Scientific Problems on Seismic Resistance of Bridge of Pile Foundation in Liquefiable Site

Abstract:

Aiming at the scientific goals of seismic resistance of bridge of pile foundation in liquefiable site, several scientific key problems were presented. Then, the following were analyzed in detail: Mechanism of large-scale table test on dynamic pile-soil-bridge interaction in liquefiable site; the Pyke’s modified dynamic constitutive model of soil; Kagawa’s p-y relation for analysis of piles lateral resistance behavior, and evaluation of degradation and velocity effect on piles vertical resistance. The results show that quasi-static and dynamic analysis need to be advanced for prediction of dynamic pile-soil-bridge interaction; the continuum media model based on Biot's dynamic coupled theory for two-phase porous media should be further developed; Kagawa’s p-y relation is the better choice for analysis of lateral resistance behavior of piles and should be improved, and liquefaction should be considered when analyzing the influences of degradation effect and velocity effect on the vertical resistance behavior of piles.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 1707-1712
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.1707
• Online since: November 2012
• Authors: Li Hui Tian, Guo Feng Bai, Bin Feng, Li Yuan Wang, De Zhi Yang
• Keywords: Bridge of Pile Foundation, Continuum Media Model, Degradation Effect, Liquefiable Site, P-Y Relation

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