Numerical Analysis of Creep and Longitudinal Cracks Effection on PC Bridge Deflection

Abstract:

This paper presents a three-dimensional entity model to analyze the creep effection of PC continuous rigid frame bridge and simulate the impact of longitudinal cracks at the bottom of mian span on the deflection briefly with ANSYS software. The result shows that creep amplifies the deflection of bridge and makes the position of maximum deflection move to the center of mian span. And the longitudinal cracks of mian span don’t make great contribution to the deflection of PC continuous rigid frame bridge directly. Actually, the cracks change the stress state of the bridge’s section, which results in the risk of web cracking and further the stiffness degradation of structure. The stiffness degradation increases the defection of bridge to a great degree finally.

• Periodical: Applied Mechanics and Materials (Volumes 638-640)
• Pages: 969-972
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.638-640.969
• Online since: September 2014
• Authors: Xun Wu*, Jie Li, Xian Shui Yi, Zhi Chao Zhang
• Keywords: ANSYS Software, Creep Effect, Deflection, Longitudinal Crack, Structural Stiffness

References

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