期刊名称：International Journal of Computer Trends and Technology
电子版ISSN：2231-2803
出版年度：2013
卷号：4
期号：5-5
出版社：Seventh Sense Research Group
摘要：—Based on the influence of flexural crack on the chloride ion erosion of concrete beams, an equivalent chloride diffusion model is built, which is verified by dryingwetting cycles and cracking load coupling test. Considering effects of crack, ash and time, the advanced calculation model of equivalent diffusion coefficient of chloride ions is achieved. The service life of concrete structures is predicted on basis of the Monte Carlo method, regarding steel corrosion starting as durability limit state of concrete structures. Failure probability of different cracked concrete structures under chloride salt dryingwetting cycles are analyzed, and based on the influence of steel corrosion starting under different concrete cover thickness and the ratio of concrete, the durability life prediction is obtained, which could provide certain reference for service life assessment of actual projects.
关键词：flexural cracked; chloride ion erosion; equivalent chloride diffusion coefficient; drying-wetting cycles; durability service life prediction
