Critical Seismic Response Analysis of Skew Bridges

Ming Qi Lu; Shao Qin Guo

doi:10.4028/www.scientific.net/AMM.488-489.394

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 488-489Critical Seismic Response Analysis of Skew Bridges

Critical Seismic Response Analysis of Skew Bridges

Abstract:

The complexity of seismic response for skew bridge rises higher seismic-vulnerability relatively in comparison with right bridge. One of the parameters that directly affects the seismic response on a skew bridge is the excitation angle of the ground motion [. This paper investigates the effects of seismic force direction on the responses of skew bridges without considering impact effect in time history nonlinear dynamic analyses. The combination rules for orthogonal earthquake effects, such as the 100/ 30, 100/40 percentage rules and the SRSS method are also examined. It is concluded that the angle of excitation that produces the critical responses depends both on the ground motion and bridge characteristics, and the three combination rules are all relatively conservative, a new formula which considers the influence of skew angle and excitation angle of the ground motion is suggested.

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Periodical:

Applied Mechanics and Materials (Volumes 488-489)

Pages:

394-397

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.488-489.394

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Online since:

January 2014

Authors:

Ming Qi Lu*, Shao Qin Guo

Keywords:

Combination Rules, Critical Seismic Response, Non-Linear Analysis, Skew Bridge

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References

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