Shrinkage and Creep Analysis of a Continuous Rigid-Frame Bridge with Density Gradient Concrete

Zhi Fang Lu; Mu Yu Liu

doi:10.4028/www.scientific.net/AMR.250-253.2506

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 250-253Shrinkage and Creep Analysis of a Continuous...

Shrinkage and Creep Analysis of a Continuous Rigid-Frame Bridge with Density Gradient Concrete

Abstract:

In consideration of the excessive mid-span deflection and box girder cracks of continuous rigid-frame bridges, this paper analyzes the maximum first principal stress and mid-span deflection increment of a continuous rigid-frame bridge with density gradient concrete under shrinkage and creep effect. The maximum first principal stress increment at main span is 0.084MPa and mid-span deflection increment is 73mm after 10 years for continuous rigid-frame bridge with density gradient concrete, which are smaller than a continuous rigid-frame bridge with normal concrete. All of that show that continuous rigid-frame bridge with density gradient concrete reduces effect of shrinkage and creep. The research provides a theoretical basis for the successful application of continuous rigid-frame bridge with density gradient concrete.

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Periodical:

Advanced Materials Research (Volumes 250-253)

Pages:

2506-2509

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.250-253.2506

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Online since:

May 2011

Authors:

Zhi Fang Lu, Mu Yu Liu

Keywords:

Continuous Rigid Frame Bridge, First Principal Stress, Mid-Span Deflection, Shrinkage and Creep

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