Abstract
This paper presents a method of probabilistic analysis and a sensitivity analysis of the effects of creep and shrinkage in prestressed concrete (PSC) box girder bridges. Three possible sources of the uncertainties of the structural response have been considered: (1) creep and shrinkage model uncertainty, (2) parameter variation, and (3) environmental conditions. The probabilistic and sensitivity analyses are performed using sampling method. For each sample, a time-dependent structural analysis is performed to produce response data, which are then analyzed statistically. Two measures are examined to quantify the sensitivity of the outputs to each of the input variables. These are partial rank correlation coefficient (PRCC) ad standardized rank regression coefficient (SRRC) computed on the ranks of the observations. To apply the proposed method to a real structure, the probabilistic prediction and sensitivity of the time-dependent axial shortening of PSC box girder bridge are analyzed. The method provides a realistic tool to determine the uncertainty analysis in PSC box girder bridges and identifies the most important factors in the long-term prediction of structural response of those structures.
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The manuscript for this paper was submitted for review on May 23, 2002.
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Yang, IH. Probabilistic analysis of creep and shrinkage effects in PSC box girder bridges. KSCE J Civ Eng 7, 275–284 (2003). https://doi.org/10.1007/BF02831778
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DOI: https://doi.org/10.1007/BF02831778