.

备注/Memo

备注/Memo:
收稿日期: 2008-10-12 基金项目: 科技部科研基金项目(2002CCC00200) 作者简介: 谢 星(1972-),女,湖南新邵人,博士,副教授,主要从事地质及地质工程教学与研究工作
更新日期/Last Update: 2009-06-11