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

Abstract:

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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.

Info:

Periodical:

Advanced Materials Research (Volumes 250-253)

Edited by:

Guangfan Li, Yong Huang and Chaohe Chen

Pages:

2506-2509

DOI:

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

Citation:

Z. F. Lu and M. Y. Liu, "Shrinkage and Creep Analysis of a Continuous Rigid-Frame Bridge with Density Gradient Concrete", Advanced Materials Research, Vols. 250-253, pp. 2506-2509, 2011

Online since:

May 2011

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Price:

$35.00

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