A Method to Determine the Warning Value of the Opening of Concrete Dam Crack Based on the Analysis of Time-Effect and the Low Probability Method

Abstract:

During the long-term operation of concrete dam, the cracks in concrete dam might have propagated. Aiming at this situation, based on the comprehensively consideration of the evolution and abnormality situation of concrete dam crack, a method to determine the warning value of the opening of concrete dam crack was proposed. First, the time-effect of crack opening was extracted and its variation law was analyzed, according to this, the occurring time of the unstable propagation of crack was determined. Then, the warning value of crack opening after the last propagation of crack was determined by use of the low probability method. Apply this method to analyze the measured data of a concrete dam crack; the warning value of crack opening was determined successfully; this shows that this method has certain application value.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 1871-1876
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.1871
• Online since: November 2012
• Authors: Ji Jing
• Keywords: Concrete Dam, Crack Opening, Warning Value

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