Deflection Control Method Study of Long-Span PC Continuous Rigid-Frame Highway Bridge Compared with Railway Bridge

Xun Wu; Jian Jun Yue; Xian Zheng Huang

doi:10.4028/www.scientific.net/AMM.638-640.933

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 638-640Deflection Control Method Study of Long-Span PC...

Deflection Control Method Study of Long-Span PC Continuous Rigid-Frame Highway Bridge Compared with Railway Bridge

Abstract:

Down-deflection of long-span prestressed concrete (PC) continuous rigid-frame bridges in highway is more serious than in railway. Deflection comparison of highway bridges and railway bridges can provide a reference for the deflection control of highway bridges. Differences of highway and railway design codes about deflection were firstly analyzed. Then, the whole construction processes of a highway bridge and a similar span railway bridge were simulated by Midas/Civil. Both the stress state and long-term deformation were compared. The results show that stress states of the railway bridge will reduce the down-deflection. Finally, for highway bridges, we propose the compressive stress at upper edge of pier-top section should be slightly larger than that at lower edge during the layout of prestressed tendons.

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Periodical:

Applied Mechanics and Materials (Volumes 638-640)

Pages:

933-936

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.638-640.933

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Online since:

September 2014

Authors:

Xun Wu*, Jian Jun Yue, Xian Zheng Huang

Keywords:

Creep Mode, Long-Term Deflection, PC Ridge-Frame Bridges, Stress State

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* - Corresponding Author

References

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