Abstract
Presenting the basic assessment principle of structural integrity first, this paper describes the current structural integrity assessment methodologies with great emphasis on the deterministic and probabilistic R6. By comparison between the two kinds of structural integrity assessment, the following conclusions were obtained: When using deterministic assessment methods, the safety requirement aspect of structural integrity can be guaranteed in most cases but with certain possibilities of loss in structural functionality. Although having its own problems, the probabilistic assessment method can generally provide a more accurate description of structural integrity status, which leads to full utilization of existing structures especially those containing defects. The other obvious advantage of the probabilistic assessment method is its ability to recognize the most effective measures for structural intergrity improvement. As a new trend, the combination of both deterministic and probabilistic assessment methodologies will yield more beneficial results.
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