Field Test and Numerical Simulation of Cracks in the Box Girder of Long-Span RPC Bridges

Abstract:

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Cracks that occurred in the top slab of a cantilever construction bridge were investigated through field test, which revealed that the cracks were caused by excessive prestress layout and too small curvature radius of tendons. The excessive prestress layout can reduce the forced area of cross-section. Too small curvature radius of tendons may cause the concrete in the flat curve of tendons to withstand great radial component of forces. And, excessive prestressed ducts will in a certain extent affect the quality of concrete between the ducts. In addition, a finite element analysis was performed to evaluate the effects of the tendons. Based on the results, a construction method that prevents the cracks is proposed.

Info:

Periodical:

Advanced Materials Research (Volumes 383-390)

Edited by:

Wu Fan

Pages:

5592-5597

DOI:

10.4028/www.scientific.net/AMR.383-390.5592

Citation:

J. M. Zhang "Field Test and Numerical Simulation of Cracks in the Box Girder of Long-Span RPC Bridges", Advanced Materials Research, Vols. 383-390, pp. 5592-5597, 2012

Online since:

November 2011

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$35.00

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