Probabilistic Peak Displacement Analysis of Bridge Structures with P-Δ Effect

Abstract:

Peak displacement is one of the most important parameters for the performance based seismic design of bridge structure, while the peak displacement is often significantly impacted by the P-Δ effect. In this study, the influence of the P-Δ effect on the statistics of peak displacement of bridge structure was quantificationally investigated based on a series of nonlinear time-history analysis. The bridge structure was idealized as the single degree of freedom (SDOF) system and the hysteretic behaviour was represented by the improved Bouc-Wen model. The statistic analysis was implemented based on the inelastic dynamic responses of the SDOF system under 69 selected earthquake records. The results show that the P-Δ effect has significant impact on the mean and dispersion of peak displacement of bridge structures, especially if the normalized yield strength and the natural vibration period are small.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 1674-1677
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.1674
• Online since: September 2013
• Authors: Bo Yu, Di Liu, Lu Feng Yang
• Keywords: Bridge, Earthquake, Peak Displacement, P-ΔEffect

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