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动水压力对深水桥梁地震响应的影响

DOI: 10.3969/j.issn.1674-0696.2014.05.05, PP. 23-28

Keywords: 桥梁工程,动水压力,辐射波浪理论,深水桥墩,bridgeengineering,hydrodynamicpressure,radiationwavetheory,deepwaterpier

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Abstract:

:?以一深水桥梁为研究对象,采用Morison方程和辐射波浪理论两种方法考虑动水压力对深水桥墩进行线性、非线性地震响应分析,比较了两种不同方法计算的动水压力对桥墩地震响应影响的差异。得出了两种不同方法计算的动水压力都增大了桥墩结构的动力响应,并且采用辐射波浪理论计算的动水压力影响值大于采用Morison方程计算的影响值;当深水桥梁在强震作用下进入非线性后,应该采用非线性分析方法分析桥梁的地震响应;在水深较大时,采用规范规定的动水压力是偏不安全的。

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