[1]曾祥勇,等.一种粘弹塑性边界面粘土模型的损伤函数引入研究[J].西安建筑科技大学学报(自然科学版),2018,50(06):783-787.[doi:10.15986/j.1006-7930.2018.06.003]
　ZENG Xiangyong,,et al.Research of an introduction of a damage function into an isotropic elastoplastic-viscoplastic damage bounding surface soil model[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2018,50(06):783-787.[doi:10.15986/j.1006-7930.2018.06.003]
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一种粘弹塑性边界面粘土模型的损伤函数引入研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
50
期数:
2018年06期
页码:
783-787
栏目:
出版日期:
2018-12-31

文章信息/Info

Title:
Research of an introduction of a damage function into an isotropic elastoplastic-viscoplastic damage bounding surface soil model
文章编号:
1006-7930(2018)06-0783-05
作者:
曾祥勇1;  2;  3; 郝泳1;  2
1. 重庆大学 土木工程学院，重庆 400045；2. 重庆大学 山地城镇建设与新技术教育部重点实验室，重庆 400045；3.重庆房地产职业学院 房地产建设工程系，重庆 401331
Author(s):
ZENG Xiangyong1;  2;  3;  HAO Yong1;  2
1. School of Civil Engineering, Chongqing University, Chongqing 400045, China; 2. Key Laboratory of New Technology for Construction of Cities in Mountain Area, Ministry of Education, Chongqing University, Chongqing 400045, China; 3. Real Estate Construction Engineering Department, Chongqing Real Estate College, Chongqing 401331, China
关键词:
岩土力学; 损伤函数; 时间关联分析; 蠕变开裂模拟; 各向同性粘弹塑性边界面粘土模型
Keywords:
soil and rock mechanics;  damage function;  time-dependent analysis;  creep rupture simulation;  isotropic elastoplastic-viscoplastic bounding surface cohesive soil model
分类号:
TU94+2；TG115.28
DOI:
10.15986/j.1006-7930.2018.06.003
文献标志码:
A
摘要:
针对各向同性粘弹塑性边界面模型不能模拟粘土不排水蠕变三轴试验中的土样开裂后变形的问题，通过试算研究，提出了一个损伤函数．通过将该函数与Kaliakin和Dafalias所提出的各向同性粘弹塑性边界面模型中过载函数相乘的方式，将该损伤函数引入到了模型之中，由此形成了一个各向同性的粘弹塑性损伤边界面新模型．根据该模型和对应的损伤参数，对加拿大温哥华市附近的Haney粘土试验进行了模拟验证．数值模拟结果表明，对于不同粘土土样的高偏应力加载等级，采用合适参数值的损伤函数对于模拟三轴不排水蠕变试验中的蠕变开裂及破坏变形令人满意，表明该损伤函数的引入有效可行，具有良好的理论及应用价值．
Abstract:
Point to the problem that isotropic elastoplastic-viscoplastic damage bounding surface model which put forward by Kaliakin and Dafalias cannot simulate the undrained creep rupture deformation of cohesive soil triaxial test, according to trial computation research, a damage function is put forward. By the multiplication of the damage function with overstress function, damage simulation is feasible by the model, thus form an isotropic elastoplastic-viscoplastic damage bounding surface new model. By the new model and corresponding damage parameters, simulation verification of Canada Vancouver city nearby Haney clay undrained creep tri-axial tests is carried out. Simulation results show that the new model can simulate creep rupture and failure deformation well in high load level with proper parameters. It is also show the effectiveness and feasibility of the application of damage function, and the damage function not only has theoretical value, but also has practical value.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-05-24修改稿日期:2017-05-31
基金项目:国家自然科学基金资助(51468008)
第一作者:曾祥勇(1978-)，男，博士，副教授，主要从事岩土工程方面的研究.E-mail: zeng_xiangyong@126.com
更新日期/Last Update: 2019-02-14