氯盐侵蚀混凝土结构的精细化数值模拟研究  

Numerical Analysis of RC Structures Corroded by Chloride

作　　者：刘邦禹 蒋欢军[1] LIU Bangyu;JIANG Huanjun(Department of Disaster Mitigation for Structures,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学结构防灾减灾工程系,上海200092

出　　处：《结构工程师》2019年第5期47-53,共7页Structural Engineers

基　　金：自然科学基金项目(51978526)。

摘　　要：针对现有试验研究方法在氯盐侵蚀钢筋混凝土结构研究中存在的困难性,开展氯盐侵蚀混凝土结构的精细化数值模拟研究。通过收集与分析现有研究成果,改进了氯盐侵蚀混凝土结构中钢筋与混凝土材料的强度退化模型、钢筋与混凝土之间的粘结-滑移关系退化模型以及纵筋与箍筋锈蚀的对应关系模型,并以收集的21个氯盐侵蚀混凝土梁、柱构件为基础,运用大型有限元软件ABAQUS验证了该精细化数值模拟方法的准确性与可靠性。Considering difficulty of the existing experimental research methods for RC structures corroded by chloride,the refined numerical simulation method was developed in this study.The strength degradation models for the steel and concrete,the deterioration model of bond-slip relationship between the steel and concrete,and the relationship between the stirrup corrosion and longitudinal corrosion were optimized by collecting and analyzing existing research results.With the aid of the finite element software ABAQUS,the accuracy and reliability of the numerical simulation method was verified through the analysis of 21 groups of RC structure members corroded by chloride.

关 键 词：混凝土结构 氯盐侵蚀 数值模拟 ABAQUS 受力性能 

分 类 号：TU7[建筑科学—建筑技术科学]