Discussion of 'Updating the reliability of a concrete bridge structure based on condition assessment with uncertainties' by S.S. Law and J. Li @@[Eng Struct 32 (2010)286-296]

摘要

Reliability evaluation based on damage/condition assessment and structural health monitoring data has recently received increasing attention. The paper by the authors reports the work that uses the condition assessment results with uncertainties to update the component and system reliabilities of a concrete bridge structure. A damage assessment technique considering the uncertainties both in model and in measurement data is first applied to obtain the existing condition of a structure from time-domain data, and then the component and system reliabilities, in forms of reliability index, are updated with the damage assessment results. The discusser's main concerns are as follows.