|本期目录/Table of Contents|

[1]金伟良,徐波,王海龙.混凝土材料的细观结构数值模拟与性能分析[J].建筑科学与工程学报,2008,25(04):19-22.
　JIN Wei-liang,XU Bo,WANG Hai-long.Numerical Simulation and Performance Analysis of Concrete Based on Material Mesostructures[J].Journal of Architecture and Civil Engineering,2008,25(04):19-22.
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混凝土材料的细观结构数值模拟与性能分析(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
25卷
期数:
2008年04期
页码:
19-22
栏目:
出版日期:
2008-12-20

文章信息/Info

Title:
Numerical Simulation and Performance Analysis of Concrete Based on Material Mesostructures
作者:
金伟良，徐波，王海龙
浙江大学结构工程研究所,浙江杭州310027
Author(s):
JIN Wei-liang, XU Bo, WANG Hai-long
Institute of Structural Engineering, Zhejiang University,Hangzhou 310027, Zhejiang, China
关键词:
混凝土;  细观结构;  数值模拟;  界面;  性能分析;  稳态氯离子扩散系数
Keywords:
concrete;  mesostructure;  numerical simulation;  interface;  performance analysis;  steady chloride diffusion coefficient
分类号:
TU528.041
DOI:
-
文献标志码:
A
摘要:
在细观上将混凝土看作是由粗骨料、水泥砂浆和界面三相介质组成的复合材料,根据体视学原理并应用蒙特卡洛方法模拟出混凝土的二维圆形骨料分布; 应用理论公式计算出界面厚度,并将界面看作是包围在骨料外面的一层圆环,在细观上模拟生成混凝土的三相组成; 基于骨料随机模型,应用有限单元法提出了混凝土稳态氯离子扩散系数的计算方法并与试验结果进行了对比。结果表明,该模型用于计算混凝土稳定氯离子扩散系数是有效的。
Abstract:
Based on the random aggregate model, a finite element method was employed to calculate the steady chloride diffusion coefficient. In the mesolevel, concrete was considered as a three-phase composite material, consisting of aggregate, cement matrix and interfacial transition zone(ITZ). The circle aggregate distribution of meso concrete in two dimensions was simulated on basis of stereological theory and Monte Carlo method. The ITZ was simulated as a ring outside the aggregate after its thickness being calculated. By these methods, the three-phase numerical model of concrete was established. Comparisons between numerical and experimental results were carried out. The results show that the model is effective to calulate the steady chloride diffusion coefficient of concrete.

参考文献/References:

[1] 王宝庭.基于刚体-弹簧元法的全级配混凝土本构行为模拟[D].大连:大连理工大学,1997. WANG Bao-ting.Simulation of Fully-graded Aggregate Concrete Constitutive Behavior Based on Rigid Body Spring Model[D].Dalian:Dalian University of Technology,1997.
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[7]姜 璐.界面结构特性及混凝土弹性模量预测[D].杭州:浙江工业大学,2005. JIANG Lu.Structural Characteristics of ITZ and Prediction of Elastic Modulus of Concrete[D].Hangzhou:Zhejiang University of Technology,2005.
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备注/Memo

备注/Memo:
收稿日期:2008-10-09
基金项目:国家自然科学基金项目(50538070); 国家自然科学基金项目(50809061); 浙江省自然科学基金项目(Y107389)
作者简介:金伟良(1961-),男,浙江杭州人,教授,博士研究生导师,工学博士,E-mail:jinwl@zju.edu.cn。
更新日期/Last Update: 2008-12-20