Law of Stiffness Degradation of the PC Box-Girder Bridges with Web Cracking

Hai Dong Huang; Zhong Fu Xiang; Rui Sheng Feng

doi:10.4028/www.scientific.net/AMR.255-260.1236

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 255-260Law of Stiffness Degradation of the PC Box-Girder...

Law of Stiffness Degradation of the PC Box-Girder Bridges with Web Cracking

Abstract:

The webs of Continuous Rigid Frame Bridge suffer from cracking generally. In this paper, the mechanical characteristics of the box girder with cracked webs were studied. With reference of ChongQing JiangJin bridge, the 3-D solid FEM that employed with the smeared crack model was used to analysis the crack distribution. The law of reduced local stiffness and global stiffness on box girder with cracked sections was studied. At the same time, A sensitive analysis was performed to assess the effects of the effective prestress and reinforcement ratio on the cracking resistance and the reduced stiffness.

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Periodical:

Advanced Materials Research (Volumes 255-260)

Pages:

1236-1239

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.255-260.1236

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Online since:

May 2011

Authors:

Hai Dong Huang, Zhong Fu Xiang, Rui Sheng Feng

Keywords:

Bridge Engineering, Inclined Cracks on the Webs, Reduced Stiffness, Smeared Crack Model

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References

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