|本期目录/Table of Contents|

[1]林皋,李建波,赵娟,等.单轴拉压状态下混凝土破坏的细观数值演化分析[J].建筑科学与工程学报,2007,24(01):1-6.
　LIN Gao,LI Jian-bo,ZHAO Juan,et al.Mesoscopic Numerical Evolution Analysis of Concrete Damage Under Uniaxial Tension and Compression[J].Journal of Architecture and Civil Engineering,2007,24(01):1-6.
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
24卷
期数:
2007年01期
页码:
1-6
栏目:
出版日期:
2007-03-20

文章信息/Info

Title:
Mesoscopic Numerical Evolution Analysis of Concrete Damage Under Uniaxial Tension and Compression
作者:
林皋1,2,李建波1,赵娟1,梁正召1
1. 大连理工大学 工程抗震研究所,辽宁 大连 116024; 2. 大连理工大学 海岸与近海工程 国家重点实验室,辽宁 大连 116024
Author(s):
LIN Gao1,2, LI Jian-bo1, ZHAO Juan1, LIANG Zheng-zhao1
1. Earthquake Engineering Research Division, Dalian University of Technology, Dalian 116024, Liaoning, China; 2. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
关键词:
混凝土;  随机骨料模型;  损伤与破坏;  细观数值模拟;  单轴拉伸;  单轴压缩
Keywords:
concrete;  random aggregate model;  damage and fracture;  mesoscopic numerical simulation;  uniaxial tension;  uniaxial compression
分类号:
TU528.041
DOI:
-
文献标志码:
A
摘要:
在提出可同时满足级配曲线及指定骨料填充率的任意凹凸形骨料配置算法的基础上,建立了混凝土试件的细观随机骨料模型,并建立了空间应力环境下细观单元的弹性损伤本构关系; 分别就工程中常采用的两种不同的混凝土强度,研究了混凝土试件的细观损伤演化过程及细观单元力学参数取值对混凝土试件宏观表征强度的影响。数值算例验证了模型的有效性,并揭示出混凝土试件破坏主要是由细观单元的拉伸损伤积累所导致的。
Abstract:
An advanced method was presented to generate aggregates with random shapes and various sizes according to the given aggregate gradation curve and aggregate area fraction, and the elastic damage constitutive relations of mesoscopic elements were established in the three-dimension stress field. Numerical simulation tests were carried out to study the damage evolution on meso-level and the influences of parameters on macro-level strength of concrete specimen, in which two different kinds of concrete strengths were compared. The numerical results verify this mesoscopic model, and show that the failure of concrete is mostly due to the accumulation of tensile damage on mesoscopic level.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2007-01-28
基金项目:国家自然科学基金项目(90510018)
作者简介:林 皋(1929-),男,江西丰城人,教授,博士生导师,中国科学院院士,E-mail:gaolin@dlut.edu.cn。
更新日期/Last Update: 2007-03-20