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考虑动水压力作用的深水桥墩地震响应分析

DOI: 10.3969/j.issn.1674-0696.2012.03.01, PP. 357-361

Keywords: 动水压力,Morison方程法,深水桥墩,地震响应,hydrodynamicpressure,Morisonequation,deepwaterpier,seismicresponse

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Abstract:

:?采用附加质量的形式考虑动水压力对桥墩的影响,以ANSYS有限元软件为计算平台,建立单墩模型并进行深水桥墩地震响应分析。得出动水压力改变桥墩的地震反应特性,增大了桥墩墩顶位移和墩底内力,并且动水压力作用还与结构本身质量和周期有关等结论。通过对连续梁桥和连续刚构桥的分析,验证了动水压力作用与结构固有周期有关,随着固有周期的增大,动水压力对结构的影响越小

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