Influence Analysis of Parameters Variation on Dynamic Characteristic for Concrete Filled Steel Tubulur Arch Bridge

Abstract:

The main bridge of Zhengzhou Yellow River 2nd bridge is a concrete filled steel tubulur (CFST) arch bridge. Choosing the main bridge as the research object, the finite element procedure ANSYS was used to establish the 3D finite element dynamic model. In order to analyze the influence of structural Parameters variation on dynamic characteristic,17 different conditions were considered in the calculation and analysis process. The results show that the CFST arch bridge is a flexible structure. The vertical rigidity of the bridge is stronger than the lateral rigidity CFST arch rib. The changes of the transverse brace style have little effect on the vertical rigidity, but have great impacts on the lateral rigidity of the CFST arch rib. It is sensitive on the first step vibration if the bracing tube damage. But the bracing tube damage has little effect on the vertical rigidity. The damages of suspenders and bridge deck slabs influence weakly on the vibration modes.

• Periodical: Applied Mechanics and Materials (Volumes 361-363)
• Pages: 1429-1432
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.361-363.1429
• Online since: August 2013
• Authors: Hao Sun, Xiao Gang Li, Shi Lin Liu
• Keywords: Bridge Engineering, Concrete Filled Steel Tubulur Arch Bridge, Dynamic Characteristic, Finite Element Method (FEM), Structural Parameter

References

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