（1 中国十七冶集团有限公司技术中心，马鞍山 243000；2 安徽工业大学 建筑工程学院，马鞍山 243032）

[摘要]  论文以保护层混凝土从碳化透彻到锈胀开裂过程中的RC构件为研究对象，通过分析常用单元族的力学特性并结合现有研究成果，认为三维实体线性减缩单元C3D8R和两结点三维单元T3D2能很好地模拟混凝土材料、内嵌钢筋的力学行为，指出了指数衰减摩擦模型在处理锈蚀钢筋与混凝土间接触问题上的优势，将Hsich-Ting-Chen四参数强度准则作为混凝土材料的破坏准则，给出了锈蚀钢筋、混凝土及材料间粘结滑移的本构模型。基于多龄期RC构件抗震性能试验研究结果，对论文提出的基于ABAQUS软件平台的适用于轻度锈蚀RC构件数值建模理论进行可靠性验证，并取得了理想的验证效果，为后续对相关科学问题的研究提供了一种可行、有效的研究手段。

[关键词]  在役RC构件；ABAQUS软件；数值建模理论；指数衰减摩擦模型；本构模型

中图分类号：TU317⁺.1,TU375          文献标识码：A             文章编号：

The theory of numerical model for light corroded RC components

Yu Huachun¹, Tao Qinglin², Hu Yi¹

(1 Technology Center, China MCC17 group Co., Ltd., Maanshan 243000, China;2 School of Civil & Architecture Engineering, Anhui University of Technology, Maanshan 243032, China)

Abstract: Taking RC components whose covered concrete evolved from fully carbonization to corrosion cracking as research object, the unit C3D8R and unit T3D2 are chosen to simulate the mechanic behavior of concrete and reinforcement according to the analysis of common elements mechanic property and existing achievements, and the superiority of exponential damping friction model on handling with the problem of contact between corrosion reinforcement and concrete is obviously exhibited, then the Hsich-Ting-Chen strength criterion is taken as concrete failure criterion and material constitutive models of corrosion reinforcement, concrete and bond-slip are provided. Based on the seismic performance experiment results of mult-age RC component, numerical model theory for light corroded RC component which has mentioned above is proved to be reliable, and the achievements can provide a feasible and effective method for solving correlated problem in subsequent study.

Keywords: existing RC component; ABAQUS program; numerical model theory; exponential damping friction model; constitutive model

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