Abstract The deep-water high-pier bridges that located in active seismicity areas have the potential to be suffered for earthquakes, wave and current action synchronously during construction and service period. In order to investigate the dynamic responses of the whole bridge piers under joint earthquakes, waves and current action. This paper is based on a deep-water high-pier whole bridge as a prototype, pursuant to the elastic similarity law, the shaking table test under the joint action of an earthquake, wave and current is carried out for a 1:220 geometric scale model. At different water levels, a white noise test and independent earthquake action, joint wave and current action, and joint earthquake, wave and current action were carried out. The test research found that the presence of water decreases the natural frequency of the piers. The effect of water on the higher-order frequencies are greater than those of the low-order frequencies. The dynamic amplification factors of bridge piers in water are greater than those without water, but the effect of the water level is decreases exceed a certain water level. Earthquakes have a great influence on dynamic amplification factors and strains, and the waves and current have a greater influence on hydrodynamic pressures. Earthquakes, waves, and current have an influence on the bridge, but the dominant is earthquakes. The influence of the waves and current on the bridge can not be ignored. The peak strains and peak hydrodynamic pressures under joint earthquake, wave and current action are evaluated to the peak strains and peak hydrodynamic pressures under superimposed independent earthquake, independent wave and current action. It can be seen that the joint effect is not a simple superposition effect. There are complex interactions between the earthquake, wave and current. Considering the effects of coupling, the whole bridge is more complex than a single pier, and the dynamic responses are complicated. Therefore, it is essential to investigate the joint action of earthquakes, wave and current in bridge design under complex circumstances.

中文翻译：

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地震波流联合作用下深水高墩全桥振动台试验

摘要 位于地震活跃区的深水高墩桥梁在施工和使用期间有可能同时遭受地震、波浪和水流作用。为了研究联合地震、波浪和水流作用下整个桥墩的动力响应。本文以某深水高墩全桥为原型，依据弹性相似定律，进行了1:220几何尺度的地震、波浪和水流共同作用下的振动台试验。模型。在不同的水位，进行了白噪声测试和独立地震作用、海浪联合作用和地震海浪联合作用。测试研究发现，水的存在会降低桥墩的自然频率。水对高阶频率的影响大于对低阶频率的影响。桥墩在水中的动力放大系数大于无水时，但超过一定水位时水位下降的影响。地震对动力放大系数和应变影响较大，波浪和洋流对动水压力影响较大。地震、海浪和海流都会对桥梁产生影响，但主要是地震。波浪和水流对桥梁的影响不容忽视。地震、波浪和水流联合作用下的峰值应变和峰值水动压力评估为叠加独立地震、独立波浪和水流作用下的峰值应变和峰值水动压力。可见，联合效应并不是简单的叠加效应。地震、波浪和洋流之间存在复杂的相互作用。考虑耦合效应，整座桥比单墩复杂，动力响应复杂。因此，研究复杂情况下桥梁设计中的地震、波浪和电流的共同作用是必不可少的。