考虑地方气候时氯盐侵蚀混凝土结构寿命研究  

The initiation time for reinforced concrete members under chlorine salt erosion and climate

作　　者：焦俊婷[1] 叶英华[2] 杨荣华[1] 

机构地区：[1]厦门理工学院土木工程与建筑学院,福建厦门361021 [2]北京航空航天大学土木工程系,北京100083

出　　处：《中山大学学报（自然科学版）》2016年第1期85-90,共6页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目(51178020;51478404);福建省教育厅A类资助项目(JA14241)

摘　　要：针对在气候环境和氯盐侵蚀共同作用下沿海混凝土结构诱导期寿命进行研究。基于现有混凝土结构氯盐寿命模型,同时考虑气候环境温度、相对湿度影响,分析了我国东南沿海部分城市混凝土结构诱导期寿命;并利用简单可靠度理论计算我国东南沿海部分城市混凝土结构诱导期寿命的概率分布。研究结果表明:1地方气候相对湿度对诱导期寿命影响不容忽视;2对诱导期寿命影响较明显的因素有:相对湿度影响系数f(h)、氯离子扩散延迟系数m、氯离子参考扩散系数Dref和混凝土保护层厚度X。研究成果对混凝土结构加固、维护、剩余寿命预测具有参考作用。The initiation time for reinforced concrete （RC） members were researched along coast under chlorine salt erosion and climate. Based existing chlorine erosion life model, as temperature and relative humidity were considered, the initiation time for RC members were calculated. Then the probability distribution of the initiation time was given for RC members along coast in southeast china by using simpli- fied probability analysis. The results showed： ① The effect on initiation time from relative humidity should not be ignored;② The factors, such as relative humidity influence coefficient f（h）, chloride ion diffusion delay coefficient m, chloride ion diffusion reference coefficient Dref, and concrete cover thickness X, had more obvious influence on initiation time. This would be useful for structure strengthening, maintenance, and remaining life prediction.

关 键 词：氯盐侵蚀环境 混凝土结构 温度 相对湿度 诱导期寿命 

分 类 号：TU528.01[建筑科学—建筑技术科学]