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The Influence of Long Span CFST Arch Bridge Deck Under Seismic Load

Lou Wen-juan

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Abstract

A seismic response model of long-span concrete filled steel-tube(CFST) arch bridge is set up.Taking a bridge in zhejiang province of 308 m span CFST arch bridge as an example,the mode of vibration and the seismic response behavior is systematically studied by changing the stiffness and mass of the bridge deck.The results show that the effect of bridge deck must be included in the analysis of seismic response of arch bridge.The effect of mass and stiffness of the bridge deck is different.The forces in the springing of arch rib are relatively sensitive to the stiffness of bridge deck.

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What this paper is about

A seismic response model of long-span concrete filled steel-tube(CFST) arch bridge is set up.Taking a bridge in zhejiang province of 308 m span CFST arch bridge as an example,the mode of vibration and the seismic response behavior is systematically studied by changing the stiffness and mass of the bridge deck.The results show that the effect of bridge deck must be included in the analysis of seismic response of arch bridge.The effect of mass and stiffness of the bridge deck is different.The forces in the springing of arch rib are relatively sensitive to the stiffness of bridge deck.

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Available abstract

A seismic response model of long-span concrete filled steel-tube(CFST) arch bridge is set up.Taking a bridge in zhejiang province of 308 m span CFST arch bridge as an example,the mode of vibration and the seismic response behavior is systematically studied by changing the stiffness and mass of the bridge deck.The results show that the effect of bridge deck must be included in the analysis of seismic response of arch bridge.The effect of mass and stiffness of the bridge deck is different.The forces in the springing of arch rib are relatively sensitive to the stiffness of bridge deck.

Key concepts: Structural engineering, Deck, Bridge (graph theory), Arch, Span (engineering), Stiffness, Engineering, Beam bridge

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