|本期目录/Table of Contents|

[1]李苹,任晓丹,李 杰.基于隐式梯度理论的混凝土细观随机断裂模型[J].建筑科学与工程学报,2014,31(03):90-97.
 LI Ping,REN Xiao-dan,LI Jie.Meso Stochastic Fracture Model for Concrete Based on Implicit Gradient Theory[J].Journal of Architecture and Civil Engineering,2014,31(03):90-97.
点击复制

基于隐式梯度理论的混凝土细观随机断裂模型(PDF)
分享到:

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
31卷
期数:
2014年03期
页码:
90-97
栏目:
出版日期:
2014-09-30

文章信息/Info

Title:
Meso Stochastic Fracture Model for Concrete Based on Implicit Gradient Theory
作者:
李苹任晓丹李 杰
同济大学土木工程学院
Author(s):
LI Ping REN Xiao-dan LI Jie
School of Civil Engineering, Tongji University
关键词:
混凝土隐式梯度非局部化细观随机断裂模型
Keywords:
concrete implicit gradient nonlocalization meso stochastic fracture model
分类号:
-
DOI:
-
文献标志码:
A
摘要:
根据多尺度力学的基本思想,将隐式梯度非局部化理论与串并联弹簧模型理论相结合,建立了混凝土细观随机断裂模型。通过引入微弹簧断裂应变为服从对数正态分布的随机变量,验证了混凝土材料微观断裂的不可控制性;通过引入非局部化比例,解决了传统串并联弹簧模型的层数敏感性问题。对建立的模型从特征参数、局部应变与损伤的演化发展和层数敏感性几个方面进行了分析。最后,将模型结果与试验结果进行了对比,验证了该模型的正确性。研究结果表明:该模型计算效率高,且更加有利于在计算软件中实现。
Abstract:
Based on the basic concept of multiscale mechanics, authors combined the gradient nonlocal theory with seriesparallel spring model and developed a meso stochastic fracuture model for concrete. By introducing the fracture strain as a lognormal stochastic variable, uncontrollability of microfracture for concrete material was validated. Avoidance of layer sensitivity in traditional seriesparallel spring model was achieved with nonlocalization theory. Moreover, the authors analyzed the models from several aspects, such as the characteristic parameter, evolution of local strain and damage, as well as layer sensitivity. Finally, the analysis based on the model were compared with experimental data, to verify the correctness of the model. The study results show that the model has a high efficiency, and can be realized in computer software.

参考文献/References:

-

相似文献/References:

[1]单炜,张绍逸.BFRP筋与混凝土的粘结-滑移本构关系[J].建筑科学与工程学报,2013,30(02):15.
 SHAN Wei,ZHANG Shao-yi.[J].Journal of Architecture and Civil Engineering,2013,30(03):15.
[2]马志鸣,赵铁军,巴光忠,等.冻融环境下引气混凝土的抗钢筋锈蚀能力研究[J].建筑科学与工程学报,2014,31(03):85.
 MA Zhi-ming,ZHAO Tie-jun,BA Guang-zhong,et al.Study on Ability of Resistance to Steel Corrosion of Air Entraining Concrete Under Freezethaw Environment[J].Journal of Architecture and Civil Engineering,2014,31(03):85.
[3]翟 越,赵均海,艾晓芹,等.基于统一强度理论的巴西圆盘劈裂强度分析[J].建筑科学与工程学报,2015,32(03):46.
 ZHAI Yue,ZHAO Jun-hai,AI Xiao-qin,et al.Analysis on Splitting Strength of Brazilian Disc Based on Unified Strength Theory[J].Journal of Architecture and Civil Engineering,2015,32(03):46.
[4]王 钧,任靖豪,郭大鹏.短切玄武岩纤维混凝土基本力学性能的尺寸效应[J].建筑科学与工程学报,2015,32(05):96.
 WANG Jun,REN Jing-hao,GUO Da-peng.Size Effect of Basic Mechanical Properties of Chopped Basalt Fiber Reinforced Concrete[J].Journal of Architecture and Civil Engineering,2015,32(03):96.
[5]吴方伯,张 航,李 钧,等.不同箱体形式混凝土密肋空心楼盖受力性能试验[J].建筑科学与工程学报,2016,33(02):7.
 WU Fang-bo,ZHANG Hang,LI Jun,et al.Experiment on Mechanical Behavior of Concrete Hollow-ribbed Floor with Different Box[J].Journal of Architecture and Civil Engineering,2016,33(03):7.
[6]孙 昊,李继超,甘 丹.肋间距超限钢筋与混凝土间粘结强度试验[J].建筑科学与工程学报,2016,33(02):107.
 SUN Hao,LI Ji-chao,GAN Dan.Experiment on Bond Strength Between Steel and Concrete with Overrun Rib Spacing[J].Journal of Architecture and Civil Engineering,2016,33(03):107.
[7]乔宏霞,路承功,李 宇,等.宁夏盐渍土地区现场暴露混凝土耐久性损伤评价试验[J].建筑科学与工程学报,2016,33(06):44.
 QIAO Hong-xia,LU Cheng-gong,LI Yu,et al.Experiment on Durability Damage Assessment of Concrete Field Exposed in Saline Soil Area of Ningxia[J].Journal of Architecture and Civil Engineering,2016,33(03):44.
[8]肖 杰,屈文俊,朱 鹏.不同粗细骨料组合下的混凝土耐硫酸腐蚀研究[J].建筑科学与工程学报,2016,33(06):81.
 XIAO Jie,QU Wen-jun,ZHU Peng.Research on Concrete Sulfuric Acid Resistance with Different Types of Coarse and Fine Aggregates[J].Journal of Architecture and Civil Engineering,2016,33(03):81.
[9]刘汉昆,孙超,李杰.基于CT扫描的混凝土三维细观数值模拟[J].建筑科学与工程学报,2010,27(01):54.
 LIU Han-kun,SUN Chao,LI Jie.Three-demensional Mesoscopic Numerical Simulation of Concrete Based on CT Scan[J].Journal of Architecture and Civil Engineering,2010,27(03):54.
[10]付兵,李建波,林皋,等.基于真实骨料形状库的混凝土细观数值模型[J].建筑科学与工程学报,2010,27(02):10.
 FU Bing,LI Jian-bo,LIN Gao,et al.Mesoscopic Numerical Model of Concrete Based on Data Base of Real Aggregate Shapes[J].Journal of Architecture and Civil Engineering,2010,27(03):10.

备注/Memo

备注/Memo:
-
更新日期/Last Update: 2014-09-30