（1 金陵科技学院建筑工程学院, 南京 211169; 2 河海大学土木与交通学院, 南京 210098）

［摘要］目前通用有限元软件所采用的开裂迭代策略往往无法精确、高效模拟混凝土结构开裂过程。在分析研究现有混凝土开裂准则、裂缝模型以及开裂迭代策略的基础上，提出基于“优先开裂”准则的混凝土结构开裂迭代策略，并将其用于混凝土简支梁开裂仿真分析。分析结果表明：该开裂迭代策略无需重新划分网格、可连续自动根据开裂积分点顺序精确模拟裂缝产生、扩展全过程，其计算结果与混凝土结构实际开裂情况较为吻合。

［关键词］混凝土; 开裂迭代策略; “优先开裂”准则

中图分类号：TU375文献标识码：A文章编号：1002-848X(2016)15-0085-06

Whole process analysis of cracking development of three-dimensional concrete structure based on principle of “preferential cracking”

Wang Panxiu1,2， Zhao Haitao2， Xuan Weihong1， Chen Yuzhi1

(1 Architectural Engineering Institute, Jinling Institute of Technology, Nanjing 211169, China;2 College of Civil and Transportant Engineering, Hohai University, Nanjing 210098, China)

Abstract:At present, the cracking iterative strategy adopted by general finite element software is often unable to accurately and efficiently simulate the cracking process of concrete structures. Based on the analyses of the existing concrete cracking criterion, crack model and cracking iterative strategy, cracking iteration strategy of concrete structure based on “preferential cracking” criteria was proposed and was used for the simulation analysis of simply supported concrete beam cracking. Analysis results show that the cracking iteration strategy does not need remeshing and can accurately simulate cracking generation and expansion process according to the cracking points order continuously and automatically. The calculated results are consistent with the actual cracking condition of the concrete structure.

Keywords:concrete; cracking iteration strategy; principle of “preferential cracking”

 *江苏省住房和城乡建设厅基金(K42011361),金陵科技学院科研基金(2014-jit-n-04)。

作者简介：王潘绣，博士，讲师，Email:Wangpanxiu@jit.edu.cn。