混凝土结构耐久性设计方法与寿命预测研究进展

Research progress on the durability design and life prediction of concrete structures

由混凝土结构耐久性定义入手,首先评述现有的混凝土结构耐久性设计方法,提出耐久性设计的发展应结合结构全生命周期成本(SLCC)的理念;其次总结了结构耐久性的评估和寿命预测方法的研究现状,认为耐久性的评估与寿命预测需要研究确立反映结构使用寿命的耐久性指标,并建立基于动态评估方法的寿命评估体系;最后提出上述方面发展领域尚待解决的一些基本问题,包括:界定给定环境和使用要求下的混凝土结构耐久性失效极限状态;确定表征材料与结构耐久特征的指标与参数;建立耐久性动态检测数据分析理论等。

This paper starts with the definition of concrete-structural durability. Then it presents that durability design method should be combined with the theory of Structural Life-Cycle Cost（SLCC） based on the survey of the recent durability design theories. Moreover, the current situation of evaluation and life prediction of durable concrete structures are summarized, which makes it necessary to determine a durability index reflecting service life and a dynamic life-assessment system. Last, several basic problems in this domain are brought forth, including definition of durability limit state for concrete structures under given environmental condition and usage requirement, determination of indexes and parameters representing the durability characters of materials as well as structures and establishment of theory for analysis of durability dynamic detection data.