Abstract：Research purposes:Cross-section form has a great impact on the mechanical properties of the pier of railway bridges, and hollow concrete high-piers show obvious superiority. However, the research of the seismic behavior for reinforced concrete (RC) circular hollow high-pier needs to be further carried out. The curvatures of the control section of the circular hollow high-pier corresponding to the material damage are chosen as a damage status. This paper presents seismic response of RC circular hollow high-pier under 15 earthquake ground motion records using incremental dynamic analysis, proposes the probability of expected damage modes forms the vulnerability curves, studies the seismic performance of circular concrete high-piers.
Research conclusions:The following conclusions can be got from the above analysis: (1) The damage area of RC circular hollow high-pier appears not only at the bottom of the pier but also in the middle of the pier and on the top of the pier under the earthquake, but the vulnerability at the bottom of the pier is higher than that of other areas; (2)The probability of the complete injury is small, and it indicates that the seismic performance of the RC circular hollow high-pier is good; (3) The seismic vulnerability analysis of circular hollow high pier provide theoretical basis for seismic performance research of the practical engineering.
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2014, Vol. 31 
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