|Table of Contents|

Mesoscopic Numerical Model of Concrete Based on Data Base of Real Aggregate Shapes(PDF)

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

Issue:
2010年02期
Page:
10-17
Research Field:
Publishing date:
2010-06-20

Info

Title:
Mesoscopic Numerical Model of Concrete Based on Data Base of Real Aggregate Shapes
Author(s):
FU Bing1;  LI Jian-bo1; 2;  LIN Gao1; 2;  CHEN Jian-yun1; 2
1. Earthquake Engineering Research Division, Dalian Universityof Technology, Dalian 116024, Liaoning, China; 2. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
Keywords:
concrete;  mesoscopic numerical simulation;  random aggregate model;  aggregate shape;  finite element mesh division
PACS:
TU528
DOI:
-
Abstract:
Aimed at the problems of the shapes of numerical simulation aggregates not matching the real aggregates, and the random aggregate invasion judgement being difficult, a modified method for generating the numerical aggregates based on the data base of real aggregate shapes was proposed. Invasion judgement was carried out for random aggregates by using dual criterion rule, and the finite element method of the mesoscopic mesh division generation at two-stages was developed for concrete specimens. The method was verified by using mesoscopic numerical pretreatment software of concrete mechanical performance. The results show that the mesoscopic numerical model is more approach to the real concrete specimens, and the effect of external auxiliary geometry of aggregates on the aggregate rate is eliminated, and the rectangular elements can be used to mesh division of materials of concrete mesoscopic numerical model as possible.

References:

[1] 白卫峰.混凝土损伤机理及饱和混凝土力学性能研究[D].大连:大连理工大学,2008. BAI Wei-feng.Study on Damage Mechanism of Concrete and Mechanical Property of Saturated Concrete[D].Dalian:Dalian University of Technology,2008.
[2]唐春安,朱万成.混凝土损伤与断裂——数值实验[M].北京:科学出版社,2003. TANG Chun-an,ZHU Wan-cheng.Damage and Fracture of Concrete:Numerical Test[M].Beijing:Science Press,2003.
[3]张楚汉.论岩石、混凝土离散-接触-断裂分析[J].岩石力学与工程学报,2008,27(2):217-235. ZHANG Chu-han.Discrete-contact-fracture Analysis of Rock and Concrete[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(2):217-235.
[4]BAZANT Z P,TABBARA M R,KAZEMI M T,et al.Random Particle Models for Fracture of Aggregate or Fiber Composites[J].Journal of Engineering Mechanics,1990,116(8):1686-1705.
[5]SCHALANGEN E,VANMIER J G M.Simple Lattice Model for Numerical Simulation of Fracture of Concrete Materials and Structures[J].Materials and Structures,1992,25(9):534-542.
[6]高政国,刘光廷.二维混凝土随机骨料模型研究[J].清华大学学报:自然科学版,2003,43(5):710-714. GAO Zheng-guo,LIU Guang-ting.Two-dimensional Random Aggregate Structure for Concrete[J].Journal of Tsinghua University:Science and Technology,2003,43(5):710-714.
[7]李运成,马怀发,陈厚群,等.混凝土随机凸多面体骨料模型生成及细观有限元剖分[J].水利学报,2006,37(5):588-592. LI Yun-cheng,MA Huai-fa,CHEN Hou-qun,et al.Approach to Generation of Random Convex Polyhedral Aggregate Model and Plotting for Concrete Meso-mechanics[J].Journal of Hydraulic Engineering,2006,37(5):588-592.
[8] 唐欣薇,张楚汉.基于改进随机骨料模型的混凝土细观断裂模拟[J].清华大学学报:自然科学版,2008,48(3):348-351,356. TANG Xin-wei,ZHANG Chu-han.Simulation of Meso-fracture for Concrete Based on the Developed Random Aggregate Model[J].Journal of Tsinghua University:Science and Technology,2008,48(3):348-351,356.
[9]王宗敏,邱志章.混凝土细观随机骨料结构与有限元网格剖分[J].计算力学学报,2005,22(6):728-732. WANG Zong-min,QIU Zhi-zhang.Random Aggregate Structure of Mesoscopic Concrete and Finite Element Mesh[J].Chinese Journal of Computational Mechanics,2005,22(6):728-732.
[10]李建波,林 皋,陈健云.随机凹凸型骨料在混凝土细观数值模型中配置算法研究[J].大连理工大学学报,2008,48(6):869-874. LI Jian-bo,LIN Gao,CHEN Jian-yun.Numerical Generation and EfficientDistribution for Random Shape Aggregates in Mesoscopic Concrete Model[J].Journal of Dalian University of Technology,2008,48(6):869-874.
[11]WANG Z M,KWAN A K H,CHAN H C.Mesoscopic Study of Concrete I:Generation of Random Aggregate Structure and Finite Element Mesh[J].Com-puters and Structures,1999,70(5):533-544.
[12]唐欣薇.基于宏细观力学的混凝土破损行为研究[D].北京:清华大学,2009. TANG Xin-wei.Study on Damage and Fracture Behavior of Concrete Based on Macro and Meso Mechanics[D].Beijing:Tsinghua University,2009.
[13]陈拴发,景蔚君,李鹏辉,等.配合比设计参数对高性能混凝土腐蚀疲劳强度的影响[J].西安科技大学学报,2005,25(3):301-305. CHEN Shuan-fa,JING Wei-jun,LI Peng-hui,et al.Influence of Design Parameters of Mixture Ratio on Corrosion Fatigue Strength of High Performance Concrete[J].Journal of Xi'an University of Science and Technology,2005,25(3):301-305.
[14]赵华玮,曾宪桃,刘彦宾.磁化水对喷射混凝土粉尘浓度及回弹率的影响[J].西安科技大学学报,2008,28(2):236-239. ZHAO Hua-wei,ZENG Xian-tao,LIU Yan-bin.Using Magnetized Water to Reduce Shotcrete Dust Density and the Rate of Rebound[J].Journal of Xi'an University of Science and Technology,2008,28(2):236-239.
[15]郑木莲,陈拴发,王秉纲.多孔混凝土排水基层路用性能研究[J].西安科技大学学报,2007,27(4):603-607. ZHENG Mu-lian,CHEN Shuan-fa,WANG Bing-gang.Physical and Mechanical Performance of Porous Concrete for Drainage Base[J].Journal of Xi'an Univer-sity of Science and Technology,2007,27(4):603-607.
[16]张琪玮,尹征南,张 涛.基于双剪强度理论的改进型混凝土强度准则[J].西安建筑科技大学学报:自然科学版,2008,40(2):207-212. ZHANG Qi-wei,YIN Zheng-nan,ZHANG Tao.An Improved Failure Criterion for the Concrete Based on Unified Twin Shear Strength Theory[J].Journal of Xi'an University of Architecture & Technology:Natural Science Edition,2008,40(2):207-212.
[17]牛荻涛,陈立亭,张成中.混凝土中气体扩散系数的计算模型[J].西安建筑科技大学学报:自然科学版,2007,39(6):741-745. NIU Di-tao,CHEN Li-ting,ZHANG Cheng-zhong.Calculating Model for Gas Diffusivity in Concrete[J].Journal of Xi'an University of Architecture & Technology:Natural Science Edition,2007,39(6):741-745.
[18]熊剑平,申爱琴.聚合物水泥混凝土施工控制因素[J].交通运输工程学报,2008,8(1):42-46. XIONG Jian-ping,SHEN Ai-qin.Controlling Factors of Construction on Polymer Cement Concrete[J].Journal of Traffic and Transportation Engineering,2008,8(1):42-46.
[19]袁春毅,申爱琴,韩继国,等.磨细矿渣高性能路面混凝土的耐久性[J].中国公路学报,2007,20(5):24-29. YUAN Chun-yi,SHEN Ai-qin,HAN Ji-guo,et al.Durability of High Performance Pavement Concrete with Fine Slag[J].China Journal of Highway and Transport,2007,20(5):24-29.
[20]丁发兴,余志武,欧进萍.混凝土单轴受力损伤本构模型[J].长安大学学报:自然科学版,2008,28(4):70-73. DING Fa-xing,YU Zhi-wu,OU Jin-ping.Damage Constitutive Model for Concrete Under Uniaxial Stress Conditions[J].Journal of Chang'an University:Natural Science Edition,2008,28(4):70-73.
[21]沙爱民,陈开圣,马 峰.黄土室内振动压实特性试验[J].长安大学学报:自然科学版,2008,28(4):1-6. SHA Ai-min,CHEN Kai-sheng,MA Feng.Indoor Test on Physical-mechanical Properties of Loess Under Vibration Compaction[J].Journal of Chang'an University:Natural Science Edition,2008,28(4):1-6.
[22]锁利军,王秉纲,陈拴发,等.接缝设传力杆水泥混凝土面层结构力学分析[J].长安大学学报:自然科学版,2008,28(3):30-35. SUO Li-jun,WANG Bing-gang,CHEN Shuan-fa,et al.Numerical Analysis of Mechanics of Concrete Overlay in Transverse Joint with Dowel Bars[J].Journal of Chang'an University:Natural Science Edition,2008,28(3):30-35.
[23]周培德.计算几何——算法设计与分析[M].2版.北京:清华大学出版社,2005. ZHOU Pei-de.Computional Geometry:Algorithm Design and Analysis[M].2nd ed.Beijing:Tsinghua University Press,2005.
[24]高 悦.混凝土损伤破坏过程的细观数值模拟[D].大连:大连理工大学,2008. GAO Yue.The Numerical Simulation of Mesoscopic Damage and Failure Process of Concrete[D].Dalian:Dalian University of Technology,2008.

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Last Update: 2010-06-20