[1]关 虓,牛荻涛,吴 博,等.纤维混凝土受压细观统计损伤本构模型研究[J].西安建筑科技大学学报:自然版,2015,(05):678-683.[doi:DOI:10.15986/j.1006-7930.2015.05.012]
 GUAN Xiao,NIU Ditao,WU Bo,et al.Research on meso stochastic damage constitutive model of fiber concrete under compression[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2015,(05):678-683.[doi:DOI:10.15986/j.1006-7930.2015.05.012]
点击复制

纤维混凝土受压细观统计损伤本构模型研究()
分享到:

西安建筑科技大学学报:自然版[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2015年05期
页码:
678-683
栏目:
出版日期:
2015-10-29

文章信息/Info

Title:
Research on meso stochastic damage constitutive model of fiber concrete under compression
文章编号:
1006-7930(2015)05-0678-06
作者:
关 虓牛荻涛吴 博王家滨
 西安建筑科技大学土木工程学院,西安 710055
Author(s):
GUAN Xiao NIU Ditao WU Bo WANG Jiabin
(School of Civil Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China)
关键词:
细观统计损伤力学Weibull 分布函数损伤本构模型塑性应变损伤阈值
Keywords:
microscopic statistical mechanics weibull distribution function damage constitutive model plastic strain damage threshold [1-3]
分类号:
TU528.07
DOI:
DOI:10.15986/j.1006-7930.2015.05.012
文献标志码:
A
摘要:
分别对31 个普通混凝土试块、38 个钢纤维混凝土试块及11 个聚丙烯纤维混凝土进行了单轴受压本构试验研究,采
用卡方检验方法对试验结果进行统计分析及假设检验,确定了以峰值应变为损伤变量的概型分布.基于唯象细观统计损伤力
学及热力学的相关理论,在传统模型基础上引入了损伤阈值概念,并研究了不同混凝土损伤阈值取值问题.同时,探讨了塑
性应变对本构模型的影响,建立了考虑塑性应变及损伤阈值的纤维混凝土单轴受压细观统计损伤本构模型.研究结果表明:
损伤变量较好的服从Weibull 分布函数;普通混凝土损伤阈值γ 为0.6 倍峰值应变,掺入纤维后,损伤阈值γ 提高为0.8 倍峰
值应变;所建立的本构模型能够有效地描述纤维混凝土的受压本构关系.
Abstract:
The stress-strain relationship experiments of different concrete under uniaxial compression were studied. The results of stress-strain experiments were analyzed by the method of Chi-square testing that the probability distribution of damage variable and related parameters were determined. The introduction of damage threshold based on the traditional Weibull random distribution of two parameters, and the range of damage threshold was discussed. Meanwhile, the influence of plastic strain on the constitutive model was discussed, and the meso stochastic damage constitutive model of fiber concrete under compression were established according to the phenol- menological microscopic statistical damage mechanics and thermodynamic theory. Results showed that the damage variable obeyed Weibull distribution, and the damage threshold of fiber concrete was greater than ordinary concrete. The given model of this paper helped describe the stress-strain curve of fiber concrete under uniaxial compression.

参考文献/References:

[1].DONG Yuli, FAN Chengmou, PAN Jinglong. Study on a constitutive model of SFRC[J]. Harbin University of Civil Engineering and Architecture, 1993, 26(2):86-92.
[2].宋玉普, 赵国藩. 钢纤维混凝土内时损伤本构模型[J].水利学报, 1995, 26(6): 1-7.
[3].SONG Yupu, ZHAO Guofan. Endochronic damage constitutive model for steel fiber reinforced concrete[J]. Journal of Hydraulic Engineering. 1995, 26(6): 1-7.
[4].王春来, 徐必根, 李庶林, 等. 单轴受压条件下钢纤维混凝土损伤本构模型研究[J].岩土力学, 2006, 27(1): 151-154.
[5].WANG Chunlai, XU Bigen, LI Shulin, et al. Study on a constitutive model of damage of SFRC under uniaxial compression[J]. Rock and Soil Mechanics, 2006, 27(1): 151-154.
[6].宁建国. 混凝土材料动态性能的经验公式、强度理论与唯象本构模型[J].力学进展,2006,36(3):389-405.
[7].NING Jianguo. The developments of dynamice constitutive behavior of concrete[J] Advances in Mech anics,2006,36(3):389-405.
[8].姜小春, 谢和平, 周宏伟. 拉伸载荷下准脆性材料微裂纹损伤宏细观损伤变量关系初探[J]. 岩石力学与工程学报,2007,26(增1):2648-2653.
[9].JING Xiaochun, XIE Hepin, ZHOU Hongwei. Analysis of relationship between macro- scopic damage and mesoscopic damage variables for micro-crack damage of quasi-brittle materials under tension[J]Chinese Journal of Rock Mechanics and Engineering, 2007, 26(supp1): 2648-2653.
[10].冯西桥, 余寿文. 准脆性材料细观损伤力学[M]. 北京:高等教育出版社,2002.
[11].FENG Xiqiao, YU Shouwen. Mesoscopic damage mechanics of quasi-brittle materials [M].Beijin:China Higher Education Press,2002.
[12].李兆霞. 损伤力学及其应用[M]. 北京:科学出版社, 2002.
[13].LI Zhaoxia. Damage mechanics's application[M]. Beijing: Science Press,2002.
[14].余寿文, 冯西桥. 损伤力学[M]. 北京:清华大学出版社,1999.
[15].YU Shouwen, FENG Xiqiao. Damage mechanics[M]. Beijing:Tsinghua University Press, 1999.
[16].李朝红, 王海龙, 徐光兴. 混凝土损伤断裂的三位细观数值模拟[J].中南大学学报:自然科学版,2011,42(2):463-469.
[17].LI Chaohong, WANG Hailong, XU Guangxing. 3-D mesoscopic numerical simulation of concrete damage and fracture[J].Journal of Central South University: Science and Technology,2011, 42(2):463-469.
[18].YIP W K , KONG F K , CHAN K S , LIM M K . A statistical model of microcracking of concrete under uniaxial compression [J]. Theoretical and Applied Fracture Mechanics, 1995, 22(1): 17-27.
[19].DENG Jian, GU Desheng. On a statistical damage constitutive model for rock materials [J]. Computers and Geosciences, 2011, 37: 122-128.
[20].WONG Tengfong, ROBINA H C , WONG K T, et al. Microcrak statistics, Weibull distribu- tion and micromechanical modeling of compressive failure in rock [J]. Mechanics of Materials, 2006, 38: 664-681.
[21].KRAJCINOVIC D, SILVA M A G. Statistical aspects of the continuous damage theory. [J]. International Journal of Solids Structure, 1982, 18(7): 551-562.
[22].范镜泓. 非线性连续介质力学基础[M]. 重庆: 重庆大学出版社, 1987.
[23].FAN Jinghong. Non-linear continuum mechanics[M]. Chongqin:Chongqing Universtiy Press,1987.
[24].谷耀新. 三参数威布尔分布参数估计方法[J]. 沈阳工业学院学报. 1997, 16(4): 53-56.
[25].GU Yaoxin. Parameter estimation methods for 3- parame
[26].ter weibull distribution[J].Journal of Shenyang University of Technology, 1997, 16(4): 53-56.
[27].[16] 吴建营. 基于损伤能释放率的混凝土弹塑性损伤本构模型及其在结构非线性分析中的应用[D]. 上海:上海同济大学, 2004.
[28]. WU Jianying. The application of the elastoplastic damagemodel based on damage energy release rate in nonlinear analysis of concrete structures[D].Shanghai: Tongji University, 2004.

备注/Memo

备注/Memo:
收稿日期:2015-01-30 修改稿日期:2015-10-10
基金项目:国家自然科学基金(51278403); 教育部创新团队(IRT13089) ——————————————— 收稿日期:2015-01-30 修改稿日期:2015-10-10
作者简介:关 虓(1984-),男,博士生,主要从事研究E-mail: 86484869@qq.com682 西 安 建 筑 科 技 大 学 学 报(自然科学版) 第47卷
更新日期/Last Update: 2015-12-14