The Effect of Inclined Arch Rib on the Dynamic Stability of Leaning-Type Arch Bridge under Earthquake

Yu Zhu Guo; Ai Rong Liu; Qi Cai Yu

doi:10.4028/www.scientific.net/AMR.461.579

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 461The Effect of Inclined Arch Rib on the Dynamic...

The Effect of Inclined Arch Rib on the Dynamic Stability of Leaning-Type Arch Bridge under Earthquake

Abstract:

Incorporating the Lyapunov theory of motion stability, the elastic dynamic stability program of a leaning-type arch bridge with 120m span is worked out via the modified freeing time method. The dynamic eigenvalue-time history curve and dynamic buckling modes are presented, and the effect of inclined arch rib on the dynamic stability of leaning-type arch bridge is analyzed and compared under the seismic exercitation in the longitudinal, transverse and vertical directions of the bridge. The results show that all of the dynamic buckling modes are out-plane instabilities when the effect of inclined arch rib is not considered, while dynamic stability coefficient increases by 6%, 56% and166% respectively when the effect of inclined arch rib is considered.

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Periodical:

Advanced Materials Research (Volume 461)

Pages:

579-581

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.461.579

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Online since:

February 2012

Authors:

Yu Zhu Guo, Ai Rong Liu, Qi Cai Yu

Keywords:

Dynamic Eigenvalue, Dynamic Stability, Leaning-Type Arch Bridge, Seismic Time-History

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References

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