摘要
混凝土结构耐久性受多种因素影响,不同因素具有不同的敏感度,将影响因子按照敏感度高低划分,有重点的进行考虑,有助混凝土耐久性设计。传统的影响因子敏感度分析方法,由于需要大量样本作为支持,具有一定的局限性。本文引入灰色关联理论,对构件耐久性寿命预测模型的影响因素进行敏感性计算,并与传统计算方法进行比较。结果表明,灰色关联理论能够对影响因素的敏感等级进行量化,并具较高的置信度,为混凝土耐久性研究提供了一种新的方法和手段。
Concrete durabihty is affected by a number of factors which have different sensitivity. According to level of sensitivity classified the influence factors could promote concrete durability design. The disadvantage of traditional methods of sensitivity analysis in concrete durability is the larger number of samples. This paper introduces gray correlation theory to analyze degree of the sensitivity of the influence factors and comparison with traditional methods of calculation. The results show that the gray correlation analysis method could quantify the levels of the sensitive factors and with higher reliability. A new way to study the durability of concrete was provided.
出处
《四川建筑科学研究》
北大核心
2009年第4期75-80,共6页
Sichuan Building Science
基金
上海师范大学科研基金项目(SK200873)
关键词
混凝土结构
耐久性
影响因子
灰色关联分析
concrete structure
durability
affected factors
grey correlation analysis
