氯盐侵蚀下钢筋混凝土结构寿命的预测研究进展  

Research Progress on Service Life Prediction of Reinforced Concrete Structures under Chloride Attack

作　　者：张菊辉[1] 方成 ZHANG Juhui;FANG Cheng(School of Environment and Architecture,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学环境与建筑学院

出　　处：《材料科学与工程学报》2019年第5期848-854,859,共8页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(51408359)

摘　　要：本研究基于可靠度分析理论,从结构使用寿命的定义、结构寿命预测分析方法以及表征混凝土结构耐久能力的参数三个方面,对氯盐侵蚀下的钢筋混凝土结构寿命预测进行归纳总结,针对当前研究中存在的问题提出建议。重点突出耐久性参数在混凝土结构的耐久性设计和寿命预测中的重要作用,相应的结构耐久性健康监测及其检测理论和方法还需完善,混凝土结构在裂缝存在下的寿命预测研究尚未成熟,裂缝的影响特性还需进一步明确。Chloride-induced corrosion of reinforcement is identified as the main cause of deterioration of reinforced concrete(RC) structures. Based on the theory of reliability analysis, this paper summarizes the service life prediction of RC structures under chloride attack from three aspects: the definition of structural service life, methods of structure life prediction, and the parameters that characterize the durability of RC structures. Suggestions were put forward to provide a guide for the further research. It is pointed out that the durability parameters play an important role in the durability design and life prediction of RC structures, and further researches should focus on the development of the theories and methods of the structural health monitoring. It is not mature for the studies about the service life prediction of RC structures with cracks under chloride attack, and the influence of the cracks on chloride diffusion need to be further clarified.

关 键 词：氯离子 可靠度分析 寿命预测 钢筋混凝土 

分 类 号：TU528.1[建筑科学—建筑技术科学]