Research on Deflection and Cracking of Prestressed Concrete Continuous Girder Bridge

Fan Guo; Yong Qing Yang; Sheng Qian Huang

doi:10.4028/www.scientific.net/AMR.838-841.1014

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 838-841Research on Deflection and Cracking of Prestressed...

Research on Deflection and Cracking of Prestressed Concrete Continuous Girder Bridge

Abstract:

Through the checking comparison of example bridge, to analysis the major causes of the cracking and too much deflection for prestressed concrete continuous box girder bridge. Calculated weak position and the current presence of cracks in the bridge position basically consistent, so cracks mainly caused by the prestress loss, concrete creep and the temperature effect, the structure stiffness weakened after cracking, then the actual mid-span deflection is greater than the calculated values bound. Therefore, the cracking and too much deflection appear simultaneous and mutual promote. The view that by improving the mechanical behavior of box girders, design parameters optimization, just the fundamental solution to cracking and too much deflection, also, several key issues need study to be addressed.

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Periodical:

Advanced Materials Research (Volumes 838-841)

Pages:

1014-1017

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.838-841.1014

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Online since:

November 2013

Authors:

Fan Guo, Yong Qing Yang, Sheng Qian Huang

Keywords:

Causes and Prevention, Continuous Girder Bridge, Crack, Long Term Deflection, Prestressed Concrete

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References

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